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Documents: 668-1

Instruction Manual Series 668 Catalog Page 668 More Info

668-1 | Differential pressure transmitter | range 0-0.25" w.c. | Dwyer

Differential pressure transmitter, range 0-0.25" w.c.

Brand: DwyerSKU: 668-1

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Overview Details for 668-1

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Differential pressure transmitter | range 0-0.25" w.c.

Series 668 Differential Pressure Transmitter

Ranges from 0 to 100" w.c., Overpressure Protection to 10 psig, ±1% Accuracy

Our low cost Series 668 Differential Pressure Transmitter is capable of measuring low pressures with a ±1% accuracy - ideally suited for proper building pressurization and air flow control. Transmitters can withstand up to 10 psig overpressure with no damage to the unit. Variable capacitance sensor design provides excellent sensitivity and long-term stability. Compact, lightweight design makes installation simple and easy. Units also feature reverse-polarity protection.

Calibration Option available under Accessories.

Product Applications

Variable air volume systems
HVAC
Building management

Good accuracy at low pressure ranges provides exceptional value for ensuring control and minimizing costly out of specification conditions
High overpressure rating eliminates possible damage to unit reducing unnecessary service time

Specifications

Series: 668 Differential Pressure Transmitter
Category/Type: Pressure
Type: Differential Pressure
Series: 668 Differential Pressure Transmitter
Service: Air and non-conductive gases.
Accuracy: ±1% FS (RSS); (includes non-linearity; hysteresis; and non-repeatability).
Temperature Limits: Operating: 0 to 150°F (-18 to 65°C); Storage: -40 to 185°F (-40 to 85°C).
Pressure Limits: 10 psig (0.69 bar).
Compensated Temperature Range: 0 to 150°F (-18 to 65°C).
Thermal Effects: 0.033% FS/°F (0.18% FS/°C).
Supply Voltage: 12 to 30 VDC.
Output: 4 to 20 mA; 2-wire.
Zero and Span Adjustment: ±1 mA; non-interactive.
Response Time: <60 msec.
Loop Resistance: 0 to 800 Ω.
Electrical Connection: Terminal strip.
Pressure Connection: 3/16" OD fitting for 1/4" ID tubing.
Housing: Fire retardant glass filled polyester.
Weight: 3 oz (85 g).
Agency Approval: CE.