Fuji Electric ZFKE, ZKME Specifications

IN-SITU

ZIRCONIA OXYGEN ANALYZER

FOR HAZARDOUS LOCATION

DATA SHEET

This oxygen analyzer is used to continuously measure
oxygen concentration in noncombustible exhaust gas of
industrial boilers or furnaces, and is ideally suited for com­bustion management and control.
The analyzer system is comprised of the detector and
converter coupled together as a complete system. Detec­tor 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 proces­sor, input/output and communications, display and system
controls.
The converter is equipped with advanced functional­ity such as performing the sensor diagnostics and sensor
recovery function, so the detector can be used within long
term stability.

ZFKE, ZKME

Detector (ZFKE)

FEATURES

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.

2. Easy maintenance

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

Depending on the components in the measurement

gas, the characteristics of the sensor might deteriorate.
The equipment includes sensor recovery function elec­tronically, checking the deterioration status of the sensor
depletion.

Therefore, it has high reliability and long-lasting stability.

4. Safe and secure

System detects thermocouple break for heater control on

the sensor side. Safety functions of isolating power sup­ply to the detector or isoralting power via external contact
input are also.

5. Easy operation

The operation and setting for the converter can be per-

formed interactively, and available as English, Japanese
or Chinese for language display.

Converter (ZKME)

SPECIFICATIONS

General Specifications

Measuring object: Oxygen in noncombustible gas
Measuring method:

Directly insert type zirconia system
Measuring range: 0 to 2 ··· 0 to 50 vol% O
2 ranges available in 1 vol% O2 steps

Repeatability: Within ±0.5%FS
Linearity: Within ±2%FS
Response time: Within 4 to 7 sec, for 90% (from calibra-

tion gas inlet)

Warmup time: approx. 10 min
Analog output: 4 to 20mA DC (allowable load resis-

tance less than 500Ω) or 0 to 1V DC
(output resistance more than 100Ω)

Power supply: Rated voltage;

100 to 120V AC (operating voltage 90
to 132V AC)
200 to 240V AC (operating voltage

190 to 264V AC)
Rated frequency; 50/60Hz
Power consumption:
Maximum 240VA (Detector: approx.

200VA, Converter: approx. 40VA)

Normal 70VA (Detector: approx. 50VA,

Converter: approx. 20VA

2

EDS3-139a

Date

May. 8, 2009

ZFKE, ZKME

Detector Specifications (ZFKE)
Measured gas temperature:

Flow guide tube system; −10 to +600ºC

(for general-use, corrosive gas)

Measured gas pressure:

−3 to +3kPa (−306 to +306mmH

O)

2

Flow guide tube: With or without blow-down nozzle
Flange; JIS5K 65A FF
(JIS5K-80AFF for high particulate gas)
Insertion length; 0.3, 0.5, 0.75, 1m
Other: See. Code Symbols

Ejector (general-use):

Probe for vacumming up measured gas

to detector (option)

Operating temperature:

−10 to +60ºC for Primary detecting ele-
ment

125ºC or less at detector flange surface

with power applied

Storage temperature:

Sensing element: −20 to +70ºC
Structure: Dust/rain-proof structure(IEC IP66

equivalent)

Flame proof: See Table 1.
Filter: SUS316 (filtering accuracy 60μm)
Main materials of gas-contacting parts:

Detector; Zirconia, SUS316, platinum
Flow guide tube; SUS316
Calibration gas inlet:
φ6mm tube join or φ1/4-inch tube join (as

specified)

Reference gas inlet (option):
φ6mm tube join or φ1/4-inch tube join (as

specified)

Detector mounting:
Horizontal plane ±45º, ambient sur-

rounding air should be clean.

Outer dimensions: (L × max. dia.) 215mm × 164mm (de-

tector)

Mass (approx.) {weight}:
Detector; 3.0kg
Flow guide tube (for corrosive gas, 1m);

6kg

Finish color: Case: Silver and SUS metallic color
Cover: Blue
Ejector air inlet flow rate:
5 to 10 L/min
Calibration gas flow:

1.5 to 2 L/min

Blowdown air inlet pressure:

2

200 to 300kPa {2 to 3 kgf/cm

1

Table

Detector

TIIS

pending

（

NEPSI EExd IIC T5 Ex II2G

）

Exd IIB T4

}

Converter specification (ZKME)

Concentration value indication:

Digital indication in 4 digits

Contact output signal:

(1) Contact specification; 6 points, 1a 250V AC/3A or 30V

DC/3A

(2) Contact function;

• Under maintenance

• Under blowdown Note3)

• Span calibrating gas

• Zero calibration gas

• Instrument anomalies Note1)

• Alarm Note2)
Note1) The following Instrument errors (1) Thermocou-

ples break (2) Sensor break (3) Temperature fault
(4) Calibration fault (5) Zero/span adjustment fault
(6) Output error turn the contact-ON

Note2) Alarm selects just one as mentioned below (1)

High (2) Low (3) Upper and Lower (4) High-high
(5) Low-low, it turns ON while operating.

