Description
The 311A-30D carries a 30 psi differential internal sensor, identified by the D suffix. The Martel 311A is a handheld pressure calibrator with one isolated stainless steel internal sensor, offered in many ranges and reference types. It also reads a Pt100 RTD, measures 4 to 20 mA with an internal 24 V supply and performs switch tests. A connection for BetaPort-P external modules extends its pressure coverage. Field and shop technicians use it to calibrate pressure transmitters, gauges and switches in process plants.
Key features
- One isolated stainless steel internal pressure sensor
- Temperature-compensated pressure measurement
- External BetaPort-P pressure module connection
- Pt100 RTD input and 4 to 20 mA measurement with 24 V loop supply
- Pressure switch test function
- Custom engineering units and adjustable resolution
Typical applications
- Pressure transmitter and gauge calibration
- Pressure switch testing
- Loop checks in process plants
Specifications
| Brand | Martel Electronics |
|---|---|
| Model | 311A |
| Order code | 311A-30D |
| Product type | Pressure Calibrator |
| Internal range | 30 psi |
| Pressure reference | Differential |
| Internal sensor | One, isolated, stainless steel |
| Pressure accuracy | 0.025 % FS |
| Temperature input | Pt100 RTD |
| mA measurement | 4 to 20 mA with internal 24 V supply |
| External modules | BetaPort-P |
| Power | AA batteries |
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