Fuji Electric ZKMA Operating Manual

Instruction Manual

ZIRCONIA OXYGEN
ANALYZER CONVERTER

Type: ZKMA, ZKMB

INZ-TN2ZKMA-E

PREFACE

We are grateful for your purchase of Fuji Direct Insertion Type Zirconia Oxygen Analyzer Converter (ZKM).

First read this instruction manual carefully until an adequate understanding is acquired, and



then proceed to installation, operation and maintenance of the converter. Improper handling
may result in accidents or injury.
The specifications of this converter will be changed without prior notice for further product



improvement.
Modification of this converter is strictly prohibited unless a written approval is obtained



from the manufacturer. Fuji will not bear any responsibility for a trouble caused by such a
modification.
This instruction manual shall be stored by the person who actually uses the converter.



After reading through the manual, be sure to keep it near at hand for future reference.



This product falls within category 9 (Monitoring and control instruments including indus-



trial monitoring and control instruments) of Annex 1 of EU RoHS directive (2011/65/EU).
Please do not use it for consumer use.
This instruction manual should be delivered to the end user without fail.



Manufacturer: Fuji Electric Co., Ltd.
Type: Described in the nameplate put on the main body
Date of manufacture: Described in the nameplate put on the main body
Product nationality: Japan



Related instruction manual
Direct insertion type zirconia oxygen analyzer detector (Type: ZFK8) ·········· INZ-TN5ZFK8-E

Issued in October 2015

It is prohibited to transfer part or all of this manual without Fuji



Notice

Electric’s permission in written format.
Description in this manual is subject to change without prior no-



tice.

Fuji Electric Co., Ltd. 2015

INZ-TN2ZKMA-E

- i -

SAFETY PRECAUTIONS

First of all, read this “SAFETY PRECAUTIONS” carefully, and then use in the correct way.

Installation, transportation, wiring, use, maintenance of this product shall be carried out by suitably trained



personnel.
First-time users should operate the instrument under the supervision of a fully competent person in the



operation.
Be sure to observe the instructions shown below, because they describe important information on safety.



Those safety precautions are ranked in 3 levels, “DANGER”, “CAUTION” and “PROHIBITION”.

If operation is incorrect, a dangerous situation may occur, resulting in

DANGER

CAUTION

PROHIBITION

death or serious injuries.

If handled wrongly, a dangerous situation may occur, and medium trou­ble or slight injury may be caused and only property damage may be
caused.

Items which must not be done are noted.

The items noted under “



All the items are important and must be fully observed.

DANGER

CAUTION

CAUTION

Caution on installation and transportation

” may also result in serious trouble depending on circumstances.

This unit is not explosion-proof type. Do not use it in an atmosphere



of explosive gases. Otherwise serious accidents such as explosion or
fire may result.

This unit should be installed in a place which conforms to the condi-



tions noted in the instruction manual. Otherwise, it may cause electric
shocks, fire, failure or malfunction of the unit.
During installation work, care should be taken to keep the unit free



from entry of cable chips or other foreign objects. Otherwise, it may
cause fire, failure or malfunction of the unit.
For installation, observe the rule on it given in the instruction manual



and select a place where the weight of converter can be endured. In­stallation at an unsuited place may cause turnover or fall and there is a
risk of injury.
Be sure to wear gloves when handling the unit.



Bare hands may invite an injury.
Before transport, fix the door so that it will not open. Otherwise, the



door may be separated and fall to cause an injury.

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INZ-TN2ZKMA-E

Cautions on wiring

Be sure to turn off all the power before performing wiring. Otherwise



CAUTION

DANGER

CAUTION

electric shock may result.
Be sure to perform class D grounding work.



Otherwise, electric shock or failure may result.
Select a proper wiring material that satisfies the ratings of the instru-



ment. Otherwise, electric shock or fire may result.
Connect power source of correct rating. Connection of a power source



of incorrect rating may lead to a risk of fire.

Cautions on use

If unusual smell or sound has been produced, immediately stop the



instrument. Any discharge produced may cause a fire.

Leaving the converter unused for a long time or restarting it after dis-



use requires procedures different from normal operation or suspension
procedures. Be sure to follow the instructions in each instruction man­ual. Otherwise, intended performance may not be achieved, or acci­dents or injury may result.
Do not operate the converter for a long time with its door left open.



Otherwise, dust, foreign matter, etc. may stick on internal walls, there­by causing failure.

PROHIBITION

CAUTION

CAUTION

wise, failure, electric shock or injury may result.

Caution on maintenance and inspection

Before maintenance and check, be sure to turn off the main power



supply and wait until the detector is cooled adequately. Otherwise,
you may suffer a burn.
Before removing the detector from the flue for maintenance and



check, make sure the furnace is stopped. Otherwise, you may suffer a
burn.
Before working, take off a wrist watch, finger ring or the like metallic



accessories. And never touch the instrument with a wet hand. Other­wise, you will have electric shocks.
If the fuse is blown, eliminate the cause, and then replace it with the



one of the same capacity and type as before. Otherwise, it may cause
electric shocks or failure.

Others

If the cause of a failure cannot be identified by referring to the instruc-



tion manual, be sure to contact your dealer or Fuji’s technician in
charge of adjustment. Disassembling the instrument carelessly may
result in electric shock or injury.
Do not use a replacement part other than specified by the instrument



maker. Otherwise, adequate performance will not be provided. Be­sides, an accident or failure may be caused.
Replacement parts such as a maintenance part should be disposed of



as incombustibles.

Do not touch the input/output terminals with metal or finger. Other-



INZ-TN2ZKMA-E

- iii -

WARRANTY AND MAINTENANCE



1. Scope of application

To use this equipment, the following conditions must be met:

 the use of the equipment incurs no risk of a serious accident even if a failure or malfunction occurs on the

equipment, and

 in case of product failure or malfunction, safety measures such as redundant design, prevention of mal-

function, fail safe system, foolproof mechanism are provided outside of the equipment.

Be sure to use this instrument under the conditions or environment mentioned in this instruction manual.

Please consult us for specifications for the following applications:

Radiation-related facilities, systems related to charging or settlement, or other usages which

may have large impact on lives, bodies, property, or other rights or interests.

2. Operating conditions and environment

Refer to “Caution on Safety”.

3. Precautions and prohibitions

Refer to “Caution on Safety”.

4. Warranty

4-1. Period of warranty

1) Warranty period for this product including accessories is one year after delivery.

2) Warranty period for the parts repaired by our service providers is six months after the completion of repair.

4-2. Scope of warranty

1) If any failure or malfunction attributable to Fuji Electric occurs in the period of warranty, we shall pro-

vide the product after repairing or replacing the faulty part for free of charge at the place of purchase or

delivery.

The warranty does not apply to failure or malfunctions resulting from:

a) inappropriate conditions, environment, handling or usage that is not instructed in a catalog, instruction

book or user's manual, or overuse of the product

b) other devices not manufactured by Fuji Electric

c) improper use, or an alteration or repair that is not performed by Fuji Electric

d) inappropriate maintenance or replacement of expendable parts listed in the instruction book or the

catalog

e) damages incurred during transportation or fall after purchase

f) any reason that Fuji Electric is not responsible for, including a disaster or natural disaster such as

earthquake, thunder, storm and flood damage, or inevitable accident such as abnormal voltage.

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INZ-TN2ZKMA-E

2) Regardless of the time period of the occurrence, Fuji Electric is not liable for the damage caused by the

factors Fuji Electric is not responsible for, opportunity loss of the purchaser caused by malfunction of Fu-

ji Electric product, passive damages, damage caused due to special situations regardless of whether it was

foreseeable or not, and secondary damage, accident compensation, damage to products that were not

manufactured by Fuji Electric, and compensation towards other operations.

5. Failure diagnosis

Regardless of the time period of the occurrence, if any failure occurs, the purchaser shall perform a primary

failure diagnosis. However, at the purchaser's request, Fuji Electric shall provide the diagnosis service for a

fee. In such a case, the purchaser shall be charged for the service.

6. Service life

This product, excluding limited-life parts and consumable parts, is designed for a service life of 10 years un-

der a general condition (average ambient temperature of 30°C).

The service life may be shortened depending on operating conditions and environment. To ensure the service

life, it is important to perform planned maintenance of the product including limited-life parts and consuma-

ble parts.

7. Maintenance plan

Maintenance can be divided into “preventive maintenance” and “corrective maintenance”. Preventive

maintenance can further classified into “daily inspection” and “periodic inspection”. Preventive maintenance

is achieved through systematic implementation of "daily inspection" and "periodic inspection".

(1) Daily inspection

Be sure to perform daily inspection prior to operation to check for any problem in daily operation. For the

specific items of daily inspection, refer to Chapter 9, “MAINTENANCE AND CHECK”.

(2) Periodic inspection

Periodic inspection is to replace limited-life parts before their service lives are over, thus preventing failure.

Inspection interval: 6 months to 12 months. If you are using the instrument under harsh environment, we

recommend you to shorten the inspection interval. For the specific items of periodic inspection, refer to

Chapter 9, “MAINTENANCE AND CHECK”.

(3) Corrective maintenance

Corrective maintenance is a measure to be taken after a trouble has occurred. Refer to 9.5 “Troubleshooting”.

If the measures mentioned in this instruction manual do not solve the problem, please contact our sales office

or service office.

INZ-TN2ZKMA-E

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8. Limited-life parts and consumable parts

This product contains the following limited-life parts and consumable parts which may affect the service life

of the product itself.

(1) LCD

Design life: approx. five years for continuous use



Symptoms of LCD screen's end-of-life: deterioration of display, backlight failure, etc.



Factors which affect LCD's life: temperature. The life is shortened by half when the temperature rises



by 10°C. (Arrhenius' law)

Replacement: Estimate the lifetime of LCD according to your operating environment, and have the



LCD replaced at appropriate time.

(2) Aluminum electrolytic capacitors

Design life: 5 years under general working conditions (annual average of ambient temperature: 30°C)



Symptoms when a capacitor loses its capacity: deterioration of power quality, malfunction



Factors which affect capacitor life: temperature. The life is shortened by half when the temperature



rises by 10°C. (Arrhenius' law)

Replacement: Estimate the lifetime of capacitor according to your operating environment, and have



the capacitor replaced or overhauled at appropriate time, at least once in 10 years.

Do not use capacitors beyond its lifetime. Otherwise, electrolyte leakage or depletion may cause odor, smoke,

or fire. Please contact Fuji Electric or its service providers when an overhaul is required.

9. Spare parts and accessories

Refer to “Checking of contents of the package” or Chapter 9, “MAINTENANCE AND CHECK” for details.

10. Period for repair and provision of spare parts after product discontinuation (maintenance period)

The discontinued models (products) can be repaired for five years from the date of discontinuation. Also,

most spare parts used for repair are provided for five years from the date of discontinuation. However, some

electric parts may not be obtained due to their short life cycle. In this case, repair or provision of spare parts

may be difficult even in the above period.

Please contact Fuji Electric or its service providers for further information.

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INZ-TN2ZKMA-E

Contents

PREFACE ..........................................................................................................................................................i

SAFETY PRECAUTIONS ............................................................................................................................. ii

WARRANTY AND MAINTENANCE ...........................................................................................................iv

CHECKING OF CONTENTS OF THE PACKAGE .................................................................................... x

STORAGE CONDITIONS .............................................................................................................................. x

1. GENERAL .................................................................................................................................................... 1

1.1 Direct insertion type zirconia oxygen analyzer ........................................................................................ 1

2. OPERATING PARTS AND THEIR FUNCTIONS ................................................................................... 2

2.1 Outline Drawing ....................................................................................................................................... 2

2.2 Terminal block .......................................................................................................................................... 3

2.3 Didplay and operation panel ..................................................................................................................... 3

2.4 Internal constitution .................................................................................................................................. 4

3. INSTALLATION .......................................................................................................................................... 5

3.1 Installation site .......................................................................................................................................... 5

3.2 How to install the converter ...................................................................................................................... 6

3.2.1 Mounting on panel (ZKMA) ............................................................................................................. 6

3.2.2 Pipe mounting (ZKMA) ..................................................................................................................... 6

3.2.3 Mounting on panel (ZKMB) ............................................................................................................. 7

3.2.4 Pipe mounting (ZKMB) .................................................................................................................... 7

4. WIRING AND PIPING ................................................................................................................................ 8

4.1 Before wiring ............................................................................................................................................ 8

4.2 Wiring to terminals ................................................................................................................................... 9

4.2.1 Wiring to power supply and detector ................................................................................................. 9

4.2.2 Cable gland and input and output lines ............................................................................................ 10

4.2.3 Allocation of the terminal block ....................................................................................................... 11

4.3 Wiring and piping diagram ..................................................................................................................... 12

4.4 Handling of standard gas (An article on separate order) ........................................................................ 16

5. OPERATION .............................................................................................................................................. 17

5.1 Preparation for operation ........................................................................................................................ 17

5.2 Key operation flow diagram (outline) .................................................................................................... 19

5.3 Initial parameter value table ................................................................................................................... 23

5.3.1 Parameters related to measurement .................................................................................................. 23

5.3.2 Parameters related to calibration ...................................................................................................... 23

5.3.3 Parameters related to blowdown (displayed if the option is provided) ............................................ 24

5.3.4 Parameters related to maintenance ................................................................................................... 24

5.3.5 Other parameters .............................................................................................................................. 25

6. OPERATION START AND STOP .......................................................................................................... 27

6.1 Operation start ........................................................................................................................................ 27

6.2 Operation stop ......................................................................................................................................... 27

6.3 Actions during operation ......................................................................................................................... 28

6.4 Check the contents of display ................................................................................................................. 29

6.4.1 Check of state information ............................................................................................................... 29

6.4.2 Checking the error information ........................................................................................................ 30

6.4.3 Checking the alarm information ....................................................................................................... 30

6.5 Oxygen detector standard output voltage ............................................................................................... 31

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7. CALIBRATION ......................................................................................................................................... 32

7.1 Preparation ............................................................................................................................................. 32

7.2 Manual calibration ................................................................................................................................. 33

7.3 Auto calibration (option) ........................................................................................................................ 35

7.4 Remote calibration ................................................................................................................................. 37

7.5 All calibration (option) ........................................................................................................................... 39

8. BLOWDOWN (OPTION)......................................................................................................................... 40

