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.
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°), Storage: -40 to 185°F (-40 to 85°C)
Dwyer Omega – Series 668 Compact Differential Pressure Transmitter
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.
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°), 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
± 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
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