Single-Beam NDIR Gas Analyzer (ZRE)

Simultaneous and continuous measurement of up to 5 components among NO, SO2, CO, CO2, CH4, and O2in incinerators or boilers

  • Compact design
  • Long-term superior stability
  • Easy-to-see LCD
  • Optional functions include: auto calibration, concentration alarm, remote range-switching, and more.
  • Hardly affected by moisture interference

Easy-to-see LCD

Compact and lightweight (approx. 8 kg)

Continuous measurement of up to 5 components

RS-485 (MODBUS) communication

Automatic calibration eliminates the need for troublesome calibration work

Specifications

Principle NO, SO2, CO, CO2, CH4: Non dispersive infrared sensor (single beam system)
O2: built-in magnetic or galvanic sensor, or external zirconia sensor (ZFK7)
Ranges NO: 0–200 ppm…5000 ppm
SO2: 0–200 ppm…0–10 vol%
CO2: 0–100 ppm…0–100 vol%
CO: 0–200 ppm…0–100 vol%
CH4: 0–500 ppm…0–100 vol%
O2: 0–5 vol%…25 vol%
Up to 2 ranges per component, switchable. Maximum range ratio 1 : 10 (excluding O2)
Repeatability ±0.5% FS
Linearity ±1.0% FS
Zero drift ≤ ±2% FS per week
Span drift ≤ ±2% FS per week
Response time ≤ 60 s (90% response from gas inlet)
Time depends on the number of components and range
Analog output 4–20 mA DC or 0–1 V DC (max. 12 points)
Instantaneous values of each component
Option O2-corrected instantaneous value, O2 corrected average value, O2 average
Display Backlit LCD (Japanese, English, or Chinese) with automatic light off function
Instantaneous value, O2-corrected instantaneous value, O2corrected average value, O2 average, parameter setpoints
Range switching by key operation, automatic, or by external contact input (option)
Contact input (option) Voltage contact input (12–24 V DC, 15 mA max.) up to 9 points
Range switch, auto-calibration start, output signal hold, average reset
Contact output (option) SPDT relay contact (up to 15 points)
Range identification, device error, calibration error, auto-calibration status, high/low limit alarm, pump ON/OFF, solenoid valve drive output for auto calibration
Communication (option) RS-485 (MODBUS), USB type-B connector
Reading/writing parameter values, measured values, device status
Flowmeter Included
Gas inlet/outlet Rc1/4 or NPT 1/4
Structure Steel casing, for indoor use
Operating environment -5°C to 45°C, RH 95% or lower (no condensation)
Mounting 19-inch rack mount, panel mount, or desktop
Power supply voltage 100–240 V AC, 50/60 Hz, 100 VA
Dimensions (H x W x D) in mm 133 x 483 x 418 (19-inch rack mount)
133 x 440 x 418 (panel mount)
149 x 440 x 418 (desktop)
Weight Approx. 8 kg (5-component analyzer)
Certification CE marking

Sample gas conditions

Flow rate 0.5 L/min ±0.2 L/min
Temperature 0–50°C
Pressure ≤ 10 kPa
Dust ≤ 100 μg/Nm3 with particle size ≤ 0.3 μm
Mist Unallowable
Moisture Below the saturation vapor density at room temperature (non condensing)
Below the saturation vapor density at 2°C (non condensing) for NO, SO2, and CO of the range below 200 ppm
Corrosive gas HCl ≤ 1 ppm