8.1 Preparation for blowdown ...................................................................................................................... 40

8.2 Manual blowdown.................................................................................................................................. 40

8.3 Automatic blowdown ............................................................................................................................. 41

8.4 Remote blowdown ................................................................................................................................. 43

9. MAINTENANCE AND CHECK .............................................................................................................. 45

9.1 Checking ................................................................................................................................................ 45

9.2 Spare parts .............................................................................................................................................. 45

9.3 Replacement of fuse ............................................................................................................................... 46

9.4 Adjustment of monitor contrast .............................................................................................................. 47

9.5 Troubleshooting ..................................................................................................................................... 48

10. SETTING AND OPERATING OF PARAMETER ............................................................................... 50

10.1 Measured menu .................................................................................................................................... 50

10.1.1 Display range setting screen .......................................................................................................... 50

10.1.2 Decimal point position setting screen ............................................................................................ 51

10.1.3 Full scale setting screen ................................................................................................................. 52

10.1.4 Setting screen for calculation time of maximum and minimum values appears ........................... 53

10.2 Calibration menu .................................................................................................................................. 54

10.2.1 Automatic calibration setting (option) ........................................................................................... 54

10.2.2 Date and time for starting automatic calibration (option) ............................................................. 55

10.2.3 Cycle time setting of automatic calibration (option) ..................................................................... 56

10.2.4 Performing all calibration (option) ................................................................................................ 57

10.2.5 Performing a manual span calibration ........................................................................................... 58

10.2.6 Performing a manual zero calibration ........................................................................................... 59

10.2.7 Calibration gas setting ................................................................................................................... 60

10.2.8 Calibration waiting setting (option) ............................................................................................... 61

10.2.9 Calibration error clear ................................................................................................................... 62

10.2.10 Operation setting screen of calibration range .............................................................................. 63

10.3 Blowdown menu (option) .................................................................................................................... 64

10.3.1 Automatic blowdown setting ......................................................................................................... 64

10.3.2 Date and time setting of automatic blowdown .............................................................................. 65

10.3.3 Automatic blowdown cycle setting ............................................................................................... 66

10.3.4 Procedure for setting blowdown time ............................................................................................ 67

10.3.5 Perfoming manual blowdown ........................................................................................................ 68

10.4 Maintenance menu ............................................................................................................................... 69

10.4.1 Error log display ............................................................................................................................ 69

10.4.2 Clearing error logs ......................................................................................................................... 71

10.4.3 Alarm log display .......................................................................................................................... 72

10.4.4 Clearing alarm logs ....................................................................................................................... 73

10.4.5 Performing a manual sensor check ................................................................................................ 74

10.4.6 Maintenance mode setting ............................................................................................................ 75

10.4.7 Password setting ............................................................................................................................ 76

10.4.8 PID auto tuning ............................................................................................................................. 77

10.5 Parameter menu ................................................................................................................................... 78

10.5.1 Current date and time setting ......................................................................................................... 78

10.5.2 Contact input setting ...................................................................................................................... 79

10.5.3 Selection of alarm contact output .................................................................................................. 80

10.5.4 High limit setting of oxygen concentration ................................................................................... 81

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10.5.5 Lower limit setting of oxygen concentration ................................................................................. 82

10.5.6 HH limit setting of oxygen concentration ...................................................................................... 83

10.5.7 LL limit setting of oxygen concentration ....................................................................................... 84

10.5.8 Hysteresis Setting ........................................................................................................................... 85

10.5.9 Hold treatment setting (maintenance hold) ................................................................................... 87

10.5.10 Hold value setting (maintenance hold) ........................................................................................ 88

10.5.11 Setting of hold setting value (maintenance hold) ........................................................................ 89

10.5.12 Setting of measurement recovery time (maintenance hold) ........................................................ 90

10.5.13 Hold treatment setting (error hold).............................................................................................. 91

10.5.14 Hold value setting (error hold) ..................................................................................................... 92

10.5.15 Setting of hold setting value (error hold) .................................................................................... 93

10.5.16 Setting of key lock ....................................................................................................................... 94

10.5.17 Setting of automatic OFF time ..................................................................................................... 95

10.5.18 Station number setting .................................................................................................................. 96

10.5.19 Adjustment screen for analog output 0% ..................................................................................... 97

10.5.20 Adjustment screen for analog output 100% ................................................................................. 98

10.5.21 Fuel coefficient setting (option) ................................................................................................... 99

10.6 Factory menu ...................................................................................................................................... 100

10.6.1 Password setting screen ................................................................................................................ 100

11. SPECIFICATIONS ................................................................................................................................ 101

11.1 Specifications ...................................................................................................................................... 101

11.2 Code symbols ...................................................................................................................................... 104

INZ-TN2ZKMA-E

- ix -

CHECKING OF CONTENTS OF THE PACKAGE

Check that all of the following are contained in the delivered package.



(1) Zirconia Oxygen Analyzer Converter main unit 1 unit
(2) Accessories 1 set (Refer to the table below.)

Table 1 Standard accessories

No. Item Q'ty Remarks

1 Fuse 2 250 V T 2.5 A

2 Ferrite core 1 For power cable

3 Instruction manual 1

Instruction manual (RS485

4

communication or HART
communication)

5 Mounting bracket 1 set

Japanse, English, or Chinese (depends on the specifica­tion)

When you specified RS485 communication or HART

1

communication.
Language: Japanse, English, or Chinese (as specified)

For panel mount version: M8 sems screw (stainless
steel), 4 pcs
For pipe mount version: U bolt (stainless steel ), 2 pcs

: M8 nut, washer (stainless steel) 4 pcs
: support 2 pcs

STORAGE CONDITIONS

Store the unit in a location that meets the following conditions:

(1) Vibration, dust, dirt, and humidity are minimal.
(2) A place not subjected to radiated heat from a heating furnace, etc.
(3) The atmosphere is non-corrosive.
(4) The ambient temperature is within the range from -30°C through 70°C (no condenstaion) and the

ambient humidity is 95%RH or lower.

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INZ-TN2ZKMA-E

1. GENERAL

This manual describes the installation, operation, and the maintenance of the zirconia oxygen analyzer con­verter. Read it carefully before using the converter. For the detector, flow guide tube and ejector used with
the converter, refer to relevant instruction manuals.

1.1 Direct insertion type zirconia oxygen analyzer

The direct insertion type zirconia oxygen analyzer consists of a direct insertion type zirconia detector (type
ZFK) and converter (type ZKM).
The analyzer intended for the measurement of oxygen concentration in exhaust gas is used for combustion
control.

Caution

Power voltage for the converter must conform to that for the detector to be connected. Don’t use any
power voltage different from the power specifications of the detector. Otherwise it may result in damage
to the detector.

100/120V AC50/60Hz for ZFK8R1
200/240V AC50/60Hz for ZFK8R3

Operating environment

1) Operating temperature: -20 to 55°C

2) Operating humidity: 95%RH or less, non condensing

3) Power voltage: 100 to 120V AC 50/60Hz or 200 to 240V AC 50/60Hz

4) Pollution degree: 2

5) Installation category: II

6) Altitude: up to 2000m

INZ-TN2ZKMA-E

- 1 -

2. OPERATING PARTS AND THEIR FUNCTIONS

2.1 Outline Drawing

(1) ZKMA

(2) ZKMB

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INZ-TN2ZKMA-E

2.2 Terminal block

2.3 Didplay and operation panel

LED

①

ESC key

⑥

⑤

Digit key

No. Name Description

Display unit

①

LED Lights during power supply.

②

ESC key Used to return to the previous screen or exit the setting.

③

Digit key

④

Up key

⑤

ENT key Used to determine the setting values or to start calibration or

⑥

Displays the concentration value and setting values.

Used to change the setting values.

other operations.

④

Display

①

Up key

ENT key

③

INZ-TN2ZKMA-E

- 3 -

2.4 Internal constitution

(1) ZKMA

I/O board

CPU board

②

①

Communication

③

board (optional)

Fuse

⑦

Packing

④

Earth terminal

⑥

⑤

Terminal block

(2) ZKMB

You can see the CPU board, the I/O board, and the communication board (optional) if you remove the M3

screw and open the inner cover.

Packing

⑦

No. Name Description

CPU board The liquid crystal display and the memory circuit are installed.

①

I/O board The input/output circuit and the power circuit are installed.

②

Communication board RS485 communication board or HART communication board is installed.

③

Fuse Protects the CPU board and the I/O board from over-current.

④

Terminal block

⑤

Earth terminal Used as frame gland (FG).

⑥

Case packing Protects electrical components from water and dust.

⑦

Terminal block

⑤

Terminals for power cable, detector cable, and input/output cables.

Earth terminal

⑥

M3 screw

Fuse

④

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INZ-TN2ZKMA-E

3. INSTALLATION

DANGER

 This unit is not explosion-proof type. Do not use it in an atmosphere of explosive gases. Otherwise

serious accidents such as explosion or fire may result.

 For installation, observe the rule on it given in the instruction manual and select a place where the

weight of converter can be endured. Installation at an unsuited place may cause turnover or fall and
there is a risk of injury.

 Before transport, fix the door so that it will not open. Otherwise, the casing may be separated and fall

to cause an injury.

 During installation work, care should be taken to keep the unit free from entry of cable chips or other

foreign objects. Otherwise, it may cause fire, failure or malfunction.

CAUTION

3.1 Installation site

Install the converter in a place that satisfies the following conditions.

(1) Space for periodic inspection and wiring work is available.
(2) Vibration, dust, dirt, and humidity are minimal.
(3) A place not subjected to radiated heat from a heating furnace, etc.
(4) The atmosphere is non-corrosive.
(5) Away from electrical devices that may cause noise trouble (such as motor and transformer), and

equipment that may cause electromagnetic or electrostatic induction trouble.

(6) A place where ambient temperature and humidity are -20 to +55°C and 95%RH or less.

Secure at least 100 mm of space between the converter and nearby wall. Also secure a space of opening the
front cover for maintenance.
Secure a cable wiring space under the case.

Ｅ

Ｐ

Ｏ

400 or more

Ｎ

147147

100

or

more

Unit: mm

Top view of mounting (ZKMA)

INZ-TN2ZKMA-E

Ｎ

Ｅ

Ｐ

Ｏ

240

580 or more

240

Top view of mounting (ZKMB)

- 5 -

100

or

more

Unit: mm

3.2 How to install the converter

3.2.1 Mounting on panel (ZKMA)

Mounting dimensions Installation

4-M8

72

250

No. Name Quantity

Code Standard tightening torque

Unit: mm

1 Converter 1
2 Sems screw (M8×12) 4

M8

12.5 [N･m]

3.2.2 Pipe mounting (ZKMA)

Installation

No. Name Quantity

1 Converter 1
2 Hexagon nut (M8) 4
3 Spring washer (M8) 4
4 Plain washer (M8) 4
5 U bolt (M8) 2
6 Support panel 2

Code Standard tightening torque

M8

12.5 [N･m]

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INZ-TN2ZKMA-E

3.2.3 Mounting on panel (ZKMB)

Mounting dimensions Installation

No. Name Quantity

4-M8

72

Code Standard tightening torque

312

Unit: mm

1 Converter 1
2 Sems screw (M8×12) 4

M8

12.5 [N･m]

3.2.4 Pipe mounting (ZKMB)

5

6

Pipe for
mounting

5

3,4

2

2

3,4

Installation

1

No. Name Quantity

1 Converter 1
2 Hexagon nut (M8) 4
3 Spring washer (M8) 4
4 Plain washer (M8) 4
5 U bolt (M8) 2
6 Support panel 2

Code Standard tightening torque

M8

12.5 [N･m]

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4. WIRING AND PIPING

: Wiring work must be carried out with all power supplies turned off. Otherwise electric

CAUTION

shock may result.

: Be sure to ground the Converter. (Class D grounding)

4.1 Before wiring

(1) Power voltage for the converter must conform to that for the detector to be connected.
(2) Power supply wiring

Use 1.25sq 600V vinyl insulated cable (JISC3307) or equivalent as power supply cable.



Use the main ground wire longer than the L1 and L2 lines.



Fix the part of the AC cable sheath that is more inner than the cord bushing by 3 mm or more.



Use a solderless terminal for the end of the AC cable. For the main ground wire, use the solderless



terminal whose core wire and sheath are caulked separately (double caulking).
Connect the ground wire to the following:



M4 screw / round terminal of the main ground wire / tooth lock washer / casing

(3) Provide adequate protection of the exclusive cable (6 cores in total), which connects the detector to

converter, using wire protection tube, etc. Separate these cables from the power cable (noise preven­tion).

(4) Keep the wire for output signals as far as possible (more than 30cm) from the power line and heavy

current lines to prevent induced noise. Also, wherever possible use a shielded cable and earth one
point of the shield.

Note) For connection of the lines to the external terminals, use of ring crimp solderless terminal

with insulation sleeve is recommended.

- 8 -

INZ-TN2ZKMA-E

4.2 Wiring to terminals

4.2.1 Wiring to power supply and detector

(1) <ZKMA>

(2) <ZKMB>

Note 1: Fix the exclusive cable (O

that its sheath is 10 mm or less.
When attaching the nut, turn it by hand until it does not move and then tighten it with a spanner
by about 1/4 turn.

Note 2: Wire a protective earth to earth terminal of above figure. (Class D, grounding resistance: 100Ω

or less)

Note 3: Wind the power cable around the ferrite core twice.

INZ-TN2ZKMA-E

sensor input / O2 sensor thermocouple input) with the cable gland so

2

- 9 -

4.2.2 Cable gland and input and output lines

(1) <ZKMA>

(2) <ZKMB>

- 10 -

INZ-TN2ZKMA-E

4.2.3 Allocation of the terminal block

INZ-TN2ZKMA-E

- 11 -

4.3 Wiring and piping diagram

4.3.1.1 Flow guide tube system

- 12 -

INZ-TN2ZKMA-E

4.3.1.2 Flow guide tube system (with valve)

INZ-TN2ZKMA-E

- 13 -

4.3.1.3 Ejector system

- 14 -

INZ-TN2ZKMA-E

4.3.1.4 Ejector system (with valve)

INZ-TN2ZKMA-E

- 15 -

4.4 Handling of standard gas (An article on separate order)

4.4.1.1 Operation

(1) Make sure the handle is closed on the high pressure gas container, then detach the cap nut.
(2) Attach the high pressure gas container using the cap nut with packing of the pressure reduction valve.
(3) Make sure the secondary pressure adjusting valve is turned fully counterclockwise (pressure not ap-

plied) and the outlet needle is turned fully clockwise (closed), then open the handle.

