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Series 644 High Accuracy Pressure Transmitter
Brand: Dwyer Instruments, LLCThe 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.
Features- High accuracy provides exceptional measurement for insuring tight-control and minimizing costly out of specification conditions
- NIST calibrated to provide traceability for regulated processes where production and documentation is monitored
- Low thermal error over a wide range of temperatures helps to insure accurate pressure measurement and process operation
1 - 12 of 96 Part Numbers
644-B-C-00-P
- Electrical Connection - 6-Pin Bayonet
- Output - 4-20 mA
- Pressure Range - psig: -14.7 to 0 (bar: -1.01 to 0, kPa: -101.4 to 0)
- Process Connection - 1/4” Male NPT
644-B-C-00-S
- Electrical Connection - 6-Pin Bayonet
- Output - 4-20 mA
- Pressure Range - psig: -14.7 to 0 (bar: -1.01 to 0, kPa: -101.4 to 0)
- Process Connection - 7/16”-20 Male SAE
644-B-C-01-P
- Electrical Connection - 6-Pin Bayonet
- Output - 4-20 mA
- Pressure Range - psig: 0 to 15 (bar: 0 to 1.03, kPa: 0 to 103)
- Process Connection - 1/4” Male NPT
644-B-C-01-S
- Electrical Connection - 6-Pin Bayonet
- Output - 4-20 mA
- Pressure Range - psig: 0 to 15 (bar: 0 to 1.03, kPa: 0 to 103)
- Process Connection - 7/16”-20 Male SAE
644-B-C-02-P
- Electrical Connection - 6-Pin Bayonet
- Output - 4-20 mA
- Pressure Range - psig: 0 to 25 (bar: 0 to 1.72, kPa: 0 to 172.4)
- Process Connection - 1/4” Male NPT
644-B-C-02-S
- Electrical Connection - 6-Pin Bayonet
- Output - 4-20 mA
- Pressure Range - psig: 0 to 25 (bar: 0 to 1.72, kPa: 0 to 172.4)
- Process Connection - 7/16”-20 Male SAE
644-B-C-03-P
- Electrical Connection - 6-Pin Bayonet
- Output - 4-20 mA
- Pressure Range - psig: 0 to 50 (bar: 0 to 34.5, kPa: 0 to 344.7)
- Process Connection - 1/4” Male NPT
644-B-C-03-S
- Electrical Connection - 6-Pin Bayonet
- Output - 4-20 mA
- Pressure Range - psig: 0 to 50 (bar: 0 to 34.5, kPa: 0 to 344.7)
- Process Connection - 7/16”-20 Male SAE
644-B-C-04-P
- Electrical Connection - 6-Pin Bayonet
- Output - 4-20 mA
- Pressure Range - psig: 0 to 100 (bar: 0 to 6.89, kPa: 0 to 689)
- Process Connection - 1/4” Male NPT
644-B-C-04-S
- Electrical Connection - 6-Pin Bayonet
- Output - 4-20 mA
- Pressure Range - psig: 0 to 100 (bar: 0 to 6.89, kPa: 0 to 689)
- Process Connection - 7/16”-20 Male SAE
644-B-C-05-P
- Electrical Connection - 6-Pin Bayonet
- Output - 4-20 mA
- Pressure Range - psig: 0 to 150 (bar: 0 to 10, kPa: 0 to 1,000)
- Process Connection - 1/4” Male NPT
644-B-C-05-S
- Electrical Connection - 6-Pin Bayonet
- Output - 4-20 mA
- Pressure Range - psig: 0 to 150 (bar: 0 to 10, kPa: 0 to 1,000)
- Process Connection - 7/16”-20 Male SAE
1 - 12 of 96 Part Numbers
Specifications
Brand
Accuracy
- ± 0.05 % of Full Scale RSS
- Total Error Band: < ± 0.25 % of Full Scale over Entire
Approvals & Certifications
- CE
Compensated Temperature
- -20° to 60° C (-4° to 140° F)
Consumption
- 20 mA
- 22 mA
Electrical Connectors
- 3 feet Cable
- 6-Pin Male Bayonet Connector
Environmental Protection
- IP65
- NEMA 4X
Loop Resistance
- Minimum (Vdc) = 9 + 0.02 x Resistance of Receiver Plus Line
Media
- Compatible Gases
- Compatible Liquids
NPT Connection
- 1/4” NPT Male
Output
- 0-10 Vdc, 4-Wire
- 4-20 mA, 2-Wire
Power Requirement
- 9-30 Vdc for Current Output
Pressure Range
- bar: -1 to 69
- kPa: -100 to 6,900
- psig: -14.7 to 1,000
Pressure Type
- Gauge
Response Time
- < 10 milliseconds (Voltage Output)
- < 80 milliseconds (Current Output)
SAE Connection
- 7/16”-20 SAE Male
Sensor Orientation
- Vertical
Stability
- < 0.15 % of Full Scale Per Year
Temperature Range
- -40° to 85° C (-40° to 185° F)
Wetted Materials
- 630 Stainless Steel
- Calibration equipment
- Test benches
- Pulp and paper mills
- Hydraulic/pneumatic controls
- Transportation
- Power generation