Altek 434KP Process Loop Calibrator Manual

							Milliamp Calibrator
Model 434-KP
¥ Calibrate with laboratory accuracy
±(0.015% of reading + 0.002 mA)
Accurate to 0.005 mA from 4 to 20 mA
¥ All 4 to 20 mA loop functionsSource and read milliamps
Simulate 2-wire transmitters
Power transmitters & displays transmitter output
Measure voltage from -100.0 to +100.0V DC
¥ Full range 1 microamp resolution0.000 to 24.000 mA and
-25.00 to 125.00% of 4 to 20 mA
¥ Powers loop or transmitterDrives to 1200 ohm loads Ð enough for any
transmitter or loop 
¥ Standard  ÒAAÓ alkaline batteriesOver 30 hours of full 20 mA output. Auto-Off saves
batteries.
¥ User settable ÒQuik-Chek© ÓStore HI, SET & LO for instant recall
¥ ÒAuto-ChekªÓ output
Automatically switches output in 2, 3, 5 or 10 steps
Automatic Ramp and Soak to simulate a process
¥ ÒValve-Chek¨Ó outputChecks valve and actuator closing and opening
¥ HART compatibility option (built-in)
Calibrate loop instruments
Calibrate and troubleshoot all the signals in a standard
4 to 20 milliamp process control loop with AltekÕs
Model 434-KP Milliamp Calibrator. A 24 mA Source,
mA meter, 2-wire transmitter simulator and a DC volt
meter in one compact unit enables a single tool to
perform most calibration and troubleshooting functions.
Source milliamps
Calibrate controllers, recorders or other devices in 4
to 20 or 0 to 20 mA loops.  Six ÒAAÓ batteries provide
hours of continuous use. The batteries last several
time longer than calibrators with a single 9V battery!
Optional AC adapter for continuous use.
Simulate 2-wire transmitters
Check out the response of a loop by using the Model
434-KP in place of a 2-wire transmitter. The Model
434-KP modulates the current passing through the
loop just like a transmitter, but with manual control.
Power & measure 2-wire transmitters
Simultaneously supply power to a 2-wire transmitter
while displaying the 4-20 mA output signal. The Model
434-KP supplies a nominal 24 Volts DC to the 2-wire
transmitter while displaying the transmitterÕs output.
Read voltage outputs
Check 24 Volt loop supplies and batteries using the built-
in voltmeter. Verify instruments with 1-5 Volt outputs.
Read milliamp outputs
Measure current anywhere in a loop. Check and
adjust transmitter and controller outputs. Also
measure current on transmitters with test jacks or
across series diodes. Read milliamps with several
times the accuracy of handheld DVMs. 
Quik-Chek outputs 
Save time with every calibration by using the
advanced features of the Model 434-KP. Instantly
recall any three output settings with the handy Quik-
Chek push-buttons. All output settings are
remembered, even with the power off.
Automatic stepping & ramping
Be in two places at once by using the Model 434-KPÕs
Auto-Chek. Connect behind the panel or replace a
transmitter, then check the output in front of the panel
or another remote location within the loop. Choose 2,
3, 5 or 10 output steps from 5 to 900 seconds to
match your calibration setup. Use the automatic
Ramp/Soak to simulate a running process and check
valves for smooth operation.
Easily check valves & actuators
Check valve and actuator operation with the built-in
Valve-Chek function. Automatically step up & down to
check valves at and around the fully closed position
and the fully open position. Or manually step through
the points and use the Up/Down push-buttons for fine
adjustment.
General description 
						

							Fast milliamp calibrationCalibrate the input of a recorder, computer, valve positioner or any
other milliamp input device using the Model 434-KP to source
milliamps or to simulate a 2-wire transmitter.  The source mode
uses the batteries of the Model 434-KP to power the loop, or in 2-
wire Simulate mode, uses the power supply in the loop.
Store the milliamp values corresponding to the Span and Zero of
the device being calibrated into the HI and LO Quik-Chek
memories (typically 4.000 and 20.000 mA). Press the HI or Lo
Quik-Chek push-buttons to recall the desired output. Use the Up
and Down bush-buttons and monitor the device being calibrated.
Adjust the Span and Zero of the device being calibrated as
required.
Calibrating a 2-wire transmitter Simplify the calibration of 2-wire transmitters by using the Power
Measure mode of the Model 434-KP. In this mode, the Model 434-
KP uses its internal batteries (or optional AC adapter) to provide
the voltage to power up the 2-wire transmitter.
Connect a sensor or calibrator to the input of the transmitter and
the Model 434-KP to the output of the transmitter. The display of
the Model 434-KP will indicate the output of the transmitter in
milliamps or percent, corresponding to the input signal provided by
the sensor or calibrator connected to the input of the transmitter.