(4) Turn the secondary pressure adjusting valve clockwise and set to the normal value of 20 to 30 kPa,

then open the outlet needle slowly to allow the gas to flow.

Pressure reduction valve

(WR11FS)

Fow rater

Secondary
pressure meter

Primary pressure
meter

Cap nut

Handle

Cap nut

Packing

Secondary pressure
adjusting valve

Outlet needle

High pressure
gas container

4.4.1.2 Piping

(1) The gas outlet of the pressure reduction valve is of Rc 1/4 (internal thread).

Prepare the joint and tube (such as 6/  4 teflon tube).

4.4.1.3 Caution

(1) Fasten securely, so there is no gas leakage from the pressure reduction valve connection or from

threaded part of the joint.

(2) Store high pressure gas containers in a place protected from direct sunlight and rain.
(3) After use, be sure to close the handle.

- 16 -

INZ-TN2ZKMA-E

5. OPERATION

5.1 Preparation for operation

Preparation can be performed after installation or on the bench.

(1) Wiring check (Refer to “4.2”, “4.3”)

(2) Confirmation of the power supply specifications (Please check the main power supply and the

power supply voltage specification of the detector.)

(3) Power ON.

The analyzer turns on when the power is supplied. (Refer to “2.4”)

OXYGEN ANALYZER

VER . YY/MM

WARM-UP

HEATER 234 °C

The message shown left appears on the LCD screen.

After about 6 seconds, the display is automatically switched to the
warming-up screen.

(4) Warm-up

Warm-up takes 10 minutes or less. Then the analyzer starts temperature control for the detector
ZFK.

Note 1: If the temperature control completes within 10 minutes, the analyzer stops warm-up to

start operation. When you first use the analyzer, proceed to the step 5 “PID auto tuning”.

Note 2: Even if the temperature control does not complete within 10 minutes, the analyzer stops

warm-up to start operation, however, for 7 minutes after the warm-up stoped, the analyzer
cannot detect the error of the heater temperature nor display it. (Carry out the step 5 “PID
auto tuning” during this period.)

(5) PID auto tuning

When you first use the analyzer, perform the PID auto tuning within 7 minutes after the stop of
warm-up, in the state that the the detector ZFK is connected. Refer to Chapter 10 for the
procedures of the PID auto tuning. When the PID auto tuning is finished, the analyzer perform
warm-up again to check if tempertature control is possible, and then starts operation.

(6) Parameter setting

Move to each Menu with reference to the paragraph “5.2 Key operation flow diagram (outline)”,
and set a necessary parameter. Refer to the paragraph “5.3 Initial parameter value table”.
If you need to change a parameter, refer to the “Chapter 10”.

(7) Calibration

At the first operation, perform manual calibration after warm-up using a calibration gas.
Refer to “chapter 7” for calibration procedures.

INZ-TN2ZKMA-E

- 17 -

(8) Auto calibration (option)

Automatic calibration may be performed at specified time intervals.
Refer to “7.3” for automatic calibration settings.

(9) Blowdown (option)

A flow guide tube blowdown feature prevents the flow guide tube from clogging due to dust in
the gas stream.
Refer to “chapter 8” for operation procedures.

Operation

- 18 -

INZ-TN2ZKMA-E

5.2 Key operation flow diagram (outline)

INZ-TN2ZKMA-E

- 19 -

- 20 -

INZ-TN2ZKMA-E

INZ-TN2ZKMA-E

- 21 -

- 22 -

INZ-TN2ZKMA-E

5.3 Initial parameter value table

5.3.1 Parameters related to measurement

Parameter setting Displayed message Range Initial value

Display range

DISPLAY RANGE

RANGE1 RANGE2

Range1 or Range2 Range-1 10.1.1

Reference
paragraph

Decimal point position

Range1




Range2

Full scale

Range1




Range2

Calculation time of max­imum and minimum val­ues







DECIMAL POINT

00.00

FULL SCALE

25.00

CALCULATE TIME

024 h

[00.00]
[0.000]

2 to 50 in 1 vol% steps 25.00 vol% 10.1.3

0 to 240 hour in 1-hour
steps

[00.00] 10.1.2

24 hour 10.1.4

5.3.2 Parameters related to calibration

Parameter setting Displayed message Range Initial value

Auto calibration function
(Displayed if the option is
provided.)

Date and time for starting
automatic calibration
(Displayed if the option is
provided.)

Automatic calibration
cycle time
(Displayed if the option is
provided.)

Calibration gas concen­tration-1
calibration gas concentra­tion-2

Calibration wait time

AUTO CALIBRATION

YES NO

START DATE

99/01/01 00:00

AUTO CAL. CYCLE

07d 00h

SPAN ZERO

20.600% 01.000%

CAL. WAIT TIME

020 s

YES or NO

Date and time in the fu­ture in the calendar

00d 00h to 99d23h
(h: 00 to 23)

Span:

00.010 to 50.000 vol%
Zero:

00.010 to 25.000 vol%
in 0.001 vol% steps

10 to 999 sec.
in 1 sec. steps

Invalid
(Auto calibration
function: Invalid)

99/01/01 00:00 10.2.2

07d 00h 10.2.3

Span:

20.600 vol%
Zero:

01.000 vol%

300 sec. 10.2.8

Reference
paragraph

10.2.1

10.2.7

Calibration range setting

INZ-TN2ZKMA-E

ABBOUT CAL. RANGE

BOTH CURRENT

Set calibration range
Current or both range

- 23 -

BOTH 10.2.10

5.3.3 Parameters related to blowdown (displayed if the option is provided)

Parameter setting Displayed message Range Initial value

Automatic blowdown
function

BLOW DOWN

YES NO

YES or NO

NO
(The automatic
blowdown func­tion is invalid.)

Date and time for starting
automatic blowdown

START DATE

99/01/01 00:00

Date and time in the fu­ture in the calendar

99/01/01 00:00 10.3.2

Automatic blowdown
cycle time

AUTO BLOW CYCLE

24h 00m

00h 00m to 99h 59m
(m: 00 to 59)

24h 00m 10.3.3

Blowdown time

BLOW DOWN TIME

030 s

0 to 999 sec. in 1 sec.
steps

30 sec. 10.3.4

Reference
paragraph

10.3.1

5.3.4 Parameters related to maintenance

Parameter setting Displayed message Range Initial value

Maintenance mode

Password

MAINTENANCE MODE

YES NO

NEW PASSWORD

0123

YES or NO NO 10.4.6

0000 to 9999 0000 10.4.7

Reference
paragraph

- 24 -

INZ-TN2ZKMA-E

5.3.5 Other parameters

Parameter setting Displayed message Range Initial value

Current date and time

Contact inputs 1 to 3

Alarm contact output

Upper limit of oxygen
concentration

Range-1




Range-2

Lower limit of oxygen
concentration

Range-1




Range-2

Upper 2 limit of oxygen
concentration

Range-1




Range-2

Lower 2 limit of oxygen
concentration

Range-1




Range-2

Hysteresis
(Oxygen concentration
alarm)

Range-1




Range-2

Analog output hold func­tion

Maintenance hold




Output value of analog
output hold

Maintenance hold




Setting the value of ana­log output hold

Maintenance hold



















Error hold

Error hold

Error hold










DATE SET

00/00/01 00:00

DI 1

NONE

DO ALARM SET

ALARM NONE

HIGH ALARM

50.000 vol%

LOW ALARM

00.020 vol%

H-HIGH ALARM

55.000 vol%

L-LOW ALARM

00.010 vol%

HYSTERESIS

10 %

OUTPUT HOLD

YES NO

OUTPUT SELECT

0%

HOLD VALUE

000 %

Date and time in the cal­endar

DI1 to DI3
[NONE]
[BLOW DOWN ON]
[HEATER OFF]
[PROHIBIT CAL.]
[REMOTE CAL.]
[REMOTE HOLD]
[CALCULATE REST]
[OUTPUT RANGE]

[ALARM NONE]
[HIGH ALARM]
[LOW ALARM]
[H-HIGH ALARM]
[L-LOW ALARM]
[H/L ALARM]
[HH/LL ALARM]

0.001 to 55.000 vol% in

0.001 vol% steps

0.001 to 55.000 vol% in

0.001 vol% steps

0.001 to 55.000 vol% in

0.001 vol% steps

0.001 to 55.000 vol% in

0.001 vol% steps

0 to 20 % in 1 % steps 10 % 10.5.8

YES or NO

[0 %] (4 mA/0V)
[100 %] (20 mA/1V)
[Last output value]
[Setting value]

0 to 100 % in 1 % steps 0 %

(14/01/01/ 00:00) 10.5.1

DI1
[NONE]
DI2
[NONE]
DI3
[NONE]

[ALARM NONE] 10.5.3

50.000 vol% 10.5.4

00.020 vol% 10.5.5

55.000 vol% 10.5.6

00.010 vol% 10.5.7

NO
(Analog output
hold function is
invalid.)

[0 %](4 mA/0V)

Reference
paragraph

10.5.2

10.5.9

10.5.13

10.5.10

10.5.14

10.5.11

10.5.15

INZ-TN2ZKMA-E

- 25 -

Parameter setting Displayed message Range Initial value

Measurement recovery
time

Key lock function

MEAS. WAIT TIME

010 s

KEY LOCK

YES NO

0 to 300 sec. in 1 sec.
steps

YES or NO

10 sec. 10.5.12

No
(Key lock func­tion is invalid.)

Automatic OFF time

BACKLIGHT TIME

10 m

0 to 99
in 1-minute steps

10 minutes 10.5.17

Station No.

STATION NO

01

0 to 99 01 10.5.18

FUEL COEFFICIENT

FUEL COEFF.

0.70

0.00 to 1.99 0.70 10.5.21

Reference
paragraph

10.5.16

- 26 -

INZ-TN2ZKMA-E

6. OPERATION START AND STOP

6.1 Operation start

After correct wiring and piping has been completed, turn on the converter to start measurement.
Note: 10 min. of warm-up time is necessary after power ON.

Caution of before starting operation

(1) Furnace operation should be started after an elapsed time of 10 minutes from the point of turn-

ing ”ON” the power supply of this unit

(2) When a detector is to be installed in a furnace already in operation, take care to blow out harmful

gas from the furnace and then install the fully warmed up detector quickly.

(3) Control of detector temperature may get unstable depending on the ambient temperature, power

supply voltage, and other conditions. In such a case (especially when you first use the analyzer),
perform PID auto-tuning after the stop of warm-up (Refer to 10.4.8 PID auto tuning).

6.2 Operation stop

6.2.1.1 When a process (furnace etc.) is to be shutdown for a short time i.e. a week
or so

It is strongly recommended to keep the detector in operation to avoid possible deterioration of platinum elec­trodes in the detector and detector break-down due to repetition of power ON-OFF in a moisture absorption
state.
In case of the detector with an ejector (option), shutdown the air source.

6.2.1.2 When a process (furnace etc.) is to be shutdown for a long time

Turn OFF the power switch of the instrument after gas in the furnace has been replaced completely by ambi­ent air.

INZ-TN2ZKMA-E

- 27 -

6.3 Actions during operation

While the instrument is operating, the following displays can be changed.

- 28 -

INZ-TN2ZKMA-E

6.4 Check the contents of display

The condition of the unit is displayed on the left of the LCD with three letters. The maximum of three items
are displayed on one display. If there are four or more items, “▼” is displayed at the bottom of the screen.
Scroll the screen with the

The unit displays the following three pieces of information:

(1) Condition information (“6.4.1”), (2) Error information (“6.4.2”), (3) Alarm information (“6.4.3”)



key to display the fourth and subsequent items.

6.4.1 Check of state information

Display

message

WUP Warm-up Appears during warm-up

CAL Auto calibration Appears during auto calibration

S Span calibration

Z Zero calibration

SCK Sensor check Displayed during sensor check.

SRC Sensor recovery Displayed during sensor recovery.

BLW Automatic blowdown Displayed during automatic blowdown.

RIC Rich mode

KYL Key Lock Displayed during key lock

RHO Remote heater is off. Displayed while remote heater is off.

RCP Remote calibration is prohibited. Displayed while remote calibration is prohibited.

RAH Remote analog output hold Displayed during remote analog output hold.

RCL Remote calibration Displayed during remote calibration.

RBL Remote blowdown Displayed during remote blowdown.

OVR Over range Displayed when an input is out of the range.

State Remarks

Displayed together with “CAL” or “RIC” during span
calibration.

Displayed together with “CAL” or “RIC” during zero
calibration.

Combustion efficiency option
Displayed when electromotive force is 200mV but no
more than 260mV

INZ-TN2ZKMA-E

- 29 -

6.4.2 Checking the error information

Display

message

Er1 Fault of heater temperature

Er2 Disconnection detection

Er3 Sensor error Appears when the A/D value is saturated.

Er4 Span calibration error

Er5 Zero calibration error

State Remarks

Appears when control temperature of the heater exceeds
the set range.
The heater control is stopped.

Appears when disconnection is detected at the sensor, or
thermocouples for temperature control.
The heater control is stopped.

Appears when the span calibration is abnormal.
(The calibration gas is unstable. / The calibration factor
setting is inappropriate.)

Appears when the zero calibration is abnormal.
(The calibration gas is unstable. / The calibration factor
setting is inappropriate.)

6.4.3 Checking the alarm information

Display

message

ALM Oxygen concentration error

H High limit error Appears together with ALM.

L Lower limit error Appears together with ALM.

HH HH limit error Appears together with ALM.

LL LL limit error Appears together with ALM.

You can select one of the following seven alarms to output to the alarm contact (Contact No. 21 and 22 of the
external terminal blocks) when an oxygen concentration error occurs.

(1) [Not used] : No alarm is output to the contact output.
(2) [High limit alarm] : Alarm contact is output when an high limit alarm occurs.
(3) [Lower limit alarm] : Alarm contact is output when a lower limit alarm occurs.
(4) [HH limit alarm] : Alarm contact is output when an HH limit alarm occurs.
(5) [LL limit alarm] : Alarm contact is output when a LL limit alarm occurs.
(6) [High/lower limit alarm] : Alarm contact is output when an high or lower limit alarm occurs.
(7) [HH / LL limit alarm] : Alarm contact is output when an HH or LL limit alarm occurs.

