Meriam M1502

Dual Pressure Sensor, Digital Pressure Transmitter

Meriams compact, M1500 Digital Pressure Transmitters are ideal for pressure measurement needs from 10 inches H20 to 3000 PSI Full Scale. Output options include digital (RS-232, RS-485 and USB) or analog (mA or V DC). Choose from differential (dry/dry or wet/wet), gauge, compound or absolute pressure types. Typical NIST traceable digital accuracy is +/-0.025% of F.S. including all effects of linearity, repeatability, hysteresis and temperature from -20º to +50º C (-4º to +122º F). Digital output options for the M1500 deliver accurate pressure measurement to compatible receiving devices. Choose RS-232 single point or RS-485 for networks up to 255 devices. M1500 connections are made with a 7 position terminal block or DB-9 serial port. The USB digital communication option also powers the M1500 via high power USB ports or powered USB hubs. Software is included for initial setup and support. Meriam Serial Protocol (MSP) or Modbus RTU protocol (pending) can be used to send and receive information. Implementation Guides for MSP and Modbus RTU. Output accuracy is typically +/-0.035% of F.S. The user may configure the M1500 for 0 to 5 VDC or 4 to 20 mA output. Two SPST alarm switches are included. Analog units are configured using a USB Mini A Connector and the included Meriam Setup Utility. The utility supports initial configuration, zeroing, recalibration and other functions. For wider pressure range requirements, model M1502 incorporates two pressure sensors. Most combinations of AI or CI type pressure sensors are supported. M1502 is only available with RS-232, RS-485 or USB digital outputs – not available with analog output. A single software command returns both pressure readings. The M1502 reduces purchase price and installation costs when multiple pressure measurements are needed.