Save time obtaining ÒAs FoundÓ and ÒAs LeftÓ To quickly obtain ÒAs FoundÓ and ÒAs LeftÓ calibration data, use the
Model 434-KPÕs Auto-Chek to automatically output steps matching
the input of the instrument being checked. Choose steps of 10, 25,
50 or 100% percent of range, corresponding to ten, five, three or
two equally spaced steps to cover the range between the values
stored in the HI and LO Quik-Chek memories. Select a moderate
time period (10 to 30 seconds) to pause at each step to allow for
settling time of the device being checked. Start the Auto-Chek from
either end of the span by setting the Quik-Chek switch in the HI
position, to go from the highest value down or in the LO position, to
start from the lowest value up. Press the START/STOP push-button
to start the AUTO-CHEK and press it again to stop it when you
have recorded all the ÒAs FoundÓ data. Run it in both directions if
you require data to check for hysteresis. Press the START/STOP
push-button to stop the Auto-Chek and use the Quik-Chek switch to
toggle between the HI and LO outputs to adjust the Zero and Span
of the instrument being calibrated. Press the START/STOP push-
button again to start the Auto-Chek and record the ÒAs LeftÓ data. 
Locating trip pointsThe Model 434-KP can assist you in locating the setpoints on
controllers or alarm points on current trips. The Auto-Ramp function
smoothly increases and decreases the output of the 434-KP to
simulate a running process.
Set the Auto-Ramp to cover the desired span for a moderate time
period (60 seconds, for example). Start the ramp from either end of
the span by setting the Quik-Chek in the HI position, to go from the
highest value down or in the LO position, to start from the lowest
value up. Press the START/STOP push-button to start the ramping
and press it again to stop it when the trip point is indicated on the
controller or current trip. The Model 434-KP will display the actual
value reached when the button was pushed. You can now press
the Up and Down push-buttons to go back and forth to precisely
determine the trip and reset points.
Loop and process monitoring (Min/Max)Automatically verify the control band of a controller or the variability
of a process by using the Model 434-KP to monitor a milliamp
signal. Set the Model 434-KP to read mA or %  in series with the
loop to be monitored. Let the loop run under normal operating
conditions and press the MIN or MAX push-buttons to instantly
recall the lowest and highest values milliamp signals.
Note: be sure to disable the Auto-Off battery saver if you need to
leave the Model 434-KP on for more than 30 minutes. Note: press
the MAX or MIN push-button to restart the Auto-OffÕs timer for
another 30 minutes.
Applications
Simulating a running processSimulate the ramp and soak or stabilizing time of an active loop
with the easily settable Auto-Ramp of the Model 434-KP. This
operates in source mode using the batteries of the Model 434-KP
to power the loop, or in 2-wire Simulate mode if the loop has its
own power supply. Select any span by storing the endpoints of the
range to be simulated into the HI and LO Quik-Chek positions.
Independently select the number of seconds for the duration of the
ramp and the duration of the soak to approximate the running
process. Press the START/STOP push-button to toggle the
simulation on and off.
Checking for fully open & fully closed valves To check a valve & actuator for proper adjustment, you need to
verify that it is fully open or closed with the proper input signal.
Many control systems use a 4 to 20 mA signal to control the
actuator. Checking fully open or closed requires supplying a
milliamp signal that is slightly lower than the exact value, the exact
value at fully open or closed, and a value slightly higher than the
exact value. Check that there is no stem movement in the valve
when the signal changes from out-of-range to the exact value and
that the stem starts to move when the signal is slightly within
range.
The Valve-Chek function of the Model 434-KP has three ranges
designed to check the fully open & fully closed positions. The
Valve-Chek HI cycles up and down through 19.800, 20.000 and
20.200 mA; the Valve-Chek LO cycles through 3.800, 4.000 and
4.200 mA; and the Valve-Chek SET cycles through 3.800, 4.000,
4.200, 12.000, 19.800, 20.000 and 20.200 mA.
Checking valves for smooth operationTo check that a valve and actuator are operating smoothly, the
valve and actuator must be slowly stroked (opened and closed)
and monitored for rough spots or vibration. The vibration can be felt
by hand, listened to by ear or through a stethoscope.
Set the Auto-Ramp function of the Model 434-KP to ramp for a
number of seconds (from 5 to 900 seconds) approximating the
operating opening and closing rate of the actuator. Some actuators
and positioners have a slow response time that limits how quickly
the valve can move. This prevents the valve from causing problems
that arise up or down stream when the fluid flow rate changes too
quickly. A few seconds of soak time is needed to give the valve and
positioner time to come to a stop at each end of the ramp.
Press the START/STOP push-button to toggle the Auto-Ramp on
and off. With the Auto-Ramp off, you can use the digital pot to
manually stroke the valve to verify any rough spots.