State Remarks

Appears when the oxygen concentration exceeds any of
specified HH / High / Lower / LL limit values.
(Refer to “10.5.4” to “10.5.8”)

- 30 -

INZ-TN2ZKMA-E

6.5 Oxygen detector standard output voltage

O2 concentration

(%)

0.01 176.38 5.0 32.73 25.0 -4.475

0.1 123.15 10.0 16.71 30.0 -8.689

0.5 85.95 15.0 7.333 40.0 -15.34

1.0 69.93 20.0 0.683 50.0 -20.50

1.5 60.56 20.6 0 – –

2.0 53.91 21.0 -0.445 – –

Output value

(mV)

O2 concentration

(%)

Output value

(mV)

O2 concentration

(%)

Output value

(mV)

INZ-TN2ZKMA-E

- 31 -

7. CALIBRATION

In order to maintain good accuracy, proper calibration using standard gas is necessary. The following 4
methods of calibration are provided.

(1) Manual calibration (“7.2”), (2) Auto calibration (option) (“7.3”),
(3) Remote calibration (“7.4”), (4) All calibration (option) (“7.5”)

7.1 Preparation

Check of piping and wiring



Perform wiring and piping correctly referring to Item “4.3”. At this time, the main valve of standard
gas should be left open. Since high pressure is present at piping connections, use cap nut joints and take
special care with regard to air-tightness. Calibration gas flow should be 1.5 ± 0.5 L/min.
Setting of calibration gas concentration



Referring to “10.2.7 Calibration gas setting” set the oxygen concentration in standard gas cylinder to
be used.
Setting of calibration range



Set the range for calibration according to “10.2.10 Operation setting screen of calibration range.”

- 32 -

INZ-TN2ZKMA-E

7.2 Manual calibration

Description

Span/zero is calibrated once by key operation.



Calibration must be made in the order of span and zero.



Perform calibration after a calibration gas is supplied to the detector and the output signal of the de-



tector becomes stable.
If the unit does not have an auto calibration function, the operator shall perform open and close opera-



tions, or adjust the flow rate of calibration gas.
During calibration, if the analog output hold function (maintenance hold) is enabled, the analog output



signal is held at the set value. Even after the calibration, the hold is maintained during the set time as a
measurement recovery time.

Procedure

Operation

(example)

Executes span calibration and zero calibration.

Key operation Description

(1)

(2)

(3) Oxygen concentration value and cell electromotive force are

(4)

(5) After the calibration is completed, the display returns to the

Press the key to perform manual span calibration.

Press the key to determine the span calibration factor.

Display the screen on the right in accordance with the key op­eration summary and press the key, the manual span
calibration screen appears.

If supplying calibration gas manually (without the auto­calibration function)
The operator shall open the span gas valve manually and adjust
the flow rate to 1.5 ± 0.5 L/min.
In the case of unit with the auto calibration function, an exter­nal solenoid valve can be driven by using the contact output
signal from the terminal block.

displayed.
Wait until the oxygen concentration is stabilized.

During the process, the oxygen concentration value and cell
electromotive force are highlighted.

screen on the right.

Displayed message

(LCD)

CALIBRATION MENU

MANUAL SPAN CAL.

MANUAL SPAN CAL.

START

MANUAL SPAN CAL.

20.61 % 000.1 mV

MANUAL SPAN CAL.

20.61 % 000.1 mV

CALIBRATION MENU

MANUAL SPAN CAL.

(6) If the operator opened the span gas valve manually, close the

valve.

(7)

Display the screen on the right in accordance with the key op­eration summary and press the
calibration screen appears.

key, the manual zero

INZ-TN2ZKMA-E

- 33 -

CALIBRATION MENU

MANUAL ZERO CAL.

(8)

(9) Oxygen concentration value and cell electromotive force are

(10)

(11) After the calibration is completed, the display returns to the

(12) If the operator open the zero gas valve manually, close the

Press the key to perform manual zero calibration.

If supplying calibration gas manually (without the auto­calibration function)
The operator shall open the span gas valve manually and adjust
the flow rate to 1.5 ± 0.5 L/min.
In the case of unit with the auto calibration function, an exter­nal solenoid valve can be driven by using the contact output
signal from the terminal block.

displayed.
Wait until the oxygen concentration is stabilized.

Press the key to determine the zero calibration factor.

During the process, the oxygen concentration value and cell
electromotive force are highlighted.

screen on the right.

valve.

How to cancel

MANUAL ZERO CAL.

START

MANUAL ZERO CAL.

2.01 % 053.9 mV

MANUAL ZERO CAL.

2.01 % 053.9 mV

CALIBRATION MENU

MANUAL ZERO CAL.

Press the



After the cancellation, be sure to close the valves of span gas and zero gas.



key to cancel the operation.

- 34 -

INZ-TN2ZKMA-E

7.3 Auto calibration (option)

Description

Calibration is performed at time intervals set in advance.



The solenoid valve is driven by contact signal to feed the standard gas for automatic calibration with



span gas and zero gas.
“CAL” is displayed on the left of the measurement screen during automatic calibration.



If the output signal hold is set, the output signal is held to the set value during calibration.



After the calibration, the hold is maintained until the time set in the measurement recovery time elaps­es.
For automatic calibration, it is necessary to set “10.2.2 Date and time for starting automatic calibra-



tion (option)”, “10.2.3 Cycle time setting of automatic calibration (option)”, “10.2.7 Calibration
gas setting”, “10.2.8 Calibration waiting setting (option)”, and “10.5.12 Setting of measurement re­covery time (maintenance hold)”.
Refer to Sections “4.2” and “4.3” for the wiring of solenoid valves.



Procedure

Operation

(example)

Key operation Description

(1)

(2)

(3)

(4)

INZ-TN2ZKMA-E

Setting the automatic calibration so that it is performed every four days from 13:00,
2015/02/25

Display the screen on the right in accordance with the key op-

Press the key.

Press the key to set the value.

eration summary and press the key.

The auto calibration valid/invalid setting screen appears.

Use the

Press the

key to select the auto calibration valid (YES).

key to set the value.

- 35 -

Displayed message

(LCD)

CALIBRATION MENU

SET AUTO CAL

SET AUTO CAL

AUTO CALIBRATION

AUTO CALIBRATION

YES NO

AUTO CALIBRATION

YES

(5) The screen on the right appears.

(6)

(7)

(8)

(9) The screen on the right appears.

(10)

Press the key.

Press the

the
The date and time for starting automatic calibration screen ap-

pears.

Use the
date and time.

(Set the date and time of the future.)
Press the

Press the

the
The cycle time setting of automatic calibration screen appears.

key.

and key to set the auto calibration starting

key.

key to display the screen on the right and press

key to set the value.

key to display the screen on the right and press

SET AUTO CAL

AUTO CALIBRATION

SET AUTO CAL

START DATE

START DATE

15/02/25 13:00

START DATE

15/02/25 13:00

SET AUTO CAL

START DATE

SET AUTO CAL

AUTO CAL. CYCLE

(11)

(12)

(13) The display returns to the screen on the right.

Press the key.

Use the
time.
Press the

and key to set the auto calibration cycle

key to set the value.

How to cancel

Press the



key to cancel the operation.

Note

Automatic calibration is not performed under the following conditions.

Warm-up is being performed.



Contact of “Prohibition of calibration” is being input.



Contact of “Heater off” is being input.



AUTO CAL. CYCLE

04d 00h

AUTO CAL. CYCLE

04d 00h

SET AUTO CAL

AUTO CAL. CYCLE

- 36 -

INZ-TN2ZKMA-E

7.4 Remote calibration

This function is available only for the version with auto-calibration.
You can perform all calibration by the contact input of the external terminal block.
To perform remote calibration, install piping and wiring for the standard gas cylinder and the solenoid valve
according to Section 4.

(1) Set one of the contact inputs DI 1 to 3 to “Remote calibration” in accordance with the following op-

eration procedure.

(2) Close the contact set to the “Remote contact” for one second or more (depending on the settings of

(17) to (19) and (20) of the terminal block).

(3) Remote calibration is started. “RCL” is displayed on the left of the display panel, which disappears

when the calibration is completed.

DI1 DI3DI2 DI COM

17 18 19 20

You can arbitrarily set the contact input functions.

You can arbitrarily set the contact inputs (17), (18), (19) and (20) of the external terminal block (see “10.5.2
Contact input setting”).
Piping and wiring for the standard gas cylinder and the solenoid valve shall be installed.

Description

You can perform all calibration by the contact input using this function.



The solenoid valve is driven by contact signal from the terminal block to feed the standard gas for



automatic calibration with span gas and zero gas.
Refer to Sections “4.2” and “4.3” for the wiring of solenoid valves.



Procedure

Operation

(example)

Key operation Description

(1)

(2)

Executes remote calibration.

Display the screen on the right in accordance with the key op­eration summary and press the key.
The contact input setting screen appears.

Press the

Press the

key several times and select one of DI 1 to DI 3.

key.

Displayed message

(LCD)

PARAMETER MENU

DIGITAL INPUT

DIGITAL INPUT

DI 

(3)

(4)

INZ-TN2ZKMA-E

Press the key.

Contact is set.

Press the

Press the

key several times and select “REMOTE CAL.”.

key to set the value.

DI 1

NONE

DI 1

REMOTE CAL.

- 37 -

(5)

Press the key.

DI 1

REMOTE CAL.

(6)

(7) Close the contact set to the “REMOTE CAL.”

The screen on the right appears.
Press the key several times and return to the measure­ment screen.

Remote calibration is performed.

How to cancel

Press the



key to cancel the operation.

Note

Automatic calibration is not performed under the following conditions.

Warm-up is being performed.



Contact of “Remote blow” is being input.



Contact of “Prohibition of calibration” is being input.



Contact of “Heater off” is being input.



DIGITAL INPUT

DI 1

12.34

Vol%

- 38 -

INZ-TN2ZKMA-E

7.5 All calibration (option)

Description

Perform sensor maintenance [sensor check (setting), sensor recovery (setting)], span and zero calibra-



tion once for each sequentially by key operation.
Actuate the solenoid valve attached to the exterior by the contact signal from the terminal block and



supply standard gases sequentially. Span and zero gas calibration are automatically performed.
If the output signal hold is set, the output signal is held to the set value during calibration. After the



calibration, the hold is maintained until the time set in the measurement waiting time elapses.
To perform sensor maintenance (sensor check, sensor recovery) during calibration, “10.4.5 Perform-



ing a manual sensor check” are required.
Note that the sensor recovery is performed if it is determined to be required by the sensor check.
Refer to Sections “4.2” and “4.3” for the wiring of solenoid valves.



Procedure

Operation

(example)

Executes all calibration.

Key operation Description

(1)

(2)

(3) The value of the concentration of oxygen and the cell electro-

(4) After the all calibration is completed, the display returns to the

Press the key to perform all calibration.

Display the screen on the right in accordance with the key op­eration summary and press the key, the all calibration
performing screen appears.

motive force are displayed while executing the all calibration.

screen on the right.

How to cancle

Press the



key to cancel the operation.

Displayed message

(LCD)

CALIBRATION MENU

ALL CALIBRATION

ALL CALIBRATION

START

ALL CALIBRATION

20.61 % 000.1 mV

CALIBRATION MENU

ALL CALIBRATION

INZ-TN2ZKMA-E

- 39 -

N

N

N

N

8. BLOWDOWN (OPTION)

In order to prevent the flow guide tube from clogging with dust contained in gas being measured, dust depos­its in the flow guide tube is removed by blowing compressed air such as instrumentation air, etc. Use the
blowdown function by one of the following three methods.

(1) Manual blowdown (“8.2”), (2) Automatic blowdown (“8.3”),



(3) Remote blowdown (“8.4”)

8.1 Preparation for blowdown

Wiring/piping check



Perform wiring and piping correctly referring to Item. “4.3”. Since high pressure is applied to the piping,
be sure to use blind-nut type joints at connections. Special care should be taken with regard to air­tightness.
Setting of blowdown time



Referring to “10.3.4 Procedure for setting blowdown time”, set blowdown time.

8.2 Manual blowdown

Description

You can perform blowdown operation once by key operation using this function.



Procedure

Operation
(example)

Key operation Description

(1)

(2)

(3) While executing, the screen on the right appears.

(4) After the calibration is completed, the display returns to the

Press the key to perform manual blowdown.

Performing manual blowdown

Display the screen on the right in accordance with the key op­eration summary and press the key, the manual blowdown
performing screen enters.

screen on the right.

Displayed message

(LCD)

BLOW DOWN MENU

MANUAL BLOW DOW

MANUAL BLOW DOW

ENTRY

MANUAL BLOW DOW

11.11 vol%

BLOW DOWN MENU

MANUAL BLOW DOW

How to cancel

Press the



key to cancel the operation.

- 40 -

INZ-TN2ZKMA-E

A

8.3 Automatic blowdown

Description

Blowdown operation is performed at time intervals set in advance.



Using contact signal from the terminal block, drive the solenoid valve and remove dust by blowing



instrumentation air, etc. into the flow guide tube with blowdown nozzle.
“BLW” is displayed on the left of the measurement screen during automatic blowdown.



If the output signal hold is set, the output signal is held to the set value before start of blowdown dur-



ing blowdown. After the calibration, the hold is maintained until the time set in the measurement wait­ing time elapses.
To perform automatic blowdown, “10.3.2 Date and time setting of automatic blowdown” and



“10.3.3 Automatic blowdown cycle setting” and “10.3.4 Procedure for setting blowdown time” are
required.

Automatic blowdown

Blowdown contact

nalog output signal

Contact output for maintenance

starting date

Closed Closed

Hold Hold

Automatic blowdown

interval

Hold

prolong

Procedure

Operation

(example)

Key operation Description

(1)

(2)

(3)

(4)

(5) The screen on the right appears.

Press the key.

Press the key.

Setting the blowdown so that it is performed for 30 seconds every 24 hours from 13:00,
08/02/25

Display the screen on the right in accordance with the key op­eration summary and press the key.

