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Altek’s Model 211 RTD Calibrator lets you simulate and read RTDs over the entire industrial temperature range. Use with transmitters, single & dual channel recorders, controllers, alarms and indicators. Switch between four Pt 100, one Pt 1000, one Cu 10, two Ni RTD curves or ohms ranges from 0.00 to 410.00 and 0.0 to 2010.0. Field customize the Model 211 to lock-in 1° resolution, fixed ° C or ° F or front selectable ° F/° C operation. Read and simulate 2-wire and automatically compensate for 3-wire RTDs with built-in leads. A plug-in lead is supplied for 4-wire RTD measurements. RTD types may be selected each time the unit is turned on. If you always use one RTD curve, lock-in the selected RTD type with the internal DIP switch to prevent accidental change to an unwanted RTD type.
Altek 211 Technical Specifications:
Accuracy: ±0.025%; ±0.013% typical
Temperature drift: ±0.01 %/°C
Operating temperature range: -5 to +140° F (-20 to +60° C)
Storage temperature range: -22 to +175° F (-30 to +80° C)
Relative humidity: 10 to 90%, non-condensing
Warm up time: 30 seconds to maximum accuracy
Overload protection: Electronically protected to 40 VDC between leads 1 & 2, fuse protected to 125 VAC, 5A between leads 2 & 3
Battery life: 9 Volt Alkaline: 50 hours
Low battery: “BAT” indication on LCD at 7 Volts nominal, approximately 10 hours left
Overall size: 2 1/2 x 2 5/8 x 5 1/8 inches (63.5 x 66.7 x 130 mm)
Leads: Approximately 18" (0.46m) terminated with spade lugs
Weight: 11.5 oz. (0.33 kg)
Carrying case: Included, zippered with belt loop
Simulate RTD or resistance
Output resistance range: 0.00 to 2010.0 Ohms
Ohms: 0.00 Ω to 410.00 Ω (±0.10 Ω); 0.0 Ω to 2010.0 Ω (±0.50 Ω)
Allowable external excitation current: 0.090 to 5.800mA, DC
Intermittent excitation current mode: Accepts intermittent excitation currents
with minimum 125 msec fixed current at minimum repetition rate of 1/sec from 0.090 to 5.800mA
Measuring RTD sensors
Excitation current supplied: 1 mA, nominal
Normal mode rejection: 50/60 Hz, 50 db
Common mode rejection: 50/60 Hz, 100 db
RTD type | Alpha | Range °C | Accuracy °C | Range °F | Accuracy °F |
Pt 100 (DIN/IEC/JIS 1989) | 1.3850 | -200.0 to 850.0 °C | ±0.15 °C | -328.0 to 1562.0 °F | ±0.25 °F |
Pt 100 (Old JIS 1981) | 1.3916 | -200.0 to 648.9 °C | ±0.15 °C | -328.0 to 1200 °F | ±0.25 °F |
Pt 100 (Burns) | 1.3902 | -195.6 to 648.9 °C | ±0.15 °C | -320.0 to 1200 °F | ±0.25 °F |
Pt 100 (US Lab) | 1.3926 | -200.0 to 862.0 °C | ±0.15 °C | -328.0 to 1584 °F | ±0.25 °F |
Pt 1000 (HVAC) | 1.3750 | -184 to 275 °C | ±0.10 °C | -300 to 527 °F | ±0.15 °F |
Cu 10 (Minco) | 1.4274 | -200 to 260 °C | ±1.10 °C | -328 to 500 °F | ±2.00 °F |
Ni 120 (Pure) | 1.6720 | -80.0 to 273.0 °C 273 to 316 °C | ±0.10 °C | -112.0 to 524.0 °F 524 to 600 °F | ±0.15 °F |
Ni 110 (Bristol 7 NA) | 1.5801 | -106.7 to 315.6 °C | ±0.10 °C | -160.0 to 600 °F | ±0.20 °F |