Altek TechChek Model 830 Manual
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1 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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3 2 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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4 5 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...
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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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9 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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11 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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13 12 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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15 14 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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17 16 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...