NDIR TYPE INFRARED GAS ANALYZER
(3-COMPONENT ANALYZER)
ZKJ7
DATA SHEET
This product is the replacement of our gas analyzer <model: ZRG>
This gas analyzer (ZKJ7) is capable of measuring the concentrations of NO, SO2, CO2, CO, CH4 and O2 components
in sample gas.
NO, SO2, CO2, CO, CH4 are measured by non-dispersion
infrared method (NDIR), while O2 is measured by externalmount type zirconia method sensor. A maximum of three
components including O2 are simultaneously measurable.
The mass flow type twin detector of high sensitivity and
reliability adopted in the infrared ray method detection
block makes the measurement hardly affected by interfering components.
In addition, a microprocessor is built in and a large-size
liquid crystal display is equipped for easier operation,
higher accuracy and more functions.
Optimum as an analyzer unit of gas measurement system
for combustion exhaust gas from refuse incinerator and
boiler, or gas from different industrial furnaces.
Combination of this product and model sampling system
(ZSU) is satisfied authentication test by measurement act.
FEATURES
1.M e a s u r e t h r e e c o m p o n e n t s i n c l u d i n g O 2
simultaneously and continuously
Simultaneously and continuously measures up to three
components out of NO, SO2, CO2, CO, CH4, plus O2, or
up to totally three components.
2. Hardly affected by interference by other gases
The mass flow type twin detector of high sensitivity
and reliability adopted makes the measurement hardly
affected by interfering components of other gas,
ensuring a stable operation.
3. Equipped with abundant functions
O2 conversion, average value computation, automatic
calibration, one touch calibration, upper/lower limit
alarm, remote measurement range changeover, range
identification signal output, etc. incorporated can
configure applications to match particular uses.
4. Easy-to-see large LCD unit
The large LCD unit adopted allows observing easily
the indication of all measured components and
computation values.
The interactive operation facilitates setting.
5. Maximum range ratio is 1:25
Measuring ranges are changeable.
6. Drift +/-1% FS/week (more than 0 to 200ppm range)
SPECIFICATIONS
Standard Specifications
Principle of measurement:
NO, SO2, CO2, CO, CH4;
Non-dispersion infrared-ray absorption
method
Single light source and double beams
(double-beam system)
O2 ; Exclusive zirconia O2 sensor (externally
installed). Model: ZFK7
Measurable gas components and measuring range:
NO
SO2
CO2
CO
CH4
O2
(External Zirconia)
Minimum range
0 – 100ppm
0 – 100ppm
0 – 100ppm
0 – 100ppm
0 – 200ppm
Maximam range
0 – 5000ppm
0 – 10vol%
0 – 100vol%
0 – 100vol%
0 – 100vol%
0 – 10vol%
0 – 25vol%
• Max. 3 components measurement including O2.
• Measuring range ratio ≤ 1:5 (O2 sensor)
≤ 1:25
(except for O2 sensor)
• Measuring ranges are changeable between
the specified minimum and maximum range
Settable one range or two ranges
*For measurable components and possible combinations
of measuring ranges, refer to Tables 1-(1) to (3).
EDS3-141a
Date
Nov. 21, 2011
ZKJ7
Measured value indication:
Digital indication in 4 digits
(LCD with back light)
• Instantaneous value of each component
• Instantaneous value after O2 conversion
(only in NO, SO2, CO sensor with O2
sensor)
• Average value after O2 conversion
(only in NO, SO2, CO sensor with O2
sensor)
Analog output signals:
4 to 20mA DC or 0 to 1V DC,
non-isolated output ; 7 points max.
Analog output corresponds to measured value indication in 1:1.
max.load550Ω. for 4 to 20 mA DC
min.load 100kΩ. for 0 to 1V DC
*Refer to Table 2, for the channel No.
of displayed values and analog output
signals.
Analog input signal:
For signal input from externally installed
O2 sensor.
Signal requirement;
(1)Signal from Fuji’s Zirconia O2 sensor (TYPE: ZFK7)
(2)0 to 1V DC from an O2 sensor
Input section is not isolated.
(Depend on O 2 input signal, measured
concentration indication and O 2 conversion.)
Relay contact output:
1a contact (250V AC/2A, resistive load)
Instrument error, calibration error,
range identification, auto calibration
status, pump ON/OFF.
solenoid valve drive signal for auto
calibration, auto calibration end.
1c contact (250V AC/2A, resistive load
selectable 6 outputs)
High/Low limit alarm contact output.
* All relay contacts are isolated mutually and from the internal circuit.
Contact input: No-voltage contact (ON/0V, OFF/5V
DC, 5mA flowing at ON)
* For ZRG (ON/5V, OFF/0V)
Remote range switch, auto calibration remote start, remote holding,
average value reset.
Isolated from the internal circuit with
photocoupler. Contact inputs are not
isolated from one another.
Power supply: Voltage rating ; 100V to 240V AC
Allowable range; 85V to 264V AC
Frequency
; 50Hz/60Hz
Power consumption; 250VA max.
