Chino IM Series, IRMA51 Series, IRMA52 Series Instructions Manual

INST.No.INE-475-P1CE Software Version 1.00

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IM series
Infrared multiple-constituents analyzer

Mirror type multiple-constituents meter/
Detector Unit

Model: IRMA51

IRMA52

Store this manual in a readily accessible
location for future reference.

This manual should be provided to the end user.

INST.No.INE-475-P1CE Software Version 1.00

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¡ Regarding this manual

(1) This manual should be provided to the end user.
(2) Read this manual carefully to gain a thorough understanding of how to operate this product

before starting operation.

(3) This manual describes the functions and maintenance of this product. Store it in a readily

accessible location for future reference.

(4) If you have unclear points or need technical assistance, please contact your sales agent of

CHINO Corporation.

Notices

1. The contents of this manual are subject to change without notice.

2. Every effort has been made to ensure that the details of this manual are accurate. However,
should any errors be found or importance information be omitted, please contact your
nearest agent of CHINO Corporation.

3. Under absolutely no circumstances may the contents of this manual, in part or in whole, be
transcribed or copied without permission.

Preface

Thank you for purchasing the IM series infrared multiple-constituents analyzer
[Mirror type multiple-constituents meter/detector unit IRMA51, IRMA52].
Read this manual carefully to ensure that you use this product correctly and
safely.

INST.No.INE-475-P1CE Software Version 1.00

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Be sure to read the following safety instructions before attempting to install, operate or
store this product.

1. Working conditions and environment

1) This product is installed using the mounting screw holes (four M8 screw holes) on its
top surface. Refer to [3. Installation] and fix the detector unit firmly.

2) Do not place this product on a desk and the like. This product may fall, causing serious
personal injury and serious damage to this product.

3) Do not use this product in a location where volatile, corrosive or flammable gas is

present, or in a location where moisture, chemical or seawater is splashed.

2. Symbols used in this manual

The following symbols are used depending on important degrees of warnings/cautions to
operate this product safely and to avoid malfunctions or unexpected situation.

Important

degree

Symbols Contents

1

This symbol is indicated with a title for an explanation
with .

2

Indicates important information that must be observed to avoid
the risk of fire or electric shock or other dangers that may result
in serious personal injury or death, or damage to this product.

3

Indicates important information that must be observed to avoid
the risk of personal injury or malfunctions of this product.

4

Indicates supplementary information that the operator is
recommended to understand.

5

Indicates supplementary information or a reference to an
operation.

Remarks

Reference

Caution

Warning

Warning

！

Important Operational Instructions

！

INST.No.INE-475-P1CE Software Version 1.00

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Please observe the following safety precautions fully to use this product correctly. In addition,
please read this manual carefully and store it in a readily accessible location for future reference.

The mark indicates actions that are prohibited during an operation.

Warning (May cause death or serious personal injury)

Do not operate this product in a location where flammable or volatile gas is present.

The use of this product in such environment may result in the risk of explosion.

If this product emits any smoke, abnormal noise or unusual odor, immediately turn off power.

Do not continue to use this product as it may result in the risk of fire or electric shock. Turn
off the power source to this product and contact your nearest sales agent of CHINO
Corporation. Do not repair this product yourself as it may be dangerous.

Never touch the internal parts of this product.

If you touch the inside of this product, it may result in personal injury by electric circuits or a
moving part
Even when you open the case of this product for maintenance works, never touch the internal
parts.

Do not attempt to repair or modify this product.

Repairing or modification must be carried out by service personnel authorized by CHINO
Corporation.
If you repair or modify this product yourself, it may not fulfill this product’s functions, or it
may result in the risk of electric shock or damage to this product.

Do not touch, with wet hands, the power terminals or plugs of the power cord.

If you touch, with wet hands, the power terminals or plugs of the power cord, it may result in
the risk of electric shock.

If you notice something suspicious, immediately turn off power.

If the temperature of the power cord or other cable is high abnormally, turn off the power
source to this product immediately and contact your nearest sales agent of CHINO
Corporation.

Confirm the grounding.

To avoid the risk of electric shock, before supplying the power to this product, make sure that the
power terminals and the protective ground terminal have been wired correctly and reliably.

Caution (May cause personal injury or property damage ）

Confirm the specifications (Model code) of this product.

Before using this product, check that the model code shown in the serial number plate matches your
order.

Separate precautionary safety measures should be provided before using this product.

When this product is used in equipment that needs security measures, provide separate safety
measures with the equipment before using this product, responding to phenomena resulting from
erroneous operations or malfunctions of this product or malfunctions of related instruments.

Use crimp type lugs for termination of wires.

To avoid dropping-out or short-circuit of wires, use crimp type lugs for their termination.

Confirm the power to this product.

Before supplying the power to this product, make sure that the power voltage matches the rated
voltage to this product and that the power terminals and the protective ground terminal have been
wired correctly and reliably.

Do not continue to use this product remaining malfunctioned.

Do not continue to use this product remaining malfunctioned as it may result in the risk of fire
or electric shock. Contact your nearest sales agent of CHINO Corporation for repairing.

Comply with the descriptions in this manual.

Comply with the descriptions and handling instructions in this manual to ensure that you use this
product correctly and safely.
Failure to comply with the descriptions and instructions may result in damage to or functional decline
of this product or damage to the equipment.

!

Warnings and Cautions

INST.No.INE-475-P1CE Software Version 1.00

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Contents

Preface
Important operational instructions
W arnings and cauti ons

1. Introduction ·························································· 1

1.1 General··························································1

1.2 Configuration················································1

2. Models and accessories ········································2

2.1 Models··························································2

2.1.1 Detector unit ·················································2

2.1.2 Accessories··················································· 2

2.2 Attachments··················································2

3. Installation····························································· 3

3.1 Setting dipswitches·······································3

3.1.1 Connecting this detector unit to

the operator interface/display unit ········ 3

3.1.2 Connecting this detector unit to

a personal computer······························3

3.2 Mounting the air-purge hood IR-WEA·········4

3.2.1 Mounting the hood on this detector unit·······4

3.2.2 Adjusting the hood length····························· 4

3.2.3 Purge air························································4

3.3 Cooling this detector unit

(water-cooling or air-cooling)··············· 4

3.4 Installing this detector unit ···························5

3.5 Cautions before installation ························6

3.5.1 Vibration or shock·········································6

3.5.2 Magnetic disturbances··································6

3.5.3 Working temperature and humidity··············6

3.5.4 Sight path······················································6

3.5.5 Installation (for objects of

powders or granular substances)··············6

3.5.6 Installation (for objects in sheet

suc h a s pa p e r s , etc . )································6

4. Connections··························································· 7

4.1 Laying cables················································7

4.2 Single-detector-unit connection···················· 7

4.3 Multiple-detector-units connection···············8

4.3.1 Relaying boxes used ·····································8

4.3.2 Relaying boxes not used·······························9

5. Names and functions·········································· 10

5.1 Names and functions of

detector unit components···················· 10

5.2 Names and functions of data display parts· 11

5.3 Terminal portion ········································· 11

6. Operation ·····························································12

6.1 Confirmation before operation ··················· 12

6.2 Setting detector unit numbers·····················12

6.3 Setting calibration curve data····················· 13

6.3.1 Data for setting ··········································· 13

6.3.1-1) List of setting data··································· 13

6.3.1-2) Function of setting data··························· 14

6.3.2 Procedure for setting··································· 15

6.3.3 Correcting calibration curves ····················· 15

6.4 Setting operating conditions······················· 16

6.4.1 Data for setting ··········································· 16

6.4.1-1 Description of setting data························18

6.4.2 Procedure for setting operating conditions· 20

6.4.3 Setting data in the engineering mode ········· 20

6.5 Setting calibration curve number of
each constituent number····················· 21

6.5.1 Setting constituent number························· 21

6.5.2 Setting calibration curve number················ 21

6.6 Calibration·················································· 22

6.6.1 Absorbance display mode settings ············· 22

6.6.2 Calibration·················································· 22

6.7 Setting output limit values of

calibration curves································ 23

6.7.1 Data for setting limit values of

calibration curves································ 23

6.7.2 Procedure for setting data for output limit

values of calibration curves················24

6.7.2-1 Setting the calibration curve numbers (CH)··24

6.7.2-2 Enabling/disabling the output

limit processing (LM)························· 24

6.7.2-3 Setting a low limit absorbance value (XL)

and a low limit measured value (YL)·············24

6.7.2-4 Setting a high limit absorbance value (XH)

and a high limit measured value (YH)···········24

6.7.2-5 Setting output limit values to

oth e r cal i b r ati o n c u r v e nu m b ers·············24

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INST.No.INE-475-P1CE Software Version 1.00

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Contents

7. Procedure for creating calibration curves·······25

7.1 Sample preparation:
For constituent of moisture etc. ··········25

7.1.1 Powders or granular substances··················25

7.1.2 Papers (sheet materials)······························25

7.2 Sample measurement:
For constituent of moisture etc. ··········26

7.2.1 Sample measurement for
powders or granular substances ··········26

7.2.2 Sample measurement for papers

(sheet materials)································27

7.3 Sample preparation: For constituent of

thickness or coating-thickness ··········28

7.4 Sample measurement: For constituent of
thickness or coating-thickness··········· 29

8. Sample temperature correction function ······· 30

8.1 General························································30

8.2 Wiring this detector unit·····························30

8.3 Enabling/disabling the sample temperature
correction function······························31

8.3.1 Setting with this detector unit·····················31

8.3.2 Setting with the operator interface/
display unit ·········································· 31

8.4 Setting a sample temperature scaling ·········31

8.4.1 Setting with the detector unit······················31

8.4.2 Setting with the operator interface/
display unit ·········································31

8.5 Setting sample temperature·························32

8.6 Setting calibration curve data ·····················32

8.7 Measurement ··············································33

8.8 Displaying sample temperature Ts··············33

8.8.1 Displaying with this detector unit···············33

8.8.2 Displaying with the operator interface/

display unit········································· 33

9. Inspection and maintenance······························34

9.1 Periodical inspection···································34

9.2 Self-diagnosis function·······························34

9.3 Measures against troubles not included
with self-diagnosis······························35

9.3.1 No display on this detector unit appears·····35

9.3.2 Measured value remains unchanged···········35

9.3.3 Measured value fluctuates ··························35

9.3.4 Measured value is slightly higher or
lower than the actual value·················35

9.4 Maintenance parts······································· 36

9.4.1 List of maintenance parts···························· 36

9.4.2 Replacing a lamp········································ 36

9.4.3 Replacing a motor······································· 37

9.4.4 Replacing a power board···························· 38

9.4.5 Replacing a fuse ········································· 39

9.5 RAM clearing············································· 39

9.5.1 RAM clearing············································· 39

10. Specifications ·····················································40

10.1 Detector unit:
IRMA51, IRMA52 ······ 40

10.2 Attachments················································41

10.2.1 Power unit IR-WEP··································· 41

10.2.2 Connection cable IR-WERP······················41

10.2.3 Air purge hood IR-WEA···························· 41

10.2.4 Outpu t c he cke r pl ate
IR-WEB (For IRMA51)
IR-WEB3 (For IRMA52)········· 41

10.2.5 Installation adaptor IR-WED1··················· 41

10.2.6 Air-cooling box IR-WEX ·························· 42

10.2.7 Relaying box IR-WEE ···························· 42

11.Outside dimensions ············································43

11.1 Detector unit

IRMA51, IRMA52········ 43

11.2 Attachments················································ 44

11.2.1 Power unit IR-WEP··································· 44

11.2.2 Connection cable IR-WERT······················ 44

11.2.3 Air purge hood IR-WEA···························· 45

11.2.4 Output checker plate

IR-WEB (For IRMA51)
IR-WEB3 (For IRMA52)······· 45

11.2.5 Installation adaptor IR-WED1···················46

11.2.6 Air-cooling box IR-WEX··························· 47

11.2.7 Relaying box IR-WEE·····························48

11.2.7-1) IR-WEE1:Steel······································48

11.2.7-2) IR-WEE2:SUS304································ 48

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INST.No.INE-475-P1CE Software Version 1.00

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1.1 General

The IM series infrared multiple-constituents analyzer [Mirror type multiple-constituents meter/detector
unit IRMA51/IRMA52] is a reflective type non-contact on-line multiple-constituents meter
using the principles of infrared absorption by constituent value of moisture, thickness or coating-thickness.
This multiple-constituents meter is configured with a detector unit, an operator interface/display unit and
accessories. The detector unit is provided with 99 built-in calibration curves and outputs a linear analog
signal proportional to constituent value of moisture, thickness or coating-thickness of a sampled material.
As the stand alone detector unit provides function keys, a data display and a digital signal for
communication, it can be operated on its own or with a personal computer. The operator interface/display
unit can communicate with up to nine (9) detector units, and displays the constituent value of moisture,
thickness or coating-thickness digitally as well as accessing to various parameters of the detector unit.
Accessories including cables, connecting the detector unit to the operator interface/display unit or to the
power unit, the air-purge hood for shielding all extraneous light and for air-purging to keep the measuring
window and the sight path clean, and the output checker plate for your own calibration are available.
This manual describes about the detector unit and accessories.
The instruction manual is separately available for the operator interface/display unit.

