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T-350P Dry Block Calibrator. Temperature from room temperature to 350°C (662°F).
T-650P Dry Block Calibrator. Temperature from room temperature to 650°C (1202°F).
T-1200P Dry Block Calibrator. Temperature from 50°C to +1200°C.

T-350P, T-650P and T-1200P models control temperature over an insert in order to calibrate thermocouples, thermoresistances, glass thermometers, thermoswitches etc.
Besides providing high accuracy temperature values, they also allow the measurement of signals generated by thermocouples, thermoresistances and thermoswitches, which are being calibrated.
T-350P, T-650P and T-1200P Dry Block Calibrators perform functions that would require three different types of instruments: dry block, standard thermometer and calibrator for TCs, RTDs, mA, mV, ohms and thermo switches. 

Dry Block for temperature calibration

Model  Description 
T-350P  T-350P Dry Block Calibrator. Room Temperature to 350°C.
T-650P  T-650P Dry Block Calibrator. Room Temperature to 650°C.
T-1200P  T-1200P Dry Block Calibrator. Room Temperature to 1200°C.

Accomplish completely automatic calibrations with or without the use of a computer.
Documenting capabilities: communication with computer and CS-504 Calibration Software.
Portable, compact, provide interchangeable inserts and carrying case.

Dry Block Calibrator Accuracy
T-350P, T-650P up to 0.1°C with internal reference or 0.05ºC with external thermometer.
T-1200P accuracy of up to ±3°C with internal reference or ±0.2ºC with external thermometer.
Dry Block Calibrator Resolution: 
T-350P, T-650P 0.01°C and
T-1200P 0.1°C.
Stability of:
T-350P, T-650P ±0.05°C and
T-1200P ±0.2°C through temperature range.
Presents input for thermocouples, thermo resistance and thermo switches.
Besides generating temperature, they measure the signal from the sensor being calibrated.
Perform TC readings with high precision internal cold junction compensation.
Internal regulated 14VDC power supply and mA input for 2-wire transmitters. Make no use of external
standard thermometers.