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This all-stainless-steel pressure transducer measures 0 to 300 psi (0 to 20.7 bar) gauge pressure with a 4 to 20 mA output on a mini DIN connector and ±0.25% accuracy. A bonded silicon strain gauge keeps drift low in an IP65 body. It suits pneumatic pressure control and OEM machine pressure sensing.
This all-stainless-steel pressure transducer measures 0 to 300 psi (0 to 20.7 bar) gauge pressure with a 4 to 20 mA output on a mini DIN connector and ±0.25% accuracy. A bonded silicon strain gauge keeps drift low in an IP65 body. It suits pneumatic pressure control and OEM machine pressure sensing.
Omega's PX309 Series models below 100 psi use a high-accuracy silicon sensor protected by an oil-filled stainless steel diaphragm.
Units 100 psi and above use silicon strain gauges molecularly bonded to the stainless steel diaphragm.
Features
Applications
| Series | PX309 Series |
| Product type | Pressure transducer |
| Pressure type | Gauge |
| Pressure range | 0 to 300 psi (0 to 20.7 bar) |
| Output | 4 to 20 mA |
| Electrical connection | Mini DIN |
| Accuracy (combined linearity, hysteresis and repeatability) | ±0.25% BSL maximum |
| Long-term stability (1 year) | ±0.25% of full scale (typical) |
| Bandwidth | DC to 1 kHz (typical) |
| Response time | <1 millisecond |
| Pressure cycles | 10 million minimum |
| Pressure port | 1/4-18 MNPT |
| Proof (overload) pressure | 2 times rated pressure |
| Burst pressure | 5 times rated pressure |
| Wetted material | 316 or 17-4 PH stainless steel (0 to 500 psi models may contain an HNBR O-ring in the wetted pressure port assembly) |
| Sensing element | Silicon strain gauges molecularly bonded to a stainless steel diaphragm |
| Housing | All 316 stainless steel |
| Minimum insulation resistance | 1 MΩ at 25 V DC (transducer body to any wire) |
| Operating temperature | -40 to 185°F (-40 to 85°C) |
| Shock | 50 g, 11 ms half-sine |
| Vibration | ±20 g |
| Enclosure rating | IP65 |
| Calibration | 5-point NIST-traceable; calibrated in the vertical direction with fitting down |
| Approvals | CE, RoHS |
| Total error band (linearity, hysteresis, repeatability, thermal hysteresis and thermal errors; excludes zero and span setting accuracy) | ±1.0% of full scale (±1.5% for 5 psi, ±3.0% for 2 psi, ±4.5% for 1 psi) |
| Supply voltage | 9 to 30 V DC |
| Compensated temperature | -4 to 185°F (-20 to 85°C); 32 to 122°F (0 to 50°C) for ranges up to 5 psi |
| Reverse polarity protection | Yes |
| Over-voltage protection | Yes |
| Dimensions | 0.88" (22.3 mm) body diameter 7/8" (22.2 mm) hex |
| Weight | <0.2 lbs (<90 g) |
| Series | PX309 Series |
| Product type | Pressure transducer |
| Pressure type | Gauge |
| Pressure range | 0 to 300 psi (0 to 20.7 bar) |
| Output | 4 to 20 mA |
| Electrical connection | Mini DIN |
| Accuracy (combined linearity, hysteresis and repeatability) | ±0.25% BSL maximum |
| Long-term stability (1 year) | ±0.25% of full scale (typical) |
| Bandwidth | DC to 1 kHz (typical) |
| Response time | <1 millisecond |
| Pressure cycles | 10 million minimum |
| Pressure port | 1/4-18 MNPT |
| Proof (overload) pressure | 2 times rated pressure |
| Burst pressure | 5 times rated pressure |
| Wetted material | 316 or 17-4 PH stainless steel (0 to 500 psi models may contain an HNBR O-ring in the wetted pressure port assembly) |
| Sensing element | Silicon strain gauges molecularly bonded to a stainless steel diaphragm |
| Housing | All 316 stainless steel |
| Minimum insulation resistance | 1 MΩ at 25 V DC (transducer body to any wire) |
| Operating temperature | -40 to 185°F (-40 to 85°C) |
| Shock | 50 g, 11 ms half-sine |
| Vibration | ±20 g |
| Enclosure rating | IP65 |
| Calibration | 5-point NIST-traceable; calibrated in the vertical direction with fitting down |
| Approvals | CE, RoHS |
| Total error band (linearity, hysteresis, repeatability, thermal hysteresis and thermal errors; excludes zero and span setting accuracy) | ±1.0% of full scale (±1.5% for 5 psi, ±3.0% for 2 psi, ±4.5% for 1 psi) |
| Supply voltage | 9 to 30 V DC |
| Compensated temperature | -4 to 185°F (-20 to 85°C); 32 to 122°F (0 to 50°C) for ranges up to 5 psi |
| Reverse polarity protection | Yes |
| Over-voltage protection | Yes |
| Dimensions | 0.88" (22.3 mm) body diameter 7/8" (22.2 mm) hex |
| Weight | <0.2 lbs (<90 g) |
