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712 Specifications
712 Calibrator specifications vary based on the version of the instrument. To display the
firmware version for your instrument, start with the 712 off, press and hold {, then
press the power button. Find the section heading below for the displayed version and use
the specification tables in that section to test and calibrate the instrument.
Firmware V1.1 and Earlier
RTD
Type
Ni 120
Pt 100 385
Pt 200 385
Pt 500 385
Pt 1000 385
Pt 100 392
Pt 100 JIS
2
R
R
R
Addresses pulsed transmitters and PICs with pulses ≥ 100 ms.
1: This column is for simulate mode only. It shows the allowable excitation current from an ohmmeter or
RTD measurement device connected to the calibrator.
2: The R annunciator signifies "resistance," not an RTD type. Select it the same way as an RTD type.
Resolution
RTD: 0.1 °C
Ohms: 0.1 Ω
Temperature Coefficient
0.005 % of ohms range per °C for temperature ranges –10 °C to 18 °C and 28 °C to
55 °C. Ohms ranges are 400 Ω, 1.5 kΩ, and 3.2 kΩ.
Ohms Range
15 Ω to 400 Ω
15 Ω to 400 Ω
400 Ω to 1.5 kΩ
1.5 kΩ to 3.2 kΩ
Maximum input voltage: 30 V
Table 3. 712 Supported RTD Types
Temperature Range and Resolution
°C
-80.0 to 260.0
-200.0 to 800.0
-200.0 to 630.0
-200.0 to 630.0
-200.0 to 630.0
-200.0 to 630.0
-200.0 to 630.0
Range and Resolution for
Ohms Simulate and Measure
15.0 Ω to 400.0 Ω
400.0 Ω to 1500.0 Ω
1500.0 Ω to 3200.0 Ω
Table 4. 712 RTD and Ohms Simulation
Excitation Current from Measurement Device
0.15 mA to 0.5 mA
0.5 mA to 2 mA
0.05 mA to 0.8 mA
0.05 mA to 0.4 mA
Process Calibrators
1
Allowable Excitation
mA
0.15 to 2.00
0.15 to 2.00
0.15 to 2.00
0.05 to 0.80
0.05 to 0.40
0.15 to 2.00
0.15 to 2.00
0.15 to 2.00
0.05 to 0.80
0.05 to 0.40
Accuracy, ± Ω
0.15
0.1
0.5
1
Specifications
7
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