The auto blowdown valid/invalid setting screen appears.

Use the

Press the

key to select the auto blowdown valid (YES).

key to set the value.

Displayed message

(LCD)

BLOW DOWN MENU

SET AUTO BLOW

SET AUTO BLOW

AUTO BLOW

BLOW DOWN

YES NO

BLOW DOWN

YES

SET AUTO BLOW

AUTO BLOW

(6)

Press the

the
The date and time setting of automatic blowdown screen ap-

pears.

key to display the screen on the right and press

key.

SET AUTO BLOW

START DATE

INZ-TN2ZKMA-E

- 41 -

(7)

(8)

Press the key.

Use the

and key to set the auto blowdown starting

date and time.
(Set the date and time of the future.)

Press the

key to set the value.

(9) The screen on the right appears.

(10)

Press the

the

key to display the screen on the right and press

key.

The auto setting blowdown interval screen appears.

(11)

(12)

Use the

Press the

and key to set the auto blowdown interval.

key to set the value.

Press the key.

START DATE

15/02/25 13:00

START DATE

15/02/25 13:00

SET AUTO BLOW

START DATE

SET AUTO BLOW

AUTO BLOW CYCLE

AUTO BLOW CYCLE

24h 00m

AUTO BLOW CYCLE

24h 00m

(13) The screen on the right appears.

(14)

Press the

the

key to display the screen on the right and press

key.

The setting blowdown time screen appears.

(15)

(16)

Press the key.

Use the

and key to set the blowdown time.
(Common with the manual blowdown.)
Press the

key to set the value.

(17) The display returns to the screen on the right.

How to cancel

Press the



key to cancel the operation.

SET AUTO BLOW

AUTO BLOW CYCLE

SET AUTO BLOW

BLOW DOWN TIME

BLOW DOWN TIME

030 S

BLOW DOWN TIME

030 S

SET AUTO BLOW

BLOW DOWN TIME

- 42 -

INZ-TN2ZKMA-E

8.4 Remote blowdown

You can perform blowdown by the contact input of the external terminal block.
To perform remote blowdown, install piping and wiring for the supply air and the solenoid valve according
to Section 4.

(1) Set one of the contact inputs DI 1 to 3 to “Blowdown ON” in accordance with the following opera-

tion procedure.

(2) Close the contact set to the “Blowdown ON” for one second or more (depending on the settings of

(17) to (19) and (20) of the terminal block).

(3) Blowdown is started. “RBL” is displayed on the left of the display panel, which disappears when the

blowdown is completed. Blowdown continues for the time you set in “10.3.4 Procedure for setting
blowdown time”.

DI1 DI3DI2 DI COM

17 18 19 20

You can arbitrarily set the contact input functions.

You can arbitrarily set the contact inputs (17) to (19) and (20) of the terminal block (see “10.5.2 Contact
input setting”).
Piping and wiring for the supply air and the solenoid valve shall be installed.

Description

You can perform blowdown by the contact input using this function.



Actuate the solenoid valve attached to the exterior by the contact signal from the terminal block and



flow supply air sequentially. Blowdown is automatically performed.
Refer to Sections “4.2” and “4.3” for the wiring of solenoid valves.



Procedure

Operation

(example)

Key operation Description

(1)

(2)

Performing remote blowdown

Display the screen on the right in accordance with the key op­eration summary and press the key.
The contact input setting screen appears.

Press the

Press the

key several times and select one of DI 1 to DI 3.

key.

Displayed message

(LCD)

PARAMETER MENU

DIGITAL INPUT

DIGITAL INPUT

DI 1

(3)

(4)

INZ-TN2ZKMA-E

Press the key.

Contact is set.

Press the
ON”.
Press the

key several times and select “BLOW DOWN

key to set the value.

- 43 -

DI 1

NONE

DI 1

BLOW DOWN ON

(5)

Press the key.

DI 1

BLOW DOWN ON

(6)

(7)

How to cancel

Press the



The screen on the right appears.
Press the key several times and return to the measurement
screen.

Close the contact set to the “Blowdown ON.”
Blowdown is performed.

key to cancel the operation.

DIGITAL INPUT

DI 1

12.34

Vol%

- 44 -

INZ-TN2ZKMA-E

9. MAINTENANCE AND CHECK

9.1 Checking

Please regularly check the instrument and carry out maintenance work to use it always in good condition.
Check especially the following items. Perform maintenance and check every year or two.

Items to be checked Action

Zero and span calibration Perform calibration every week.

Calibration gas pressure Replace calibration gas cylinder when the primary

pressure becomes around 1 MPa.

Check for loose cable gland Check if the screw is tightened.

Daily inspection

Case packing If there are any cracks on the surface of packing,

Key sheet If damaged, replace it with new one.

Packing of cable gland If there is any cracks in the packings inside cable

Periodic inspection

If the screw is loose, tighten it.

replace it with new one.

glands, replace the packing with new one. Pay
attention to the exposed surface of packing if
there are any cracks.

9.2 Spare parts

No. Name Part number Q'ty Remarks

LCD module

1

assembly

I/O board

2

4

5

7

Case packing

Case packing

Key sheet

Packing

Packing

O-rings

3-1

3-2

6-1

6-2

Note 1: With regard to No.1 and No.2, refer to "Warranty and maintenance" in this instruction manual.
Note 2: Consult us for the replacement. Disassembly may result in an electric shock or personal injury.

*ZZPZKM2－TK4K9805C1

*ZZPZKM2－TQ502655C1

*ZZPZKM2－TK4K9807P3

*ZZPZKM2－TK7H7465P1

*ZZPZKM2－TQ402693P1

*ZZPZKM2－TQ502593P3

*ZZPZKM2－TK7M6120P1

*ZZPZKM2－TK7M6120P2

*ZZPZKM2－TK4K9799P13

1 set Includes LCD

1 set Includes electrolytic capacitor.

To order this part, type code written
on the specification nameplate is re­quired.

1 For ZKMA

1 For ZKMB

1

1 set For the cable gland used to connect

the detector.

2 Small packing for the cable gland (op-

tional) for ZKMA

2 Large packing for the cable gland (op-

tional) for ZKMA

4 These are the parts used for the case

fixing screw for ZKMB.

INZ-TN2ZKMA-E

- 45 -

9.3 Replacement of fuse

If a fuse blows, turn off the power, and replace the fuse after investigating the cause.
Open the front door and you can see the a fuse on the case.
To replace the fuse, insert a flathead screwdriver or coin into the fuse cap and turn it to the left while pressing
it in order to remove the cap and replace the fuse.
Put the cap on the fuse and turn it to the right to fix it.

For heater: ø5×20 mm 2.5 A (Example: 0213, 2.5 A, manufactured by Littelfuse)

Note: Use time-lag fuses.

- 46 -

INZ-TN2ZKMA-E

9.4 Adjustment of monitor contrast

You can adjust the monitor contrast to improve the readability.

VR1

Open the cover, and you can see the volume
knob (VR1) on the CPU board. Turn the
knob with a flathead screwdriver to adjust
the contrast.

ZKMA

ZKMB

VR1

INZ-TN2ZKMA-E

- 47 -

9.5 Troubleshooting

Phenomena Probable causes Checking methods (normal value) Remedy

No display Converter fuse blown out Check the fuse and supply voltage speci-

fication.

Indication does
not change or
slow response

Temperature
alarm contin­ues for more
than 10 min.
after power
switched ON

Automatic
calibration is
not possible

Zero and/or
span alarm

Indication too
high or too low

Unstable read­ings

Filter and/or flow guide tube
clogged

Sensor deterioration Change over between zero and span gas

Decrease in flow velocity of
exhaust gas

Break of wiring
Wrong wiring
Source voltage is too low.

Break of thermocouples Break check Replace sensor

Blown heater fuse Cable check of fuse Replace fuse

Break in detector heater Check heater resistance

Difference between calibration
gas concentration and its setting

Wrong parameters setting Check automatic calibration intervals.

The calibration is prohibited in
the contact input of the external
terminal block.

The heater is set to off at the
contact input of the external
terminal block.

Difference between calibration
gas concentration and its setting
or misconnection between zero
and span gas

Loose flange and its surround­ings Deteriorated O-rings

Detector is faulty. Check for gas leaks at calibration gas

Abnormal detector temperature Refer to check items for detector tem-

Indication difference between
dry and wet base measurement

The power supply voltage is too
high or too low.

Visual check of filter and flow guide
tube for contamination or clogging.
Check for loosen and gas leaks at piping
connections and mounting place of de­tector.

and check if 5 minutes or longer is need­ed for 90% response.

Check response to process gas after
shutting down calibration gas.
Move the direction (mounting position)
of “arrow” of the flow guide slightly.

Cable check of wiring
Wiring check
Check of supply voltage specification

50 to 55Ω for 115V, 200 to 250Ω for
220V (Excluding wiring resistance)

Check the set value for calibration gas
concentration.

Check if the calibration is not prohibited
in the contact input of the external ter­minal block.

Check if the heater is set to off at the
contact input of the external terminal
block.

Check the set value for calibration gas
concentration.

Check piping.

Check for gas leaks in detector and
mounting part of flow guide tube flange.

Check for leaks from the outside.

inlet.
Check sensor voltage (mV) for higher or
lower than other detector when flowing
zero gas. (See “6.5 Oxygen detector
standard output voltage”)

perature alarm described above.

Oxygen concentration is higher in dry
base.

Check that the supplied voltage is as
specified.

Replace fuse Check
Power supply voltage

Clean or replace filter
Tighten pipe connec­tions

Replace sensor

Increase process gas
Flow into the flow
guide tube.

Replacement
Correct wiring
Check power supply

Replace sensor

Set proper value (Re­fer to “10.2.7”)

 Set proper parame-

ters

 Set proper parame-

ters

 Correct wiring
 Set proper parame-

ters

 Correct wiring
 Set proper value

 Correct wiring

 Tighten mounting

screws

 Replace sensor
 Seal
 Tighten connectors

 Replace sensor

 Replace sensor

 Normal

 Auto-tuning

- 48 -

INZ-TN2ZKMA-E

Phenomena Probable causes Checking methods (normal value) Remedy

Disconnection
detection error

Range cannot
be switched.

Break of thermocouples
Break of sensor
Wrong wiring

“Range setting” is set in the
contact input setting.

Cable check of wiring
Wiring check

Check if “Range setting” is set in the
contact input setting.

 Replace the defec-

tive parts.

 Correct wiring
 Turn on/off the

power supply.

Cancel “Range set­ting” in the contact
input setting.

INZ-TN2ZKMA-E

- 49 -

10. SETTING AND OPERATING OF PARAMETER

10.1 Measured menu

10.1.1 Display range setting screen

Description

You can set the display range of oxygen concentration value using this function.



Settable range: Select one of the following



(1) “Range 1”: Displayed in the range set in the range setting 1.
(2) “Range 2”: Displayed in the range set in the range setting 2.

Procedure

Operation
(example)

Setting the display range to “Range 1”

Key operation Description

(1)

(2)

(3)

(4) When it is fixed, the display returns to the screen on the right.

Press the key.

Display the screen on the right in accordance with the key op­eration summary and press the key.
The display range setting screen appears.

Use the

Press the

key to select the range-1.

key to set the value.

Displayed message

MEASURE MENU

DISPLAY RANGE

DISPLAY RANGE

RANGE1 RANGE2

DISPLAY RANGE

RANGE1

MEASURE MENU

DISPLAY RANGE

Note

If “Range setting” is set in the contact input setting, you cannot change the display range on this



screen.

(LCD)

- 50 -

INZ-TN2ZKMA-E

10.1.2 Decimal point position setting screen

Description

You can set the decimal point position of full scale for oxygen concentration display using this func-



tion.
Settable range: Select one of the following.



(1) “00.00”: Displayed with two-digit integer and two decimal places.
(2) “0.000”: Displayed with one-digit integer and three decimal places.

Procedure

Operation

(example)

Setting the display of two-digit integer and two decimal places (Range 1)

Key operation Description

(1)

(2)

(3)

(4)

(5) When it is fixed, the display returns to the screen on the right.

Press the key.

Press the key.

Display the screen on the right in accordance with the key op­eration summary and press the key.

The decimal point position setting screen appears.

Use the
mal places.
Press the

key to select the two-digit integer and two deci-

key to set the value.

Note

Displayed message

(LCD)

MEASURE MENU

OUTPUT RANGE

RANGE 1

DECIMAL POINT

DECIMAL POINT

00.00

DECIMAL POINT

00.00

RANGE 1

DECIMAL POINT

If changing “0.000” to “00.00,” “25.00” is set as the full scale value.



If changing “00.00” to “0.000,” “5.000” is set as the full scale value.



INZ-TN2ZKMA-E

- 51 -

10.1.3 Full scale setting screen

Description

You can set the full scale value for display of oxygen concentration value using this function.



Settable range: If the decimal point position is set to “00.00”: 02.00 to 50.00 vol%



If the decimal point position is set to “0.000”: 2.000 to 9.000 vol%

Procedure

Operation
(example)

Setting the full scale value to 20.00% (Range-1)

Key operation Description

(1)

(2)

(3)

(4)

(5) The display returns to the screen on the right.

Press the key.

Display the screen on the right in accordance with the key op­eration summary and press the key.

Press the

the
The full scale setting screen appears.

Use the

Press the

key to display the screen on the right and press

key.

and key to set the full scale value.

key to set the value.

Displayed message

(LCD)

MEASURE MENU

OUTPUT RANGE

RANGE 1

FULL SCALE

FULL SCALE

20.00

FULL SCALE

20.00

RANGE 1

FULL SCALE

- 52 -

INZ-TN2ZKMA-E

10.1.4 Setting screen for calculation time of maximum and min­imum values appears

Description

You can set the calculation time of maximum and minimum values of oxygen concentration value



using this function.
Settable range: 0 to 240h



Procedure

Operation

(example)

Setting the calculation time of maximum and minimum values to 24 hours

Key operation Description

(1)

(2)

(3)

(4) When it is fixed, the display returns to the screen on the right.

Press the key.

Display the screen on the right in accordance with the key op­eration summary and press the key.
The setting screen for calculation time of maximum and mini-

mum values appears.

Use the
imum and minimum values.
Press the

and key to set the calculation time of max-

key to set the value.

