PHYSICAL 
DATA 





Input: 

 
2 or 3 wire Pt100 
RTD (models 651A), or ungrounded Type K
 thermocouple (models 651TC) 


Output: 
 
4-20 mA DC, 
linearized 

Transmitter Type: 
 
2 wire 


Power 
Supply: 
 
10-32 VDC, 
reverse connection protected 

Loop 
Resistance: 
 
700 @ 24 VDC 

Accuracy: 
 
±0.2°C plus 0.2% 
reading (models 651A), ±0.1% FS plus cold junction
 errors (models 651TC) 


Temperature Stability: 
 
ZERO drift 
typical 0.02%/°D (0.99°F), SPAN typical 0.005%/°C (0.0035°F) 

Response Time: 
 
10-90% in 200 ms 
(models 651A), 70% in 2 ms (models 651TC) 

Ambient Operating Temperature: 
 
32 to 122°F (0 to 
50°C) 

Maximum Storage Temperature: 
 
160°F (70°C) 









Model 
Number 

Input Type 


Range, °C 
(°F) 


651A-10
651A-20
651A-40
651TC-01
651TC-02
651TC-04
651TC-06

Pt100 
RTD
Pt100 RTD
Pt100 RTD
Type K Thermocouple
Type K 
Thermocouple
Type K Thermocouple
Type K Thermocouple

0-100 
(32-212) 
0-200 (32-392) 
0-400 (32-752) 
0-100 (32-212) 
0-200 
(32-392) 
0-400 (32-752) 
0-600 (32-112) 

 
-도면