Wet/Wet Differential Pressure Transmitter- Series 645
4-20 mA signal. Two, three or four wire operation. Ranges to 6000 psi.
Series 645 Wet/Wet Differential Pressure Transmitters are designed for use with compatible gases and liquids which can be applied to both the pressure and reference ports. Quick response capacitance sensor delivers a 4 to 20 mA output signal proportional to differential pressure with +/- 0.25% accuracy. The Series 645 transmitters are ideal for process control, filter condition monitoring, refrigeration equipment, pump speed control, HVAC equipment, and liquid level measurement.
PHYSICAL DATA.
| Service: | Compatible gases or liquids on both pressure and reference sides. |
|---|---|
| Output: | 4 to 20 mA, 2-wire. |
| Supply Voltage: | 11 to 30 VDC. |
| Loop Resistance: | 0 to 1000W. |
| Zero and Span: | Adjustable, non-interactive. |
| Max Line Pressure: | 250 psig. |
| Max Overload Pressure: | (High side) 1 to 5 psi: 20 x FS, 10 to 25 psi: 10 x FS, 50 psi: 5 x FS, 100 psi: 2.5 x FS; (Low side) 2-3 x FS. |
| Temperature Limits: | Operating: 0 to 175°F (-22 to 80°C), Storage: -65 to 260°F (-54 to 126°C) |
| Accuracy: | +/- 0.25% FS (RSS). |
| Response Time: | 30 to 50 msec. |
| Thermal Effects: | (includes zero and span) +/- 0.02% FS/°F, 30 to 150°F (-1 to 65°C). |
| Wetted Parts: | 17-4 PH stainless steel, 300 Series stainless steel, Viton and Silicone O-rings and bleed screw seals. |
| Housing: | Stainless steel/ Aluminum. |
| Process Connection: | ¼" - 18 NPT(F). |
| Electrical Connection: | Barrier strip terminal block with conduit enclosure and .875" (22mm) diameter conduit opening. |
| Weight: | 14.4 oz (0.4 kg). |
MODULE MODELS
| Model Number | Range | Model Number | Range |
|---|---|---|---|
| 645-1 645-2 645-3 645-4 645-5 645-6 |
0 to 2 psid 0 to 5 psid 0 to 10 psid 0 to 25 psid 0 to 50 psid 0 to 100 psid |
645-11 645-12 645-13 645-14 645-15 645-16 |
±1 psid ±2.5 psid ±5 psid ±10 psid ±25 psid ±50 psid |