Operating conditions:
Ambient temperature;-5°C to 45°C
Ambient humidity ;90% RH max.,
non-condensing
Storage conditions:
Ambient temperature; -20°C to 60°C
Ambient humidity ;95% RH max.,
non-condensing
Dimensions (H x W x D):
Analyzer main unit;
835 x 218 x 202mm
Mass:
Approx. 16 kg
Finish color: Front panel; Off-white (Munsell 10Y7.5/0.5
or equivalent)
2
Enclosure: Steel casing, for indoor use
Material of gas-contacting parts:
Gas inlet/outlet; Teflon
Sample cell; SUS304,chloroprene rubber
Infrared-ray transmitting window; CaF 2
O2 sensor sample cell : SUS316
Internal piping; Toaron, Teflon
Gas inlet/outlet: Rc1/4 or ø6 hose end
Purge gas flow rate:1L/min ( when required)
Standard Functions
Output signal holding:
Output signals are held during manual
and auto calibrations by activation of
holding (turning “ON” its setting).
The values to be held are the ones just
before start calibration mode or setting
value.
It is selectable.
Indication of instantaneous values will
not be held.
Remote output holding:
Output signal is held at the latest value
or setting value by short-circuiting the
remote output holding input terminals.
Holding is maintained while the terminals are short-circuited. Indication of
instantaneous values will not be held.
Switch ranges :
The switch ranges is available in manual, auto, and remote modes. Only preset switch method is effective.
Manual:
Allows range to switch by key operation.
Auto:
Allows range to switch from low to high
range when 90%FS or more is available
in the low range.
Allows range to switch from high to
low range when 80%FS or less is available in the low range.
Remote:
No-voltage contact input (for measurable components)
Allows range to switch via an external
signal when remote range switch input
is received.
When the contact input terminals for
each component are short-circuited,
the first range is selected, and it is
switched to the second range when the
terminals are open.
Range identification signal:
The present measuring range is identified by a contact signal.
The contact output terminals for each
component are short-circuited when
the first range is selected, and when
the second range is selected, the terminals are open.
Auto calibration:
Auto calibration is carried out periodically at the preset cycle.
W h e n a s t a n d a r d g a s c y l i n d e r fo r
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.
Auto calibration cycle setting:
Auto calibration cycle is set.
Setting is variable within 1 to 99 hours (in
increments of 1 hour) or 1 to 40 days (in
increments of 1 day).
Gas flow time setting:
The time for flowing each calibration
gas in auto calibration is set.
Settable within 60 to 900 seconds (in
increments of 1 second)
Auto calibration remote start:
Auto calibration is carried out only once
according to an external input signal.
Calibration sequence is settable in the
same way as the general auto calibration.
Auto calibration is started by opening
the auto calibration remote start input
terminals after short-circuiting for 1.5
seconds or longer.
Auto zero calibration:
Auto zero calibration is carried out periodically at the preset cycle.
This cycle is independent on “Auto calibradion” cycle.
When zero calibration gas and solenoid
valve for opening/closing the calibration
gas flow line are prepared externally
by the customer, zero calibration will
be carried out with the solenoid valve
drive contact for zero calibration turned
on/off at the set auto zero calibration
timing.
Auto zero calibration cycle setting:
Auto zero calibration cycle is set.
Setting is variable within 1 to 99
hours (in increments of 1 hour) or
Setting is variable within 1 to 40 days
(in increments of 1 day)
Gas flow time setting:
The timing for flowing zero gas in
auto zero calibration is set.
Settable 60 to 900 seconds (in increments of 1 second)
High/Low limit alarm:
Alarm contact output turns on when
measurement value reach to the preset
high or low limit alarm value.
Contacts close when the channel value
of each channel becomes larger than
the high alarm limit value or smaller
than the low alarm limit value.
Instrument error contact output:
Contacts close at occurrence of analyzer error No. 1, 3 or 10.
Calibration error contact output:
Contacts close at occurrence of manual
or auto calibration error (any of errors
No. 4 to 9).
Auto calibration status contact outputs: Contacts close during auto calibration.
Pump ON/OFF contact output:
During measurement, this contact
close. While calibration gas is flowing,
this contact open. This contact is connected in power supply of pump, and
stop the sample gas while calibration
gas flowing.
Average value reset:
Ave r a g e va l u e a ft e r O 2 c o nve r s i o n
is started under preset condition by
opening the average value reset input
terminals after short-circuiting for 1.5
seconds or longer.
Reset is carried out by short-circuiting.
Restart is carried out by opening.
3
ZKJ7
Auto calibration interlocking function:
When these two products are lined
up and installed, output the auto calibration synchronized signal to second
product.
Contact output during auto calibration:
While auto calibration is carried out,
this contact is closed.
Auto calibration end contact output:
Cont act is closed for 1.5 seconds
after finishing to flow the gas of auto
calibration.
Optional Functions
O2 conversion: Conversion of measured NO, SO 2 and
CO gas concentrations into values at
standard O2 concentration
Conversion formula: C =
21–On
× Cs
21–Os
C : Sample gas concentration after O 2
conversion
Cs: Measured concentration of sample
gas
Os: Measured O2 concentration
(Limit settable, 1 to 20%O 2)
On: Standard O 2 concentration (value
changeable by setting; 0 to 19%O2)
Average value after O2 conversion :
The result of O 2 conversion or instantaneous O 2 value can be outputted as
an average value in the preset period of
time.
Used for averaging is the moving average method in which sampling is carried out at intervals of 30 seconds.
(Output is updated every 30 seconds.