1.2 Configuration

IM

SERIES

1. Introduction

Detector unit
IRMA51, 52

Communication output
Analog output

Analog output

24V DC

RS-485

Connection cable
IR-WERP

Power unit IR-WEP
(Supplied as an
attachment)

Operator interface
/display unit
IRGMEG2

Air-purge hood
IR-WEA

Output checker plate
IR-WEB

INST.No.INE-475-P1CE Software Version 1.00

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2.1 Models

2.1.1 Detector unit

IRMA51

Model

51: Multi-constituents (NIR)
52: Multi-constituents (Thin-film, Infrared)

Number of wavelength

: 2 to 0 (Designate 2 to 10)

Number of constituent

: 1 to 4 (Designate 1 to 4)

Communication interface *1

S: RS-485 (standard)
L: LAN (option)

(*1) To be specified

In case of connecting to IRGMEG2 (IM
series Infrared multiple-constituent analyzer
operator interface/Display unit) it is RS-485
communications.

Special specifications

Blank: Standard
1: For small diameter
2: Dust laying
3: Special gain

4: P polarized light

2.1.2 Accessories

Name Model

Cable IR-WERP

Air-purge hood IR-WEA

Output checker plate IR-WEB (For IRMA51)

IR-WEB3 (For IRMA52)
Installation adapter IR-WED1
Air-cooling box IR-WEX
Relaying box IR-WEE

2.2 Attachments

Name Quantity Remarks

Power unit 1 set IR-WEP (Omron S82K-05024)

Fuse 2 pieces

10A Ø5X20mm

(Littelfuse 217010)
Flathead screwdriver 1 piece For connection to the terminal board
Hexagon wrench
(3mm width across flats)

1 piece

For removing/attaching the terminal cover or the

data display cover
Hexagon wrench
(4mm width across flats)

1 piece For removing/attaching the air-purge hood

Metal cable gland 2 pieces MS-SC13.5 (LAPP)
Ferrite core 2 pieces MSF10KEX (Morimiya)
Instruction manual 1 copy This document
Instruction manual for
communications

1 copy

Separate manual “IM series IRMA/IR-GMEG2

Communications”

2. Models and accessories

EN61326+A1+A2
Emission: class A
Immunity: Annex A Table A.1

[Conformance to CE-marking]

1. Use the exclusive power supply
IR-WEP

2. The connection cable length is up

to 30m in indoors.

INST.No.INE-475-P1CE Software Version 1.00

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3.1 Setting dipswitches

3.1.1 Connecting this detector unit to the operator interface/display unit

It is not required to change the settings of the internal dipswitches of this detector unit.



3.1.2 Connecting this detector unit to a personal computer

Setting the dipswitch 2 in this detector unit is required.
(1) Loosen four pieces of the M4 hexagon socket cap screws fixing the data display cover.
(2) The data display cover is connected with internal components by cables. Remove the data

display cover carefully not to damage to the cables.

(3) Set No.3 of the dipswitch 2 to ON (upper side).

Warning

！

(*) Do not change the setting of the dipswitch 1.

Set the internal dipswitches before settingthe detector unit.

The above has been set as the default settings at shipment.

Make sure to turn off the power source to this unit before removing the data display
cover.

Remarks

Reference

Caution

3. Installation (Refer to [5. Names and functions].)

IM

SERIES

ON

OFF

ON

OFF

1234

1234 1234 1234

［For connecting the detector to the operator

interface/display unit (IRGMEG2)

(default settings at shipment)］

Dipswitch 2

Dipswitch 1

［For connecting the detector to a

personal computer］

Dipswitch 2 Dipswitch 1(*)

Dipswitch 2
No.3

Remove these four bolts.

Data display cover

INST.No.INE-475-P1CE Software Version 1.00

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IM

SERIES

3.2 Mounting the air-purge hood IR-WEA

The air-purge hood is used to shield against the extraneous light, including electric lamps, flames and direct
sunlight, onto the measuring area. In addition, it is used to clear water droplets, dust, smoke and steam from the
sight path between this detector unit and the measuring area. The hood length is adjustable.

3.2.1 Mounting the hood on this detector unit

Position 4 pieces of hexagon cap screws of the air-purge
hood with the screw holes of the air-purge fixing flange of
this detector unit and then tighten the screws with the
hexagon wrench (4mm width across flats) to fix the hood.

3.2.2 Adjusting the hood length

Loosen the hood length adjustment ring by turning
counterclockwise and adjust the hood length. After the
length is adjusted, turn the ring clockwise until tight to fix
the hood.

3.2.3 Purge air

When the air-purging is required, supply dry air, not
containing oil, dust, etc., from a purge air inlet. Use a nylon
tube of φ6mm in outer diameter and φ4mm in inner
diameter for connecting to the purge air inlet.
The air-purge inlet is PL6-01M (Nihon Pisco).
Purge air flow: 5 to 200Nℓ/min
Purge air pressure: 200kPa (2kgf/cm2) or lower

3.3 Cooling this detector unit (water-cooling or air-cooling)

The inlet and outlet for cooling are provided on the side of this detector unit. Let the purified cooling water flow
through the inlet and outlet. The recommended water volume is about 0.5 to 1Nl/min and the maximum pressure
is 200kPa (2kgf/cm2) or lower.
In the environment where the cooling water can not be used, this detector unit can be cooled by feeding cooling
air through the inlet and outlet. When the cooling air is shared with the purge air, connect the air outlet of this
detector unit and the purge air inlet of the air-purge hood with a tube.

The recommended air flow in the case is about 50 to 200Nl/min.

3. Installation (Refer to [5. Names and functions].)

IM

SERIES

Detector unit

Ø86

Ø100

31

Max. 300 ± 3 to Min. 222 ± 3

Purge air inlet (Nihon Pisco PC8-02)
Connection: Outer diameter Ø8
Inner diameter Ø6

By a nylon tube, etc.

Hood length
adjustment ring

Four M5 hexagon cap screws
(For fixing the air-purge hood)

Detector unit

Air inlet

Air piping
(Nylon tube)

Inlet/outlet for cooling
(For cooling the detector
unit: R1/8)

Air-purge hood

Caution

It is recommended that this detector unit is usually cooled with water or air to ensure its
reliability. When this detector unit is used in ambient environments higher that 45ºC, be sure
to cool it down with water or air. In addition, monitor constantly if the supply of the cooling
water or cooling air is adequate.

INST.No.INE-475-P1CE Software Version 1.00

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IM

SERIES

(Ø25)

IM

SERIES

測定距離（Ｌ）

< Standard type >< Small diameter type>

3.4 Installing this detector unit

Four pieces of the mounting screw holes (M8, 11mm in depth) are provided on the top surface of
this detector unit. Fix this detector unit to a mounting plate or alternatives with four M8 bolts. The

external views and mounting dimensions are shown in the following figure.

(1) For the IRMA51 and IRMA52, place this detector unit with the distance of 300mm

from the measuring surface. (This detector unit can be placed from 200 to 400mm.)

(2) The target spot can be confirmed by the visible light irradiated from this detector unit to the

measuring surface.

(3) Prepare a mounting plate in accordance with the conditions at an installation place. Decide the

dimensions of the mounting plate in consideration of the space for wiring, etc.

Relation of distance and target area

3. Installation (Refer to [5. Names and functions].)

Cable gland

(25)

133

52

260

130

120

10

120

65

Inlet/outlet for cooling

2-R1/8

Mounting screw hole
4-M8, depth 11

8

70

120

17



Distance
L (mm)

Target
area (mm)

Distance

L (mm)

Target
area (mm)



200

□30

200

□30



300

□50

300

□30



400

□70

400

□40



Distance

(

L

)

Unit: mm

INST.No.INE-475-P1CE Software Version 1.00

-6-

3.5 Cautions before installation

3.5.1 Vibration or shock

Use this detector unit in a location with minimal vibration or shock. If it is forced to use this detector unit in a
location where the mounting plate is subject to vibration or is not stable, separate the mounting plate from the
vibration source or take measures against vibration by inserting a vibration proof rubber sheet between this
detector unit and the mounting plate or other measures.

3.5.2 Magnetic disturbances

This detector unit is designed to withstand magnetic disturbances. However, install it as far away from induction
heating oscillators or power lines as possible.

3.5.3 Working temperature and humidity

The working temperature of 10 to 30°C is optimal for this detector unit. When this detector unit is used in
ambient environments higher than 45°C, be sure to cool it down by water or air. When the ambient temperature
of the detector unit is lower than 10

o

C, prevent condensation from forming on the cover glass.

The low working humidity is preferable. In the high humid environment, condensation may form on the cover
glass by water steam and result in measuring errors.

3.5.4 Sight path

Use this detector unit in a location where water droplets, dust, smoke and steam are not contained in the sight
path between this detector unit and the measuring area. If these cannot be prevented from being contained and
their effects are not eliminated, mount the air-purge hood on this detector unit or use effective alternatives to
provide a clear sight path to the measuring area.
The dc light like the natural light onto the measuring area will not cause any disturbances in measurements, but
incorrect measurements are produced by the ac light including electric lamps and flames or direct sunlight. In

such cases, shield against the disturbance light to prevent it from irradiating directly onto the measuring area.

3.5.5 Installation (for objects of powders or granular substances)

When this detector unit is installed for on-line measurements, select such place as a hopper outlet or a place just
after the change of conveyor belts where there is little difference between the surface and the interior of
measuring objects. If such a place cannot be selected, measure the objects by facing the interior to the surface
by using a baffle plate as shown below.

3.5.6 Installation (for objects in sheet such as papers, etc. )

Tilt this detector unit by 15° from the vertical surface as shown in the figure.




3. Installation (Refer to [5. Names and functions].)

I

M

S

E

R

I

E

S

1

5

°

[For objects of powder or granular substances]

[For objects in sheet such as paper, etc.]

300mm

Paper surface

IM

SERIES

Measuring object

Conveyor belt

Baffle plate

300mm

INST.No.INE-471-P1CE Software Version 1.00

-7-

4.1 Laying cables

For laying cables, be careful of the following points.
(1) Separate cables from induction heating
oscillators or power lines.
(2) Keep cables not to get water- or oil-stained.
(3) Don’t bend cables extremely or apply any

excessive force to them.

(4) For a permanent layout, protect cables with

conduits, etc.

4.2 Single-detector-unit connection

The internal terminal board is accessible by removing the terminal board cover of the detector unit.
Lead in cables through the upper cable glands, and connect them to respective terminals.
Lead in the exclusive cable IR-WERP (φ10mm outer diameter) through the cable gland 1.

Lead in a signal cable through the cable grand 2.

Warning

Make sure to use the signal cable with the outer diameter of φ7.0 to 12.5mm.

For avoiding the risk of electric shock, make sure to turn off the power source to
this detector unit before wiring to the power terminals.

Use cables suiting to the applicable outer diameter of the cable gland; otherwise
waterproofing of the detector unit may deteriorate. Tighten the cable glands with
the nuts and fix the terminal board cover securely after wiring.

Reference

Caution

P+ P-

OUT+ OUT-

SA SB SG DI

COM

DO

COM

IN+ IN-

24VDC

4-20mADC RS -485

DIGITALIN

DIGITALOUT

4- 20mADC

P+ P-

OUT+ OUT -

SA SB SGDI

COM

DO

COM

IN+IN-

24VDC

4-2 0mAD C

RS-485

DIGITAL IN DIGI TALOUT

4-20mADC

-V

+V

OUTPUT

DC 24V2. 1A

DC ON
DC LOW

V.ADJ

INPUT50/60Hz
AC100-240V 1.3A

Operator
interface/display unit,
personal computer or
sequencer
communication
out

put

Recorde

r

, etc.

