Pressure Transmitter- Series 639
Precision, Accuracy ±0.08%, Two-wire Operation
The Series 639 Pressure Transmitters offer outstanding performance for critical applications with an accuracy of 0.08% F.S. Best Straight Line for combined effects of non-linearity, hysteresis, and repeatability. Ideal for industrial environments, sensor resists effects from shock and vibrations. Zero and span trimpots located on the rear of the transmitter body can be independently adjusted. Transmitters feature RFI and EMI, reverse polarity, and over voltage protection. Units are supplied with a calibration certificate and a 3 foot (1m) integral cable with stripped ends for easy installation.
| Service: | Liquid, Gas or Vapor |
|---|---|
| Output: | 4-20 mA DC, max. (2 wire) |
| Supply Voltage: | 9 to 30 VDC |
| Loop Resistance: | 750
@ 24 VDC |
| Temperature Limits: | Ambient 15 to 122°F (-10 to 50°C). Process Interface -20 to 250°F (-29 to 121°C) |
| Overrange: | 300% upper range limit |
| Accuracy: | ±0.08% FS BSL including non-linearity, hysteresis, and repeatability |
| Stability: | 0.1% F.S. annually |
| Zero and Span Adjustable: | ±5% each |
| Thermal Effect: | (includes zero and span) 0.005% F.S./°F, -20 to 250°F (-29 to 121°C) |
| Wetted Parts: | 316 SS, Hastelloy C |
| Storage Temperature: | -40 to 250°F (-40 to 121°C) |
| Fill Fluid: | Silicone oil |
| Process Connection: | ¼" NPT(F) |
| Electrical Connection: | 3 ft. (1 m) integral cable with stripped ends |
| Weight: | 1.1 lbs. (0.50 kg) |
| Model Number | Pressure Range |
|---|---|
| 639-0 639-1 639-2 639-3 639-4 |
0 to 1.5 psig ( 0 to 0.1 bar) 0 to 10 psig (0 to 0.7 bar) 0 to 30 psig (0 to 2 bar) 0 to 100 psig (0 to 7 bar) 0 to 300 psig (0 to 20 bar) |
SUGGESTED SPECIFICATIONS :- Pressure Transmitter shall have an accuracy of ±0.08% FS BSL with non-interacting adjustable zero and span potentiometers. Transmitter shall have RFI, EMI, reverse polarity, and over voltage protection. Unit shall be UL approved intrinsically safe for Class I, II & III, Division 1 & 2, Groups C, D, E, F & G. Pressure transmitter shall be Dwyer Model No. 639____.