It is the average value in the determined period of time just before the
latest updating.)
Averaging time is settable within 1 to
59 minutes (in increments of 1 minute) or 1 to 4 hours (in increments of 1
hour).
Communication function:
RS-232C (9pins D-sub)
Half-duplex bit serial
Start-stop synchronization
ModbusTM protcol
Contents: Read/Wright parameters
Read measurement concentration and instrument status
Remark: When connecting via RS-485
interface, a RS-232C
RS485 converter should be used.
4
Performance
: ±0.5% of full scale
: ±1% of full scale
: ±1% of full scale/week
(±2% of full scale/week; range be
tween 0 to 100ppm and 0 to 200ppm)
Span drift
: ±2% of full scale/week
Response time :
(for 90% FS response)
15 sec electrical response
Within 60 seconds including replacement time of sampling gas (when gas
flow rate is 0.5L/min)
Gas replacement time depends on the
number of measuring components and
measuring range
Repeatability
Linearity
Zero drift
Standard Requirements for Sample Gas
: 0.5L / min ±0.2L / min
: 0 to 50°C
: 10 kPa or less (Gas outlet side should
be open to the atmospheric air.)
Dust
: 100µg/Nm 3 or less in particle size of
1µm or less
Mist
: Unallowable
Moisture
: Below a level where saturation occurs
at 2°C (condensation unallowable).
Corrosive component:
1 ppm or less
Standard gas for calibration:
Zero gas ;Dry N2
Span gas ;E a ch s a m p l e g a s h av i n g
concentration 90 to 100%
of its measuring component
range (recommended).
Gas beyond concentration
100%FS is unusable.
In case a zirconia O 2 analyzer is installed externally and calibration is carried out on the same calibration gas
line:
Zero gas ;Dry air or atmospheric air
(provided without CO 2 sensor)
Span gas ; Except O 2 measurement,
e a ch s a m p l e g a s h av i n g
concentration 90 to 100%
of its measuring range. For
O 2 sensor, O 2 gas of 1 to
2vol%.
Flow rate
Temperature
Pressure
Installation Requirements
• Indoor use. (Select a place where the equipment does
not receive direct sunshine, draft/rain or radiation from
hot substances. If such a place cannot be found, a roof
or cover should be prepared for protection.)
• Avoide a place where receives heavy vibration
• Select a place where atmospheric air is clean
EC Directive Compliance
The product conforms to requirement of the Low Voltage
Directive and EMC directive.
It conforms to following standards for product safety and
electromagnetic compatibility ;
EN61010-1 : 2001, EN62311 : 2008
Safet y requirements for electrical
equipment for measurement, control
and laboratory use.
EN61326-1~2006
EN61326-2-3 : 2006, EN61000-3-2 : 2006, A1: 2009,
A2: 2009,
EN61000-3-3 : 2008
Electrical equipment for measurement,
control and laboratory use – EMC requirements.
*The product mounted in a steel enclosure conforms
to the requirements of EMC directive.
ZRG
ZKJ7 differences
ZRG
Contact input
DC5V
ZKJ7
No-voltage contact
Zirconia O2 analyzer ZFK3, 4
ZFK7
Average value
Calculation is
always carried
out even during
holding.
Calculation is
suspended during
holding
Calibration error
contact
Auto calibration
status error
Calibration status
error
(Auto/manual)
5
ZKJ7
Principle diagram of NDIR type measurement (For NO, SO2, CO2, CO)
Motor
Distribution cell
(interference filter)
Trimmer
Interference compensating
detector
Reference cell
Rotary sector
Sample cell
Sample gas
inlet
Sample gas
outlet
Gain changeover
Infrared (single)
light source
AC amplifier
Sector
sync. signal
O2 sensor
(option)
A/D
CPU
Output
0 to 1V or
4 to 20mA DC
6
Indicator
Indication
D/A
Operating keys
External input / Contact output
RAM
ROM
Example configuration of gas sampling system
The following illustrates a typical system configuration for five component gas measurement for monitoring combustion
exhaust gas from boiler, refuse incinerator, etc.
Contact FUJI ELECTRIC for system configuration matching the particular use or further information.
In the case infrared gas analyzer (Model: ZRG) is replaced, Ziruconia O 2 sensor should also be replaced.
(1) Gas extractor
ZKJ7 Unit
Gas inlet tube
(2) Mist filter
(7) Membrane filter
(8) Flowmeter
(4) Gas aspirator
15° or larger
(11) NO2/NO
converter
for NOx
measurement
(5)
Electronic
gas cooler
(7) Membrane
filter
Infrared gas
analyzer main
unit
NO, SO2
(3) Drain trap
(6) Solenoid valve
ZERO
NO
SO2
O2
Pressure
reducing valve
Gas outlet
N2
or
Air
NO
/N2
O2
/N2
(10) Zirconia
O2 sensor
(ZFK7)
(9) Standard gas
Drain
Functions of Individual Components
(1)Gas extractor:Gas extractor with a heating type
stainless steel filter of standard mesh
40µm
(2)Mist filter:
For separation of drain and removal of
dust and mist
(3)Safety drain trap:
Prevention of drain from being sucked
and composite operation of constantpressure bubbler
(4)Gas aspirator:For aspiration of sample gas (sample
gas flow rate approx. 2L/min)
(5)Electronic gas cooler:
Dries the moisture in sample gas to a
dew point of approx. 3°C.
