Altek 134 mA Source2Wire Simulator Manual

							ALTEK INDUSTRIES CORP
ALTEK DATA SHEET
MILLIAMP CALIBRATORS
Models 46, 134
134
ALTEK’s pocket sized milliamp calibrators offer  2-Wire transmitter simu-
lators as well as milliamp sources. Each model give you ease of use,
as well as accuracy and ruggedness both.
When you check out receivers, recorders or controllers in a 2-Wire 4 to
20mA loop, simply disconnect the 2-Wire transmitter and hook up a
Model 46 or 134 in 2-Wire mode. Flip a switch to get instant Full Scale
and Zero outputs. The calibrators operate just like a
2-Wire transmitter by modulating the external power supply
voltage into a 4 to 20mA signal.
In the control room, shop, or field, use the Model 134 as a precise
4 to 20mA Source. Stroke valves, set trip points or calibrate receivers
or recorders. Easily replaceable 9 Volt alkaline batteries will source 20
milliamps 
continuously for over 25 hours. Many users can go for months
between battery changes!
Used as a 2-Wire Transmitter Simulator the Model 134 receives
all of its operating power from the loop. This lets you operate
continuously for days when long term loop testing is required.
Use it as a manual loading station when a controller needs repair
or replacement. Minimize process shutdowns installing a new
controller.
High efficiency design typically gives you months of operation
before replacing the batteries. Optional AC adapters are available for full-
time bench use.
OTHER PRODUCTSAltek designs and manufactures fast, accurate instruments for mea-
surement, generation and simulation of virtually every process control
signal. Consult our factory directly or contact your local stocking
representative to order precise, low cost Milliamp Calibrators, Voltage
Sources, Direct Thermocouple Sources, RTD Simulators and Fre-
quency Sources. Altek also produces calibrators for custom ranges
and unique applications. Additional models and ranges are frequently
added to the Altek instrument family to meet all of your critical
calibration requirements. Altek products are made in the USA.
MODEL 46
• 2-WIRE SIMULATOR
Calibrate Receivers
• 5 POINT CALIBRATION 4, 8 12, 16, 20mA
• LOOP POWERED No Batteries Required
• EASY TO USE
One Hand Operation
Simulate 2-Wire Transmitters to calibrate
receivers, recorders, controllers, indicators
and computers. Loop Power eliminates the
need for batteries. Loop current is CLAMPED
at the key value you select. Accuracy is
±0.08% of 4 to 20mA, even with changes in
load and supply voltage.
Switch settings of 0, 25, 50, 75 and 100%
give you fast, full range checkout of instru-
ment or system. The single switch and palm
sized case have been designed for simple,
one handed operation. Just clip the Built-in
leads to the 2-Wire terminals in the Field,
Junction Box or Control Room.Calibrate computers, receivers and control-
lers with unparalled ease. The Model 134
is also ideal for setting current trips and
stroking valves. Built-in batteries supply
20mA loads from 0 to 1000 Ohms (typically
3 months of field use).
Simulate any 2-Wire Transmitter without
using internal batteries. Current stays at de-
sired value even with changes in load and
supply voltage.
“ QUIK-CHEK ” switch gives you instant
settings of 0 and 100% for both the mA
Source and 2-Wire Simulator. Set any value
in dial position using the 10 turn continuous
adjustment.
MODEL 134
• MILLIAMP OUTPUT
Sources 4-20mA
• 2-WIRE SIMULATOR
Field or Panel
• “QUIK-CHEK
® ” SWITCH
Instant 4.00 & 20.00mA
• CONTINUOUS DIAL
0.02% Resolution 
						

							000 062(5)  100  200  250  300  400  500 562(5)  600  700  750  800  900  000
134 (LINEAR)4.00 5.00 5.60 7.20 8.00 8.80 10.4 12.0 13.0 13.6 15.2 16.0 16.8 18.4 20.0
(0, 25, 50, 75, 100% D/P FLOW)0% 25% 50% 75% 100%
OPERATING INSTRUCTIONS
250
ALTEK134BATTERYCHECK LOOP
ON
• mA OUT   100% •
• OFF    DIAL •
• 2-WIRE      00.0% •
4-20mA
00.0-100%
mA SOURCE
2 WIRE SIMULATOR0.1%ALTEK INDUSTRIES CORP.
ROCHESTER, N.Y. 14623   U.S.A.
