Dwyer 668 Differential Pressure Transmitter
Prices starting at:
$240.10
Call for Availability
SKU
668
Dwyer's 668 differential pressure transmitter measures air and non-conductive gases in low pressures from 0" to 100" WC with ±1% accuracy and overpressure protection to 10 PSIG. A variable capacitance sensor design provides sensitivity and long-term stability. Comes with two-wire 4-20 mA output, zero and span adjustments ±1 mA.
- Typical applications include variable air volume systems, building management, and HVAC.
- Good accuracy at low pressure ranges ensures control and minimizes costly out-of-specification conditions
- High overpressure rating eliminates possible damage to unit reducing unnecessary service time
- Compact, lightweight design makes 668 transmitter installation simple and easy. Units also feature reverse-polarity protection.
- Process limits: 0° to 150° F, 10 PSIG.
- CE approved transmitter has fire-retardant glass-filled polyester housing
- Process connections: 3/16" OD fittings for 1/4" ID tubing
- Powered by 12-30 VDC
Model Selection Guide
Use this table to find the right model for your application. Don't see the option you need? Also available with conduit covers. Call a Lesman sales specialist at 800-953-7626.
| Single Range | Click for Price and Availability | Bi-Directional Range | Click for Price and Availability | |
|---|---|---|---|---|
| 0" to 0.4" WC | 668-19 | 0" to ±0.1" WC | 668-10 | |
| 0" to 0.25" WC | 668-1 | 0" to ±0.25" WC | 668-11 | |
| 0" to 0.5" WC | 668-2 | 0" to ±0.5" WC | 668-12 | |
| 0" to 1.0" WC | 668-3 | 0" to ±1" WC | 668-13 | |
| 0" to 2.5" WC | 668-4 | 0" to ±2.5" WC | 668-14 | |
| 0" to 5.0" WC | 668-5 | 0" to ±5" WC | 668-15 | |
| 0" to 10" WC | 668-6 | 0" to ±10" WC | 668-16 | |
| 0" to 25" WC | 668-7 | 0" to ±25" WC | 668-17 | |
| 0" to 50" WC | 668-8 | 0" to ±50" WC | 668-18 | |
| 0" to 100" WC | 668-9 | -0.05 to 0.20" WC | 668-20 | |
| 4" 303 SS straight static pressure tip with flange, 1/4" hose barb. | A-489 | |||
| 4" 303 SS Static pressure tip with mounting flange, for 3/16" I.D. rubber or plastic tubing. | A-302F-A | |||
| Measuring Range | 0" to 100" WC |
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