Using the 434-KP as a manual loading stationWhen you need to keep a stable process running and a controller
or transmitter is going haywire, simply replace the malfunctioning
instrument with the Altek Model 434-KP. The 434-KP can be used
to substitute for a transmitter signal and regulate the current in the
loop or in place of a controller to supply the signal to drive the
valve or other final control element.
Connect the Model 434-KP in place of the instrument being
serviced while monitoring and adjusting the signal manually. When
the faulty instrument is repaired, remove the 434-KP and bring the
loop back on automatic control. Note: be sure to disable the Auto-
Off battery saver if you need to leave the Model 434-KP on for
more than 30 minutes. 
						

							General instructions
Turn-onEach time you turn on the Model 434-KP the LCD
will display all segments for about 1 second. It then
displays the most recently selected scaling for the
function selected by the selector knob.
SOURCE - The three QUIK-CHEK outputs will be
the same as previously stored. The same three
QUIK-CHEKs are used for the SOURCE & 2 WIRE
SIM functions.
READ - The 434-KP is ready to measure milliamps
or DC Volts and is automatically updating the MAX
& MIN readings for recall at any time.
Choosing milliamp or percentYou may choose to display from 0.000 to 24.000
mA or -25.00 to 125.00%. Press the MILLIAMP /
PERCENT push-button to toggle the display. When
scaled in percent, 100.00% corresponds to 20.000
mA and 0.00% corresponds to 4.000 mA.
Turn-offPress the POWER push-button to turn the 434-KP
off. If AUTO-OFF is enabled the 434-KP will turn
itself off after 30 minutes of inactivity.
AutocalTo maintain accuracy, the Model 434-KP periodically
recalibrates its measuring circuitry against internal
references. While this is occurring the word CAL will
appear on the display for less than 2 seconds. 
Changing batteries Low battery is indicated by BAT on the display.
Approximately four hours of operation remain before
the LCD blanks and Model 434-KP shuts itself
down.  Turn the 434-KP off, loosen the captive
screw securing the battery compartment and lift off
the  cover from the bottom of the case. The six ÒAAÓ
batteries are easily removed and replaced (alkaline
supplied and recommended). Replace the battery
compartment cover by inserting the tabs and
tightening the screw.
Source milliamps and simulate 2-wire transmitters
Select source by pressing the SOURCE
MILLIAMPS or 2 WIRE SIM push-button and the
letters mA and SOURCE or mA, 2-WIRE SIM and
SOURCE will appear on the LCD display. If percent
4-20 was selected the last time the 434-KP was
used the indicator % will also appear and the
display will be scaled in percent. To ramp the output
press and hold any Up or Down pushbutton. The
display will continue to change in increments
corresponding to the digit being changed and will
automatically carry up and down until the limits of
the range are reached. This function operates in all
three output positions (HI, SET & LO). 
Storing Quik-Chek outputs1) Switch to HI or LO 
2) Press the Up/Down keys to the desired value
3) Press the STORE push-button
The LCD will flash once to show that the value
was saved
If a value is in the SET position and you want that
value stored in HI or LO, press and hold the STORE
push-button then oress the HI or LO push-button.
The display will flash once to indicate the value has
been stored. Then release both push-buttons.
Recalling Quik-Chek outputsWhen you need a stored value just tap the HI or LO
push-button. Any value for the selected range may
be stored in HI & LO. The Model 434-KP
remembers the HI, LO and SET values with the
power on or off. 
Note: The same value is stored for both mA and %.
The recalled value will be displayed in the units you
have selected.
Open loopsThe digits on the LCD will flash if there is an open
loop. The word POLARITY will appear on the LCD if
the polarity is reversed in 2-wire SIM and Read
Transmitter Test Jack modes. Check all the
connections in the loop or try reversing the leads.
Read milliamps
Select read by pressing the READ mA/VDC push-
button and the letters mA and READ or V and
READ will appear on the LCD display. If percent 4-
20 was selected the last time the 434-KP was used
the indicator % will also appear and the display will
be scaled in percent. There are two modes for mA
READ. The first mode is used to read the current
flowing through a loop or when measuring the
output of a controller. The second mode has a fuse
for protection and is used to measure the current on
transmitter test jacks or across a diode in series
with the loop.
MIN/MAXTo read the Maximum or Minimum INPUT since
READ mode was entered, simply press the MAX or
MIN push-button. The value will appear on the LCD
along with the word MAX or MIN. The MAX/MIN
values are automatically updated and may be
viewed at any time without disturbing the other
values.  
Restarting MIN/MAXPressing the STORE/RESET push-button will cause
the Model 434-KP to store the present reading into
the MAX and MIN memories. Upon releasing the
STORE/RESET push-button the 434-KP will resume
reading the input and update the MAX & MIN values
as the measured signal changes.