Analog output: 4-20mA DC

Cable glands

• Outer diameter of applicable
cables

(ø7.0 to ø12.5mm)

Cable
(IR-WERP)

Communication output :RS-485

Power unit
(IR-WEP)

P-

(Blue)

Power supply
100-120V AC
200-240V AC

Protective grounding

Contact input
Contact output
Correction input

P+

(Red)

G

(Green)

G (Green)

P+

(

Red

)

P- (Blue)

S

A

(Black)

SB (White)

SG (Brown)

！

4. Connections

For conformance to CE
(1) Change 2 pieces of the resin

cable glands (standard) to the
supplied metal cable glands.

(2) Attach the supplied ferrite

cores to cables. You are
required to attach one ferrite
core to one cable at a place as
close to the cable gland.

Caution

INST.No.INE-471-P1CE Software Version 1.00

-8-

4.3 Multiple-detector-units connection

By using the operator interface/display unit, you can connect the detector unit up to 9 sets.

Two connection systems are available. One is for utilizing the relaying box (IR-WEE) and the other
is without using it

4.3.1 Relaying boxes used

！

For either connecting method, before connecting to the operator
interface/display unit or before turning on the power to the operator
interface/display unit, set the detector unit numbers not to overlap them each
other.
Refer to [6.2 Setting detector unit numbers] for the details.

！

4. Connections

Caution

For wiring to the relaying box, refer to the separate manual for the relaying box.

Caution

SERIES

IM

SERIES

IM

SERIES

IM

Cable
IR-WERP *

Detector unit
IRMA

Relaying box
IR-WEE1 or IR-WEE2
(The power unit IR-WEP is
built in.

)

2-conductor twisted
cable (with shield)

Operator interface/display unit

IRGMEG2

Line converter

Personal compute

r

100-240V AC

2-conductor twisted
cable (with shield)

2-conductor twisted
cable (with shield)

Cable
IR-WERP *

Cable
IR-WERP *

24V DC (Note)

Remarks

(Note): 24V DC at CE marking (In case of using IRGMEG2V)

(*): The connection cable should be indoors and its length should be up to 30m.

INST.No.INE-471-P1CE Software Version 1.00

-9-

4.3.2 Relaying boxes not used

！

4. Connections

SERIES

IM

SERIES

IM

-V +V

OUTPUT

DC24V 2.1A

DCON

DCLOW

V.ADJ

INPUT50/60Hz
AC100-240V1.3A

-V +V

OUTPUT

DC24V 2.1A

DCON
DCLOW

V.ADJ

INPUT50/60Hz
AC100-240V1.3A

SERIES

IM

-V +V

OUTPUT

DC24V 2.1A

DCON

DCLOW

V.ADJ

INPUT50/60Hz
AC100-240V1.3A

100-240V AC

Connect the power wires of P+ (red), P- (blue), and G (green
external shield) of the exclusive cable IR-WERP to the
power unit.
Connect the signal wires of SA (black), SB (white) and SG
(brown internal shield) to the 2-conductor twisted cable (with
shield

)

.

Connect the signal wires of SA (black), SB (white) and SG
(brown internal shield) of the exclusive cable I R-WERP and
the wires of SA, SB and SG of the 2-conductor twisted cable
(with shield) to respective terminals of this detector unit.
(For the signal wire of the exclusive cable, take off the rod
shaped tip on its top, strip the cover and then insert them to the
terminal together with the twisted cable.

Power unit
IR-WEP

Power unit
IR-WEP

Power unit
IR-WEP

Line converte

r

Detector unit
IRMA

Cable
IR-WERP *

2-conductor twisted cable
(with shield)

Cable
IR-WERP *

Cable
IR-WERP *

Operator
interface/display unit
IRGMEG2

Personal compute

r

2-conductor twisted cable
(with shield)

2-conductor twisted cable
(with shield)

24V DC
(Note)

Remarks

(Note): 24V DC at CE marking (In case of using IRGMEG2V)

(*): The connection cable should be indoors and its length should be up to 30m.

INST.No.INE-471-P1CE Software Version 1.00

-10-

5.1 Names and functions of detector unit components

Names Functions

(1) Detector unit mounting

screw holes

Four M8 screw holes (11mm in depth) for fixing this detector unit to a
mounting plate, etc.

(2) Data display

Displays a calibration curve number, a measured value, etc.

(3) Measuring part

The optical assembly, the detector element and the electric circuits are built in.

(4) Terminal board cover

It is fixed with four M4 hexagon socket cap scre ws and can be removed for
writing. The terminal board and the fuse are built in. The serial number plate
showing the model number is pas ted on the lower side.

(5) Date display cover

It is fixed with four M4 hexagon socket cap screws. The lamp, the motor and
the power board, which are consumables, are built in. For the replacement of
these parts, refer to [9. Inspection and maintenance 9.4.2-9.4.4].

(6) Air-purge hood

mounting flange

This flange with four M5 screw holes is for mounting the air-purge hood.

(7) Measurement window

It is for irradiating and receiving light.

(8) Cable gland 1

It is for leading in a cable. The outer diameter of its applicable cable is φ8.5 to

10.5mm. Ordinary this cable gland is sealed by a rubber. Take off the rubber for
leading in a cable. The exclusive cable IR-WERP is lead in through this cable
gland.

(9) Cable gland 2

It is for leading in a signal cable. The outer diameter of its applicable cable is
φ8.5 to 10.5mm. Ordinary this cable gland is sealed by a rubber. Take off the
rubber for leading in a cable.

(10) Fuse

The fuse (10A in capacity) is fitted on the fuse holder.

(11) Terminal board

This internal terminal board for wiring of connection cables is accessible by
opening this terminal board cover.

(12) Serial number plate

Two serial number plates indicating the model number and the serial number of
this detector unit are pasted on the inside and outside of this detector unit.

(13) Inlet/outlet for cooling

These inlet and outlet are for water or air used to cool this detector unit. The
nominal diameter of the inlet and outlet is R1/8.

5

. Names and Functions

！

IM

SERIES

IRMA51615
MA03YA001

IRMA5161S
MA03YA001

P+ P -

OUT+ OUT-

SA SBSG DI

COMDOCOM IN+ IN-

24VDC

4-20 mADC

RS-485

DIGITAL IN

DIG IT ALOUT 4 -2 0mA DC

CH

DATA

SEL

CH/

・

ENT

MADEIN JAPAN

(4) Terminal
board cover

(1) Detector unit mounting screw hole

(2) Data display

(3) Measuring part

(5) Data display cover

(6) Air-purge hood mounting flange

(7) Measuring window

(12) Serial No. plate

(outside)

(8) Cable gland 1

(9) Cable gland 2

(10) Fuse

(11) Terminal board

(12) Serial No. plate

(

inside

)

(13) Inlet/outlet for cooling

INST.No.INE-471-P1CE Software Version 1.00

-11-

5.2 Names and functions of data display parts

Names Functions

(1) CH display

Displays a calibration curve number in the measurement mode or a setting
data name in the setting mode.

(2 ) Data display

Displays a measured value in the measurement mode or a setting data in the
setting mode.

(3 ) Function keys

SEL  For entering into the setting mode or switching setting screens
CH/・ F or setting a calibration curve number in the measurement mode or

entering a decimal point in the setting mode; When the key is pressed

again, the decimal point disappears.
For entering a setting data in the setting mode or changing the digit of a
setting data
For changing a setting data in the setting mode

For changing a setting data in the setting mode

ENT For storing a setting data in the setting mode

5.3 Terminal portion

The mounting direction of the cable gland is selectable in the following two kinds. Make sure to use
the blind cap to cover the place not mounting the cable gland.
(1) Vertical direction of a cable: Default direction at shipment
(2) Horizontal direction of a cable: It is effective when there is no space above this detector unit.

5

. Names and Functions

IM

SERIES

CH

DATA

SEL

CH/

・

ENT

MADE IN JAPAN

(1) CH display (2) Data display

(3) Function keys

Cable gland

Blind cap

Cable gland

Blind cap

(1) Cable – Vertical direction

(2) Cable – Horizontal direction

INST.No.INE-475-P1CE Software Version 1.00

-12-

6.1 Confirmation before operation

Check the following two points before turning on the power.

1) Have the dipswitches been set? (Refer to [3.1 Setting dipswitches].)

2) Are all of connections correct? (Refer to [4. Connections])

6.2 Setting detector unit number

Detector unit numbers are for identifying each detector unit in the multiple-detector connections.
Up to nine (9) detector units can be connected. Set the detector unit numbers before connecting to
the operator interface/display unit.

1) Enter into the operation condition setting mode “ t ”by
pressing SEL key and ENT key simultaneously for 2
seconds.

2) Press SEL key 4 times to display “Hn” in the CH display. 

3) Press key. A numeric blinks for entering a detector unit

number.

4) Change the numeric by key, key or key.

Press key to increase the numeric.
Press key to decrease the numeric.

Press key to shift the blinking digit.

5) Press ENT key. The numeric stops blinking and the
detector unit number is stored.

6) Press SEL key for 2 seconds. The mode returns to the
measurement mode.

CH

DATA

t0. 0

CH

DATA

Hn 1

Blinkin

g

Detector unit number setting mode

CH

DATA

Hn 4

Detector unit number

The settings shown in the next paragraph can also be executed via the operator
interface/display unit (sold separately).
Refer to the se

p

arate manual for the operator interface/display unit.

6. Operation

The default number of this detector unit at shipment is “1”.
When this detector unit is used with a number other than 1, set the detector unit
number b

y

following procedure.

Reference

Reference

Caution

[Analog output in case of using Model“IRGMEG2”]

1. The analogue output of IRGMEG2 is 2 outputs of OUT1, OUT2.
(However the analogue output of IRGMEG2V is 1 output of OUT1 only.)

2. By reference to [3.5 Analog output and alarm output] (in separate manual of
"IM series Infrared multiple-constituent analyzer operator interface/Display
unit”), set the detector unit number that you want to output the analog output.

INST.No.INE-475-P1CE Software Version 1.00

-13-

6.3 Setting calibration curve data

The output characteristics of this detector unit depend upon measuring objects. It may also change according to
the process conditions or the measuring conditions of samples.
Accordingly, for accurate moisture measurements, it is required to perform beforehand sample tests of each
object and obtain a relationship (This is called as the calibration curve.) between the moisture constituent
(%H2O) obtained by a drying method or other measuring methods and the absorbance “x” measured by this
detector unit. Also, for accurate thickness and coating- thickness measurements, it is required to perform
beforehand sample tests of each object and obtain a relationship (This is called as the calibration curve.) between
the thickness and coating-thickness constituent (µm) obtained by a micro meter or other measuring methods and
the absorbance “x” measured by this detector unit.

6.3.1 Data for setting

6.3.1-1) List of setting data

The followings are the setting data for calibration curve.

Setting data name Display Setting range of data

Default value

Remarks

(1) Calibration curve No. CH 1 to 99 1
(2) Calculation mode Md 1 to 4 1

a0

A0 0 to ±9999.9 0.0000
a1 A1 0 to ±9999.9 1.0000
a2

A2 0 to ±9999.9 0.0000
a3 A3 0 to ±9999.9 0.0000
a4 A4 0 to ±9999.9 0.0000
a5 A5 0 to ±9999.9 0.0000
a6 A6 0 to ±9999.9 0.0000
a7 A7 0 to ±9999.9 0.0000
a8 A8 0 to ±9999.9 0.0000
a9 A9 0 to ±9999.9 0.0000

(3) Polynomial coefficient

a10 AA 0 to ±9999.9 0.0000

Effective numeric

: 5 digits

b0 b0 0 to ±9999.9 0.0000

b1

b1 0 to ±9999.9 1.0000

(4)

Correction expression
coefficient

b2

b2 0 to ±9999.9 0.0000

Effective numeric

: 5 digits

Lo 0 to 9999.9 0.00 (5) Low/ High limit constituent

output

Hi 0 to 9999.9 100.00

Effective numeric

: 5 digits

AL 0 to 9999.9 0.00 (6) Low/ High limit constituent

alarm

AH 0 to 9999.9 100.00

Effective numeric

: 5 digits

(7) Preset constituents PS 0 to 9999.9 0.00 Effective numeric

: 5 digits

(8) Water absorbance Ab 0 to ±9999.9 0.00 Effective numeric

: 5 digits

The settings shown below can also be executedvia this detector unit or the
operator interface/display unit (sold separately).

