7221 8 channel measurement processor

€ - POA


The 7200 series is designed to provide a simple reliable accurate and cost effective means of connecting plant sensors to standard computers for real time monitoring and data acquisition.

The 7221 Measurement processor includes 8 integral Analog Input Channels, individually configurable for Voltage, 4-20mA Current, Thermocouple, Strain, PRT, and Resistance measurement.

By using the units RS485 network port it can become part of a distributed network of up to 1000 channels spanning a distance of up to 1.2 Km.


  • Direct Sensor connection for DC voltages, thermocouples, 4-20mA converters, Strain Gauges, Resistance and PRT’s/RTD’s
  • Integral network interface for distribution over 1.2 Km (4Km with extension unit)
  • 16 bit measurement performance with 0.625µV sensitivity
  • Solid State differential Inputs
  • On board energisation
  • In-built Cold Junction Compensation
  • Serial Port isolated to 500 Vdc
  • Local measurement speed up to 400 readings/sec, 1000/sec over the network
  • Individual channel programming of sensor type and speed
  • Multi Vendor Software Support
  • On board battery backup for storing unit configurations
  • Compact Rugged DIN rail mounted


  • No of Inputs: 8
  • Sensor Types:DC Voltage, Thermocouples, 4-20 mA, Strain, Resistance, PRT/RTD
  • Resolution:16 bits @ 40 rdgs/sec; 14 bits @ 400 rdgs/sec
  • Input Impedance:30M ohms
  • DC voltage ranges :10 V, 1.3V, 150mV, 20mV, Auto
  • Resolutions :320 µV, 40 µV, 5 ?V, 0.625µV
  • Accuracy: +/-0.02%rdg+0.01%range+1bit
  • Resistance thermometers PT100
  • Strain Gauges : Full 1/2 1/4 bridge

NOTE: 4/5/6 Wire PRT Only. Please contact us if 3-wire PRT is required.


Most major SCADA packages support Datascan and an OPC Server is also available. Please contact us for more information.