Dwyer pressure transmitter Series 644 Industrial Pressure Transmitter
The Series 644 Industrial Pressure Transmitter is a robust transmitter designed for high accuracy pressure applications. Boasting an accuracy of ±0.05% FS RSS (<±0.25% TEB), the 644 is intended for precise measurements in the critical applications of calibration technology, hydraulic/pneumatic controls, and many more laboratory and industrial settings. The Series 644 offers multiple measurement options with two output choices (VDC or mA) and ten psig pressure ranges (optional 0 to 15 psia). The robust and compact all stainless steel Series 644 is available with either a 1/4" male NPT, or 7/16"-20 male SAE process connections. Each transmitter is provided with an 11 point NIST traceable calibration certificate
SPECIFICATIONS
Service: Compatible gases and liquids.
Wetted Materials: 17- 4 PH SS.
Accuracy: 0.05% FS RSS
Total Error Band (Includes all thermal effects): <0.25% FS over entir
temperature compensated range.
Stability: < 0.15% FS/year.
Operating Temperature Limits: -40 to 185F (-40 to 85C
Pressure Limits: Proof pressure and burst pressure: See pressure limits table
below.
Compensated Temperature Range: -4 to 140F (-20 to 60C
Power Requirements:
9 to 30 VDC for current output;
15 to 30 VDC for voltage output.
Minimum Supply Voltage:
Min. supply voltage (VDC) for current output = 9 + 0.02 x loop resistance
(loop resistance = line resistance + receiver resistance).
Output Signal:
0 to 10 VDC (4-wire);
4 to 20 mA (2-wire).
Response Time: < 10 ms (voltage output), < 80 ms (current output).
Max Current Consumption:
4 to 20 mA: 22 mA;
0 to 10 VDC: 20 mA.
Electrical Connections: 3 ft cable or 6-pin male bayonet connector.
Process Connection: 1/4? male NPT or 7/16?-20 male SAE with O-ring.
Enclosure Rating: NEMA 4X (IP65).
Mounting Orientation: Vertical.
Weight: 9 oz (254 g).
Agency Approvals: CE.
| EXAMPLE | 644 | L | V | 01 | P | Series 644-L-V-00-P Industrial Pressure Transmitter, 3 ft. cable, 0-10 V output, range 0 to -14.7 psig, with 1/4" male NPT connection. |
| SERIES | 644 | Industrial Pressure Transmitter | ||||
| ELECTRICAL CONNECTION | L B |
Flying Leads, 3 ft., 6-Conductor Cable Pigtail Male 6-Pin Bayonet |
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| SIGNAL OUTPUT | V C |
0-10 Volts 4-20 mA |
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| RANGE | 00 01 02 03 04 05 06 07 08 09 10 11 |
0-(-14.7) psig 0-15 psig 0-25 psig 0-50 psig 0-100 psig 0-150 psig 0-200 psig 0-300 psig 0-500 psig 0-750 psig 0-1000 psig 0-15 psia |
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| PROCESS CONNECTION | P S |
1/4" Male NPT 7/16"-20 SAE Male |
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