Series 651 Temperature Transmitter

Temperature Transmitter
RTD or Thermocouple Input, Zero and Span Adjust, Linearized 4 to 20 mA Signal

Linearized output for precise temperature monitoring or control is combined with small size and quick, easy mounting. Rugged Series 651 Transmitters are designed for use with 2 or 3-wire Pt100 RTDs (to DIN standard 43760 or BS1904) or ungrounded Type K thermocouples. Thermocouple Models 651TC are cold junction compensated, automatic 32 to 160°F (0 to 70°C) with upscale burnout. These economical devices provide the accuracy and reliability you need at the lowest possible cost.

Product Applications

  • Process applications where a 4 to 20 mA signal is required
Input: 2 or 3-wire Pt100 RTD (models 651A), or ungrounded Type K thermocouple (models 651TC).
Output: 4 to 20 mA DC, linearized.
Transmitter Type: 2-wire.
Output Impedance: 700 Ω @ 24 VDC.
Power Requirements: 10 to 32 VDC, reverse connection protected.
Accuracy: ±0.2°C plus 0.2% reading (models 651A), ±0.1% FS plus cold junction errors (models 651TC).
Temperature Drift: ZERO drift typical 0.02%/°C (0.09°F); SPAN typical 0.005%/°C 0.0036°F).
Temperature Limits: Ambient: 32 to 122°F (0 to 50°C).
Maximum Storage Temperature: 160°F (70°C).
Response Time: 10 to 90% in 200 ms (models 651A), 70% in 2 ms (models 651TC).
Agency Approvals: CE.
  • Various preset ranges available
  • Pt100 or K type thermocouple models
  • Standard temperature sensor head enclosure mounting