The Martel Electronics 321A-15CV-30A is a precision pressure calibrator designed for demanding industrial applications, particularly gas custody transfer. With dual isolated stainless steel pressure sensors (15 PSI gauge and 30 PSI absolute) and 0.025% F.S. accuracy, this calibrator delivers reliable, temperature-compensated measurements in the field. It also measures RTD temperature and 4-20 mA signals, and provides internal 24V loop power for transmitter testing.
Key Features & Highlights
- Dual isolated pressure sensors: 15 PSI gauge and 30 PSI absolute, 0.025% F.S. accuracy
- Temperature-compensated for accurate field performance
- External pressure module connection supports all BetaPort-P modules (27 ranges)
- Pt100 RTD input for temperature measurement (0.1°C accuracy)
- Measure 4-20 mA input and up to 30 V DC
- Internal 24 V loop power supply for transmitter testing
- Large graphic LCD with backlight, configurable to display up to 3 inputs simultaneously
- Pressure displayed in 17 engineering units plus custom units
- Switch test on Pressure 1, Pressure 2, or external module
- Operating mode layers for simple to complex applications
- Store up to five setups, auto-recall last setup on power-up
- % error and damping functions
- Rugged, compact design; operates on 4 AA batteries
- Includes soft case, test leads, manual, and NIST-traceable certificate
Applications
Ideal for gas flow calibration (custody transfer), this calibrator is also suitable for general pressure calibration, transmitter calibration, and loop checking in industrial plants, laboratories, and field service.
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