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This gas analyzer (ZPA) is capable of measuring the concentration of NO,SOz,COz,CO,CH4 and 02 components in sample gas. NO, 802, Co2, CO and CH4 are measured by non-dispersion infrared method (NDIR), while 02 is measured by fuel cell or paramagnetic and zirconia method. Optimum use as an analyzer unit for measurement of combustion exhaust gas from refuse incinerators and boilers, or gas from various industrial furnaces.
Simple status and maintenance messages.
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 analyzer (build-in) or paramagnetic O2 analyzer (build-in) or zirconia O2 analyzer (externally installed TYPE: ZFK7)
Analog output signals:
4 to 20mA DC or 0 to 1V DC, isolated internally from circuit and ground. Output lines are non-isolated each other.; 12 outputs max.
Allowable load 550 for 4 to 20mA DC
Allowable load 100K for 0 to 1V DC
:Refer to Table2 for the channel No. of displayed values and analog output signals.
Analog input signal: For signal input from externally installed O2 analyzer.
Externally installed O2 analyzer should be purchased separately.
Digital output: (Option)
1c contact (24V DC/1A, resistive load) max.15 outputs
Instrument error, calibration error, range identification, auto calibration status, solenoid valve drive for auto calibration, High/Low limit alarm con-
All relay contacts are isolated mutually and from the internal circuit.
Digital input: (Option)
Voltage contact (supply 12-24VDC (15mA Max.)) Max. 9 inputs
Remote range change over, auto calibration remote start, remote hold, average value reset, Isolated from the internal circuit with photocoupler.
Power supply: Voltage rating ; 100V to 240V AC
Allowable range ; 85V to 264V AC
Frequency ; 50Hz/60Hz
Power consumption ; 100VA max.
Ambient temperature -5°C to 45°C (40°C max. when 2 optical system at 2ooV AC power source)
Ambient humidity ; 90% RH max., non-condensing
Ambient temperature ;-20°C to 60°C
Ambient humidity ; 100% RH max., non-condensing
Dimensions (H x W x D): 133 x 483 x 382mm
Mass: Approx. 11 kg max.
Finish color: Front panel; Cool gray (PANTON 1C-F)
Enclosure: Steel casing, for indoor use
Material of gas-contacting parts:
Gas inlet/outlet; SUS304
Sample cell; SUS304,chloroprene rubber Infrared-ray transmitting window; CaF2
Internal piping;Toaron,Teron, Polypropylene Paramagnetic Oz analyzer cell : SUSBIG Fuel cell 02 analyzer cell : ABS resin
Output signal holding:
Output signals are held unchanged during manual and auto calibrations by activation of holding (turning “ON” its setting).
The values held are those just before start calibration mode or setting value.
Usage is selectable.
Indication of instantaneous values will not be held.
Switch ranges: The switch ranges function is available in manual, auto, and remote modes. Only preset switch method is effective.
Manual: Allows range to switch by key operation.
Auto: Automatically switched from first range to second range when the measured value exceeds 90% F8 of first range. Automatically switched from second range to first range when the measured value drops to 80% or less first range.
Remote: Voltage contact input (Option) Allows range to switch via an external signal when remote range switch input is received.
When the contact input terminals for each component are input voltage, the first range is selected, and it is switched to the second range when the terminals are open.
These switch range value are settable between the first range and second range values (low/high range values).
Remote output holding:
Output signal is held at the last value or preset value by voltage input to the remote output holding input terminals. Holding is maintained while the voltage is input to the terminals. Indication of instantaneous values are not held.
Range identification signal:
The present measuring range is identified by a contact position. The contact output terminals close for each component when the first range is selected, and open when the second range is selected.
Auto calibration is carried out periodically at the preset cycle. When a standard gas cylinder for calibration and a solenoid valve for opening/closing the gas flow line are prepared externally by the customer, calibration will be carried out with the solenoid valve drive contacts for zero calibration
and each span calibration turned on/off sequentially at the set auto calibration timing.
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