Displayed message

(LCD)

MEASURE MENU

CALCULATE TIME

CALCULATE TIME

024 h

CALCULATE TIME

024 h

MEASURE MENU

CALCULATE TIME

INZ-TN2ZKMA-E

- 53 -

10.2 Calibration menu

10.2.1 Automatic calibration setting (option)

Description

You can set the automatic calibration to valid or invalid using this function.



If changing the automatic calibration setting from valid to invalid during automatic calibration or re-



mote calibration, the calibration is forcibly canceled.

Procedure

Operation
(example)

Setting the automatic calibration to valid

Key operation Description

(1)

(2)

(3)

(4)

(5) The display returns to the screen on the right.

Press the key.

Press the key.

Display the screen on the right in accordance with the key op­eration summary and press the key.

The auto calibration valid/invalid setting screen appears.

Use the

Press the

key to select the auto calibration valid (YES).

key to set the value.

Note

Displayed message

(LCD)

CALIBRATION MENU

SET AUTO CAL

SET AUTO CAL

AUTO CALIBRATION

AUTO CALIBRATION

YES NO

AUTO CALIBRATION

YES

SET AUTO CAL

AUTO CALIBRATION

If the time for automatic calibration comes during manual treatments (calibration, blowdown, or sen-



sor check) or remote treatments (calibration, blowdown, or heater off), the treatment being performed
is prioritized and the automatic calibration starts after the treatment is completed.
If the time for automatic calibration comes at the same time with automatic blowdown, the automatic



blowdown starts first and the automatic calibration starts after the automatic blowdown is completed.
If “Prohibition of calibration” is set in the contact input setting and the contact input is on, automatic



calibration is not performed.
If disconnection is detected (O



sensor input, O2 sensor thermocouple input, or thermocouple input

2

(combustion control: option)), or a heater temperature error or A/D saturation error occurs, automatic
calibration is not performed.
Automatic calibration is not available during warm-up operation.



- 54 -

INZ-TN2ZKMA-E

10.2.2 Date and time for starting automatic calibration (option)

Description

You can set the date and time for starting automatic calibration using this function.



Automatic calibration is performed in a specified cycle from a specified date and time.
If it is invalid, the automatic calibration does not start at a specified date and time.



Settable range: date and time in the future in the calendar



Procedure

Operation

(example)

Setting the automatic calibration so that it is performed from 13:00, 2015/02/25

Key operation Description

(1)

(2)

(3)

(4)

(5) The display returns to the screen on the right.

Press the key.

Display the screen on the right in accordance with the key op­eration summary and press the key.

Press the

the
The auto calibration starting date and time setting screen ap-

pears.

Use the
date and time.
Press the

key to display the screen on the right and press

key.

and key to set the auto calibration starting

key to set the value.

Note

Displayed message

(LCD)

CALIBRATION MENU

SET AUTO CAL

SET AUTO CAL

START DATE

START DATE

15/01/01 00:00

START DATE

15/02/25 13:00

SET AUTO CAL

START DATE

You cannot change the setting value during automatic calibration or remote calibration.



Check that “Current date and time setting” in the parameter menu is properly set.



INZ-TN2ZKMA-E

- 55 -

10.2.3 Cycle time setting of automatic calibration (option)

Description

You can set the automatic calibration cycle using this function.



The cycle starts from a specified date and time for automatic calibration.
Settable range: 00d 00h to 99d 23h (h: 00 to 23)



Procedure

Operation
(example)

Setting the automatic calibration so that it is performed every four days

Key operation Description

(1)

(2)

(3)

(4)

(5) The display returns to the screen on the right.

Press the key.

Display the screen on the right in accordance with the key op­eration summary and press the key.

Press the

the
The cycle time setting of automatic calibration appears.

Use the
date and time.
Press the

key to display the screen on the right and press

key.

and key to set the auto calibration starting

key to set the value.

Note

Displayed message

(LCD)

CALIBRATION MENU

SET AUTO CAL

SET AUTO CAL

AUTO CAL. CYCLE

AUTO CAL. CYCLE

04 d 00 h

AUTO CAL. CYCLE

04 d 00 h

SET AUTO CAL

AUTO CAL. CYCLE

You cannot change the setting value during automatic calibration or remote calibration.



- 56 -

INZ-TN2ZKMA-E

10.2.4 Performing all calibration (option)

Description

You can perform all calibration on the screen using this function.



Zero calibration is automatically performed after the span calibration.
You cannot perform “All calibration” during warming-up operation.



Procedure

Operation

(example)

Performing all calibration on the screen

Key operation Description

(1)

(2)

(3) Oxygen concentration value and cell electromotive force are

(4) After the all calibration is completed, the display returns to

Press the key to perform all calibration.

Display the screen on the right in accordance with the key
operation summary and press the key, the all calibra­tion performing screen appears.

displayed during all calibration.

the screen on the right.

How to cancel

Press the



key to cancel the operation.

Displayed message

(LCD)

CALIBRATION MENU

ALL CALIBRATION

ALL CALIBRATION

START

ALL CALIBRATION

20.61 % 000.1 mV

CALIBRATION MENU

ALL CALIBRATION

INZ-TN2ZKMA-E

- 57 -

10.2.5 Performing a manual span calibration

Description

Before starting span calibration, the operator shall supply span gas to the detector and check that the



display is stabilized.
You cannot perform manual span calibration during warming-up operation.



Procedure

Operation
(example)

Performing span calibration on the screen

Key operation Description

(1)

(2)

(3) Oxygen concentration value and cell electromotive force are

(4)

Press the key to perform manual span calibration.

Press the key to determine the span calibration factor.

Display the screen on the right in accordance with the key op­eration summary and press the key, the manual span
calibration screen appears.

If supplying calibration gas manually (without the auto­calibration function)
The operator shall open the span gas valve manually and adjust
the flow rate to 1.5 ± 0.5 L/min.

If your detector has the auto-calibration function, you can acti­vate the external solenoid valve using the contact output signal
at the terminal block.

displayed.
Wait until the oxygen concentration is stabilized.

During the process, the oxygen concentration value and cell
electromotive force are highlighted.

Displayed message

(LCD)

CALIBRATION MENU

MANUAL SPAN CAL.

MANUAL SPAN CAL.

START

MANUAL SPAN CAL.

20.61 % 000.1 mV

MANUAL SPAN CAL.

20.61 % 000.1 mV

(5) After the calibration is completed, the display returns to the

screen on the right.

(6) If the operator opened the span gas valve manually, close the

valve.

How to cancel

Press the



After the cancellation, be sure to close the valves of span gas.



key to cancel the operation.

CALIBRATION MENU

MANUAL SPAN CAL.

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INZ-TN2ZKMA-E

10.2.6 Performing a manual zero calibration

Description

Before starting zero calibration, the operator shall supply zero gas to the detector and check that the



display is stabilized.
You cannot perform manual zero calibration during warming-up operation.



Procedure

Operation

(example)

Performing zero calibration on the screen

Key operation Description

(1)

(2)

(3) Oxygen concentration value and cell electromotive force are

(4)

(5) After the calibration is completed, the display returns to the

Press the key to perform manual zero calibration.

Press the key to determine the zero calibration factor.

Display the screen on the right in accordance with the key op­eration summary and press the key, the manual zero
calibration screen appears.

If supplying calibration gas manually (without the auto­calibration function)
The operator shall open the zero gas valve manually and adjust
the flow rate to 1.5 ± 0.5 L/min.

If your detector has the auto-calibration function, you can acti­vate the external solenoid valve using the contact output signal
at the terminal block.

displayed.
Wait until the oxygen concentration is stabilized.

During the process, the oxygen concentration value and cell
electromotive force are highlighted.

screen on the right.

Displayed message

(LCD)

CALIBRATION MENU

MANUAL ZERO CAL.

MANUAL ZERO CAL.

START

MANUAL ZERO CAL.

2.01 % 053.9 mV

MANUAL ZERO CAL.

2.01 % 053.9 mV

CALIBRATION MENU

MANUAL ZERO CAL.

(6) The operator shall close the zero gas valve manually.

How to cancel

Press the



After the cancellation, be sure to close the valves of zero gas.



key to cancel the operation.

INZ-TN2ZKMA-E

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10.2.7 Calibration gas setting

Description

Set calibration gas concentration (span/zero calibration gas concentrations).



Use the calibration gas concentration 1 for the range 1, and the calibration gas concentration 2 for the
range 2.
Use normal air (atmosphere) as a span calibration gas and set its concentration to 20.600% O



Settable range: Span calibration gas 00.010 to 50.000 %O



Zero calibration gas 00.010 to 25.000 %O2/N2

Procedure

Operation
(example)

Setting the span/zero calibration gas concentrations (Range 1)

2/N2

2/N2

.

Key operation Description

(1)

(2) The set content is displayed now.

(3)

(4)

(5) The display returns to the screen on the right.

Display the screen on the right in accordance with the key op­eration summary and press the key.

Use the
centrations.
Press the

The set content is displayed.
Press the key.

and key to change the calibration gas con-

key to set the value.

Note

Displayed message

(LCD)

CALIBRATION MENU

CAL. GAS (RANGE 1)

SPAN ZERO

20.600% 02.000%

SPAN ZERO

20.600% 02.000%

SPAN ZERO

20.600% 02.000%

CALIBRATION MENU

CAL. GAS (RANGE 1)

You cannot change the setting value during automatic calibration or remote calibration.



Set with span calibration gas concentrations ≥ zero calibration gas concentrations.



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INZ-TN2ZKMA-E

10.2.8 Calibration waiting setting (option)

Description

Set the waiting time from supply of calibration gas to start of calibration.



(Set the time so that the calibration gas becomes stable before the calibration.)
Settable range: 10 to 999sec.



Procedure

Operation

(example)

Setting the waiting time before the start of calibration to 20 seconds

Key operation Description

(1)

(2)

(3)

(4) The display returns to the screen on the right.

Press the key.

Display the screen on the right in accordance with the key
operation summary and press the key.

The currently set content is displayed.
Use the

Press the

and key to change the wait time.

key to set the value.

Note

You cannot change the setting value during automatic calibration or remote calibration.



Displayed message

(LCD)

CALIBRATION MENU

CAL. WAIT TIME

CAL. WAIT TIME

020 S

CAL. WAIT TIME

020 S

CALIBRATION MENU

CAL. WAIT TIME

INZ-TN2ZKMA-E

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10.2.9 Calibration error clear

Description

You can clear the errors occurred during calibration using this function.



If an error occurs during calibration, an error display (Er4, Er5) and abnormal contact output (close)
continues until the next calibration is properly completed.
Clear the error display on the measurement screen and open the abnormal contact output.



Error log information is not cleared.



Procedure

Operation
(example)

Clearing a calibration error

Key operation Description

(1)

(2)

(3)

(4) The display returns to the screen on the right.

Press the key.

Press the key.

Display the screen on the right in accordance with the key op­eration summary and press the key.
The calibration error clear screen appears.

(The calibration error is not cleared yet.)

(Calibration error cleared.)

Displayed message

(LCD)

CALIBRATION MENU

CAL. ERROR CLEAR

CAL. ERROR CLEAR

YES

CAL. ERROR CLEAR

YES?

CALIBRATION MENU

CAL. ERROR CLEAR

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INZ-TN2ZKMA-E

10.2.10 Operation setting screen of calibration range

Description

During calibration, you can select single or common range for the calibration factor using this func-



tion.
Settable range: Select one of the following.



(1) “Range interlock”: Performs calibration of the range that is currently displayed

and sets the calibration factors of the other ranges to the same
value as above.

(2) “Display range”: Performs calibration of the range that is currently displayed.

Procedure

Operation

(example)

Setting the calibration range to range interlock

Key operation Description

(1)

(2)

(3)

(4) When it is fixed, the display returns to the screen on the right.

Press the key.

Display the screen on the right in accordance with the key op­eration summary and press the key.
The operation setting screen of calibration range appears.

Use the

Press the

key to select the range interlock.

key to set the value.

Displayed message

(LCD)

CALIBRATION MENU

CURRENT

ABOUT CAL. RANGE

BOTH CURRENT

ABOUT CAL. RANG

BOTH

CALIBRATION MENU

CURRENT

INZ-TN2ZKMA-E

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10.3 Blowdown menu (option)

10.3.1 Automatic blowdown setting

Description

You can set the automatic blowdown to valid or invalid using this function.



If changing the automatic blowdown setting from valid to invalid during automatic blowdown, the



blowdown is forcibly canceled.

Procedure

Operation
(example)

Setting the automatic blowdown to valid

Key operation Description

(1)

(2)

(3)

(4)

(5) The display returns to the screen on the right.

Press the key.

Press the key.

Display the screen on the right in accordance with the key op­eration summary and press the key.

The auto blowdown valid/invalid setting screen appears.

Use the

Press the

key to select the auto blowdown valid (YES).

key to set the value.

Note

Displayed message

(LCD)

BLOW DOWN MENU

SET AUTO BLOW

SET AUTO BLOW

BLOW DOWN

BLOW DOWN

YES NO

BLOW DOWN

YES

SET AUTO BLOW

BLOW DOWN

If the time for automatic calibration comes during manual treatments (calibration, blowdown, sensor



check, or sensor recovery) or remote treatments (calibration, blowdown, or heater off), the treatment
being performed is prioritized and the automatic calibration starts after the treatment is completed.
If the time for automatic blowdown comes at the same time with automatic calibration, the automatic



blowdown starts first.
If disconnection is detected (O



sensor input, O2 sensor thermocouple input, or thermocouple input

2

(combustion control: option)), or heater temperature error or A/D saturation error occurs, automatic
calibration is not performed.

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INZ-TN2ZKMA-E

10.3.2 Date and time setting of automatic blowdown

Description

You can set the date and time for starting automatic blowdown using this function.



Automatic blowdown is performed in a specified cycle from a specified date and time.
If it is invalid, automatic blowdown does not start at a specified date and time.



Settable range: date and time in the future in the calendar



Procedure

Operation

(example)

Setting the date and time for starting automatic blowdown to 13:00, 2015/02/25

Key operation Description

(1)

(2)

(3)

(4)

(5) The display returns to the screen on the right.

Press the key.

Press the key.

Display the screen on the right in accordance with the key op­eration summary and press the key.

The date and time setting of automatic blowdown screen ap­pears.