Remarks

This paragraph describes the setting method of calibration curve data, assuming that
calibration curves have been already created. When the calibration curves have not been
created yet, refer to [7. Procedure for creating calibration curves].

Reference

Reference

The absorbance “x” is the ratio of the absorbed amount of the light having the wavelength S

of 1.43, 1.94 or 3µm, which is absorbed in a measuring object, to that of the light having

the reference wavelength R not absorbed.

6. Operation

INST.No.INE-475-P1CE Software Version 1.00

-14-

6.3.1-2) Functions of setting data

Data name Function

(1) Calibration curve

No.

An optional number from 1 to 99 can be designated as the calibration curve.
Ordinary It is designated sequentially from “1”.

(2) Calculation mode Select the calculation mode the calibration curve The calculation mode and

wavelength number differs by the models of IRMA.

• Calculation mode 1 to 3: The processing becomes the 2-wavelength
processing/3-wavelength processing (R1, S, R2)

on the each calculation mode.

• Calculation mode 4: Multiple regression calculation that used each
wavelength. The wavelength number differs by the
models of IRMA.

Wavelength λ1 λ2 λ3 λ4 λ5 λ6 λ7 λ8 λ9 λ10
Calculation group Group 1 Group 2 Group 3

Calculation mode 1 R1 S R2 ― ― ― ― ― ― ―
Calculation mode 2 ― ― ― R1 S R2 ― ― ― ―

Calculation mode 3 ― ― ― ― ― ― R1 S R2 ―

Calculation mode 4 λ1 λ2 λ3 λ4 λ5 λ6 λ7 λ8 λ9 λ10

(3) Polynomial

coefficient
“a0 to a10”

Polynomial coefficient is calculated by selected calculation mode.

• Calculation mode 1 to 3: Assume that the calibration curve is represented by
the third-degree or lower-degree polynomial of

y = a3x3 + a2x2 + a1x + a0, where, “y” is the constituents and “x” is the
absorbance (“CH0” data of this detector unit).

• Calculation mode 4: Calibration curve is calculated by multiple regression
calculation using each wavelength.

y = a0 + a1LOG(λ1) + a

2

LOG(λ2) + ···· + a

10

LOG(λ10)

The wavelength number differs by the models of IRMA.

(4) Correction

expression

coefficient “b

0

to b2”

These coefficients are provided for the quadratic expression correction (zero and
span correction) with reference to the constituents “y”. Assuming that the
constituents after the correction be “Y”, we obtain “Y = b2y2+b1y + bo”.

(5)

Low/ High limit

constituents output

These specify constituents at a low limit output and a high limit output on the
analog output scaling. The output is scaled to 4mA at the low limit constituents
and 20mA at the high limit constituents.

(6)

Low/ High limit

constituents alarm

The low limit alarm is activated when the measured value is lower than the low
limit alarm set-point of constituents and the high limit alarm is activated when the
measured value is higher than the high limit alarm set-point of constituents. Use the
operator interface/display unit when the alarm outputs are required.

(7) Preset constituents By turning on the preset output by key operations or through communications, the

constituents being set as a preset value is displayed and outputted, regardless of the
measured value.

(8) Water absorbance Decide the water absorbance to compute the surface water ratio for measuring the

moisture content of sands, etc. [This setting is only enable when the surface water
ratio computation shown in (11) of “6.4.1 Setting data” is set to ON.]
The relation between the measured moisture content (%: mass basis moisture
content), the surface water ratio (%) and the water absorbance (%) is;

y Surface water ratio = (Moisture content – Water absorbance) / (1 + (Water

absorbance / 100)

6. Operation

INST.No.INE-475-P1CE Software Version 1.00

-15-

6.3.2 Procedure for setting

1) Press SEL key for 2 seconds to enter into the calibration
curve setting mode “CH”.

2) Press key. A numeric blinks for entering a calibration

curve number.

3) Change the numeric by key, key or key.

Press key to increase the numeric.

Press key to decrease the numeric.

Press key to shift the blinking digit.

4) Press ENT key. The numeric stops blinking and the

calibration curve number is stored.

5) Press SEL key to enter into the setting mode “A0” for

polynomial coefficient a

0

.

6) Enter into a numeric setting mode by pressing key.

Change the numeric by key or key and store it by
pressing ENT key. For entering a decimal point, press

CH/・ key at the blinking digit.

7) Press SEL key to enter into the next data setting mode.

8) Repeat the above procedure from 2) to 7) to set all data.

9) After the above setting procedure is completed, return to the measurement mode by pressing

SEL key for two seconds. The automatic return is made if no key is pressed for one minute.

6.3.3 Correcting calibration curves

If the actual constituents does not correspond with the constituents on the calibration curve being
preset due to the difference of one-line and off-line measurements, or other causes, correct it with
the correction coefficients b0, b1 and b2 in [6.3 Setting calibration curve data]. These coefficients
are provided for the quadratic expression correction against the measured value “y”. Assuming that
the measured value after correction be “Y”, we obtain,

Y = b2y2 + b1y + bo

Usually, the shift correction is done with b0 only. (b1 = 1, b2 = 0)

CH

DATA

C H 0

Setting data name

CH

DATA

A

0 0. 0 0 0 0

Setting data

Blinking

Calibration curve number
entering mode

CH

DATA

C H 0

CH

DATA

CH ３

Calibration curve number setting

The settings shown in the next paragraph can also be executed via the operator
interface/display unit (sold separately).

[Example 1: Moisture measuring]
When the measured moisture content before correction is 15 (%H2O) and the
actual moisture content is 13 (%H2O), “-2%H2O should be set.

(b2 = 0, b1 = 1, b0 = -2)

6. Operation

Remarks

Remarks

[Example 2: Thickness and coating-thickness measuring]
When the measured thickness or coating-thickness content before correction is

25.0 (

µm) and the actual thickness and coating-thickness is 23.5(µm ), “-1.5 (µm)

should be set.

(b

2

= 0, b1 = 1, b0 = -1.5)

Remarks

INST.No.INE-475-P1CE Software Version 1.00

-16-

6.4 Setting operating conditions

Set the operating conditions including time constant and hold function.

6.4.1 Data for setting

Set the following data in the operating condition setting mode.

Setting data name Display Setting range

of data

Default
value

Remarks

Constituent 1 t1
Constituent 2 t2
Constituent 3 t3

(1) Time constant

Constituent 4 t4

0.0 to 99.9 0.2 Unit: Second

(2) Hold ON/OFF Hd ON, OFF OFF
(3)

Preset output ON/OFF PS ON, OFF OFF

(4) Constituent number dC 0 to 4 1

0: Circulation display

1: Number of constituents
Constituent 1 d1
Constituent 2 d2
Constituent 3 d3

(5)

Number of
decimal
places

Constituent 4 d4

0 to 4 1

(6)

Constituents number/CH
number display selection

dK ON, OFF OFF

OFF: Constituents number

display

ON :CH number display

(7) Constituents number of

analog output/Contact output

oC

1 to 4 1

(8) Contact output: Selection of

contact output enabled/disabled
and output item

do

nonE
ALArM
Error

nonE

NonE: No output

ALArM: High/low alarm

Error: Self-diagnosed error

(9) Contact input: Selection of

contact input enabled/disabled
and input item

di none

HoLd
PrSEt
SMt.rL

nonE NonE: No output

HoLd: Hold

PrSEt: Preset

SMt.rL: Smoothing/real

(10) Communication protocol Pt rtU

Priv*

rtU rtU: MODBUS RTU mode

Priv:*

(11) Detector number Hn 1 to 9

1 to 247
1 to 31*

1 Operator interface/display unit

MODBUS RTU mode

Communication speed SP 9600, 19200 9600
Parity P nonE

odd
EVEn

EVEn nonE: No parity

odd: Odd parity

EVEn: Even parity

Data length d 7, 8* 8
Stop bit length Sb 1, 2* 1

(12)

BCC enabled/disabled bC ON, OFF* OFF

These parameters are for the

private protocol “Priv” in the

above [(7) Communication

protocol] and are not used with

this detector unit.

* : Not using in this detector

6. Operation

The following paragraph can also be executed from “IRGMEG2” (sold separately).

Remarks

INST.No.INE-475-P1CE Software Version 1.00

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Setting data name Display Setting range

of data

Default
value

Remarks

Sample temperature
correction ON/OFF

St ON, OFF OFF

The following settings can be executed at "ON".

・Correction input scaling L tL -999 to 999 0

(13)

・Correction input scaling H tH -999 to 999 100

(14) Surface water ratio

computation ON/OFF

Sd ON, OFF OFF

Engineering mode ENG

The following settings can be executed by pressing [ENT] key.

Processing mode 1:

Weight α1

1A 0 to 1.000 0.500 0.5: 3-wavelength processing

0 or 1: 2-wavelength processing

Processing mode 1:

Calibration constant k1

1K 0 to ±9.9999 1.0000

Processing mode 2:

Weight α2

2A 0 to 1.000 0.500 0.5: 3-wavelength processing

0 or 1: 2-wavelength processing

Processing mode 2:

Calibration constant k2

2K 0 to ±9.9999 1.0000

Processing mode3:

Weight α3

3A 0 to 1.000 0.500 0.5: 3-wavelength processing

0 or 1: 2-wavelength processing

(15)

Processing mode 3:

Calibration constant k3

3K 0 to ±9.9999 1.0000

6. Operation

INST.No.INE-475-P1CE Software Version 1.00

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6.4.1-1) Descriptions of setting data

Setting data name Description

(1) Time constant If the measured value fluctuates noticeably, the signal can be set to

be dull by delaying the response of this detector unit. The
smoothing time (equivalent to the time constant of analog
instruments) can be set in 0.1-second increment.

(2) Hold ON/OFF By setting it to ON, the measured value is held.

At the same time, the analog output is also held.

(3) Preset output

ON/OFF

By turning on the preset output, this detector unit displays the preset
value and the analog output becomes the value corresponding to the
preset value.

(4) Constituents number

For the setting the number of constituents displayed. It skips in the
case of constituents 1.
The setting of constituent number 1 to 4 is possible and

displays it in

circulation with 0. Defalut value is 1.

(5)

Number of
decimal places

For the setting the number of decimal places of displayed data

(6)

Constituents number/CH
number display selection

Select constituent number/CH number display.

Set it to ON for

changing the CH display from

constituent number to calibration curve
number in measuring mode.
Defalut value is OFF.(constituent number

display)

(7) Constituents number of

analog output/Contact
output

The setting of constituent number of analog output and contact
output is possible. It skips in the case of constituents 1. The setting of
constituent number 1 to 4 is possible. Defalut value is 1.

(8) Contact output : Selection

of contact output
enabled/disabled and
output item

Select whether the contact output is enabled or disabled, and select
the output item.

(1) NonE :Disabled
(2) ALArM :Outputs the high/low alarm, by the contact, of the

calibration curve number being set

(3) Error :It is outputted when an abnormality is detected by the

self-diagnosis function shown in [9.2 Self-diagnosis
function].

(9) Contact input : Selection

of contact input
enabled/disabled and
output item

Select whether the contact input is enabled or disabled, and select the
output item.
(1) NonE: Disabled
(2) HoLd: The analog signal is held by the latest value.

(Holding by the signal H)

(3) PrSEt: The analog signal is set to a fixed value of 4-20mA.

(Fixing by the signal H)

(4) SMt.rL: Switching of Smoothing or Real (Real by signal H)

(10) Communication protocol rtU: MODBUS RTU mode

Priv: Exclusive mode - *This is not used with this detector unit.

(11) Detector number This is a number for identifying each detector in the

multiple-detector-units connection. This setting has been completed
in [6.2 Setting detector unit numbers].

6. Operation

INST.No.INE-475-P1CE Software Version 1.00

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Setting data name Description

(12) Communications speed,

Parity, Data length, Stop bit
length, BCC enabled
/disabled

When this detector unit is connected with the operator
interface/display unit, skip these settings.
These are for communications with a personal computer, a
sequencer or other similar devices. Set them corresponding to a
master unit.

