Dwyer Sales Department: 1-201-419-6111 ext. 26 for Sales Group  |  dwyer@nciweb.com


 

Dwyer Series 650 Temperature Transmitter

The Dwyer Series 650 Temperature Transmitter combines low cost with small size making it ideal for a wide variety of HVAC, industrial and commercial multi-point temperature monitoring applications. Non-polarized terminals simplify connection to any 12-35 VDC power supply. Capable of operation with long cable runs, Series 650 Transmitters are well suited for monitoring air or water temperatures at remote locations. Three models are stocked in popular ranges factory calibrated within 0.3% of span. All are linear within 0.25% of span and may be recalibrated within low range and span limits shown in chart. Low Range is temperature corresponding to 4 mA output. Span is temperature difference between Low and High Ranges corresponding to 4-20 mA output signal. Refer to Bulletin E-62 for complete details.
 
SERIES 650 TRANSMITTER MODELS AND RANGES
Model Number
Range
As Stocked

Low Range Limits
T/C Type, Range
Min.
Max.
Min.
Max.
650-1
-23° to +10°C
-32°C
-14°C
24°C
48°C
650-2
-7° to +49°C
-12°C
+6°C
37°C
150°C
650-3
0° to +100°C
Consult factory for special ranges calibrated within the limits of -55°C and +180°C.
 
PHYSICAL DATA
Power Supply:   12-35 volts DC
Output Signal:   4-20 mA DC
Voltage Stability:   Output error less than 0.01% of span over the specified supply voltage range
Linearity:   Within 0.25% of span
Thermal Drift:   Less than 0.5% of span over ambient temperature range of 0 to 50°C (32 to 122°F)
Ambient Operating Temperature
(Electronics):
  0 to 70°C (32 to 158°F)
Maximum Temperature (Probe):   204°C (400°F)
Probe Construction:   6" long, 0.25" O.D. Type 304 Stainless Steel
Probe Cable Length:   7 feet
Initial Calibration:   Within 0.3% of span at 20°C (68°F) ambient
 

Series 651 Temperature Transmitter

RTD or Thermocouple Input, Zero and Span Adjust, Linearized 4-20 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 BS 1904) or ungrounded Type K thermocouples. Thermocouple models 651TC are cold junction compensated, automatic 0 to 70°C with upscale burnout. These economical devices provide the accuracy and reliability you need at the lowest possible cost.
 
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)
 
Models and Ranges
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)
 
ACCESSORY
A-709, Optional enclosure for Series 651 Transmitters. NEMA 1 protective housing is 3" x 2 1/8" (76mm x 54mm). Supplied with mounting hardware, strain relief fitting and assembly instructions.
 
 
 
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