For the temperature
calibration professional that wants a highly accurate, easy-to-use,
single function RTD temperature calibrator the Fluke 712B is the ideal
test tool.
Features at a Glance
The 712B can measure and simulate (13) different RTD types and resistance
Measure 4 to 20 mA signals while simultaneously sourcing a
temperature signal Hanging tool designed in and included with every unit
Configurable 0 % and 100 % source settings for quick 25 % linearity checks
Linear ramp and 25 % step auto ramp based on 0 % and 100 % settings
Dual inputs and backlit display for easy interpretation of measurements
Power down settings remembered at power up for easy restart of tests
1-year and 2-year specifications and traceable certification of calibration
DC mA Measurement
Resolution
0-24 mA
Range
0.001 mA
Accuracy (% of reading + counts)
0.010% + 2 μA
Temperature coefficient
± (0.002% of reading + 0.002% of range) /°C ( <18 °C or >28 °C)
Ohms Measurement
Ohms range
Accuracy (% of reading +counts)
0.00 Ω to 400.00 Ω
0.015% + 0.05 Ω
400.0 Ω to 4000.0 Ω
0.015% + 0.5 Ω
Note: Read accuracy is based on 4-wire input. For 3-wire
ohm measurements, assuming all three leads are matched, add 0.05 Ω
(0.00 Ω~400.00 Ω), 0.2 Ω (400.0 Ω~4000.0 Ω) to the specifications.
Temperature coefficient
± (0.002% of reading + 0.002% of range) /°C ( <18 °C or >28 °C)
Ohms Source
Ohms range
1.0 Ω to 400.0 Ω
1.00 Ω to 400.00 Ω
400.0 Ω to 1500.0 Ω
1500.0 Ω to 4000.0 Ω
Excitation current from measurement device
0.1 mA to 0.5 mA
0.5 mA to 3 mA
0.05 mA to 0.8 mA
0.05 mA to 0.4 mA
Accuracy (% of reading + counts)
0.015% + 0.1 Ω
0.015% + 0.05 Ω
0.015% + 0.5 Ω
0.015% + 0.5 Ω
Resolution
0.00 Ω to 400.00 Ω
0.01 Ω
400.0 Ω to 4000.0 Ω
0.1 Ω
Temperature coefficient
± (0.002% of reading + 0.002% of range) /°C ( <18 °C or >28 °C)
Supports pulsed transmitters and PLCs with pulse times as short as 5 ms
RTD Input and Output
RTD Type (α)
Range (°C)
Measure (°C)
Source (°C)
1-year
2-year
Source current
1-year
2-year
10Ω Pt(385)
-200 to 100 °C
1.5 °C
3 °C
1 mA
1.5 °C
3 °C
100 to 800 °C
1.8 °C
3.6 °C
1 mA
1.8 °C
3.6 °C
50Ω Pt(385)
-200 to 100 °C
0.4 °C
0.7 °C
1 mA
0.4 °C
0.7 °C
100 to 800 °C
0.5 °C
0.8 °C
1 mA
0.5 °C
0.8 °C
100 Ω Pt(385)
-200 to 100 °C
0.2 °C
0.4 °C
1 mA
0.2 °C
0.4 °C
100 to 800 °C
0.015%
+0.18 °C
0.03%
+0.36 °C
1 mA
0.015%
+0.18 °C
0.03%
+0.36 °C
200 Ω Pt(385)
-200 to 100 °C
0.2 °C
0.4 °C
500 μA
0.2 °C
0.4 °C
100 to 630 °C
0.015%
+0.18 °C
0.03%
+0.36 °C
500 μA
0.015%
+0.18 °C
0.03%
+0.36 °C
500 Ω Pt(385)
-200 to 100 °C
0.3 °C
0.6 °C
250 μA
0.3 °C
0.6 °C
100 to 630 °C
0.015%
+0.28 °C
0.03%
+0.56 °C
250 μA
0.015%
+0.28 °C
0.03%
+0.56 °C
1000 Ω Pt(385)
-200 to 100 °C
0.2 °C
0.4 °C
250 μA
0.2 °C
0.4 °C
100 to 630 °C
0.015%
+0.18 °C
0.03%
+0.36 °C
250 μA
0.015%
+0.18 °C
0.03%
+0.36 °C
100 Ω Pt(3916)
-200 to 100 °C
0.2 °C
0.4 °C
1 mA
0.2 °C
0.4 °C
100 to 630 °C
0.015%
+0.18 °C
0.03%
+0.36 °C
1 mA
0.015%
+0.18 °C
0.03%
+0.36 °C
100 Ω Pt(3926)
-200 to 100 °C
0.2 °C
0.4 °C
1 mA
0.2 °C
0.4 °C
100 to 630 °C
0.015%
+0.18 °C
0.03%
+0.36 °C
1 mA
0.015%
+0.18 °C
0.03%
+0.36 °C
10 Ω Cu(427)
-100 to 260 °C
1.5 °C
3 °C
1 mA
1.5 °C
3 °C
120 Ω Ni(672)
-80 to 260 °C
0.15 °C
0.3 °C
1 mA
0.15 °C
0.3 °C
50 Ω Cu(427)
-180 to 200 °C
0.4 °C
0.7 °C
1 mA
0.4 °C
0.7 °C
100 Ω Cu(427)
-180 to 200 °C
0.2 °C
0.4 °C
1 mA
0.2 °C
0.4 °C
YSI400
15 to 50 °C
0.2 °C
0.4 °C
250 μA
0.2 °C
0.4 °C
Sensor inaccuracies not included.
Resolution: 0.1 °C.
Read accuracy is based on 4-wire input. For 3-wire RTD measurements,
assuming all three RTD leads are matched, add 1.0 °C (Pt10 and Cu10),
0.6 °C (Pt50 and Cu50), 0.4 °C (Other RTD types) to the specifications.
Source Accuracy in source mode is based on 0.5 mA~3 mA (1.00
Ω~400.00 Ω), 0.05 mA~0.8 mA (400.0 Ω~1500.0 Ω), 0.05 mA~0.4 mA (1500.0 Ω
~4000.0 Ω), excitation current (0.25 mA for Pt1000 range).
Temperature Coefficient: ±0.05 °C /°C for measure, ± 0.05 °C /°C (<18 °C or >28 °C) for source.
Supports pulsed transmitters and PLCs with pulse times as short as 5 ms.
General Specifications
Maximum voltage applied between any terminal and earth ground or between any two terminals
30 V
Operating temperature
-10 °C to 50 °C
Storage temperature
-30 °C to 60 °C
Operating altitude
2,000 meters
Storage altitude
12,000 meters
Relative humidity (% RH operating without condensation)
Non condensing
90% (10 °C to 30 °C)
75% (30 °C to 40 °C)
45% (40 °C to 50 °C)
(Without condensation)
Vibration requirements
MIL-T-28800E, Class 2
Drop text requirements
1 meter
IP Rating
IEC 60529: IP52
Electromagnetic environment
IEC 61326-1, Portable
Safety
IEC 61010-1, Max 30 V to earth, Pollution Degree 2