(6)Solenoid valve:Used for introducing calibration gas.
(7)Membrane filter:
PTFE filter used to eliminate fine dust
particles and permit monitoring of dust
adhering condition on the front panel of
the gas analyzer.
SO2
/N2
O2
(8)Flowmeter: Adjusts and monitors the flow rate of sample gas.
(9)Standard gas: Reference gas used for calibrating zero
and span of the analyzer.
(10)Zirconia O2 sensor:
External zirconia oxygen sensor used
for measuring the oxygen concentration
(0 to 25%) in sample gas.
In the case ZFK3-4 is used, ZFK7
should also be replaced.
(11)Converter: Added to NOx analyzer.
A special catalyst material for efficient
conversion of NO2 gas to NO is used.
*(Note)
For each gas sampling device, refer to the separate Data Sheet for each gas sampling device.
7
ZKJ7
CODE SYMBOLS
Description
Digit
4 <Custom specifications>
Replecement of ZRG type
5 <Measurable component (NO, SO2, CO2, CO, CH4)>
1st component
2nd component
NO
SO2
CO2
CO
CH4
NO
SO2
CO2
CO
Others
6 <Measurable component (O2)>
None
External zirconia type O2 sensor (ZFK7 type)
External O2 analyzer
without external indication
(input the signal for O2 conversion externally)
7 <Gas inlet/outlet>
Rc1/4 (with purging inlet)
Teflon φ6（none purging inlet)
8 <Revision code>
9 10 <Indication>
In Japanese
In English
11 <Measuring range> 1st component.1st range
0-100ppm
0-200ppm
0-250ppm
0-500ppm
0-1000ppm
0-2000ppm
0-5000ppm
0-1%
0-2%
0-5%
0-10%
0-20%
0-50%
0-100%
Others
12 <Measuring range> 1st component.2nd range
None
0-200ppm
0-250ppm
0-500ppm
0-1000ppm
0-2000ppm
0-5000ppm
0-1%
0-2%
0-5%
0-10%
0-20%
0-50%
0-100%
Others
8
note
1 2 3 4 5 6 7 8
9 10 11 12 13
ZKJ 7
Y
4
YYYY
7
note 1
note 2, 9
P
A
D
B
E
F
G
Z
Y
A
B
D
1
4
4
note 3
note 3
14 15 16 17 18 19 20
Y
J
E
B
C
D
E
F
G
H
J
K
L
M
N
P
R
Z
Y
C
D
E
F
G
H
J
K
L
M
N
P
R
Z
21 22 23
Digit No.
of code
Digit
Description
13 <Measuring range> 2nd component.1st range
None
0-100ppm
0-200ppm
0-250ppm
0-500ppm
0-1000ppm
0-2000ppm
0-5000ppm
0-1%
0-2%
0-5%
0-10%
0-20%
0-50%
0-100%
Others
14 <Measuring range> 2nd component.2nd range
None
0-200ppm
0-250ppm
0-500ppm
0-1000ppm
0-2000ppm
0-5000ppm
0-1%
0-2%
0-5%
0-10%
0-20%
0-50%
0-100%
Others
15 16
17 18
19 <O2 sensor range>
20 Minimun range
Maximum range
None
None
0-10%
0-25%
0-25%
None
Others
21 <Output>
4 to 20mA DC
0 to 1V DC
4 to 20mA DC + communication function
0 to 1V DC + communication function
22 <O2 conversion>
None
With O2 conversion output
23 <Ajustment>
For combustion exhaust gas
Others
note
note 3
note 3
1 2 3 4 5 6 7 8
9 10 11 12 13
ZKJ 7
YJ
4
14 15 16 17 18 19 20
21 22 23
YYYY
Digit No.
of code
Y
B
C
D
E
F
G
H
J
K
L
M
N
P
R
Z
Y
C
D
E
F
G
H
J
K
L
M
N
P
R
Z
YY
YY
note 4
note 5, 9
note 6
note 7
note 8
YY
MV
VY
ZZ
A
B
C
D
Y
A
B
Z
Note 1 a) when “B” is specified at the 6th digit, O2 sensor signal should be set as 0-1VDC linear corresponding to full scale.
b) External zirconia O2 sensor and external O2 analyzer are not included in the scope of supply.
Note 2 When two products are lined up and installed, please refer to the corresponding table for measured value to specify
the digit for second product. (Please also refer to note 9)
Note 3 Please refer to the appendix, for possible combination of measuring components and range in the data sheet.
Note 4 When "Y", "D" is specified at the 6th digit, Only "YY" should be selected.
Note 5 When two products are lined up and installed, Only "VY" should be selected for both products. (Please also refer to note 9)
Note 6 Only measuring value of NO, SO2, CO are calculated as O2 calculation, O2 converted average value are outputted at the
same time.
Note 7 When "Y" is specified at the 6th digit, Only "Y" should be selected.
Note 8 When "Z" is specified at the 23rd digit, gas composition table of actual measured gas has to be sent to Fuji with your
purchase order.
