Add to that dual inputs, an easy to view backlit display, plus the ability to memorize settings at power down for easy restart make the 712B the ideal test tool for temperature calibration professionals who want a highly accurate, easy-to-use, single function RTD temperature calibrator. Other useful features: Dual inputs and backlit display for easy interpretation of measurements Remembers power down settings to easily restart tests when powered up Provides linear ramp and 25% step auto ramp based on 0% and 100% settings Provides one-year and two-year specifications and traceable certification of calibration Specifications: Fluke 712B RTD Calibrators 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 m Storage altitude 12,000 m 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 m IP Rating IEC 60529: IP52 Electromagnetic environment IEC 61326-1, Portable Safety IEC 61010-1, Max 30 V to earth, Pollution Degree 2 Power supply 4 AA NEDA 1.5A IEC LR6 batteries Size (H x W x L) 52.5 x 84 x 188.5 mm Weight 515 g 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 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 10 Ω 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 50 Ω 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