Out of range signalsSignals above or below those available for the
currently selected range will be indicated by Or and
Ur on the display. The word POLARITY will appear
on the LCD if the polarity is reversed in Read
Transmitter Test Jack mode.
CAL
MILLIAMP
PERCENT
POWER
POWER
MAX
READ
MIN
RESET 
						

							mA, mA % (Percent of 4 to 20 mA)Choose this function to provide an output from 0.000 to 24.000 mA. The
compliance voltage is a nominal 24 VDC to provide the driving power to
your milliamp receivers or to drive a whole loop.
1) Disconnect one or both input wires from the device to be calibrated.
2) Press the POWER push-button to turn the Model 434-KP on and turn
the selector knob to SOURCE MILLIAMPS.
3) Connect the red SOURCE lead of the calibrator to the plus (+) input
of the device and the black SOURCE lead to the minus (-).
4) Press the MILLIAMP/PERCENT push-button to toggle the display
between indicating 0.000 to 24.000 mA and -25.00 to 125.00% of 4
to 20 mA. The words SOURCE and mA or SOURCE, mA and % are
displayed.
Output current is continuously adjustable with the Up and Down push-
buttons. Zero & Span (or any other values) are available by using the
LO and HI QUIK-CHEKs to recall your stored settings (4.000 & 20.000
mA defaults).
Source milliamps
Simulate 2-wire transmitters
Power & measure 2-wire transmitters
2-WIRE SIM mA, 2-WIRE SIM % (Percent 4 to 20mA) Choose this function to simulate a 2-wire transmitter output from 1.00 to
24.00 mA. Operates in loops with power supply voltages from 3 to 45
VDC.
1) Disconnect existing 2-wire transmitter from the loop
2) Press the POWER push-button to turn the Model 434-KP on and turn
the selector knob to 2 WIRE SIM.
2) Connect the red SOURCE lead of the calibrator to the plus (+) input
of the field connections and the black SOURCE lead to the minus (-)
3) Press the MILLIAMP/PERCENT push-button to toggle the display
between indicating 0.000 to 24.000 mA and -25.00 to 125.00% of 4
to 20 mA.  The words SOURCE, 2-WIRE SIM and mA or SOURCE,
2-WIRE SIM, mA and % are displayed.
Output current is continuously adjustable with the Up and Down push-
buttons. Zero & Span (or any other values) are available by using the
LO and HI QUIK-CHEKs to recall your stored settings (4.000 & 20.000
mA defaults).
PWR XMTR mA, PWR XMTR %Choose this function to simultaneously supply power to a 2-wire
transmitter while displaying the 4-20 mA output of the transmitter. 
1) Disconnect one or both input wires from the 2-wire transmitter to be
calibrated.
2) Press the POWER push-button to turn the Model 434-KP on and turn
the selector knob to POWER MEASURE.
3) Connect the red SOURCE lead of the calibrator to the plus (+) input
of the device and the black SOURCE lead to the minus (-).
4) Connect an appropriate sensor or calibrator to the input of the 2-wire
Transmitter.
3) Press the MILLIAMP/PERCENT push-button to toggle the display
between indicating 0.000 to 24.000 mA and -25.00 to 125.00% of 4
to 20 mA. The words SOURCE, PWR XMTR and mA or SOURCE,
PWR XMTR, mA and % are displayed.
The Model 434-KP supplies a nominal 24 Volts DC at 24 mA to power
the 2-wire transmitter. The current passed by the transmitter will be
accurately displayed by the 434-KP. Calibrate the transmitter in the
usual manner and disconnect the 434-KP.
HART COMMUNICATOR COMPATIBILITY
An internal jumper enables the Power & Measure 2-wire transmitter
mode to be compatible with HART communicators and transmitters. This
eliminates the need to add an external load resistor when
communicating with a HART transmitter (refer to diagram on page 7).
Milliamp Receiver Input
Controller
Transmitter
Computer
Logger
I/P
DCS
SOURCE READVDC
QUIK-CHEKSOURCE
mA
POWER
MEASURE READ2 WIRE
SIMMILLIAMPS
READ
HI
SET
LOMIN READMAX
START
STOP
POWER
RESET STORE
AUTO CHEK
RAMP / VALVESETUP MILLIAMP
PERCENT
MILLIAMP CALIBRATOR
+IN-
REF +OUT-To
Sensor
Typical
2-Wire
Transmitter
(Disconnected)
Power Supply
2 to 45 VDC
Receiver
(Powers external
2-Wire Transmitter)
START
STOP
POWER
RESET STORE
AUTO CHEK
RAMP / VALVESETUP MILLIAMP
PERCENT
MILLIAMP CALIBRATOR
SOURCE READVDC
QUIK-CHEKSOURCE
mA
POWER
MEASURE READ2 WIRE
SIMMILLIAMPS
READ
HI
SET
LOMIN READMAX
+IN-
REF +OUT-
Typical
2-Wire
Transmitter
SOURCE READVDC
QUIK-CHEKSOURCE
mA
POWER
MEASURE READ2 WIRE
SIMMILLIAMPS
READ
HI
SET
LOMIN READMAX
START
STOP
POWER
RESET STORE
AUTO CHEK
RAMP / VALVESETUP MILLIAMP
PERCENT
Transmitter Input
Sensor
Process Signal
Simulated Input
MILLIAMP CALIBRATOR 
						

							mA, mA % (Percent of 4 to 20 mA)Choose this function to measure loop current or controller outputs from
0.000 to 24.000 mA or -25.00 to 125.00%. 
