Process Calibrators
Specifications
7
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, push and hold, then push
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
Table 3. 712 Supported RTD Types
RTD
Type
Temperature Range and Resolution Allowable Excitation
1
°C
mA
Ni 120 -80.0 to 260.0 0.15 to 2.00
Pt 100 385 -200.0 to 800.0 0.15 to 2.00
Pt 200 385 -200.0 to 630.0 0.15 to 2.00
Pt 500 385 -200.0 to 630.0 0.05 to 0.80
Pt 1000 385 -200.0 to 630.0 0.05 to 0.40
Pt 100 392 -200.0 to 630.0 0.15 to 2.00
Pt 100 JIS -200.0 to 630.0 0.15 to 2.00
Range and Resolution for
Ohms Simulate and Measure
R
2
15.0 Ω to 400.0 Ω
0.15 to 2.00
R
400.0 Ω to 1500.0 Ω
0.05 to 0.80
R
1500.0 Ω to 3200.0 Ω
0.05 to 0.40
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.
Table 4. 712 RTD and Ohms Simulation
Ohms Range Excitation Current from Measurement Device
Accuracy, ±Ω
15 Ω to 400 Ω
0.15 mA to 0.5 mA 0.15
15 Ω to 400 Ω
0.5 mA to 2 mA 0.1
400 Ω to 1.5 kΩ
0.05 mA to 0.8 mA 0.5
1.5 kΩ to 3.2 kΩ
0.05 mA to 0.4 mA 1
Maximum input voltage: 30 V
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