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.