• Communications speed: Select 9600 or 19200bps.

• Parity: Select No, Even or Odd.

• Data length: The data length of the MODBUS RTU mode is fixed
to 8 bits. No need to select.

• Stop bit length: The stop bit length of the MODBUS RTU mode

is automatically set with the setting of the parity.

(EVEN or odd parity: 1 bit, No parity: 2 bits)

• BCC enabled/disabled: *This is not used with this detector unit.

(13) Sample temperature

correction ON/OFF

When calibration curves change by sample temperatures, this
function enables to change the calibration curve to the other one by
measuring the sample temperature.
As the input of the sample temperature, a radiation thermometer or
a temperature/voltage converter with the output of 4 to 20mADC
can be used.
When the sample temperature correction is set to ON, the following

settings are required. ・Correction input scaling L, Correction input

scaling H

These are used for scaling of 4 to 20mA correction input.

(14) Surface water ratio

computation ON/OFF

For the computation of the moisture content of sands, etc., select
the surface water coefficient computation is enabled or disabled. Set it
to ON for enabling.

(15) Engineering mode Set the “weight α1” and “calibration constant” to processing mode 1

to processing mode 3.

(1) Weight α1: The 3-wavelength processing or 2-wavelength

processing can be switched by changing of the

setting of the weight α1.
When α1 is set to 0.5, the processing becomes the 3-wavelength
processing that is the ratio processing of three (3) wavelengths.
When α1 is set to 0 or 1, the processing becomes the
2-wavelength processing.
(α1: 1 - the ratio processing of λ1 and λ2, α1: 0 - the ratio
processing of λ2 and λ3)

(2) Calibration constant K1: This is the value obtained in [6.5

Calibration] and has been stored
automatically.

6. Operation

Reference

·Please replace α1 to α2 and k1 to k2 in processing
mode2.

·Please replace α1 to α3 and k1 to k3 in

p

rocessing

mode3.

Refer to [6.3.1-2) Functions of setting data

INST.No.INE-475-P1CE Software Version 1.00

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6.4.2 Procedure for setting operation conditions

1) Press SEL key and ENT key simultaneously for 2
seconds to enter into the operation condition setting mode.

2) Press key. A numeric blinks for entering a setting data.

3) Change the numeric by key, key or key.
Press key to increase the numeric.
Press key to decrease the numeric.
Press key to shift the blinking digit.
For entering the decimal point, press CH/. key at the

blinking digit.

4) Press ENT key. The numeric blinking stops and the data
is stored.

5) Press SEL key to enter into the setting mode of the next
setting data. Repeat the above procedures from 2) to 4) to
set all setting data except the engineering mode.

6.4.3 Setting data in the engineering mode

1) For the setting of the [Weight α1] and the [Calibration
constant k1] in the engineering mode, press SEL key
several times to enter into the engineering mode “Eng”
shown right.

2) Press ENT key in this engineering mode to enter into the

setting mode “1A” of the weight α1. 

3) Change the numeric by key, key or key.
Press key to increase the numeric.
Press key to decrease the numeric.
Press key to shift the blinking digit.

For entering the decimal point, press CH/.  key at the

blinking digit.

4) Press ENT key to store the weight α1.

5) Then press SEL key to enter into the setting mode “1k”
of the calibration constant K1.

6) Change the numeric by key, key or key.
Press key to increase the numeric.
Press key to decrease the numeric.
Press key to shift the blinking digit.
For entering the decimal point, press CH/. key at the

blinking digit.

7) For the setting of the [Weight α2] and the [Calibration constant k2] press SEL key several times to

enter into the engineering mode “Eng” shown right. Press ENT key in this engineering mode to
enter into the setting mode “2A” of the weight α2. Repeat the above procedure from 3) to 7) to set
[Weight α2] and the [Calibration constant k2].

8) For the setting of the [Weight α3] and the [Calibration constant k3] press SEL key several times to

enter into the engineering mode “Eng” shown right. Press ENT key in this engineering mode to
enter into the setting mode “3A” of the weight α3. Repeat the above procedure from 3) to 7) to set
[Weight α3] and the [Calibration constant k3].

Setting data name

Blinking

 ｔ ０．０

CH

DATA

t 0. 0

CH

DATA

t 0. 0

CH

DATA

H d O N

Blinking

Next setting data name

CH

DATA

E n g

Engineering mode

Press ENT key.

6. Operation

CH

DATA

1 A 0. 5 0 0

Weight α1 setting mode

Press ENT key.

Press SEL key.

CH

DATA

1 K 1. 0 0 0

Calibration constant K1
setting mode

INST.No.INE-475-P1CE Software Version 1.00

-21-

6.5 Setting calibration curve number of each constituent number

Setting data
name

Display

Setting range
of data

Default
value

Remarks

Constituent
number

C0 0 to 4 1

0: Absorbance display mode
1 to 4: Constituent number setting mode

Calibration
curve number

CH 1 to 99 1

Correspondence to 1 to 4 each
constituent number

6.5.1 Setting constituent number

Set the calibration curve number of constituent number 1 to 4 in accordance with the measurement
object.

1) Press CH/. key to enter into the constituent number "C0"

setting mode.

2) Press key to enter a setting data.

3) Change the numeric by key, key or key.

Press key to increase the numeric.

Press key to decrease the numeric.

Press key to shift the blinking digit.

4) Press ENT key. The numeric blinking stops and the data is
displayed.

6.5.2 Setting calibration curve number

1) Press SEL key simultaneously for 2 seconds to enter into the
calibration curve number "CH" setting mode.

2) Press key to enter a setting data.

3) Change the numeric by key, key or key.

Press key to increase the numeric.

Press key to decrease the numeric.

Press key to shift the blinking digit.

4) Press ENT key. The numeric blinking stops and the
calibration curve number is displayed.

5) To set the calibration curve number of constituent number
1 to 4, repeat the above procedure from 1) to 4) to set all
data.

6) Press SEL key for 2 seconds. The mode returns to the
measurement mode.

6. Operation

CH

DATA

CO 1

CH

DATA

CO 1

Blinking

Constituent number
setting mode



CH

DATA

CO 2

The constituent number that is able to set it differs by the models of IRMA.
Confirm the specification of your IRMA series.

Remarks

CH

DATA

Calibration
curve number
setting

Calibration curve
number of
constituent number

CH 3

CH

DATA

Blinking

Calibration curve
number setting mode



CH 1

Caution

[Analog output in case of using Model“IRGMEG2





”]

1. The analogue output of IRGMEG2 is 2 outputs of OUT1, OUT2.
(However the analogue output of IRGMEG2V is 1 output of OUT1 only.)

2. By reference to [3.5 Analog output and alarm output] (in separate manual of
"IM series Infrared multiple-constituent analyzer operator interface/Display
unit”), set the constituent number that you want to output the analog output.

INST.No.INE-475-P1CE Software Version 1.00

-22-

6.6 Calibration : Continuously set up [6.6.1 Absorbance display mode settings] and [6.6.2

Calibration]
For using this detector unit accurately, the periodical calibration (once in three months) is
recommended.
The calibration is executed by using the output checker plate.

Mount the output checker plate to the top of the air-purge hood and measure the No. 1 side of the
output checker plate.

6.6.1 Absorbance display mode settings

With the following procedure, enter into the absorbance
display mode by setting the calibration curve number to “0”.

1) Press CH/. key to enter into the constituent number "C0"

setting mode.

2) Press key to enter a numeric.

3) Change the numeric to “0” by using key.

4) Press ENT key. The numeric stops blinking and

constituent number setting mode "C0" is displayed.

5) Press SEL key for 2 seconds and display the absorbance

display "M1" setting mode.

6.6.2 Calibration

1) Execute the calibration by pressing three keys of
SEL , , and ENT simultaneously.

When the displayed absorbance “x” is within 0.0000 ±

0.0050 for IRMA5100 and within 0.0000 ± 0.0100 for
IRMA5200, the calibration is completed.

2) By pressing CH/. key, display the absorbance display constituent number setting mode "C0".
Set the constituent number in original number (1 to 4).

3) Press SEL key for 2 seconds and cancel the absorbance display mode. The measured value of

calibration curve set to the constituent value is displayed.

Supply the power to this detector unit for one hour or longer before calibration.

6. Operation

Remarks

IM

SERIES

Detector unit

Air-purge hood

Output checker plate

Glass side (No. 1 side) of
output checker plate

Output checker plate
(Insert it until its top is touched to the protrusion of the holder part.)

Set the glass side (No. 1 side) to
moisture measurements and insert it
into the holder part of the air-purge
hood.

CH

DATA

M1 0.0000

Display of absorbance “x”

Absorbance display setting mode

CH

DATA

M1 0.0021

CH

DATA

CO 1

Constituent number
setting mode

Constituent
number
blinkin

g

CH

DATA

CO 0

Absorbance display mode

INST.No.INE-475-P1CE Software Version 1.00

-23-

6.7 Setting output limit values of calibration curves

The measured value can be fixed by low limit and high limit absorbance values.

When the absorbance becomes less than the low
limit absorbance value, the measured value is
fixed to YL as shown right.
Also, when the absorbance becomes more than the
high limit absorbance value, the measured value is
fixed to YH.

6.7.1 Data for setting limit values of calibration curves

Set the following data for the calibration curve output limit values.

Setting data name Display Setting range

of data

Default
value

Remarks

(1) Calibration curve number CH 1 to 99 1
(2) Output limit processing

enabled/disabled

LM OFF, ON OFF 0: OFF, 1: ON

Low limit absorbance value XL 0 to ±9999.9 0.0000 Effective numeric: 5 digits

(3)

Low limit measured value YL 0 to ±9999.9 0.0000 Effective numeric: 5 digits
High limit absorbance value XH 0 to ±9999.9 9.9999 Effective numeric: 5 digits

(4)

High limit measured value YH 0 to ±9999.9 9999.9 Effective numeric: 5 digits

Setting data name Description

(1) Calibration curve number Any calibration curve number in 1 to 99 can be

specified, but it is normally specified from 1
sequentially.

(2) Output limit processing enabled/

disabled

Set the output limit processing enabled or disabled.
When ON (enabled) is set, the measured value is
outputted corresponding to the limit values being set.
When OFF (disabled) is set, the measured value is
outputted corresponding to the calibration curve data.

(3) Low limit absorbance value XL

Low limit measured value YL

Enter data to fix the measured value at the low limit side.

(4) High limit absorbance value XH

High limit measured value YH

Enter data to fix the measured value at the high limit
side.

6. Operation

YH

YL

XL

XH

Measured

value

Absorbance

0

INST.No.INE-475-P1CE Software Version 1.00

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6.7.2 Procedure for setti ng data for output limit valu es of calibration curves

6.7.2-1 Setting the calibration curve numbers (CH)

1) Press SEL key and CH/. key simultaneously for 2 seconds to
display "CH" in the CH display for entering the calibration
curve number setting mode for the calibration curve output
limit values.

2) Set a calibration curve number.

  ENT

6.7.2-2 Enabling/disabling the output limit processing (LM)

1) Press SEL key to enter the output limit processing
enabled/disabled "LM" setting mode.

Press key to enter a setting data.
Change the setting data by key, key, or key.

Press ENT key to store the setting data.

6.7.2-3 Set t i n g a l o w l i m i t a b s o r ban c e v a l u e (XL) and a low limit measured value (YL)

1) After the above setting, press SEL key to enter the low limit
absorbance value "XL" setting mode.
Press key to enter a setting data.

Change the setting data by key, key, or key.

Press ENT key to store the setting data.

2) After the above setting, press SEL key to enter the low limit
measured value "YL" setting mode.
Press key to enter a setting data.
Change the setting data by key, key, or key.

Press ENT key to store the setting data.

6.7.2-4 Set t i n g a hi gh l i m i t a b s o r b a n c e v a l u e (XH) and a high limit measured value (YH)

1) After the above setting, press SEL key to enter the high limit
absorbance value "XH" setting mode.

Press key to enter a setting data.

Change the setting data by key, key, or key.

Press ENT key to store the setting data.

2) After the above setting, press SEL key to enter the high limit
measured value "YH" setting mode.

Press key to enter a setting data.
Change the setting data by key, key, or key.

Press ENT key to store the setting data.

