IN-SITU
DATA SHEET
ZIRCONIA OXYGEN ANALYZER
FOR HAZARDOUS LOCATION
ZFKE, ZKME
This oxygen analyzer is used to continuously measure
oxygen concentration in noncombustible exhaust gas of
industrial boilers or furnaces, and is ideally suited for com-
bustion management and control.
The analyzer system is comprised of the detector and
converter coupled together as a complete system. Detec-
tor setting configuration includes the flow guide tube and
detector sensor. The flow guide tube is inserted directly
into the gas and directs gas to the sensor for measurement.
The converter (ZKME) is comprised of the signal proces-
sor, input/output and communications, display and system
controls.
Detector (ZFKE)
The converter is equipped with advanced functional-
ity such as performing the sensor diagnostics and sensor
recovery function, so the detector can be used within long
term stability.
FEATURES
Converter (ZKME)
1. Gas sampling device is unnecessary
For quick response, insert the detector directly into the
staek. Gas sampling functions such as a gas aspirator
and a dehumidifier are not required.
SPECIFICATIONS
General Specifications
2. Easy maintenance
Measuring object: Oxygen in noncombustible gas
Measuring method:
Directly insert type zirconia system
Measuring range: 0 to 2 ··· 0 to 50 vol% O2
2 ranges available in 1 vol% O2 steps
The sensor equipped with the detector, has unit construc-
tion, it is easy to replace.
By separating the detector and the flow guide tube, filter
replacement is easy.
3. More reliable than sensor diagnosis, sensor recoverable
function
Repeatability:
Linearity:
Within ±0.5%FS
Within ±2%FS
Depending on the components in the measurement
gas, the characteristics of the sensor might deteriorate.
The equipment includes sensor recovery function elec-
tronically, checking the deterioration status of the sensor
depletion.
Response time:
Within 4 to 7 sec, for 90% (from calibra-
tion gas inlet)
Warmup time:
Analog output:
approx. 10 min
4 to 20mA DC (allowable load resis-
tance less than 500Ω) or 0 to 1V DC
(output resistance more than 100Ω)
Rated voltage;
Therefore, it has high reliability and long-lasting stability.
4. Safe and secure
Power supply:
System detects thermocouple break for heater control on
the sensor side. Safety functions of isolating power sup-
ply to the detector or isoralting power via external contact
input are also.
100 to 120V AC (operating voltage 90
to 132V AC)
200 to 240V AC (operating voltage
190 to 264V AC)
5. Easy operation
Rated frequency; 50/60Hz
Power consumption:
Maximum 240VA (Detector: approx.
The operation and setting for the converter can be per-
formed interactively, and available as English, Japanese
or Chinese for language display.
200VA, Converter: approx. 40VA)
Normal 70VA (Detector: approx. 50VA,
Converter: approx. 20VA
EDS3-139b
Date
Apr. 1, 2011
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