COMPUTER RECEIVERLOGGER VA LV E
MODEL
134
500
ALTEK134BATTERYCHECK LOOP
ON
•  mA OUT   100%  •
•  OFF    DIAL  •
•  2-WIRE     00.0%  •
4-20mA
00.0-100%
mA SOURCE
2 WIRE SIMULATOR0.1%ALTEK INDUSTRIES CORP.
ROCHESTER, N.Y. 14623   U.S.A.
SENSORSPAN ZERO
RECEIVER
(Powers External
2-Wire Transmitters)
POWER
SUPPLY
MODEL 46, 134
2-WIRE TRANSMITTER
ORDERING INFORMATION:                 Part No.Model 46       2-Wire Transmitter Simulator          46-0420
Model 134     4 to 20mA Source/2-Wire Simulator        134-0420
AC Adapters for Models 134       120 VAC Adapter          28-0120
      240 VAC Adapter          28-0240
Carrying Case          09-3781WARRANTYOur equipment is guaranteed against defective material and work-
manship (excluding batteries) for a period of three years from date
of shipment. Claims under guarantee can be made by returning the
equipment prepaid to our factory. The equipment will be replaced,
repaired or adjusted at our option. No responsibility is accepted for
damage, loss or other expense incurred through sale or use of our
equipment. Under no condition shall Altek be liable for any special,
incidental or consequential damage.
ACCURACY:
MODEL 46 …±0.08%
MODEL 134
Dial:  ±0.1% from 1% to 99%
“ QUIK-CHEK ” Switch:  ±0.08% at 0.00% and 100.0%
TEMPERATURE EFFECT:  ±0.01%/Degree C
OPERATING TEMPERATURE RANGE: -10 to 140 °F (-25 to +60 °C)
STORAGE TEMPERATURE LIMITS: -40 to +160 °F (-40 to +70 °C)
POWER SUPPLY EFFECT:  ±0.005%/Volt
WARM UP TIME: 2 Seconds to rated accuracy
WEIGHT:
Model 46 …3 ounces (85 grams)
Models 134 …12 ounces (340 grams)
SIZE:
Model 46 …11/2x21/8x31/4 inches (38x54x63 mm)
Models 134 …21/8x4x21/4 inches (54x102x55 mm)
LOOP VOLTAGE LIMITS:
Models 46 & 134 …6 to 45 VDC
2-WIRE SIMULATOR MODE
Models 46,134
1) Disconnect existing 2-Wire transmitter from the loop
2) Put the Mode selector switch (Models 134) into the 2-Wire  position
3) Connect the red lead of the calibrator to the plus (+) terminal of\
 the field connections and the black lead to the minus (-).
The LED will glow steadily to indicate that the loop current is present.\
If the LED doesn ’t glow, check the connections and the power supply.
Select the 0.0% and 100.0% switch positions to quickly calibrate
the endpoints of your receivers. Intermediate positions of 25, 50
and 75% may be selected with the Model 46. Use the digital dial on
the Models 134 to select any value from 0.0 to 100.0% (a setting of
645 on the dial is equal to 64.5%).
SOURCE MODE
Models 134
1) Disconnect one or both wires from the device to be calibrated
2) Connect the red lead of the calibrator to the plus (+) input of th\
e device and the black lead to the minus (-).
3) Move the Mode to mA OUT
The LED on the Model 134 will glow steadily only when current is
flowing through the loop. If the LED doesn ’t light, check the batter-
ies and connections.
Output current is continuously adjustable with the  “QUIK-CHEK ”
switch in the DIAL position. Exact 0.0 and 100.0% outputs are avail-
able by using the 0.0 and 100.0%  “QUIK-CHEKs ”.
SPECIFICATIONS
OUTPUT DRIVE CAPABILITY:
Model Fresh Batteries or AC Adapter        Battery Low Limit
134 1000 Ohms 800 Ohms
BATTERY LIFE:  (Nominal):
Model 
 Nominal Life —Alkaline Battery134        25 hours at 20mA continuous output      (3-9 Volt)
Batteries should be removed when storing the unit for >3 months.
Battery Check:
Model 131 …LED will glow when the power switch is held in the
BATTERY CHECK position
Model 134 …LED will pulse once when the power switch is
moved to the mA OUT position
(Unless otherwise indicated, specifications are in 
±% of Span @ 23 °C)
DIGITAL DIAL SETTING vs MILLIAMPS
AVAILABLE FROM:
MODEL Reading on Dial Clockwise  ➨
MILLIAMPS
© June 1999 Altek Industries Corp 
                   Model 46:100893, Model 134:100885-900 REV:ASpecifications subject to change without notice
SPECIFICATIONS