1) Open the current loop at any convenient point along the signal path
2) Press the POWER push-button to turn the Model 434-KP on and turn
the selector knob to READ MILLIAMPS.
3) If the diode symbol      appears on the display press the SETUP
push-button and only READ and mA or READ, mA and % are
displayed. 
4) Press the MILLIAMP/PERCENT push-button to toggle the display
between indicating 0.000 to 24.000 mA and -25.00 to 125.00% of 4
to 20 mA. The words READ and mA or READ, mA and % are
displayed.
5) Connect the red (+) lead of the calibrator to the more positive point of
the break and the black (-) lead to the more negative.
Display the present reading, Maximum or Minimum by pressing the
READ, MAX or MIN push-button. If the Model 434-KP is connected in
the wrong polarity, the word POLARITY will appear in the display. Simply
reverse the leads for correct indication.
Read milliamps
Read transmitter test jacks or across loop diodes
Power & measure 2-wire transmitters
mA, mA % (Percent of 4 to 20 mA)Choose this function to measure loop current on transmitter test jacks or
across diodes in series with the milliamp loop. Display from 0.000 to
24.000 milliamps or -25.00 to 125.00%. The read transmitter test jack
function has a fuse for protection.
1) Press the POWER push-button to turn the Model 434-KP on and turn
the selector knob to READ MILLIAMPS.
2) If the diode symbol  doesnÕt appear press the SETUP push-button
until The words READ, mA and the diode symbol      or READ, mA,
% and the diode symbol       are displayed.
3) Press the MILLIAMP/PERCENT push-button to toggle the display
between indicating 0.000 to 24.000 mA and -25.00 to 125.00% of 4
to 20 mA. The words READ, mA and the diode symbol       or READ,
mA, % and the diode symbol       are displayed.
4) Connect the red (+) lead of the calibrator to the more positive point of
the break and the black (-) lead to the more negative.
Display the present reading, Maximum or Minimum by pressing the
READ, MAX or MIN push-button. If the Model 434-KP is connected in
the wrong polarity, the word POLARITY will appear in the display. Simply
reverse the leads for correct indication.
V DCChoose this function to measure from -99.99 to +99.99 Volts DC to
check batteries, loop power supplies or any process voltage output.
1) Press the POWER push-button to turn the Model 434-KP on and turn
the selector knob to VDC READ.
2) Connect the red (+) lead of the calibrator to the positive point and the
black (-) lead to the negative.
Display the present reading, Maximum or Minimum by pressing the
READ, MAX or MIN push-button. If the Model 434-KP is connected in
the wrong polarity, the word POLARITY will appear in the display. Simply
reverse the leads for correct indication.
Milliamp Output Signal
Controller
Transmitter
P/I
DCS
SOURCE READVDC
QUIK-CHEKSOURCE
mA
POWER
MEASURE READ2 WIRE
SIMMILLIAMPS
READ
HI
SET
LOMIN READMAX
START
STOP
POWER
RESET STORE
AUTO CHEK
RAMP / VALVESETUP MILLIAMP
PERCENT
MILLIAMP CALIBRATOR
TEST
POINTS +
-
MILLIAMP CALIBRATOR
SOURCE READVDC
QUIK-CHEKSOURCE
mA
POWER
MEASURE READ2 WIRE
SIMMILLIAMPS
READ
HI
SET
LOMIN READMAX
START
STOP
POWER
RESET STORE
AUTO CHEK
RAMP / VALVESETUP MILLIAMP
PERCENT
Voltage Output Signal
Controller
Transmitter
Power Supply
SOURCE READVDC
QUIK-CHEKSOURCE
mA
POWER
MEASURE READ2 WIRE
SIMMILLIAMPS
READ
HI
SET
LOMIN READMAX
START
STOP
POWER
RESET STORE
AUTO CHEK
RAMP / VALVESETUP MILLIAMP
PERCENT
MILLIAMP CALIBRATOR 
						

							Automatic functions
There are three automatic functions - Auto-Chek, Ramp & Valve-
Chek. These automatic functions operate in the SOURCE
MILLIAMPS and 2 WIRE SIM modes. Each automatic function is
quickly selected and indicated on the LCD. All automatic operation
are configurable and the configurations are remembered even
when the power is off. Whenever an automatic function is
selected, the previous configuration is recalled and
the function will be indicated on the LCD. When no automatic
functions are indicated on the LCD, all automatic functions are off.