Note3) Under blow down is available in case of option,

and it turns ON while operating.

Contact input signal:

(1) Contact specification; 3points (the following option)
ON; 0V (10mA or less), OFF; 5V
(2) Contact function;

• External hold

• Calculation reset

• Heater OFF

• Blow down (option)

• Inhibition of calibration

• Calibration start

• Range change

Calibration method:

(a) Manual calibration with key opera-

tion
(b) Auto. calibration (option)
Calibration cycle; 00 day 00 hour to

99 days 23 hours

(c) All calibration
Calibration gas: • Range settings
Zero gas; 0.010 to 25.00% O
Span gas: 0.010 to 50.00% O

2

2

• Recommended calibration gas concen-

tration
Zero gas; 0.25 to 2.0% O
Span gas; 20.6 to 21.0% O

2

2

(oxygen concentration in the

air)

Blowdown: A function for blowing out with com-

pressed air dust that has deposited in

(option)

the flow guide tube. Blowdown can

be performed for a predetermined time

and at predetermined intervals.
Blowdown cycle; 00 hour 00 minute to

99 hours 59 minutes

Blowdown time; 0 minute 00 second

to 0 minutes 999
seconds

2

Output signal hold:
Output signal is held during cali-

bration, processing recoverable
sensor,processing diagnosis of sensor,
warm-up, PID auto tuning, under set
up maintenance mode " available" and
blowdown. The hold function can also
be released.

Valve and flow Selects zero or span gas during manual
meter (option): zero or span calibration.
Communication function:

RS232C (MODBUS) standard specifica-

tion
RS485 (MODBUS) (option)
Combustion efficiency display (option):
When you select this display, "rich mode

display" will be an simultaneous display.

This function calculates and displays

combustion efficiency from oxygen

concentration and measured gas tem-

perature.
Thermocouple (R) is required for tem-

perature measurement.

Operating temperature:

−20 to +55ºC

Operating humidity:

95% RH or less, non condensing

Storage temperature:

−30 to +70ºC

Storage humidity: 95% RH or less, non condensing
Construction: Dust-proof, rainproof construction

(corresponding to IP65)

Explosion proof: See Table 2
Material: Aluminum case
Outer dimensions (H x W x D):

470 X 326 X 211mm (IP65)
Mass {weight}: IP65: Approx.22kg (excluding cable and

detector)

Finish color: Case: Silver

Cover: blue
Mounting method: Mounted flush on panel

Electrical Safety:

Overvoltage category

; II power supply input

; I relay interfaces

(IEC1010-1)

External overcurrent protective device

; 10A

Equipment interfaces are safety

separated (SELV)

ZFKE, ZKME

2

Table

TIIS

pending

（

NEPSI EExd IIC T6 Ex II2G

）

Exd IIB T6

Converter

3

ZFKE, ZKME

CODE SYMBOLS

(Detector)

14 15169 101112134321 5678

17

5- -KREFZ

Y
1
2
A
B

1
3

Y

0

Y

0

7
8
9
A
B
C
D
E
F
G
H

F
G
H

J

K

L

M

N

3
5
7
1

(Replacement Detector element)

Power supply Code symbols

100 to 120V AC ZFK8YY15-0Y0YY-0YY

200 to 240V AC ZFK8YY35-0Y0YY-0YY

1

Cal. gas inlet

Non (G3/8 female screw)
For F6mm tube
For F1/4 inch tube
Ejector for F6mm tube
Ejector for F1/4 inch tube

Power supply

100 to 120VAC 50/60Hz
200 to 240VAC 50/60Hz

Flow guide tube

None
<Flange size>
JIS 5K 65A
JIS 5K 80A
JIS 5K100A
JIS 10K 65A
JIS 10K 80A
JIS 10K 100A
ANSI 150LB 2B
ANSI 150LB 3B
ANSI 150LB 4B
DIN DN50 PN10
DIN DN80 PN10
<Application / meterial>
For corrosive gas / SUS316
With blow-down nozzle / SUS316
For high particular / SUS316
For high particular with cover / SUS316
For high particular / SUS310S
For high particular with cover / SUS310S
For high particular / titanium
For high particular with cover / titanium
<Length>
300mm
500mm
750mm
1000mm

Y
A
B

5
7

J
E
C

Reference gas inlet
Non (G1/8 female screw)
for F6mm tube
For F1/4 inch tube
Filter
Standard
For high particular
Instruction manual language
Japanese
English
Chinese
Specification name plate

