The Martel Electronics 311A-500CV is a high-performance pressure calibrator designed for demanding industrial environments. With a 500 PSI compound range and 0.025% F.S. accuracy, this instrument delivers precise pressure measurement and calibration for a wide variety of applications. The ‘A’ version enhances the original with a rugged, power-tool-tough case, custom engineering units, user-adjustable resolution, and improved stability.
Key Features & Highlights
- Pressure measurement up to 500 PSI compound with 0.025% F.S. accuracy
- Temperature-compensated for accurate field use
- External pressure module connection supports all BetaPort-P modules (27 ranges) for expanded capability
- Pt100 RTD input for temperature measurement accurate to 0.1°C (0.2°F)
- Measure 4-20 mA signals and internal 24V loop power supply for transmitter testing
- Measure up to 30V DC
- 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 pressure module
- Operating mode layers support simple to complex applications
- Store up to five frequently used setups; last setup auto-recalled on power-up
- % error and damping functions
- Compact, rugged design operates on four AA batteries
- Includes soft case, AA batteries, manual, NIST-traceable certificate, and test leads
Applications
Ideal for gas flow calibration (custody transfer), pressure transmitter calibration, and general pressure measurement in field or shop environments. The multi-function capability makes it suitable for calibrating pressure, temperature, and current loops in process industries.
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