Use the
starting date and time screen.
Press the

and key to set the automatic blowdown

key to set the value.

Note

Displayed message

(LCD)

BLOW DOWN MENU

SET AUTO BLOW

SET AUTO BLOW

START DATE

START DATE

15/02/25 13:00

START DATE

15/02/25 13:00

SET AUTO BLOW

START DATE

You cannot change the setting value during automatic blowdown or remote blowdown.



Check that “Current date and time setting” in the parameter menu is properly set.



INZ-TN2ZKMA-E

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10.3.3 Automatic blowdown cycle setting

Description

You can set the automatic blowdown cycle using this function.



The cycle starts from a specified date and time for automatic blowdown.
Settable range: 00h 00m to 99h 59m (m: 00 to 59)



Procedure

Operation
(example)

Setting automatic blowdown cycle to 24 hours.

Key operation Description

(1)

(2)

(3)

(4)

(5) The display returns to the screen on the right.

Press the key.

Display the screen on the right in accordance with the key op­eration summary and press the key.

Press the

the
The auto blowdown cycle setting screen appears.

Use the

Press the

key to display the screen on the right and press

key.

and key to select the auto blowdown cycle.

key to set the value.

Note

Displayed message

(LCD)

BLOW DOWN MENU

SET AUTO BLOW

SET AUTO BLOW

AUTO BLOW CYCLE

AUTO BLOW CYCLE

24 h 00 m

AUTO BLOW CYCLE

24 h 00 m

SET AUTO BLOW

AUTO BLOW CYCLE

You cannot change the setting value during automatic blowdown or remote blowdown.



Set the blowdown cycle value larger than the blowdown time.



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INZ-TN2ZKMA-E

10.3.4 Procedure for setting blowdown time

Description

You can set the blowdown time using this function (common with manual blow down).



Settable range: 0 to 999 sec.



Procedure

Operation

(example)

Setting blowdown time to 30 seconds.

Key operation Description

(1)

(2)

(3)

(4)

(5) The display returns to the screen on the right.

Press the key.

Display the screen on the right in accordance with the key op­eration summary and press the key.

Press the

the
The procedure for setting blowdown time screen appears.

Use the

Press the

key to display the screen on the right and press

key.

and key to set the blowdown time.

key to set the value.

Note

Displayed message

(LCD)

BLOW DOWN MENU

SET AUTO BLOW

SET AUTO BLOW

BLOW DOWN TIME

BLOW DOWN TIME

030 s

BLOW DOWN TIME

030 s

SET AUTO BLOW

BLOW DOWN TIME

You cannot change the setting value during automatic blowdown or remote blowdown.



Set the blowdown cycle value smaller than the blowdown time.



INZ-TN2ZKMA-E

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N

N

N

N

10.3.5 Perfoming manual blowdown

Description

You can perform blowdown on the screen using this function.



If you perform remote control (calibration, blowdown, turning off the heater) during manual blow-



down, remote control is prioritized and manual blowdown is stopped.

Procedure

Operation
(example)

Performing blowdown on the screen

Key operation Description

(1)

(2)

(3) Oxygen concentration value is displayed during manual blow-

(4) After the calibration is completed, the display returns to the

Press the key to perform manual blowdown.

Display the screen on the right in accordance with the key op­eration summary and press the key, the manual blowdown
performing screen appears.

down.

screen on the right.

How to cancel

Press the



key to cancel the operation.

Displayed message

(LCD)

BLOW DOWN MENU

MANUAL BLOW DOW

MANUAL BLOW DOW

START

MANUAL BLOW DOW

11.11 vol%

BLOW DOWN MENU

MANUAL BLOW DOW

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INZ-TN2ZKMA-E

10.4 Maintenance menu

10.4.1 Error log display

Description

You can display an error log on the screen using this function.



A latest piece of error information is displayed first.



The maximum of 12 pieces of error information are saved.
Press the
The latest piece of error information is displayed next to the oldest piece of error information.
The oldest piece of error information is overwritten by a new one.



Procedure

Operation

(example)

key to display the older pieces of error information.

Displaying an error log on the screen

Key operation Description

(1)

(2)

(3)

(4)

(5)

(6)

Use the key to select the error log screen.

Press the key, the latest error log appears.

Press the key to display the previous piece of error log

Press the key, the display returns to the screen on the

Press the key again to return to the screen on the right.

Display the screen on the right in accordance with the key op­eration summary and press the key.

information.

right.

Displayed message

(LCD)

MAINTE MENU

ERROR LOG

ERROR LOG

DISP CLEAR

YY/MM/DD HH:MM



YY/MM/DD HH:MM



ERROR LOG

DISP CLEAR

MAINTE MENU

ERROR LOG

INZ-TN2ZKMA-E

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Error logs

Display message Status

Sensorline Error

TC-line Error

Sub temp. Error

Warm-up Error

Cell temp. Error

Span gas Error

Zero gas Error

Span cal. Error

Zero cal. Error

Sensor Error,
A/D data Error

Sensor line disconnection of the zirconia oxygen sensor was detected.

Temperature control line disconnection of the zirconia oxygen sensor was detected.

Line disconnection of the thermocouple for combustion control was detected.

Warm-up was not completed within the warm-up monitoring time (45 minutes).
 Warm-up is properly completed if the heater temperature of the zirconia oxygen sen-

sor becomes the control temperature (800°C) ± 1°C and stable for one minute.

Heater temperature exceeds the specified range (800°C ± 70°C)
 The concentration of the calibration span gas being supplied is not stable.

(In a discrimination treatment of stability, the error of ± 0.2% or more compared to the
value in the previous treatment continues.)

 The concentration of the calibration zero gas being supplied is not stable.

(In a discrimination treatment of stability, the error of ± 0.2% or more compared to the
value in the previous treatment continues.)

Span calibration failed. (Calibration factor could not be determined.)

Zero calibration failed. (Calibration factor could not be determined.)

An error was detected in the A/D conversion of oxygen concentration value of the zirco­nia oxygen sensor. (260 mV or more, –50 mV or less)

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INZ-TN2ZKMA-E

10.4.2 Clearing error logs

Description

You can clear all error logs saved using this function.



Procedure

Operation

(example)

Clearing all error logs saved

Key operation Description

(1)

(2)

(3)

(4)

(5) After the processing is completed, the display changes to the

(6)

Use the key to select the error log clear screen.

Press the key to clearing error logs.

The screen is displayed again to check. Press the key to

Press the key again to return to the screen on the right.

Display the screen on the right in accordance with the key op­eration summary and press the key.

(However, it has not been deleted yet.)

clear all the error logs.

menu screen.

Displayed message

(LCD)

MAINTE MENU

ERROR LOG

ERROR LOG

DISP CLEAR

CLEAR ERROR LOG

YES

CLEAR ERROR LOG

YES?

ERROR LOG

DISP CLEAR

MAINTE MENU

ERROR LOG

INZ-TN2ZKMA-E

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10.4.3 Alarm log display

Description

You can display alarm logs on the screen using this function.



A latest piece of alarm information is displayed first.



The maximum of 12 pieces of alarm information are saved.
Press the
The latest piece of alarm information is displayed next to the oldest piece of alarm information.
The oldest piece of alarm information is overwritten by a new one.



Procedure

Operation
(example)

key to display the older pieces of alarm information.

Displaying alarm logs on the screen

Key operation Description

(1)

(2)

(3)

(4)

(5)

(6)

Use the key to select the alarm log display screen.

Press the key, the latest alarm log appears.

Press the key to display the previous piece of alarm log

Press the key, the display returns to the screen on the

Press the key again to return to the screen on the right.

Display the screen on the right in accordance with the key op­eration summary and press the key.

information.

right.

Displayed message

(LCD)

MAINTE MENU

ALARM LOG

ALARM LOG

DISP CLEAR

YY/MM/DD HH:MM



YY/MM/DD HH:MM



ALARM LOG

DISP CLEAR

MAINTE MENU

ALARM LOG

Alarm logs

Display message Status

High alarm

Low alarm

Hi-High alarm

Low-Low alarm

Oxygen concentration value exceeded a specified upper limit.

Oxygen concentration value exceeded a specified lower limit.

Oxygen concentration value exceeded a specified Hi-High limit.

Oxygen concentration value exceeded a specified Low-Low limit.

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INZ-TN2ZKMA-E

10.4.4 Clearing alarm logs

Description

You can clear all alarm logs using this function.



Procedure

Operation

(example)

Clearing all alarm logs saved

Key operation Description

(1)

(2)

(3)

(4)

(5) After the processing is completed, the display changes to the

(6)

Use the key to select the alarm log clear screen.

Press the key to perform clearing alarm logs.

The screen is displayed again to check. Press the key to

Press the key again to return to the screen on the right.

Display the screen on the right in accordance with the key op­eration summary and press the key.

(However, it has not been deleted yet.)

clear all the alarm logs.

menu screen.

Displayed message

(LCD)

MAINTE MENU

ALARM LOG

ALARM LOG

DISP CLEAR

CLEAR ALARM LOG

YES

CLEAR ALARM LOG

YES?

ALARM LOG

DISP CLEAR

MAINTE MENU

ALARM LOG

INZ-TN2ZKMA-E

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10.4.5 Performing a manual sensor check

Description

Manually supply atmospheric air or air from cylinder to the detector in order to measure the electro-



motive force of the sensor.

Proce-

dure

Operation
(example)

Key operation Description Displayed message

Performing a sensor check on the screen

(1)

(2) Supplying atmospheric air or air from cylinder manually (1.5 ±

(3)

(4)

(5) When the check is completed, manually stop supplying air to

Press the key to perform sensor check.

Press the key to return to the screen on the right.

Display the screen on the right in accordance with the key op­eration summary and press the key, the manual sensor
check performing screen appears.

0.5 L/min).

During the process, electromotive force of the sensor is dis­played.

the detector.

MAINTE MENU

SENSOR CHECK

SENSOR CHECK

START

SENSOR CHECK

SENSOR CHECK

START

Note

If the electromotive force of the sensor is out of the range from -5.0 mV through +5.0 mV, it is rec-



ommended to replace the sensor.

000.2 mV

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INZ-TN2ZKMA-E

10.4.6 Maintenance mode setting

Description

You can set the maintenance mode to valid or invalid with this function.



If the maintenance mode is set to valid, the analog output signal is held at the set value (see “10.5.10



Hold value setting.”) and the contact output for maintenance of the external contact is on. The data
portion of the measurement screen flickers.

Procedure

Operation

(example)

Setting the maintenance mode to valid

Key operation Description

(1)

(2)

(3)

(4) The display returns to the screen on the right.

Press the key.

Display the screen on the right in accordance with the key op­eration summary and press the key, the maintenance
mode setting screen appears.

Use the

Press the

key to select the maintenance mode valid (YES).

key to set the value.

Displayed message

(LCD)

MAINTE MENU

MAINTENANCE MODE

MAINTENANCE MODE

YES NO

MAINTENANCE MODE

YES

MAINTE MENU

MAINTENANCE MODE

Note

If an error occurs while the maintenance mode is enabled, error handling is prioritized.



If the analog output hold function (error hold) is enabled, the analog output signal is held at the value



set at the hold value setting (error hold).
The data portion of the measurement screen flickers and is highlighted.



INZ-TN2ZKMA-E

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10.4.7 Password setting

Description

You can set a password for switching the “Key lock function” valid /invalid, which is to prevent unau-



thorized people from making various setting or operating the unit manually (modification, etc.)
Note: Refer to “Setting of key lock” Paragraph (“10.5.16”).
When you set the “new password” you desire, the screen transits to the password authentication



screen automatically.
After you input the “old password" in the password authentication screen, the new password will be
registered.
The factory-set password is “0000”.



An authorized person should manage the set password for remembrance’ sake.
Settable value: 4 digits from 0 to 9



Procedure

Operation
(example)

Setting to change from old password “9999” to new password “0000”

Key operation Description

(1)

(2)

Display the screen on the right in accordance with the key
operation summary and press the

Use the key and the key to input the new

password.

(3)

(4)

Press the key.

Use the key and the key to input the old

password.

(5)

(6)

The new password is displayed by pressing the key.

Press the key to go back to the screen on the right.

key.

Displayed message

(LCD)

MAINTE MENU

PASSWORD

NEW PASSWORD

0123

OLD PASSWORD

0000

OLD PASSWORD

9999

NEW PASSWORD

0123

MAINTE MENU

PASSWORD

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INZ-TN2ZKMA-E

10.4.8 PID auto tuning

Description

Heater temperature of the detector is PID controlled. This "PID auto-tuning" function optimizes each



value of P (proportion), I (integration) and D (derivation) for the environment where the unit is in­stalled.
Note: Each value of P, I, and D has been set at factory. If temperature is not properly controlled, per­form PID auto tuning.
Measured value and analog output become unstable during PID auto tuning because the controlled



temperature goes up and down.
You can hold the analog output value during PID auto tuning, because it is a part of maintenance (Re-



fer to 10.5.9 “Hold treatment setting (maintenance hold)”).
You cannot use PID auto tuning with auto calibration or automatic blowdown at the same time.



Procedure

Operation

(example)

Execute PID auto tuning from the screen

Key operation Description

(1)

Display the screen on the right in accordance with the key
operation summary and press the

key to display the

PID AUTO TUNING START screen.

(2)

Press the key to start PID auto tuning.

(3)

Temperature to be displayed changes during PID auto
tuning.

(4) When PID auto tuning is finished automatically, the dis-

play returns to the screen on the right.

How to cancel

Press the



key to cancel PID auto tuning.

If you cancel PID auto tuning, each value of P, I and D is to be the value before tuning.

Displayed message

(LCD)

MAINTE MENU

PID AUTO TUNING

PID AUTO TUNING

START

PID AUTO TUNING



MAINTE MENU

PID AUTO TUNING

°C

INZ-TN2ZKMA-E

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10.5 Parameter menu

10.5.1 Current date and time setting

Description

You can set a current date and time for the unit using this function.



Settable range: date and time in the future in the calendar



Procedure

Operation
(example)

Setting the current date and time to 13:00, 2015/02/25

Key operation Description

(1)

(2)

(3) The display returns to the screen on the right.

Display the screen on the right in accordance with the key op­eration summary and press the key.

Use the

Press the

and key to set the date and time.

key to set the value.