6.7.2-5 Setting output limit values to other calibration curve numbers

1) After the above setting (6.6.2-1 to 6.6.2-4), press SEL key to return to the calibration curve
number setting mode.

Enter other calibration curve number for setting output limit values.
Repeat the above procedure (6.6.2-1 to 6.6.2-4) to set output limit values to other calibration

curve numbers.

CH

DATA

X

H 1. 000 

CH

DATA

YL 0.0 

CH

DATA

Y H 5 0. 0

CH

DATA

LM O F F

Setting data

Setting data name



CH

DATA

C H 1

Calibration curve number
setting for calibration
curve output limit value

Calibration
curve number

CH

DATA

X

L 0.0 

6. Operation

After the above setting procedure is completed, return to the measurement mode
by pressing SEL key for two seconds. The automatic return is made if no key is

p

ressed for one minute.

Remarks

INST.No.INE-475-P1CE Software Version 1.00

-25-

7.1 Sample preparation: For constituent of moisture etc.

The output characteristics of the infrared multi-constituents meter depend upon measuring objects. It
may also change according to the process conditions or the measuring conditions of samples.
Accordingly, for accurate measurements, it is required to perform beforehand sample tests of each
object and obtain a relationship (This is called as the calibration curve.) between the moisture content
(%H2O) obtained by a drying method or other measuring methods and the absorbance “x” measured
by this detector unit.
This chapter describes the measurements of the moisture content by the drying method. However,

the same creation method of the calibration curves is applied to the measurements of the moisture
content by the Karl Fischer method or other methods.

7.1.1 Powders or granular substances

1) Take a sample of about 2 to 4 liters from the measuring object.

2) Dry up the sample up to the absolute dry condition by a dryer. Particularly be careful with the
heating temperature so as not to denature the sample.

3) Divide the dried sample into every 100 to 200cc. It is recommended to divide it into many
samples, but 5 to 6 samples are ordinary used.

4) Add water to these 5 to 6 samples bit by bit so that the moisture content of each sample divides
the measuring range almost evenly.

5) Stir each sample with water added sufficiently, put it into a polyethylene bag and then seal it

tightly. Leave each sample for about 2 days until its moisture content is stabilized.

7.1.2 Papers (sheet materials)

1) Cut a sample to have a size of about 100 x 100mm. (Number of samples: 9 sheets)

2) Divide 9 sample sheets into 3 groups with 3 sheets in each group. Adjust the moisture content of
each group under the following conditions.

Drying: Leave the samples in a desiccator containing silica gel for 2 days. In case of

papers, the moisture content becomes about 4%H2O.

In the air: Leave the samples in an indoor atmosphere.

In case of papers, the moisture content becomes about 7%H2O in summer or
about 5%H2O in winter.

Moistening: Leave the samples in a desiccator containing salt water for 2 days.

In case of papers, the moisture content becomes 8 to 9%H2O normally or
maximum about 11% H2O.

1

2

3

N

1

2

3

4

5

6

With silicagel

With salt water

！

For a sample cannot be measured because it cannot be heated or it is hardened
by adding water, adjust the moisture contents according to the procedure for
papers shown in Para. [7.1.2]

！

Wear clean gloves not to touch the samples by hands directly. It is
convenient for you to mark the samples for identifying their front/back
surfaces and their measurement sequence.

7. Procedure for creating calibration curves

Caution

Caution

INST.No.INE-475-P1CE Software Version 1.00

-26-

7.2 Sample measurement: For constituent of moisture etc.

Be careful with the following cautions in measurements.

1) Before measurements, warm up this detector unit more than 1 hour.

2) Place samples at the same position as in actual measurements, set the calibration curve number
to 0, and then read the display (absorbance "x").

3) Perform the measurements rapidly.

4) The visible light is irradiated from this detector unit. Confirm that the samples cover the
measurement area completely.

7.2.1 Sample measurement for powders or granular substances

1) Prepare the same quantity of trays (Ø100 to 150mm in diameter, about 20mm in depth) as

samples.

2) Weigh each tray (weight W

0

).

3) Empty the sample sealed from the polyethylene bag and then spread it on the tray until its
surface becomes flat and its bottom cannot be seen.

4) Put the tray at the measuring position, set the calibration curve number of this detector unit to 0,
and then read its display (absorbance "x"). If the measured value cannot be read easily, delay
the response with the smoothing function.

5) Stir the sample rapidly with a spoon and measure it by this detector unit again. Repeat this
measurement 2 or 3 times per sample.

6) Weigh the tray with the sample put on (weight W

1

).

7) Perform the same measurements on all samples.

8) Put all samples with trays into a dryer, and dry them until they become in the absolute dry
condition (Drying for more than 2 hours at 105 to 110ºC is usually required.).

9) Cool them down after drying and weigh each tray with the sample put on (weight W2).

10) Record the measured values in the following table every measurement and obtain the moisture
contents by the following formula.

X 100 (%H2O)

No. Absorbance "x"

W

0



W1 W2

Moisture content (%H

2

O)

1

x1

y1

2

x2

y2

3

:

x3

:

y3

:

n

xn

yn

7. Procedure for creating calibration curves

W1 ─ W2
W

1

─ W0

INST.No.INE-475-P1CE Software Version 1.00

-27-

7.2.2 Sample measurement for papers (sheet materials)

1) Weigh a sample before measurements (weight W1).

2) Hold the sample by a paper holder, put it by tilting at 15º to the measuring position, set the
calibration curve number of this detector unit to 0, and then read its display (absorbance "x").

3) Weigh the sample after the above measurement (weight W2). Perform the measurements from (1)

to (3) as quickly as possible.

4) Perform the same measurements on all samples. For these measurements, the same surface (front

or back) of the samples should be measured and the same measurement sequence should be
taken.

5) Put all samples into a dryer, and dry them until they become in the absolute dry condition (Drying

for more than 2 hours at 105ºC is usually required.).

6) After drying, put all samples into a desiccator containing silica gel, and allow them natural-

cooling.

7) Weigh each sample (weight W

3

).

8) Record the measured value in the following table every measurement, and obtain the moisture

contents by the following formula.

X 100 (%H2O)

No. Absorbance "x"

W1 W2 W3

Moisture content (%H2O)

1

x1

y1

2

x2

y2

3

:

x3

:

y3

:

n

xn

yn

7. Procedure for creating calibration curves

(W1 + W2)/2 ─W

3

(W1 + W2)/2

INST.No.INE-475-P1CE Software Version 1.00

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7.3 Sample preparation: For constituent of thickness or coating-thickness

The output characteristics of the infrared thickness (coating-thickness) meter depend upon measuring
objects. It may also change according to the process conditions or the measuring conditions of
samples.
Also, for accurate thickness and coating- thickness measurements, it is required to perform beforehand sample
tests of each object and obtain a relationship (This is called as the calibration curve.) between the thickness and
coating-thickness constituent (µm) obtained by a micro meter or other measuring methods and the absorbance
“x” measured by this detector unit.

1) 3 to 5 pieces standard is required for measuring the thickness and coating- thickness.

3 pieces standard is the 3 samples that thickness and coating- thickness differs.

(Example) The thinnest thing, thickest thing or the intermediate thing.

2) 3 to 5 pieces of100 mm x 100 mm size is required for 1 standard.

3) The struggling of thickness and coating- thickness sample is required demand accuracy of 1/3 or less

In case that thickness and coating- thickness is 100µm and demand accuracy is ±3µm, the thickness and
coating- thickness of sample is required within 99 to 101µm.

7. Procedure for creating calibration curves

Caution

Wear clean gloves on the occasion of handling, so as not to touch the sample
directly.
If checking the front or rear side and flow directions of the sample, it is convenient
in measurement.

INST.No.INE-475-P1CE Software Version 1.00

-29-



7.4 Sample measurement: For constituent of thickness or coating-thickness

Please measure and pay attention below.

1) Place samples at the same position as in actual measurements, set the calibration curve number to

0, and then read the display (absorbance "x").

2) The visible light is irradiated from this detector unit. Confirm that the samples cover the

measurement area completely.















3) Put the sample tilt by 15° from the vertical surface and read the absorbance "x")



4) Measure the thickness and coating- thickness “y” by a micro meter or other measuring methods.
The thickness and coating- thickness “y” in this case is average value measured of 9 points in
measurement area.





Measured value by micro meter

No.

Absorbance

"x"

Thickness

“y”

1 2 3 4 5 9

1
2
3

n

I

M

S

E

R

I

E

S

1

5

°

300mm

Measuring objects

Measurement area

Measured points by micro meter

Caution

Conform the front or rear side to flow directions of the sample.

INST.No.INE-475-P1CE Software Version 1.00

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8.1 General

When a calibration curve changes depending on the sample temperature Ts, this function enables to
switch the calibration curve to other one corresponding to the sample temperature measured. For the
input of the sample temperature, a radiation thermometer or a temperature/voltage converter with
the output of 4 to 20mADC can be used. By utilizing this function, 10 calibration curves in one
group (9 calibration curves only in the group 10) can be switched corresponding to the sample
temperature Ts. 99 calibration curves are available and up to 10 groups can be set accordingly.

8.2 Wiring this detector unit


















8. Sample temperature correction function

Moisture content “Y”

Absorbance "X"

Calibration curve of sample
temperature "T3"

Calibration curve of sample
temperature "T2"

Calibration curve of sample
temperature "T1"

Correction input
4 to 20mA DC

P+ P-

OUT+ OUT-

SA SB SG DI COM DO

COM IN+ IN-

24VDC

4- 20mADC

RS-485 DI G IT A LIN

DIGITAL OUT

4-20mADC



INST.No.INE-475-P1CE Software Version 1.00

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8.3.1 Setting with this detector unit

(1) Press SEL key and ENT key simultaneously

for 2 seconds to enter into the operating
condition setting mode.

(2) Press SEL key several times to enter into the

sample temperature correction enabled/
disabled setting mode (St).

(3) Select the sample temperature correction

enabled or disabled.

ENT (OFF) Correction OFF (disabled)

ENT (ON) Correction ON (enabled)

* When you go on setting the sample

temperature scaling, skip the next (4) and
proceed to (2) of [8.4 Setting a sample
temperature scaling (8.4.1 Setting with this
detector unit)].

(4)Press SEL key for 2 seconds. The mode

returns the measurement mode.

8.3 Enabling/disabling the sample temperature correction function

Execute this setting with either this detector unit or the operator interface/display unit. When the
correction is disabled, the operation is normal which means the calibration curve is not switched
corresponding to the sample temperature measured. When it is enabled, the calibration curve is

switched with the sample temperature.

8.4 Setting a sample temperature scaling

When a radiation thermometer or a thermoelectric converter is used, matching the temperature
range for its 4 to 20mADC output to the temperature range for 4 to 20mADC input of this detector
unit is required.
Carry out the scaling with either this detector unit or the operator interface/display unit, following
the procedure shown below.








8. Sample temperature correction function

8.3.2 Setting with the operator
interface/display unit

(1) Set the calibration curve number to 0.

CH 0 ENT

(2) Enter into the sample temperature correction

enabled/ disabled setting mode (St).

MODE 1 9 ENT

(3) Select the sample temperature correction

enabled or disabled.

0 ENT (OFF) Correction OFF (disabled)
1 ENT (ON) Correction ON (enabled)

* When you go on setting the sample

temperature scaling, skip the next (4) and
proceed to (2) of [8.4 Setting a sample
temperature scaling (8.4.2 Setting with the
operator interface/display unit)].

(4) Return the calibration curve number to the

original one.

CH

DATA

S t O F F

8.4.1 Setting with the detector unit

(1) Press SEL key and ENT key simultaneously

for 2 seconds to enter into the operating
condition setting mode.

(2) Press SEL key several times to enter into the

sample temperature scaling low limit (tL)
setting mode.

(3) Set the sample temperature scaling low

limit (tL). (Setting range: -999.9 to 999.9)

(4) Press SEL key once to enter into the sample

temperature scaling high limit (tH) setting
mode.

(5) Set the sample temperature scaling high

limit (tH). (Setting range: -999.9 to 999.9)

CH

DATA

t L 0. 0

8.4.2 Setting with the operator
interface/display unit

(1) Set the calibration curve number to 0.

CH 0 ENT

(2) Enter into the sample temperature scaling

setting mode

MODE 2 1 ENT

(3) Set the sample temperature scaling low limit

(tL). (Setting range: -999.9 to 999.9)

(4) Press SEL key once to enter into the sample

temperature scaling high limit (tH) setting
mode.