9
ZKJ7
Note 9 Precaution to observe when performing installation of two analyzers with external O2 analyzer
• When two ZKJ7 are lined up side by side and installed with external O2 analyzer, Be sure to observe connection of external O2
analyzer shown following diagram on the right side. (with converted value/converted average value)
In this case O2 indication can not be conducted with second ZKJ7 (due to limitation of measurement )
Please refer to "Connecting method/analog output component" for connection to the terminal.
[Composition for ZRG]
[Composition for ZKJ7]
ZAG
ZKG1, 2
ZKG1, 2
ZFK7
ZFK3, 4
ZRG
(First)
ZRG
(Second)
Replace
ZKJ7
(First)
ZKJ7
(Second)
*First analyzer:
This analyzer is connected to O2 signal directly and indicate O2 indication.
Second analyzer: This analyzer is connected to O2 instantaneous value from first analyzer
and could not indicate O2 indication.
• O2 range is fixed 0-25%.
• With these connection component for second analyzer should be NO sensor, SO2 sensor or NO/SO2 sensor.
Please refer to the "correspondence table for measured value" "Code symbols" for details.
• When ZRG is replaced, two analyzers should be replaced at the same time.
10
Table 1. Measurable component and range – availability check table –
(*) Range code shows settable combination of the maximum range rate.
(1) Single component analyzer (NO, SO2, CO2, CO, CH4)
☆ : NO Measuring range
○ : CO Measuring range
2st range
1st range
B 0 ~ 100ppm
C 0 ~ 200ppm
D 0 ~ 250ppm
E 0 ~ 500ppm
F 0 ~ 1000ppm
G 0 ~ 2000ppm
H 0 ~ 5000ppm
J 0 ~ 1%
K 0 ~ 2%
L 0 ~ 5%
M 0 ~ 10%
N 0 ~ 20%
P 0 ~ 50%
R 0 ~ 100%
C
0~
200ppm
☆□◎○
□ : SO2 Measuring range
△ : CH4 Measuring range
D
0~
250ppm
☆□◎○
☆□◎○△
E
0~
500ppm
☆□◎○
☆□◎○△
☆□◎○△
F
0~
1000ppm
☆□◎○
☆□◎○△
☆□◎○△
☆□◎○△
G
0~
2000ppm
☆□◎○
☆□◎○△
☆□◎○△
☆□◎○△
☆□◎○△
◎ : CO2 Measuring range
H
0~
5000ppm
J
K
L
M
N
P
R
0 ~ 1%
0 ~ 2%
0 ~ 5%
0 ~ 10%
0 ~ 20%
0 ~ 50%
0 ~ 100%
☆□◎○△
☆□◎○△
☆□◎○△ □◎○△
☆□◎○△ □◎○△ □◎○△
☆□◎○△ □◎○△ □◎○△ □◎○△
□◎○△ □◎○△ □◎○△ □◎○△
□◎○△ □◎○△ □◎○△ ◎○△
□◎○△ □◎○△ ◎○△ ◎○△
□◎○△ ◎○△ ◎○△ ◎○△
◎○△ ◎○△ ◎○△
◎○△ ◎○△
◎○△
(2) Double-component analyzer (NO/SO2)
○ : Double-component analyzer Measuring range (1st range)
SO2
NO
B
C
D
E
F
G
0 ~ 100ppm
0 ~ 200ppm
0 ~ 250ppm
0 ~ 500ppm
0 ~ 1000ppm
0 ~ 2000ppm
B
0~
100ppm
○
○
○
○
○
○
C
0~
200ppm
○
○
○
○
○
○
D
0~
250ppm
○
○
○
○
○
○
E
0~
500ppm
○
○
○
○
○
○
F
0~
1000ppm
○
○
○
○
○
○
G
0~
2000ppm
○
○
○
○
○
○
H
0~
5000ppm
○
○
○
○
○
○
* 2nd range: Max. NO (0-200ppm), SO2 (0-5000ppm), Selectable range up to 25 times of 1st. range
(3) Double-component analyzer (CO2/CO)
①～⑤ : Double-component analyzer Measuring range (1st range)
CO
CO2
B
C
D
E
F
G
H
J
K
L
M
N
P
R
B
0~
100ppm
0 ~ 100ppm
①
0 ~ 200ppm
①
0 ~ 250ppm
①
0 ~ 500ppm
①
0 ~ 1000ppm
①
0 ~ 2000ppm
①
0 ~ 5000ppm
①
0 ~ 1%
0 ~ 2%
0 ~ 5%
0 ~ 10%
②
0 ~ 20%
②
0 ~ 50%
0 ~ 100%
C
0~
200ppm
①
①
①
①
①
①
①
D
0~
250ppm
①
①
①
①
①
①
①
②
②
②
②
E
0~
500ppm
①
①
①
①
①
①
①
②
②
F
G
H
0~
0~
0~
1000ppm 2000ppm 5000ppm
①
①
①
①
①
①
①
①
①
①
①
①
①
①
①
①
①
①
①
①
①
②
②
②
②
J
K
L
M
N
0 ~ 1%
0 ~ 2%
0 ~ 5%
0 ~ 10%
0 ~ 20%
③
③
③
③
③
④
④
④
③
④
④
④
⑤
⑤
⑤
⑤
⑤
⑤
⑤
⑤
②
②
P
R
0 ~ 50% 0 ~ 100%
⑤
⑤
⑤
⑤
⑤
⑤
⑤
⑤
* Max. measuring range as 2nd range is following. Selectable range up to 25times of 1st range.
