Altek TechChek Model 830 Manual

Process CalibratorTechChek™ 830 

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Your New TechChek 830
Lighten your load…take the TechChek 830 to every site.
It’s like bringing a cartload of test equipment from the shop
to the control room or the field. The TechChek 830 sources
and reads DC like a milliamp or voltage calibrator, simulates
and measures T/Cs & RTDs like a temperature calibrator,
generates and counts frequency and Counts-Per-Minute
like a frequency calibrator and displays pressure like a preci-
sion test gauge. Troubleshooting? It checks continuity with a
beeper and...

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water at a variety of temperatures.Each module is fully
characterized for temperature and linearity to give you labora-
tory accuracy in the shop, control room or field.
Voltage Calibration
Calibrate all your DC millivolt and voltage instrumenta-
tion. Source from 0.00 to 110.00 mV and 0.00 to 10.25 V.
Read up to 110.00 mV, 11.00 V and 200.0 VDC.
Temperature Calibration
Source and Read directly in °C and °F for T/C types J,
K, T, E, R, S & N and four Pt 100 Ohm, Ni 120 Ohm and Cu
10 Ohm RTDs....

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GENERAL
CONFIGURING TEMPERATURE SCALES
The thermocouple and RTD ranges may be configured for full time
use of °C, full time use of °F or selectable °C and °F operation.
This configuration is part of the DEFAULT SETTINGS below.
AUTO-OFF
TechChek 830 can be set up to turn itself off after 30 minutes of
inactivity. The internal timer is reset to 30 minutes each time the
digital pot is turned or a pushbutton is pressed.
DEFAULT SETTINGS
TechChek 830 may be restored to the factory default setting. This
will...

GENERAL
SELECTING FUNCTIONS
Turn the selector knob to choose among
mA, V, T/C, Ω, RTD, FREQ and
PRESSURE.
SELECTING RANGES
Press the TYPE/ENG UNIT pushbutton to
select the desired range and scale. 
SOURCE RANGES
Milliamp:
Source: mA, %mA (% 4-20), DP% (% Differential Pressure) 
2-Wire Simulator: mA, %mA (% 4-20), DP% (% Differential Pressure)
VDC: mV, V
T/C: Types J, T, E, K, N, R & S in °C &°F
Ohms: Ohms
RTD: Four Pt 100Ω, Ni 120Ω& Cu 10Ωin °C &°F
Frequency: KHz, Hz, CPM
READ RANGESMilliamp: mA, %mA (%...

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CALIBRATE MILLIAMP INPUTS
mA, mA % (Percent of 4 to 20 mA), DP% (DP Flow)
Choose this function to provide an output from 0.00 to 24.00
milliamps. The compliance voltage is a nominal 24 VDC to provide
the driving power to your milliamp receivers.
1) Disconnect one or both input wires from the device to be
calibrated.
2) Turn the Selector Knob to mA
3) Press the DISPLAY/SOURCE/READ push-button until SOURCE
or 2-WIRE appear on the display
4) If 2-WIRE is on the display, press the TYPE/ENG UNITS push-...

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CALIBRATE VOLTAGE INPUTS
V,  m V
Choose this function to provide an output from 0.00 mV to 110.00
mV and from 0.00 to 10.25 VDC. Current compliance up to 20 mA
to provide the driving power to your voltage receivers.
1) Disconnect one or both input wires from the device to be
calibrated
2) Turn the Selector Knob to V
3) Press the DISPLAY/SOURCE/READ push-button until SOURCE
and V or mV appear on the display
4) Press the TYPE/ENG UNITS push-button once to switch
between V and mV on the display
5)...

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CHECK 1-5 VOLT INPUTS
WITHOUT DISCONNECTING WIRES
Most 1-5 Volt receivers in 4-20mA loops have a 250 Ohm resis-
tor across the input of the receiver. This resistor may be mounted
internally or externally. TechChek 830 is connected directly across
the input of the 1-5 Volt receiver without disconnecting any field
wiring. This saves a great deal of time when a large number of
voltage receivers, such as chart recorders or computer systems,
require calibration.
Make certain that changing the signal...

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CALIBRATE RESISTANCE INPUTS
Choose this function to simulate a resistance into a variety of
instruments. 
1) Disconnect one or both input wires from the device to be
calibrated
2) Turn the Selector Knob to Ω
3) Press the DISPLAY/SOURCE/READ push-button until SOURCE
appears on the display
4) Connect the red SOURCE lead of the calibrator to the plus (+)
input of the device and the black SOURCE lead to the minus (-). OPERATING INSTRUCTIONS
REDBLACK
Receiver InputOhms or 2-Wire R
TD
Controller...

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OPERATING INSTRUCTIONS
REDBLACK
BLACK
Instrument withRTD Input
Controller
Temperature Transmitter
Temperature Indicator
Temperature Trip or Alarm
REDBLACK
Receiver InputOhms or 2-Wire R
TD
Controller
Transmitter
Computer
Three Wire RTD ConnectionTwo Wire RTD ConnectionCALIBRATE RTD INPUTSFour Wire RTD Connection
SENSOR}
+ COMP
- COMP
Jumper
Jumper
REDBLACK
CALIBRATE RTD INPUTS
Choose this function to simulate a temperature signal into any
instrument requiring an RTD input. 
1) Disconnect the RTD...