668 Differential Pressure Transmitter

Capable of measuring low pressures with a 1% accuracy while withstanding up to 10 PSIG of overpressure with no damage

Starting At
$283.00 CAD
Normally ships in 2-3 Weeks

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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.

• 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


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

• Variable air volume systems
• Building management

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