① : CO (0-5000ppm), CO2 (0-5000ppm)
② : CO (0-5000ppm), CO2 (0-20%)
③ : CO (0-50%), CO2 (0-20%)
④ : Selectable range up to 25 times.
⑤ : CO (0-100%), CO2 (0-100%)
11
ZKJ7
OUTLINE DIAGRAM (Unit: mm)
<Analyzer main unit>
<Upper>
<Mounting size>
Sample gas inlet
Rc1/4 or φ6
PURGE
Sample gas outlet
Rc1/4 or φ6
INLET1
(It is the same as
the ZRG type)
OUTLET1
813
Purge gas inlet
Rc1/4 or φ6
Communication
connector
AUTO CAL
OPTION2
OPTION1
A/O
140
A/O Terminal
OPTION2 Terminal
AUTO CAL terminal
3 - φ12
M10 screw is needed formounting
to main unit
OPTION1 Terminal
<Side>
11.5
φ12
(12)
<Front>
ZKJ
GAS ANALYZER
Operation panel
POWER
MODE ZERO SPAN
ENTER
(597.1)
ESC
835
813
(787)
Power supply (M4 screw)
E
Power supply
AC100V to AC240V
50/60Hz
Power
Terminal
ON
F
Power switch
USE
PE
FUSE
250V T 3.15A
N
L
AC
V
POWER SOURCE
Fuse
140
218
12
3.2
12
43.2
202.2
EXTERNAL CONNECTION DIAGRAM
A/O
1st
component
2nd
component
0 to 1V or
4 to 20mA
DC (instantaneous value)
0 to 1V or
4 to 20mA
DC (O2 converted
average value)
+
1
11
+
-
2
12
-
+
3
13
+
-
4
14
-
0 to 1V or
4 to 20mA
DC (instantaneous value)
+
5
15
+
-
6
16
-
0 to 1V or
4 to 20mA
DC (O2 converted
average value)
+
7
17
+
-
8
18
-
9
O2 sensor input
O2 Output
0 to 1V or
4 to 20mA
DC (instantaneous value)
1st component
O2 converted
value output ***)
0 to 1V DC or
4 to 20mA DC
2nd component
O2 converted
value output **)
0 to 1V DC or
4 to 20mA DC
19
FAULT
10
1st component
Upper limit alarm
contact output
(option)
2nd component
Upper limit alarm
contact output
(option)
O2
Upper limit alarm
contact output
(option)
Unassigned (*)
20
OPTION 1
Remote output
holding input
①-④
+
+
1st component
Remote range
input
1
11
2
12
3
13
+
+
R1
Auto calibration
end contact
output ⑤-⑧
1st component
Range identification contact
output
+
O2
Remote range
input
R1
4
14
5
15
6
16
7
17
8
18
9
19
10
20
2nd component
Range identification
contact output
(option)
O2
Range identification
contact output
(M3.5 screw)
OPTION 2
AUTO CAL
11
2
12
3
13
4
14
5
15
6
16
7
17
8
18
9
19
10
20
1st component
Lower limit alarm
contact output
(option)
Auto calibration
contact output
Zero gas
contact output
2nd component
Lower limit alarm
contact output
(option)
O2
Lower limit alarm
contact output
(option)
Unassigned (*)
Ground
Power supply
Span gas-1
contact output
Span gas-2
contact output
2
12
3
13
4
14
5
15
6
16
7
17
8
18
9
19
10
20
Calibration error
contact output
+
Auto calibration
remote start input
-
Unassigned (*)
Span gas-3
contact output
Unassigned (*)
(M3.5 screw)
Connector
<CN2>
For serial communicetion
1
2
3
4
*)
Do not use the terminal for relay.
**) When two analyzers are lined up
and installed with O2 converted
value and converted average value,
by First analyzer O2 instantaneous value
(0-1V DC: 0-25% range equivalent) is outputted.
***) When two analyzers are lined up
and installed and first analyzer is used
as CO2/CO sensor, CO converted value
is outputted to 1st component O2 converted
value output.