Auto-Chek The Model 434-KP can be set up to automatically or manually
step the output with your choice of 2, 3, 5 or 10 steps from Zero to
Full Scale. Select automatic steps from 5 to 900 seconds or select
0 seconds to manually select each of the 2, 3, 5 or 10 steps.
RampChoose the ramp setting to repeatedly ramp between adjustable
Zero and Full Scale. You select the ramp time from 5 to 900 and
soak tome from 0 to 900 seconds. The Model 434-KP will
smoothly ramp the output and automatically hold steady at each
end if you would like time to adjust the device being calibrated.
The ramp can also be set up for a narrower span to simulate the
ramping & soaking of a running process loop.
Valve-ChekCheck your valves and actuators for proper operation with
automatic or manual steps. Fixed settings of 3.800, 4.000 and
4.200 mA check the low end of the actuator and fixed settings of
19.800, 20.000 and 20.200 mA check the high end. The 434-KP
can also be setup to automatically or manually step through both
high and low fixed settings with the addition of a midpoint at
12.000 mA.
Auto-Chek
Automatic stepping (5 to 900 second per step)1) Press the START/STOP push-button to automatically step the
output up and down. The word STEP will flash on the LCD
and the output will automatically step after the number of
seconds selected in the setup have elapsed.
2) Press the START/STOP push-button to stop the automatic
stepping. Press it again will restart.
Note: The Automatic stepping may be restarted at the HI or LO
stored values based on the Quik-Chek indicated on the display.
The Auto-Chek will begin at the value stored in LO if the Lo Quik-
Chek is indicated on the display or will begin at the value stored in
HI if the Hi Quik-Chek is indicated on the display. The Auto-Chek
will begin at the last automatic step if neither Hi or Lo appears on
the display.
Manual Stepping (0 seconds per step)Press the START/STOP push-button to manually step the output up
and down. The output will step through the number of steps setup
between the values stored in the HI & LO Quik-Chek positions each
time you press the pushbutton. You may press and Up or Down
push-button at any time to precisely adjust the output, find a trip point
or alarm, or stroke a valve.
Setup1) Select SOURCE MILLIAMPS or 2 WIRE SIM
2) Press the AUTO CHEK RAMP/VALVE push-button until AUTO-
CHEK appears on the LCD.
3) Press the SETUP push-button and the words AUTO-CHEK,
STEP and % appear on the LCD prompting you to enter the
percent of span change between steps. Press the Up and
Down push-buttons until the correct percentage appears on the
LCD. For 2 steps choose 100%, 3 steps choose 50%, 5 steps
choose 25% and for 10 steps choose 10%. Press the SETUP
push-button to continue.
4) The words AUTO-CHEK, STEP and SEC appear on the display
prompting you to enter the number of seconds between steps.
Press the Up and Down push-buttons until the correct number
of seconds per step (from 5 to 900) appears on the LCD. If you
would like manual operation instead of automatic operation
select 0 seconds per step. Press the SETUP push-button to
complete the Auto-Chek setup.
5) Store the desired Full Scale & Zero into the HI & LO Quik-Chek
positions.
Valve-Chek
Setup1) Select SOURCE MILLIAMPS or 2 WIRE SIM
2) Press the AUTO CHEK RAMP/VALVE push-button until
VALVE-CHEK appears on the LCD.
3) Press the SETUP push-button and the words VALVE-CHEK,
STEP and SEC appear on the display prompting you to enter
the number of seconds between steps. Press the Up and
Down push-buttons until the correct number of seconds per
step (from 5 to 900) appears on the LCD. If you would like
manual operation instead of automatic operation select 0
seconds per step.  Press the SETUP push-button to complete
the Auto-Chek  setup.
Automatic stepping (5 to 900 second per step)1) Press the START/STOP push-button to automatically step the
output up and down. The word STEP will flash on the LCD and
the output will automatically step after the number of seconds
selected in the setup have elapsed.
2) Press the START/STOP push-button to stop the automatic
stepping. Press it again to restart.
Manual operation (0 seconds per step)Press the START/STOP push-button to manually step the output
up and down. The output will step between the values in the
Valve-Chek range selected by the position of the Quik-Chek
switch each time you press the START/STOP push-button. You
may press and Up or Down push-button at any time to precisely
adjust the output, find a trip point or alarm, or stroke a valve.
Note: Whenever Valve-Chek is activated the Quik-Chek HI & LO
memories are reset to 20.000 and 4.000 mA.
