P290 Pneumatic-to-Current P/I Transducers
Reliable, user-oriented performance
ControlAir's Dahl P290 P/I transducer represents outstanding value in pneumatic to current technology. All solid state circuitry converts standard 3-15, 3-27 or 6-30 psig instrument air into 4-20 or 10-50 mA outputs (4-20 mA only for FM and CSA approval) with uncompromising accuracy and durability. Custom pressure ranges are also available. P290 serves in high-density and panelmounted applications and is available with high density DIN rail adapters, offering space saving flexibility with easy plug-in installation.
Specifications
| Inputs
|
Instrument Air:
|
|
Maximum Input |
3 times full scale without recalibration |
|
Outputs |
2 wire: 4-20 mA with over-current limit , 10-50 mA optional |
|
Allowable Loads |
2-wire: 700 ƒ, standard. Voltage: 5k ƒ minimum |
|
Accuracy |
± 0.15% of span guaranteed; ±0.10% of span typical. Includes combined effects of linearity, hysteresis and |
|
Hysteresis |
Negligible |
|
Repeatability |
±0.10% of span max; ±0.03% of span typical |
|
Resolution |
Infinite |
|
Output Ripple |
None |
|
Protection |
Reverse polarity, transient, over-current |
|
Response Time |
10 m Sec to 99% of step change |
|
Temperature Stability |
Span and Zero: ±0.007% of span per °F maximum deviation from 77°F calibration |
|
Power Supply Stability |
Less than 0.005% of span change in output per volt change at the input terminals |
|
Power Supply |
10 VDC min. to 42 VDC max. at input terminals |
|
RFI/EMI Effect |
Meets or exceeds SAMA PMC 33.1, 1978, 2-abc: 0.1% of span at 10 volts/meter |
|
Operating Temperature Range |
-40°F to 167°F (-40°C to 75°C) |
|
Storage Temperature Range |
-60°F to 185°F (-51°C to 85°C) |
|
Calibration Adjustments |
Non-interactive, multiturn span and zero potentiometers with approximately ±10% of span adjustment range |
|
Loss-of-air Indication |
LED illuminates when input pressure falls below 60% of the live-zero input or, on optional alarm units, LED illuminates during alarm condition |
|
Mounting Position Effect |
None |
|
In-process Output Monitoring |
Voltage: Voltmeter with greater than 10K ƒ input resistance |
|
Connections |
Signal Air: 1/8" NPT female |
Ordering Information
| Part Number | Description | |||
| P290M | P/I Module, 2-wire, 4-20 | |||
| P290DC | Adapter for C type rail | |||
| P290DG | Adapter for G type rail | |||
| P/N | Standard Ranges | P/N | Custom Ranges (psig) Specify range | |
| P11 | 3-15 psig (0.2-1 BAR) | P50 | 0-.72 to 0-6.0 | |
| P12 | 3-27 psig (0.2-1.8 BAR) | P51 | 0-6.0 to 0-18.0 | |
| P13 | 6-30 psig (0.4-2 BAR) | P52 | 0-18.0 to 0-30.0 | |
| P53 | 0-30.0 to 0.50.0 | |||
| Options | P/N | Description | ||
| P31 | CSA general purpose certification |
|||
- Part Number = Model + Input Range + Options
- Examples: P200 + P11 + P21
- P290 + P50 (0-5)