11
Pump ON/OFF contact
(M3.5 screw)
Power supply (M4 screw)
1
2nd component
Remote range
input
Contact output during
auto calibration ⑮-⑱
(M3.5 screw)
1
Average value reset
input ⑪-⑭
5
6
7
8
9
13
ZKJ7
Connecting method/analog output component
Measurment of NO/SO2/CO/O2 sensor [Example connection]
(with converted value and converted average value)
ZKG1,2
ZFK7
ZKJ7 (First)
A/O terminal
CO
Instantaneous
value
CO
Converted
average value
unassigned
unassigned
14
ZKJ7 (Second)
A/O terminal
+
①
⑪
+
–
②
⑫
–
+
③
⑬
+
–
④
⑭
–
+
⑤
⑮
+
–
⑥
⑯
–
+
⑦
⑰
+
⑧
⑱
–
⑨
⑩
–
NO
Instantaneous
value
O2
Instantaneous
value
NO
Converted
average value
CO
converted
value
SO2
Instantaneous
value
+
①
⑪
+
–
②
⑫
–
+
③
⑬
+
–
④
⑭
–
+
⑤
⑮
+
–
⑥
⑯
–
+
⑦
⑰
+
⑧
⑱
–
⑲
⑨
⑲
⑳
⑩
⑳
O2Instantaneous SO2
value
Converted
(0-1V DC only)
average value
–
unassigned
NO
converted
value
SO2
converted
value
Measurment of NO/SO2/CO2CO/O2 sensor [Example connection]
(with converted value and converted average value)
ZKG1,2
ZFK7
ZKJ7 (First)
A/O terminal
CO2
Instantaneous
value
unassigned
CO
Instantaneous
value
CO
Converted
average value
ZKJ7 (Second)
A/O terminal
+
①
⑪
+
–
②
⑫
–
+
③
⑬
+
–
④
⑭
–
+
⑤
⑮
+
–
⑥
⑯
–
+
⑦
⑰
+
⑧
⑱
–
⑨
⑩
–
NO
Instantaneous
value
O2
Instantaneous
value
NO
Converted
average value
CO
converted
value
SO2
Instantaneous
value
+
①
⑪
+
–
②
⑫
–
+
③
⑬
+
–
④
⑭
–
+
⑤
⑮
+
–
⑥
⑯
–
+
⑦
⑰
+
⑧
⑱
–
⑲
⑨
⑲
⑳
⑩
⑳
O2Instantaneous SO2
value
Converted
(0-1V DC only)
average value
–
unassigned
NO
converted
value
SO2
converted
value
15
ZKJ7
Table 2. Correspondence between measurement channels and measured value
The following table gives measurement channels and their contents according to the code symbols.
1. In case of using only one analyzer.
Code symbol
5th digit 6th digit 22nd digit
Y
Y
P
Y
Y
A
Y
Y
D
Y
Y
B
Y
Y
E
Y
Y
F
Y
Y
G
A, B
Y
P
A, B
Y
A
A, B
Y
D
A, B
Y
B
A, B
Y
E
A, B
Y
F
A, B
Y
G
A, B
A
P
A, B
A
A
A, B
A
B
A, B
A
F
G
16
A, B
A
Contents
Ch1: NO
Ch1: SO2
Ch1: CO2
Ch1: CO
Ch1: CH4
Ch1: NO, Ch2: SO2
Ch1: CO2, Ch2: CO
Ch1: NO, Ch2: O2
Ch1: SO2, Ch2: O2
Ch1: CO2, Ch2: O2
Ch1: CO, Ch2: O2
Ch1: CH4, Ch2: O2
Ch1: NO, Ch2: SO2, Ch3: O2
Ch1: CO2, Ch2: CO, Ch3: O2
Ch1: NO, Ch2: O2, Ch3: Converted NO, Ch4: Converted NO average
Ch1: SO2, Ch2: O2, Ch3: Converted SO2, Ch4: Converted SO2 average
Ch1: CO, Ch2: O2, Ch3: Converted CO, Ch4: Converted CO average
Ch1: NO, Ch2: SO2, Ch3: O2, Ch4: Converted NO, Ch5: Converted SO2,
Ch6: Converted NO average, Ch7: Converted SO2 average
Ch1: CO2, Ch2: CO, Ch3: O2, Ch4: Converted CO, Ch5: Converted CO average
2. In case of using two analyzers installed.
1st analyzer
Code symbol
5th digit 6th digit
B
Y
D
Y
E
Y
G
Y
B
Y
D
Y
E
Y
G
Y
B
Y
D
Y
E
Y
G
Y
B
Y
D
Y
E
Y
G
Y
B
Y
D
Y
E
Y
G
Y
B
Y
D
Y
E
Y
G
Y
D
A, B
22nd digit
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Ch1: CO
Ch1: CO2
Ch1: CH4
Ch1: CO2, Ch2: CO
Ch1: CO
Ch1: CO2
Ch1: CH4
Ch1: CO2, Ch2: CO
Ch1: CO
Ch1: CO2
Ch1: CH4
Ch1: CO2, Ch2: CO
Ch1: CO
Ch1: CO2
Ch1: CH4
Ch1: CO2, Ch2: CO
Ch1: CO
Ch1: CO2
Ch1: CH4
Ch1: CO2, Ch2: CO
Ch1: CO
Ch1: CO2
Ch1: CH4
Ch1: CO2, Ch2: CO
Ch1: CO2
E
A, B
Y
Ch1: CH4
D
A, B
Y
Ch1: CO2
E
A, B
Y
Ch1: CH4
D
A, B
Y
Ch1: CO2
E
A, B
Y
Ch1: CH4
B
A, B
A
G
A, B
A
B
A, B
A
G
A, B
A
B
A, B
A
G
A, B
A
Ch1: CO, Ch2: O2
Ch3: Converted CO
Ch4: Converted CO average
Ch1: CO2, Ch2: CO,
Ch3: O2
Ch4: Converted CO
Ch5: Converted CO average
Ch1: CO, Ch2: O2
Ch3: Converted CO
Ch4: Converted CO average
Ch1: CO2, Ch2: CO,
Ch3: O2
Ch4: Converted CO
Ch5: Converted CO average
Ch1: CO, Ch2: O2
Ch3: Converted CO
Ch4: Converted CO average
Ch1: CO2, Ch2: CO,
Ch3: O2
Ch4: Converted CO
Ch5: Converted CO average
Contents
Second analyzer
Code symbol
Contents
5th digit 6th digit 22nd digit
