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720350-2 Biddle Digital Thermocouple/Millivolt Test Set
- Measuring temperature with thermocouples (J, K, T, E, R, S, C, mV).
- Comparison of working and reference thermocouples.
- Measuring millivolts from thermocouples or other sources.
- Calibrating thermocouple-type recorders, controllers, indicators, and other instruments of the deflection, null-balance, or digital type.
- Calibrating millivolt-type recorders, controllers and indicators.
- Troubleshooting in thermocouple or millivolt dc control loops.
Input resistance (Measure Mode):
>1000MΩ
Source Resistance Effect (Measure Mode):
2KΩ Source resistance causes less than one digit error on all ranges.
Output Mode Resistance:
<40Ω
Reference Junction Compensation:
Thermocouple ranges- automatice; Millivolt range- none
Warm-up Time (for specified limit of error):
<One Minute for 1° or 0.01 mV ranges
<15 minutes for 0.1° or 0.001 in MV ranges
Settling time to rated accuracy:
0.5 second after input change.
Overvoltage:
120V dc or 120V ac RMS continous without damage, except in output mode.
Normal mode rejection:
>50dB @50/60Hz.
Common mode rejection ratio:
Operating on batteries: not applicable.
Operating on AC: >140dB with 200V isolation
Operating Modes:
selectable by rotary switch.
Range Selector Switch:
8-range: 8-position rotary switch (J, K, T, E, R, S, C, mV).
Output Adjust Control:
Continously adjustable dual-know potentiometer. Course 9-Turn potentiometer, Fine single-turn potentiometer.
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