Displayed message

(LCD)

PARAMETER MENU

DATE SET

DATE SET

15/02/25 13:00

PARAMETER MENU

DATE SET

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INZ-TN2ZKMA-E

10.5.2 Contact input setting

Description

You can set the functions for the contact inputs 1 to 3 using this function.



Settable range: Select one of the following



(1) [NONE] : Performs no treatment by contact input.
(2) [BLOW DOWN ON] : Performs blowdown by contact input.

(Switch OFF to ON to perform blowdown.)

(3) [HEATER OFF] : Turn off the heater by contact input.

(OFF／ON:Heater ON／Heater OFF)

(4) [PROHIBIT CAL.] : Sets if calibration is prohibited or valid by contact in-

put.
(OFF/ON: Calibration is valid/prohibited.)

(5) [REMOTE CAL.] : Performs all calibration by contact input.

(Switch OFF to ON to perform calibration.)

(6) [REMOTE HOLD] : Holds the AO by contact input.

(OFF/ON: not held/held)

(7) [CALCULATE REST] : Resets maximum and minimum calculations of O

contact input.
(Switch OFF to ON to perform calibration.)

(8) [OUTPUT RANGE] : Switches the range by contact input.

(OFF／ON: Range-1/Range-2)

Note) The functions other than “NONE” cannot be set for multiple contacts.

by

2

Procedure

Operation

(example)

Key operation Description

(1)

(2)

(3)

(4)

(5)

Setting the blowdown function for the contact input 1

Display the screen on the right in accordance with the key op-

Use the key to select the function for contact input 1.

Press the key.

eration summary and press the key.

Use the

Press the
(Also follow this procedure for the contact inputs 2 and 3.)

The item selected is highlighted.
Press the key to set the value.

key to select the contact input 1 setting screen.

key to set the value.

Displayed message

(LCD)

PARAMETER MENU

DIGITAL INPUT

DIGITAL INPUT

DI 1

DI 1

NONE

DI 1

BLOW DOWN ON

DI 1

BLOW DOWN ON

(6) The display returns to the screen on the right.

INZ-TN2ZKMA-E

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DIGITAL INPUT

DI 1

10.5.3 Selection of alarm contact output

Description

You can set the alarm conditions for alarm contact output using this function.



Settable range: Select one of the following.



(1) [ALARM NONE] : Alarm contact output is not performed.
(2) [HIGH ALARM] : Alarm contact output is performed when an high limit

alarm occurs.

(3) [LOW ALARM] : Alarm contact output is performed when an lower limit

alarm occurs.

(4) [HH ALARM] : Alarm contact output is performed when an HH limit alarm

occurs.

(5) [LL ALARM] : Alarm contact output is performed when an LL limit alarm

occurs.

(6) [H/L ALARM] : Alarm contact output is performed when an high or lower

limit alarm occurs.

(7) [HH/LL ALARM] : Alarm contact output is performed when an HH or LL limit

alarm occurs.

Procedure

Operation
(example)

Setting the lower limit alarm function for alarm contact output

Key operation Description

(1)

(2) The selection of alarm contact output setting screen appears.

(3)

(4) The display returns to the screen on the right.

Display the screen on the right in accordance with the key op­eration summary and press the key.

Use the

Press the

key to select the low alarm.

key to set the value.

Displayed message

(LCD)

PARAMETER MENU

DO ALARM SET

DO ALARM SET

ALARM NONE

DO ALARM SET

LOW ALARM

PARAMETER MENU

DO ALARM SET

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INZ-TN2ZKMA-E

10.5.4 High limit setting of oxygen concentration

Description

You can set the high limit of oxygen concentration using this function.



Use the oxygen concentration alarm 1 for the range 1, and the oxygen concentration alarm 2 for the
range 2.
Settable range: 0.001 to 55.000 vol%



Procedure

Operation

(example)

Setting the high limit of oxygen concentration to “50.000 vol%” (Range 1)

Key operation Description

(1)

(2)

(3)

(4)

(5)

(6) The display returns to the screen on the right.

Press the key.

Press the key.

Display the screen on the right in accordance with the key op­eration summary and press the key.

Use the

value setting screen, and press the

Use the
high limit value.
Press the

key to select the oxygen concentration high limit

key.

and key to set the oxygen concentration

key to set the value.

Displayed message

(LCD)

PARAMETER MENU

OXYGEN ALARM 1

OXYGEN ALARM 1

HIGH ALARM

HIGH ALARM

50.000 vol%

HIGH ALARM

50.000 vol%

OXYGEN ALARM 1

HIGH ALARM

PARAMETER MENU

OXYGEN ALARM 1

Note

A setting error occurs if the following condition is not satisfied:



“HH limit of oxygen concentration” ≥ “high limit of oxygen concentration” ≥ “Lower limit of oxygen
concentration” ≥ “LL limit of oxygen concentration”

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10.5.5 Lower limit setting of oxygen concentration

Description

You can set the lower limit of oxygen concentration using this function.



Use the oxygen concentration alarm 1 for the range 1, and the oxygen concentration alarm 2 for the
range 2.
Settable range: 0.001 to 55.000 vol%



Procedure

Operation
(example)

Setting the lower limit of oxygen concentration to “00.020 vol%” (Range 1)

Key operation Description

(1)

(2)

(3)

(4)

(5)

(6) The display returns to the screen on the right.

Press the key.

Press the key.

Display the screen on the right in accordance with the key op­eration summary and press the key.

Use the

limit value setting screen, and press the

Use the
lower limit value.
Press the

key to select the oxygen concentration lower

and key to set the oxygen concentration

key to set the value.

key.

Displayed message

(LCD)

PARAMETER MENU

OXYGEN ALARM 1

OXYGEN ALARM 1

LOW ALARM

LOW ALARM

00.020 vol%

LOW ALARM

00.020 vol%

OXYGEN ALARM 1

LOW ALARM

PARAMETER MENU

OXYGEN ALARM 1

Note

A setting error occurs if the following condition is not satisfied:



“HH limit of oxygen concentration” ≥ “high limit of oxygen concentration” ≥ “Lower limit of oxygen
concentration” ≥ “LL limit of oxygen concentration”

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INZ-TN2ZKMA-E

10.5.6 HH limit setting of oxygen concentration

Description

You can set the HH limit of oxygen concentration using this function.



Use the oxygen concentration alarm 1 for the range 1, and the oxygen concentration alarm 2 for the
range 2.
Settable range: 0.001 to 55.000 vol%



Procedure

Operation

(example)

Setting the HH limit of oxygen concentration to “55.000 vol%” (Range 1)

Key operation Description

(1)

(2)

(3)

(4)

(5)

(6) The display returns to the screen on the right.

Press the key.

Press the key.

Display the screen on the right in accordance with the key op­eration summary and press the key.

Use the

value setting screen, and press the

Use the
HH limit value.
Press the

key to select the oxygen concentration HH limit

key.

and key to set the oxygen concentration

key to set the value.

Displayed message

(LCD)

PARAMETER MENU

OXYGEN ALARM 1

OXYGEN ALARM 1

H-HIGH ALARM

H-HIGH ALARM

55.000 vol%

H-HIGH ALARM

55.000 vol%

OXYGEN ALARM 1

H-HIGH ALARM

PARAMETER MENU

OXYGEN ALARM 1

Note

A setting error occurs if the following condition is not satisfied:



“HH limit of oxygen concentration” ≥ “High limit of oxygen concentration” ≥ “Lower limit of oxygen
concentration” ≥ “Low-Low limit of oxygen concentration”

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10.5.7 LL limit setting of oxygen concentration

Description

You can set the LL limit of oxygen concentration using this function.



Use the oxygen concentration alarm 1 for the range 1, and the oxygen concentration alarm 2 for the
range 2.
Settable range: 0.001 to 55.000 vol%



Procedure

Operation
(example)

Setting the Low-Low limit of oxygen concentration to “00.010 vol%” (Range 1)

Key operation Description

(1)

(2)

(3)

(4)

(5)

(6) The display returns to the screen on the right.

Press the key.

Press the key.

Display the screen on the right in accordance with the key op­eration summary and press the key.

Use the

value setting screen, and press the

Use the
limit value.
Press the

key to select the oxygen concentration LL limit

key.

and key to set the oxygen concentration LL

key to set the value.

Displayed message

(LCD)

PARAMETER MENU

OXYGEN ALARM 1

OXYGEN ALARM 1

L-LOW ALARM

L-LOW ALARM

00.010 vol%

L-LOW ALARM

00.010 vol%

OXYGEN ALARM 1

L-LOW ALARM

PARAMETER MENU

OXYGEN ALARM 1

Note

A setting error occurs if the following condition is not satisfied:



“HH limit of oxygen concentration” ≥ “High limit of oxygen concentration” ≥ “Lower limit of oxygen
concentration” ≥ “LL limit of oxygen concentration”

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INZ-TN2ZKMA-E

10.5.8 Hysteresis Setting

Description

You can set the hysteresis for alarm condition of oxygen concentration.



Use the oxygen concentration alarm 1 for the range 1, and the oxygen concentration alarm 2 for the
range 2.
Perform the setting using the percentage (%) of the range compared to the full scale.
Settable range: 0 to 20 %



Procedure

Operation

(example)

Setting the hysteresis for alarm condition of oxygen concentration to “20%” (Range 1)

Key operation Description

(1)

(2)

(3)

(4)

(5)

(6) The display returns to the screen on the right.

Press the key.

Press the key.

Display the screen on the right in accordance with the key op­eration summary and press the key.

key to select the hysteresis setting screen, and

key.

and key to set the hysteresis.

key to set the value.

Use the

press the

Use the

Press the

Displayed message

(LCD)

PARAMETER MENU

OXYGEN ALARM 1

OXYGEN ALARM 1

HYSTERESIS

HYSTERESIS

20 %

HYSTERESIS

20 %

OXYGEN ALARM 1

HYSTERESIS

PARAMETER MENU

OXYGEN ALARM 1

INZ-TN2ZKMA-E

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Hysteresis:

If the value fluctuates around the condition value, there is a possibility that alarms occur frequent­ly. When determining alarms, set a hysteresis width for the condition in order to prevent chattering.
For alarm check, set the percentage (%) of the range compared to the full scale as hysteresis width
(see the figure below).
This is common among “HH limit value,” “High limit value,” “Lower limit value,” and “LL limit
value.”

HH limit value

High limit value

Oxygen concentration value

Lower limit value

LL limit value

HH limit judgment

High limit judgment

Lower limit judgment

LL limit judgment

HH / LL limit judgment

Hysteresis

High / lower limit judgment

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INZ-TN2ZKMA-E

10.5.9 Hold treatment setting (maintenance hold)

Description

You can set if the analog output hold function is valid or invalid using this function.



If the analog output hold function is valid, the value set for the analog output (see “10.5.10 Hold



value setting (maintenance hold)”) is held at the value set for analog output when the following
treatment is performed.

・

Calibration (Auto, All, Manual, Remote)

・

Blowdown (Auto, Manual, Remote)

・

Sensor diagnosis, PID auto tuning

・

While the maintenance mode is set to “Valid.”

Procedure

Operation

(example)

Setting the analog output hold function to valid

Key operation Description

(1)

(2)

(3)

(4)

(5) The display returns to the screen on the right.

Press the key.

Press the key.

Display the screen on the right in accordance with the key op­eration summary and press the key.

The analog output hold setting screen appears.

Use the

Press the

key to select the output hold valid (YES).

key to set the value.

Note

Displayed message

(LCD)

PARAMETER MENU

AO HOLD (MAINTE)

AO HOLD (MAINTE)

OUTPUT HOLD

OUTPUT HOLD

YES NO

OUTPUT HOLD

YES

AO HOLD (MAINTE)

OUTPUT HOLD

If an error occurs while the analog output hold function (error hold) is set to “Valid,” error hold pro-



cessing is prioritized.
Analog output signal during warm-up is held at 0% (4 mA/0 V).



INZ-TN2ZKMA-E

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10.5.10 Hold value setting (maintenance hold)

Description

Using this function, you can set (select) the output value of analog output signal when the analog out-



put hold function (maintenance hold) is enabled.
If the maintenance mode is set to “Valid,” analog output signal is held at the value set in this proce-



dure.
Settable range: Select one of the following.



(1) [0%] : Held at 0% (4 mA/0 V)..
(2) [100%] : Held at 100% (20 mA/1 V).
(3) [Last value] : Held at the value immediately before the value for analog hold.
(4) [Setting value] : Held at the value set as the “10.5.11 Setting of hold setting val-

ue (maintenance hold)”.

Procedure

Operation
(example)

Setting the output value of analog output hold to “0%”

Key operation Description

(1)

(2)

(3)

(4)

(5) The display returns to the screen on the right.

Press the key.

Display the screen on the right in accordance with the key op­eration summary and press the key.

Press the

the
The analog output hold value setting screen appears.

Use the

Press the

key to display the screen on the right and press

key.

key to select the hold value.

key to set the value.

Displayed message

(LCD)

PARAMETER MENU

AO HOLD (MAINTE)

AO HOLD (MAINTE)

OUTPUT SELECT

OUTPUT SELECT

0%

OUTPUT SELECT

0%

AO HOLD (MAINTE)

OUTPUT SELECT

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INZ-TN2ZKMA-E

10.5.11 Setting of hold setting value (maintenance hold)

Description

Using this function, you can set the output value of analog output signal to an arbitrary value when the



analog output hold function (maintenance hold) is enabled.
This function is to set the output value of an analog output at a percentage (%) of the full-scale value,
when “setting value” is selected and specified on the “10.5.10 Hold value setting (maintenance
hold).”
Settable range: 0 to 100 %



Procedure

Operation

(example)

Setting the output value of analog output hold to “000%”

Key operation Description

(1)

(2)

(3)

(4)

(5) The display returns to the screen on the right.

Press the key.

Display the screen on the right in accordance with the key op­eration summary and press the key.

Press the

the
The hold setting value setting screen appears.

Use the

Press the

key to display the screen on the right and press

key.

and key to set the hold value.

key to set the value.

Displayed message

(LCD)

PARAMETER MENU

AO HOLD (MAINTE)

AO HOLD (MAINTE)

HOLD VALUE

HOLD VALUE

000 %

HOLD VALUE

000 %

AO HOLD (MAINTE)

HOLD VALUE

INZ-TN2ZKMA-E

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