Valve-Chek rangesValve-Chek HI
Cycles up and down through 19.800, 20.000, 20.200 mA
Valve-Chek LO
Cycles up and down through 3.800, 4.000, 4.200 mA
Valve-Chek LO/HI
Cycles up and down among 3.800, 4.000, 4.200, 12.000,
19.800, 20.000, 20.200 mA
The selection of the Valve-Chek range is based on the displayed
value of the Quik-Chek. Press the Hi Quik-Chek push-button to
select the Valve-Chek HI range. Press the Lo Quik-Chek push-
button to select the Valve-Chek Lo range and press the Set Quik-
Chek push-button to select the Valve-Chek LO/HI range. 
						

							Ramp
Returning to manual operation
Setup1) Select SOURCE MILLIAMPS or 2 WIRE SIM
2) Press the AUTO CHEK RAMP/VALVE push-button until RAMP
appears on the LCD.
3) Press the SETUP push-button and the words AUTO-CHEK,
RAMP and SEC appear on the display prompting you to enter
the number of seconds between steps. Press the Up and
Down push-buttons until the correct number of seconds per
ramp (from 5 to 900) appears on the LCD. Press the SETUP
push-button to continue.
4) The words AUTO-CHEK, RAMP, SOAK and SEC appear on the
display prompting you to enter the number of seconds to hold
the output steady at the top and bottom of each ramp cycle.
Press the Up and Down push-buttons until the correct number
of seconds per hold (from 5 to 900) appears on the LCD Press
the SETUP push-button to complete the Auto-Chek setup.
5) Store the required Span & Zero into the HI & LO Quik-Chek
positions.Automatic Operation1) Press the START/STOP push-button to automatically ramp the
output up and down. The word RAMP will flash on the LCD
and the output will automatically ramp after the number of
seconds selected in the setup have elapsed. The output will
hold steady at the top and bottom of each ramp cycle for the
number of seconds selected for the SOAK time. If the the soak
time is set for 0 seconds the output will continuously ramp
without holding at the top and bottom.
2) Press the START/STOP push-button to stop the automatic
ramping. Press it again to restart.
Note: The ramp may be restarted at the HI or LO stored values
based on the Quik-Chek indicated on the display. The ramp will
begin at the value stored in LO if the Lo Quik-Chek is indicated
on the display or will begin at the value stored in HI if the Hi
Quik-Chek is indicated on the display. The ramp will begin at
the last point if neither Hi or Lo appears on the display.
Press the AUTO CHEK/AUTO VALVE push-button until no
automatic modes are selected. This is indicated when none of the
automatic modes (AUTO-CHEK, AUTO-VALVE or RAMP) are
shown on the LCD
General operations
HART CompatibilityAn internal jumper enables the Power & Measure 2 Wire
Transmitter mode to be compatible with HART communicators and
transmitters. By removing this jumper a 250 ohm resistor is placed
in series with the output of the Model 434-KP. This internal resistor
eliminates the need to add an external load resistor when
communicating with a HART transmitter (refer to diagram below).
This reduces the typical drive capability to 950 ohms.
Fuse ReplacementIf the Model 434-KP no longer meaures current between transmitter
test jacks or across a diode the internal fuse may have blown.
Replace it with a fuse 5 x 20 mm and rated to 250 mA at 250V.
Refer to the diagram below for location.
Disconnect unit from circuit before changing fuse or
HART jumper.           
Accessing the Jumper & Fuse1) Turn the 434-KP off
2) Loosen the screw on the battery cover. Remove the cover and
batteries.
3) Remove the four remaining screws and carefully separate the
enclosure.
4) Refer to the diagram for jumper location or fuse replacement.
5) Reverse the procedure for reassembly.
Fuse, 5x20mm
250 mA, 250V
250 OHM
(HART)
CALENABLE
Do Not
Change
PositionHART
Disabled*
HART
Enabled
*Factory
 Default
Auto-OffModel 434-KP can be set up to turn itself off after 30 minutes of
inactivity. The internal timer is reset to 30 minutes each time a
pushbutton is pressed. This configuration is part of the DEFAULT
SETTINGS below.
Default settings - user options The Model 434-KP may be restored to the factory settings. This will
reset the HI and LO ÒQUIK-CHEKÓ memories to 20.000 mA and
4.000 mA and the SET memory to midrange (12.000 mA). Prompts
guide you for selection of  AUTO-OFF.
1) Press and hold the STORE/RESET push-button while turning
the 434-KP on.
2) Keep pressing the STORE/RESET push-button until the display
flashes (about 5 seconds) then release.
3) The words BAT and ON will appear on the display indicating
that AUTO-OFF is selected.
4) To toggle the AUTO-OFF function on and off press the SETUP
push-button and the words oN and oFF will display.
5) After five seconds the 434-KP will automatically store your
choice and the 434-KP will begin normal operation. Or you may
press the STORE/RESET push-button to accept your choice
and begin operation.
