Analyser Instrument Company Private Limited

Analyser Instrument Company Private Limited

- Model ZRE - Infrared Gas Analyzer


This gas analyzer (ZRE) is capable of measuring the concentration of NO,SO2,CO2,CO,CH4 and O2 components in sample gas. NO,SO2,CO2,CO and CH4 are measured by non-dispersion infrared method (NDIR), while O2 is measured by fuel cell, or zirconia method. Up to 5 components including O2 can be measured simultaneously. This analyzer is designed with smaller physical dimensions. It is well suited for compact analyzing system designs. In addition maintenance is simplifi ed through adoption of the single-beam system. Optimum use as an analyzer unit of measurement system for combustion exhaust gas from refuse incinerator and boiler, or gas from various industrial furnaces.

Small and light

  • The size is small 133×483×418mm (H×W×D) and light (8kg).
  • But it is capable max. 5 component measurement in one analyzer.

Easy maintenance

  • Because of single-beam system the measurement unit is simple with no need for optical adjustment. Therefore, maintenance is easy.

Easy operation

  • Operation can be carried out smoothly in an interactive way through a large-size LCD.

Abundant functions

  • Various optional functions are available such as auto calibration control, high and low concentration alarm, remote range switch, and range identifi cation signal, etc.

Standard Specifications

Principle of measurement:
NO, SO2, CO2, CO, CH4 ;
Non-dispersion infrared-ray absorption method
Single light source and single beams (single beam system)

O2 ; Fuel cell O2 sensor (built in) or zirconia O2 sensor (externally installed TYPE: ZFK7) (Built in paramagnetic O2 sensor will be next revision.)

  • Max. 5 components measurement including O2.
  • Measuring range ratio max. 1:10
  • Measuring ranges are changeable between the specifi ed minimum and maximum range  Settable one range or two ranges
  • For possible combinations of components and ranges, refer to Table1.

Measured value indication:
Digital indication in 4 digits
(LCD with back light)

  • Instantaneous value of each component
  • Instantaneous value after O2 correction (only in NO, SO2, CO measurement with O2)
  • Average value after O2 correction (only in NO, SO2, CO measurement with O2)
  • O2 average value

Analog output signals:

  • 4 to 20mA DC or 0 to 1V DC,
  • isolated internally from circuit and ground; 12 outputs max.
  • max. load 550Ω for 4 to 20 mA DC
  • min. load 100kΩ for 0 to 1V DC
  • * Refer to Table2 for the channel No. of displayed values and analog output signals.

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