(5) Set the sample temperature scaling high limit

(tH). (Setting range: -999.9 to 999.9)

INST.No.INE-475-P1CE Software Version 1.00

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

8.5 Setting sample temperature

The following key operation is common to this detector unit or the operator interface/display unit.
(1) Press SEL key for 2 seconds to enter into the calibration curve

setting mode.

(2) Press SEL key several times to enter into the sample

temperature setting mode (tS).

(3) Set the sample temperature.（Setting range: -999.9 to 999.9）

8.6 Setting calibration curve data

(1) Specify a group for calibration curve number to be used.

The groups are from 1 to 10 and each one corresponds to the following calibration curve

numbers respectively.
Group 1: Calibration curve number 1 to 10 Group 6: Calibration curve number 51 to 60
Group 2: Calibration curve number 11 to 20 Group 7: Calibration curve number 61 to 70
Group 3: Calibration curve number 21 to 30 Group 8: Calibration curve number 71 to 80
Group 4: Calibration curve number 31 to 40 Group 9: Calibration curve number 81 to 90
Group 5: Calibration curve number 41 to 50 Group 10: Calibration curve number 91 to 99

(2) Example: Assuming that the group 1 has been selected,

Set the following calibration curve at the sample low limit temperature T1 to the calibration

curve No. 1.

y = a3x3 + a2x2 + a1x + a0

Only the calibration curve by polynomial expression can be used.

Further, set the sample temperature T1. For its setting, refer to [8.5 Setting sample temperature].

(3) Set the calibration curves at the sample temperature Ti (i = 2 to 10) to the calibration curve

numbers 2 to 10.

However, Ti should fulfill the following expression.

T1 (Sample low limit temperature) ≦ T2 ≦ ………. ≦ T9 ≦ T10 (Sample high limit temperature)

(4) Enter 999.9 into the Ti not used. Be careful that, if this value is not entered, a calibration curve

not used is computed as a data.

* The default of the sample temperature Ti is 999.9.

(5) For the correction expression coefficients b1 and b0 and the constants (low limit range, high limit

range, low limit alarm, high limit alarm and preset value), the values for the first calibration

curve number in a group are used. 

Group 1: Calibration curve number 1 Group 6: Calibration curve number 51

Group 2: Calibration curve number 11 Group 7: Calibration curve number 61

Group 3: Calibration curve number 21 Group 8: Calibration curve number 71

Group 4: Calibration curve number 31 Group 9: Calibration curve number 81

Group 5: Calibration curve number 41 Group 10: Calibration curve number 91

CH

DATA

t S 9 9 9. 9

8. Sample temperature correction function

INST.No.INE-475-P1CE Software Version 1.00

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8.7 Measurement

(1) When ON (enabled) is selected in the sample temperature correction and one calibration curve

number in a group is set, the calibration curve number is automatically switched corresponding
to the sample temperature.
For example, when the sample temperature Ts fulfills the following expression, the calibration
curve number becomes “i”.

T1 ≦ ….. ≦ Ti ≦ Ts < Ti + 1 ≦ ….. ≦ T10

(2) However, the measured value Y is not the measured value Y1 on the calibration curve No. “i”

but becomes the following value interpolated from the measured value Yi and the measured
value Y

i+1

on the calibration curve No. “i+1”.

Y = (Y

i+1

- Y

i

) ×



+ Y

i

(3) When the sample temperature Ts is lower than the sample temperature of the first calibration

curve number in the group or when it is higher than the sample temperature of the last
calibration curve number, the following error display appears.

 However, the calibration curve, of which sample temperature is set as 999.9, is ignored.

* For the sample temperature lower than the sample temperature of the first calibration curve

number in the group ….. Er15 (Sample temperature too low)

* For the sample temperature higher than the sample temperature of the last calibration curve number

in the group ….. Er14 (Sample temperature too high)

Ts - Ti

T

i+1

- Ti

8.8.1 Displaying with this detector unit

(1) Set the calibration curve number to 0.

CH 0 ENT
(2) Press key for 2 seconds to display the

sample temperature.

(3) For canceling of the sample temperature

display, press SEL key for 2 seconds or

press CH key for 2 seconds

8.8.2 Displaying with the operator
interface/dis p lay u n i t

(1) Set the calibration curve number to 0.

CH 0 ENT

(2) Display the sample temperature.

MODE 2 0 ENT
(3) For canceling of the sample temperature

display, press SEL key for 2 seconds or
press CH key for 2 seconds

8.8 Displaying sample temperature Ts

8. Sample temperature correction function

INST.No.INE-475-P1CE Software Version 1.00

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9.1 Periodical inspection

The following inspections are required periodically.

(1) Cleaning the cover glass surface

Keep the cover glass surface of this detector unit clean all times. Wipe off dirt and flogging with
gauze or cloths like that.

It is more effective to impregnate the gauze with alcohol.

(2) Installation

Check this detector unit is correctly installed and fixed securely.

(3) Connections

Check the connections to all terminals of this detector unit, the operator interface/display unit, a
receiving instrument or other instruments are fixed securely.

(4) Purge air

Check flow, pressure and cleanness of air supplied for air-purging are adequate.

(5) Calibration

For maintaining the accuracy of this detector unit, the calibration of the unit once in 3 months is
recommended by using the output checker plate (Model IR-WEB or IR-WEB3: sold separately).

9.2 Self-diagnosis function

The self-diagnosis function is built in this detector unit. When an abnormal condition occurs, the
corresponding error number is displayed.
All error numbers are common to this detector unit and the operator interface/d isplay unit.

Error

No.

Item Contents Measures

Diagnosed
abnormal
condition*

-----

High limit over range Measured value is higher than

the displaying range.

Check the calibration curve data.
Check the output by the output
checker plate.



-----

Low limit over range Measured value is lower than the

displaying range.

Check the calibration curve data.
Check the output by the output
checker plate.



Er01 Nonvolatile memory

abnormal

Writing to or reading from the
nonvolatile memory is disabled.

Return this detector unit to
CHINO.

{

Er03 Motor rotation

abnormal

The motor stops or rotates
abnormally.

Replace the motor.

{

Er06 Computation error Overflow happed in computation Check the output by the output

checker plate.

{

Er07 Element temperature

abnormal

The element temperature is
abnormal.

Return this detector unit to
CHINO.

{

Er12 Ambient temperature

too high

The ambient temperature of the
detector unit is high

Lower the ambient temperature.



Er13 Ambient temperature

too low

The ambient temperature of the
detector unit is low

Raise the ambient temperature.



Er14 Sample temperature

too high

The sample temperature is
higher than the correction range

Widen the correction range.



Er15 Sample temperature

too low

The sample temperature is lower
than the correction range

Widen the correction range.



Er16 Sample low

reflection

The reflection rate of the sample
is low or the lamp is burned out.

Close the distance to the sample.
If the lamp is burned out, replace
it.



Er17 Sample high

reflection

The reflection rate of the sample
is high.

Incline or extend the distance to the
sample.



Er20 Number of calibration

curves insufficient
for sample temperature
correction

The number of calibration
curves is insufficient for the
sample temperature correction..

Set two calibration curves setting
sample temperature or more.



9. Inspection and maintenance

(Note) For the items filled with { in the self-diagnosed abnormal conditio n, a self-diagnosed abnormal

condition alarm is out

p

utted from this detector unit and the operator interface/display unit.

INST.No.INE-475-P1CE Software Version 1.00

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9.3 Measures against troubles not included with self-diagnosis

If a trouble occurred, take remedial measures referring to the corresponding items of this manual
after checking the following points. For the troubles of the operator interface/display unit, refer to
the separate manual of the operator interface/display unit.

9.3.1 No display on this detector unit appears.

(1) Is the power normal?
(2) Is the fuse normal?
(3) Are cables connected securely?
(4) Is the connector connecting the data display cover and the internal CPU board connected

securely?
(5) Turn off the power once and then turn on it.
(6) If the trouble cannot be repaired by the above checks, the power unit in this detector unit may

be defective.

9.3.2 Measured value remains unchanged.

(1) Is HOLD set to OFF?
(2) Is PRESET set to OFF?
(3) Are the calibration curve data correct?
(4) Turn off the power once and then turn on it.

(5) Does the data display with the calibration curve number 0 by using the output checker plate

change?

(6) When the data remains unchanged, initialize the RAM. If this phenomenon is not still recovered,

return this detector unit to CHINO.

9.3.3 Measured value fluctuates.

(1) Is the measuring surface flat?
(2) Is the measuring position correct? Make sure that the detector unit does not measure such

bottom face as a conveyor belt, etc.
(3) Make sure that any disturbance light is not irradiated onto the measuring surface.
(4) Is the smoothing time proper? Certain smoothing time is necessary in stable measurements.
(5) Make sure that any noise source does not exist around this detector unit or connection cables.
(6) Does the data display with the calibration curve number 0 by using the output checker plate

fluctuate?
(7) When the data fluctuates, initialize the RAM. If this phenomenon is not still recovered, return

this detector unit to CHINO.

9.3.4 Measured value is slightly higher or lower than the actual value.

(1) Is the calibration curve number correct?
(2) Are the calibration curve data correct?
(3) Are HOLD and PRESET set to ON?
(4) Is the measuring position correct?

(5) Is the cover glass surface of this detector unit clean?
(6) Correct the calibration curve. (Refer to [6.3.3 Correcting calibration curves].)

9. Inspection and maintenance

INST.No.INE-475-P1CE Software Version 1.00

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9.4 Maintenance parts

9.4.1 List of maintenance parts

The replacing intervals are reference values. They are subjected to the working conditions.

Article name Quantity Replacing interval Remarks
Lamp (with rubber sheet) 1 5 years
Motor (with connector) 1 3 years
Power board 1 5 years 3 years when the ambient temperature

is 40°C or higher

Fuse 2 Supplied as an attachment

10A Ø5X20mm (Littelfuse 217010)

9.4.2 Replacing a lamp

(1) Turn off the power source to this detector

unit.

(2) Loosen four M4 hexagon socket cap screws

fixing the data display cover and remove the
data display cover slightly.

(3) Disconnect the cable connector (26 pins) at the

display board and the connector (7 pins) at the

power board, and then remove the data

display cover from this detector unit

completely.
(4) Loosen M3 pan screws fixing the lamp cover,

and remove the lamp cover upward.

(5) Turn the lamp bulb counterclockwise viewed

from the filament side about 30 degree, and
pull the lamp from the socket.
(If the lamp is not turned easily, turn the lamp
bulb by wrapping the rubber sheet around it,
which is attached to a new replacement lamp.)

(6) Position the new lamp with the crena portion

of the flange, insert it into the back of the

socket, and then turn it clockwise viewed

from the filament side about 30 degree.
(7) Mount the lamp cover, and then mount the

data display cover (including the connections
of 2 connectors). The replacement of the lamp
is completed.

9. Inspection and maintenance

For replacing maintenance parts, ma ke sure to t urn off the power so urce t o this detect or uni t.

For replacing the lamp, make sure
to turn off the power source to this
detector unit.

Warning

As the data display cover is

connected with internal components

b

y cables, carefully remove the cover

not to scratch the cables.

As the lamp bulb becomes hot after
energization, replace it after cooling
it down enough.

Warning

Caution

Caution

Lamp cover



Lamp

Display board connector (26 pins)

Data display cover

Powerboard
connector (7 pins)

INST.No.INE-475-P1CE Software Version 1.00

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9.4.3 Replacing a motor

(1) Turn off the power source to this detector

unit.

(2) Loosen four M4 hexagon socket cap screws

fixing the data display cover and remove the
data display cover slightly.

(3) Disconnect the cable connector (26 pins) at

the display board and the connector (7 pins)
at the power board, and then remove the data
display cover from this detector unit

completely.
(4) Remove the motor connector (2 pins).
(5) Loosen the fixing screws (M3 pan screws) of

the motor band fixing the motor and remove

the motor by pulling the motor band upward

while pressing the motor.
(6) Make the motor unit stand as shown in the

figure and hold the sector lightly. Remove 4

pieces of M2 screws and separate the sector

from the motor.
(7) Make the new motor stand, too, and mount it

to the sector. Note that the sector has front

and back sides.
(8) Place the motor unit to make the top of the

motor touch the stopper of the motor

mounting base, cover the motor with the

motor band, and then fix the motor by

screwing the fixing screws of the motor

band.
(9) Connect the motor connector, and then

mount the data display cover (including the

connections of 2 connectors). The

replacement of the motor is completed.