Y
Y
P
Ch1: NO
A
Y
Y
Ch1: SO2
F
Y
Y
Ch1: NO, Ch2: SO2
P
A, B
Y
Ch1: NO, Ch2: O2
A
A, B
Y
Ch1: SO2, Ch2: O2
F
A, B
Y
Ch1: NO, Ch2: SO2
Ch3: O2
P
A, B
A
A
A, B
A
F
A, B
A
P
D
A
Ch1: NO
Ch2: O2
Ch3: Converted NO
Ch4: Converted NO average
Ch1: SO2
Ch2: O2
Ch3: Converted SO2
Ch4: Converted SO2 average
Ch1: NO
Ch2: SO2
Ch3: O2
Ch4: Converted NO
Ch5: Converted SO2
Ch6: Converted NO average
Ch7: Converted SO2 average
Ch1: NO
Ch2: Converted NO
Ch3: Converted NO average
A
D
A
Ch1: SO2
Ch2: Converted SO2
Ch3: Converted SO2 average
F
D
A
Ch1: NO
Ch2: SO2
Ch3: Converted NO
Ch4: Converted SO2
Ch5: Converted NO average
Ch6: Converted SO2 average
17
ZKJ7
Example of Code symbol for replacement
[ZRG]
Component
CO, CO2, O2
NO, SO2, O2
Example of code symbol
ZRG6GBB2-0B0ND-FF1F5FY
ZRG6FBB2-0B0ND-FF1F5FY
1st analyzer
Component
CO, CO2, O2
Example of code symbol
ZKJ7G A 14-YJBFB-FYYYY VY -CAB
O2 range 0-25% fixed
External zirconia O2 sensor
2nd analyzer
NO, SO2
ZKJ7F D 14-YJBFB-FYYYYYY-CAB
without external O2 indication
1st analyzer
2nd analyzer
[ZKJ7]
SCOPE OF DELIVERY
ORDERING INFORMATION
•Gas analyzer ... 1 unit
•Spare fuses (250V, 3.15A AC, delay type) ... 2 pcs
•Instruction manual ... 1 copy
1. Code symbols
2. Application and composition of sample gas
Items to be prepared separately
•Various sampling devices (refer to Data Sheets for the
sampling devices)
•Dedicated zirconia O2 sensor (see Page 16)
18
Exclusive Zirconia O2 Sensor
(to be purchased separately)
This sensor should be used with ZKJ7.
Measuring method: Zirconia system
Measurable component and measuring range:
Measurable component
Range
Oxygen
O2
0 to 25vol%
Repeatability:
Within ± 0.5% of full scale
Linearity:
Within ± 1% of full scale
Zero drift:
Within ± 1% of full scale/week
Span drift:
Within ± 2% of full scale/week
Response time: Approx. 20 seconds (for 90% response)
Measured gas flow rate:
0.5 ± 0.25L / min
Remark: T h e Z i r c o n i a s y s t e m , d u e t o i t s
principle, may produce a measuring
error due to relative concentration
versus the com-bustible O2 gas
concentration. Also, a corrosive gas
(SO 2 of 250 ppm or more, etc.) may
affect the life of the sensor.
Enclosure:
Steel casing, for indoor application
Indication:
Temperature indication (LED)
Temperature alarm output:
Contact output 1a contact,
Contact capacity 220V, 1A AC (resistive
load)
Outer dimensions (H x W x D):
141 x 170 x 190mm
Mass {weight}: Approx. 3kg
Finish color:
Munsell 5Y 7/1
CODE SYMBOLS
1 2 3 4 5 6 7 8
Z F K
Description
Y 0 Y Y
Measuring method
Zirconia method
7YY
Power supply
100 to 115V AC 50/60Hz(Standard)
200 to 240V AC 50/60Hz(Standard)
200 to 240V AC 50/60Hz(CE mark)
9
B
C
Gas inlet/outlet size: Rc1/4 or NPT1/4
Power supply:
Rated voltage
;100 to 115V AC or
200 to 240V AC
Rated frequency ;50Hz/60Hz
Max. rated power;215VA (during power
ON)
65VA (during steadystate operation)
OUTLINE DIAGRAM
9 10 11 12 13
4 -
Gas inlet/outlet size
Rc 1/4
NPT 1/4
1
8
(Unit:mm)
17
170
172.5
4
152
OXYGEN ANALYZER
US
2
1
AC250V
T3.15A
3
4
5
6
7
E
F
110
131
141
TEMP.
L
AC
INPUT
N
OUT
ALM
9TH DIGIT
1:RC1/4
8:NPT1/4
48
37
23
ø5
EXTERNAL CONNECTION DIAGRAM
1
2
3
4
5
+
AC power supply
E
6
INLET
OUTLET
7
Output
to ZKJ
Temperature
alarm output
19
ZKJ7
Caution on Safety
*Before using this product, be sure to read its instruction manual in advance.
International Sales Div
Sales Group
Gate City Ohsaki, East Tower, 11-2, Osaki 1-chome,
Shinagawa-ku, Tokyo 141-0032, Japan
http://www.fujielectric.com
Phone: 81-3-5435-7280, 7281 Fax: 81-3-5435-7425
http://www.fujielectric.com/products/instruments/
Information in this catalog is subject to change without notice.
Printed in Japan