Tilt Stand and Carrying CaseThe Model 434-KP comes with a carrying case and a built-in tilt
stand/hanger. The 434-KP is held securely in the case by
VELCRO
¨.
The tilt stand is easily raised by pulling the stand until it locks into
place. The stand can
also be reversed for use
as a hanger to suspend
the Model 434-KP.
VELCRO¨
is a registered trademark of Velcro USA 
						

							Measure DC Volts
Altek Industries, Inc.   
PO Box 1106, Everett, WA 98206
1520 75th Street SW, Everett, WA 98203
For more information:
U.S.A. (800 322-5835
Fax (800) 265-6340
Service fax (425) 446-6331
E-mail: [email protected]
Web: www.altekcalibrators.com
PN 1887816 Rev B December 2002
©2002 Altek Industries, Inc. Specifications subject to change without notice. 
All rights reserved. Printed in U.S.A.  
Altek products are warranted to be free from defects
in material and workmanship (excluding fuses,
batteries and leads) for a period of three years from
the date of shipment. Warranty repairs can be
obtained by returning the equipment prepaid to our
factory. Products will be replaced, repaired, or
adjusted at our option. 
Altek gives no other
warranties, including any implied warranty of fitness
for a particular purpose.
Also, Altek shall not be liable
for any special, indirect, incidental or consequential
damages or losses arising from the sale or use of its
products.
Warranty
Specifications
Ranges and accuracy
(Unless otherwise indicated, specifications are for one year in ±% of
span at 23¼C)
GeneralMilliamp accuracy: ±(0.015% of reading + 0.002 mA)
Temperature effect: ±0.008%/¡C based on 23¡C ±25¡C
Batteries: Six AA batteries (Alkaline supplied and recommended)
Battery life: 
Milliamp Source & 2-wire Modes: Nominal 44 hours 
at 12 mA, 30 hours at 20 mA into 250 Ohm load
Other Functions: Nominal 75 hours
AC Adapters: Optional, 120 or 240 VAC, 50/60 Hz
Low battery indication: BAT indication on the display at 6.5 V
nominal, approximately 4 hours left
Operating temperature range: -5 to +130¡F (-20 to +55¡C)
Storage temperature range: -13 to +130¡F (-25 to +55¡C)
Relative humidity: 10 to 90%, non-condensing for 24 hours
Warm up time: 10 seconds to rated accuracy, 2 minutes to full
accuracy
Overall size:  6.23 x 3.27 x 1.94 inches (158.1 x 83.1x 49.3 mm)
Weight: 1lb, 2oz (0.5 kg)
Milliamp sourceRanges:
0.000 to 24.000mA with 1 microamp resolution
-25.00 to 125.00% of 4-20mA with 0.01% resolution
Typical drive capability: 1200 Ohms @ 20.000 mA
Power to drive receiver: Nominal 24 VDC
Compliance voltage:
0 to 500 Ohm Load: 12 V nominal @ 20.000 mA
500 to 1200 Ohm load: 24 V nominal @ 20.000 mA
Power & measure 2-wire transmittersRanges: Same as Milliamp Source
Output current: up to 24.000 mA
Typical drive capability: 1200 Ohms @ 20.000 mA
Power to external 2-wire transmitter: Nominal 24 VDC
Read milliampsRanges: Same as Milliamp Source
Voltage burden: 0.9 V at 4 mA, 1.2 V at 20 mA,1.4 V at 24 mA
Read transmitter test jacks or
across loop diodes
Ranges: Same as Milliamp Source
Overvoltage protection: Fuse, 5 x 20 mm, 250 mA, 250 V
Input impedance: 15 ohms
Simulate 2-wire transmittersRanges: 1.000 to 24.000 mA
Loop voltage limits: Minimum, 2 VDC; Maximum 50 VDC
Measure DC VoltsRange: -100.0 to +100.0 DC Volts
Accuracy: ±0.5% of Full Scale Reading from 0.0 to 100.0V
Input resistance: > 1 Meg ohm 
Source resistance effect:  0.01% per 100 Ohms
Milliamp
Functions
24.000 mA
20.000
12.000
4.000
1.000
0.000Low
Limit
23.994 mA
19.995
11.996
3.997
0.998
-0.002Hi
Limit
24.006 mA
20.005
12.004
4.003
1.002
0.002Read
DC Volts
100.0 V
50.0
25.0
5.0
0.0Low
Limit
99.5 V
49.5
24.5
4.5
-0.5Hi
Limit
100.5 V
50.5
25.5
5.5
0.5 Milliamp Source, Power & measure 2-wire
transmitters, Read Milliamps, Read Transmitter Test
Jacks. Simulate 2-wire Transmitters operates from
1.000 to 24.000 mA.