For replacing the motor, make
sure to turn off the power source
to this detector unit.

As the data display cover is
co nn ected w ith interna l components

b

y cables, carefully remove the

cover not to scratch the cables.

Never scratch the optical filter
attached to the sector during the
replacement of the motor.

9. Inspection and maintenance

Warning



Sector

M

otor

Caution

Caution

Motor connector (2 pins)

Motor band

Motor unit

Sto

pp

er of the motor

Display board connector (26 pins)

Data display cover

Powerboard
connector (7 pins)



INST.No.INE-475-P1CE Software Version 1.00

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9.4.4 Replacing a power board

(1) Turn off the power source to this detector

unit.

(2) Loosen four M4 hexagon socket cap screws

fixing the data display cover and remove the
data display cover slightly

(3) Disconnect the cable connector (26 pins) at

the display board and the connector (7 pins)
at the power board, and then remove the data
display cover from this detector unit
completely.

(4) Remove the power board by loosing 4 pieces

of M3 pan screws fixing it.
At the same time, replace the heat radiation
sheet (about 60mm2, 0.5mm thickness),
which is slipped with the power board, with
a new heat radiation sheet.

(5) Fix the new power board, while slipping the

new heat radiation sheet, with 4 pieces of
M3 pan screws.

(6) Connect the cable connector (26 pins) at the

display board and the connector (7 pins) at

the power board, and then fix the date

display cover. The replacement of the power

board is completed.

9. Inspection and maintenance

For replacing the power board,
make sure to turn off the power
source to this detector unit.

As the data display cover is
connected with internal components

b

y cables, carefully remove the

cover not to scratch the cables.

Warning

Caution

Display board connector (26 pins)

Data display cover

Power board
connector (7 pins)

Data display cover

Power board

Display board

Heat radiation sheet

4

p

ieces of M3 pan screws

Power board

INST.No.INE-475-P1CE Software Version 1.00

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9.4.5 Replacing a fuse

(1) Turn off the power source to this detector unit.
(2) Loosen four M4 hexagon socket cap screws

fixing the terminal board cover and remove the

terminal board cover.
(3) Push the socket of the fuse holder a little with a

flat head scre wdriver and turn it counterclockwise

about 90 degrees.
(4) Pull out the fuse forward.
(5) Insert the new fuse into the back of the socket,

push the socket a little with a flathead screwdriver,

and then turn it clockwise about 90 degrees.
(6) Mount the terminal board cover. The r e p l acement

of the fuse is completed.

9.5 Ram clearing

If an abnormal condition of this detector unit is not recovered by all means, initialization of the RAM
is required.

9.5.1 Ram clearing

(1) Turn on the power by pressing SEL key and key simultaneously.
(2) The contents of the RAM are initialized. Set the calibration curve data, etc. again.






9. Inspection and maintenance

For replacing the fuse, make sure to
turn off the power source to this
detector unit.

Warning

For initializing the RAM, make sure to turn off the power source to this detector
unit. As the stored contents of the RAM are initialized, record the calibration curve
data, etc. before initialization.

FUSE

P+ P- OUT+ OUT-SA SB SG DI

COM D O

COM I N+ I N-

24VDC

4- 20mA DC

RS-485

DIGITAL IN

DIGITAL OUT

4-20mADC

F

use holder

Terminal board

Caution

Fuse

Socket

INST.No.INE-475-P1CE Software Version 1.00

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10.1 Detector unit: IRMA51, IRMA52

Model IRMA51 IRMA52

Measuring system Infrared reflection type 3-wavelength

system (NIR)

Infrared reflection type multiple-wavelength
system (Thin-film, Infrared)

Lamp Tungsten-filament lamp

Measurement distance 300mm (200 to 300mm adjustable)

Measurement area 50 x 50mm (at the measuring distance 300mm)

With the output checker plate Detector unit output (absorbance “x”):

Within ±0.015 Within ±0.030

Reproducibility

(Under same ambient temperature and the humidity)
The above reproducibility is specified with the output checker plate and it is different
from the reproducibility in the actual measurement.

Stability under the
EMC test environment

Detector unit output (absorbance “x”)
: Within ±0.05

Detector unit output (absorbance “x”)
: Within ±0.1

Output signal Analog signal: 4-20mADC and ±0.2% of full scale (Load resistance: 500Ω or less)

Communication output RS-485 (MODBUS) … Standard Ethernet (LAN) … Option

One of the above outputs is to be specified.

Output update cycle 28ms.
Display Data: LED 5 digits, Calibration curve number, others: LED 2 digits

Setting By keys or through communication.
Processing function 2-color, 3-color ratio processing and multiple regression processing

Number of calibration curve 99 (maximum)

Calibration curve First to third degree to cubic polynomial and multiple regression

With calibration curve correction (First to second-degree correction)

Smoothing processing 0 to 99.9 seconds
Calibration The calibration is enabled by the output checker plate.
Detector unit number
setting

For the multiple-detector-units connection, detector unit numbers can be specified by
key operation.

CH number for the
calibration curve setting

CH number for the calibration curve can be specified by key operation.

Self-diagnosis function

Contact and communication output at self-diagnosed abnormal conditions

Correction input
function

Correction of measured data with an external 4-20mADC input (1 input)
(Sample temperature correction, others)

External Di/o Di (contact input): One function selected from the preset, the data hold or the

real/smooth switching can be inputted via the contact input.

Do (contact output): One function selected from the self-diagnosis function (1 Form

B) or the high/low alarms (1 Form A) can be outputted as the
contact output.

Working temperature
range

0 to 50°C [The cooling by water or air is necessary if the working temperature is
higher than 45°C.] Air is dry-air and air temperature is less than 30°C

Power voltage 24VDC [The power voltage is supplied from the power unit IR-WEP (supplied as an

attachment). Power to the power unit: 100 to 240VAC, 50/60Hz]

Permissible voltage
fluctuation

18 to 30V DC (For products conforming to CE: Within 24VDC±10%)

Power consumption Approx. 36VA (maximum)
Connection Terminal connections

Case Aluminum dust- and splash-proof structure (IEC529, IP65)
Weight Approx. 4.3kg
Installation method Bolt suspension method with 4 pieces of M8 bolts

CE EN61326＋A1＋A2, Emission : classA Immunity : Annex A Table A. 1

Conditions for CE
conformance

1. The connection cable should be used indoors and its length should be up to 30m.

2. One(1) set for DC power source unit should be to one(1) set of this unit.

10. Specifications

INST.No.INE-475-P1CE Software Version 1.00

-41-

10.2 Attachments

10.2.1 Power unit IR-WEP

The power of 24VDC is supplied to the detector unit. This unit is supplied with the detector unit as
an attachment.

Output voltage 24VDC

Output current 2.1A
Working temperature range -10 to 50°C

Power supply 100 to 240VAC (universal power supply), 47 to 450Hz

Allowable voltage fluctuation 85 to 264V AC

Power consumption Approx. 160VA (maximum)

Case Resin
Mounting Wall mounting type (DIN rail mounting)

Weight Approx. 380g

10.2.2 Connection cable IR-WERP

It is the exclusive cable for connecting the detector unit to the operator interface/display unit or the
power unit.

Structure 4-core cab tire cable (with double shield)

Outside diameter Ø10.5mm

Length Maximum length 200m

Connection Both ends - tips

10.2.3 Air-purge hood IR-WEA

It is used to shield against extraneous lights and clear the measurement window and the sight path.

The output checker plate can be attached at the top of the hood.

Purge air Flow: 5 to 200Nℓ/min

Pressure: Maximum 200kPa
(Use instrumentation air not containing oil or dust.)

10.2.4 Output checker plate IR-WEB (For IRMA51)
IR-WEB3 (For IRMA52)

Use it to check the detector output at site.
Attach it to the top of the air-purge hood.

10.2.5 Installation adaptor IR-WED1

It is used to replace an IR-M series moisture meter, which has already been installed, with the IM
series infrared multiple constituents analyzer without any change of the installation place.

Material Aluminum
Weight About 0.8kg

10. Specifications

INST.No.INE-475-P1CE Software Version 1.00

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10.2.6 Air-cooling box IR-WEX

It is used to protect the detector unit from dusts and cool the detector unit by air. (The detector unit is
housed in this air-cooling box.)

Working temperature 0 to 55°C

Material Air-cooling portion: SUS304

Mounting metal portion: Iron

Air Flow: 100 to 500Nℓ/min
Weight About 14kg

10.2.7 Relaying box IR-WEE

It is used as a relaying terminal for the multiple-detector-units connection and a power unit is built in.
The steel case and the SUS case are available. The SUS case is the splash-proof construction.

IR-WEE1 IR-WEE2

Working temperature range 0 to 50°C 0 to 50°C

Material Steel SUS304
Color 5Y7/1 (light beige) -

Weight Approx. 4kg

(including the power unit)

Approx. 4kg
(including the power unit)

10. Specifications

INST.No.INE-475-P1CE Software Version 1.00

-43-

11.1 Detector unit IRMA51, IRMA52

11. Outside dimensions

IM

SERIES



(Ø25)

(25)

133

52

260

130

120

10

120

65

For mounting the air-purge hood
4-M5, depth 6.5

Screw hole
for mounting the detector unit
4-M8, depth11

Cable gland

8

Unit: mm

INST.No.INE-475-P1CE Software Version 1.00

-44-

11.2 Attachments

11.2.1 Power unit (conforming to CE) IR-WEP

11.2.2 Connection cable IR-WERP

11. Outside dimensions

‑V

+V

OUTPUT

DC24V2.1A

L

N

AC100‑240V1.3A



90

80

±0.

2

4-Ø4.5

75

60

±

0

.

2

M3.5 terminal screw

7.5

5

91

45

35.3

Detector unit side

Power unit or
operator interface/display unit side

30

110

20

200

Ø10

Length is to be specified. (up to 200m)

Insulation coating

Maker tube

Unit: mm

Unit: mm

INST.No.INE-475-P1CE Software Version 1.00

-45-

11.2.3 Air-purge hood IR-WEA

11.2.4 Output checker plate IR-WEB (For IRMA51)
IR-WEB3 (For IRMA52)

11. Outside dimensions

31

Ø86

Ø100

Purge air inlet

4-M5 hexagon socket cap screw

*1 Max 300 ± 3 to Min 222 ± 3
*2 Max 156 ± 5

*1: IR-WEA
*2: IR-WEA3

Unit: mm

10

120

65

Unit: mm

INST.No.INE-475-P1CE Software Version 1.00

-46-

11.2.5 Installation adaptor IR-WED1

4-Ø9 (Screw hole for installation)

140

120

35

45

159

100

80

70

(179)

36

6

8

Detector
unit

4-M8 (Mounting hole for the detector unit)

11. Outside dimensions

Unit: mm

INST.No.INE-475-P1CE Software Version 1.00

-47-

11.2.6 Air-cooling box IR-WEX

11. Outside dimensions

6-Ø10 (for installation)

230
200

363
340

(393)

110

(86)

160

330

260

4.5

44

Measurement
window portion of
the detector unit

(Measurement distance 300）

Hood length adjustable

(222 to 300)

Unit: mm

INST.No.INE-475-P1CE Software Version 1.00

-48-

11.2.7 Relaying box IR-WEE

11.2.7-1) IR-WEE1:Steel

11. Outside dimensions

4-Ø8 (installation hole)

(Op

en the door and install.)

250

200

40

40

40

40

80

160

192

(20)

5-Ø22 cable gland
(Grommet with membrane)

130

250

270

290

200

40

40

40 40

80

160

Mounting hole for 4-Ｍ8

Unit: mm

11.2.7-2) IR-WEE2:SUS304

Unit: mm

32-8, KUMANO-CHO, IT ABASHI-KU, TOKYO 173-8632

Telephone: [phone]
Facsimile: [phone]
Web site http://www . chino.co.jp/

INE-475-P1CE Nov-'04 IM Series Infrared Multiple-constituents Analyzer Mirror T ype Multiple-constituents meter/Detector Unit

Models IRMA51, IRMA52 Printed in Japan