1

Standard
Ex. Standard

N

NEPSI

T

TIIS (pending)

Description

(Converter)

910111221 345678

E

-11MKZ

1

B
E

1
2

Y
1
2
3
4

5

6
7

J
E
C

Y
1
2

1

Note1) When you select this display, rich mode

(Exclusive-special cable)

921 345678

-1ERZRZ

E

R

YA
YB
YC
YD
YE
YF
YG
YH
YJ
YK
YL

YM

Connectable devices

For Z KM E

Types

For R thermocouple

Cable length

6m
10m
15m
20m
30m
40m
50m
60m
70m
80m
90m
100m

Cable end treatment

0

None

1

One side (detector side)

2

Both sides

13

14

-

Output signal

4 to 20mA DC
0 to 1V DC

Communication function

RS-232C
RS-485

Optional Functions

None
Combustion efficiency display function Note1)
Blowdown
Auto calibration
Combustion efficiency indication
+ Blowdown Note1)
Combustion efficiency indication
+ Auto calibration Note1)

Blowdown + Auto calibration
Combustion efficiency indication + Blowdown

+ Auto calibration Note1)

Instruction manual language

Japanese
English
Chinese

Mounting Option

None (Mounting on panel surface)
With valve
With valve + flowmeter

Specification name plate

Standard

Number of Cable Gland

3

3

4

4

5

5

6

6

7

7

Ex Standard

N

NEPSI

T

TIIS (pending)

will be a simultaneous display.

Description

Description

4

SCOPE OF DELIVERY

Detector: Detector main unit × 1, Viton Packing

× 1, thermo seal × 1, mounting screw
(M5mm × 25) × 6, flow guide tube (as
specified) × 1, Wrench × 1, Instruction
manual × 1

Converter: Converter main unit × 1, mounting

screw (M12 × 50) × 4, Cock (option) ×
1, flowmeter (option) × 1,

Accessories (AC250V 500mA T fuse ×

2, AC250V 2.5A T fuse × 2), Wrench ×
1, Instruction manual × 1

Ejector: With detector main unit (option)
Items to be prepared separately:

(1) Standard gas for calibration
Type ZBM
Type ZBM
(2) Reduction valve for standard gas (type ZBD61003)
(3) Flowmeter
Type; ZBD42203, 0.2 to 2L/min (for calibrating gas)
(unnecessary when the code 11th of ZKME is 2)
Type; ZBD42403, 1 to 10L/min (for ejector)
(4) Opner
Type; ZZP∗TK7N9329P2 (for detector; ZFKE)
Type; ZZP∗TK7N9329P1 (for converter; ZKME)

NSH4-01 (up to 5% O2 range)
NSJ4-01 (over 5% O2 range)

CAUTIONS

• If combustible gas (CO, H
gas, error will occur due to burning at the sensor section.
The inclusion of corrosive gas (Si vapor, alkaline metal, P,
Pb etc.) will shorten the life of the sensor.

• When the measured gas temperature is high (+300°C
or higher), the flange should be separated from the
furnace wall in order to bring the detector flange surface
temperature below the specified value +125°C). The
flow guide should be attached in the direction in which
the gas flow to the detector decreases.

• When much dust is included in the gas, the flow guide
tube should be attached at an inclination so that the flow
goes from below to above. And the flow guide should
be attached in the direction in which the gas flow to the
detector decreases.

• In the case of a refuse incinerator, automatic blow down
of the flow guide should not be performed (to prevent
corrosion of the flow guide tube due to drainage). Blow­down should be performed manually when change in
the indication has become very little with the furnace
stopped.

2 etc.) exists in the measured

DEVICE CONFIGURATION

The device to be combined differ according to the conditions of the gas to be measured. Select the devices to be com-

bined with reference to the following table.

Measured gas Device configuration

Application Temperature Gas Flow DUST Note Detector type Converter

3

General-use

(boiler)

For corrosive

gas (refuse

incinerator)

Note (1) Dust volume is approximate value.

(2) Instrument quality air or bottled air is available as reference air by selecting detector with reference air inlet.

600ºC or

less

600ºC or

less

5 to 20m/s Less than 0.2g/Nm

Less than 10g/Nm3Fuel: coal

5 to 20m/s Less than 1g/Nm

Less than 10g/Nm3Included low moisture

Less than 25g/Nm3Included low moisture

Less than 25g/Nm3Included high moisture

Fuel; gas, oil

with blow down

3

Included low moisture

with blow down

with blow down

with blow down

ZFKER

ZFKER

ZFKER

ZFKER

ZFKER

ZFKER

5- F Y -

5- G Y -

5- F Y -

5- G Y -

H

5- K Y -

M
J

5- L Y -

N

type

ZKME
ZKME

ZKME
ZKME

ZKME

ZKME

5