IR-GMEG INE-227-1A

IR-GMEG INE-227-1A
INST.No.INE-227-1A
IR-GMEG
Series
MODEL:IR-GMEG1
SETTING DISPLAY UNIT
INE-227-1A
■ PREFACE
Requests and notices
Thank you for your purchase of IR-GMEG Setting Display Unit.
Please read this instruction manual without fail for using this instrument correctly and safely
and also preventing troubles in advance.
Request to designers, instrument controllers, and sale agents
Delivery this instruction manual to the operator of this instrument without fail.
Request to the operator of this instrument
This instruction manual is necessary for maintenance, too. Keep this manual with due
care until the instrument is discarded.
1. For the contents of this manual, alteration is reserved without notice in the future.
2. This manual has been prepared by making assurance doubly sure about its contens
However, if any question arises or if any error, an omission, or other ficiencies
were found, please inform your nearest CHINO’s sales agent of them.
3. You are requested to understand that CHINO is not responsible for any operation
results.
■ FOR SAFE USE
For the purpose of using this unit safely, observe the following cautions for safety during the
operation, maintenance, and repair of this unit without fail.
Take safety measures separately against wrong operation, troubles, and other ircumstances of
this unit.
● The following warning mark is struck to this unit to enable users to use
this unit safely.
This warning mark is struck to the portions being subject to an electric shock
accident. Turn off the power supply of the feed source without fail before starting
wiring, maintenance, and repair.
● This instruction manual uses the following symbol marks for safe use.
Observe this caution item strictly for avoiding a danger, otherwise
negligence of this caution may cause an electric shock accident or
other accidents resulting in operator’s death or injuries.
Observe this caution item strictly for avoiding a danger, otherwise
negligence of this caution maypossibly cause troubles of this unit and
accidents
Observe this caution item strictly, otherwise negligence of this caution
may cause the damage of the unit or measuring errors.
This mark is described in each title covering
instructions.
-F1-
or
INE-227-1A
■ CAUTIONS FOR SAFETY
● Power supply
Make sure that the power voltage of this unit meets the feed power voltage without fail
before feeding power to this unit.
● Protective grounding
Perform the protective grounding without fail before turning on the power supply of this
unit for the purpose of preventing an electric shock accident.
● Necessity of protective grounding
Don’t cut the internal or external protective grounding wire of this unit nor disconnect the
wiring at the protective grounding terminal.
● A defect of protective functions
Don’t operate this unit, if the protective grounding, fuse, or other protective functions
seem to be defective. Check the protective functions for defects before operating this unit.
● Use in a gaseous atmosphere
Never operate this unit at a place where a combustible gas, an explosive gas or their
vapors exist., otherwise a very dangerous accident will occur.
● Never touch the interior by hand.
This unit is internally provided with high-voltage circuits. Never touch the interior by
hand when the voltage is applied to this unit.
● External connections
Perform the protective grounding securely without fail before connecting this unit to a
measuring object and/or an external control circuit.
-F2-
INE-227-1A
Contents
1. Introduction
1
1. 1 General
1. 2 Configuration
2. Model and accessories
2
2. 1 Model
2. 2 Accessories
3. Installation and connections
3.
3.
3.
3.
3.
2
3
4
5
6
3. 1 Setting of DIP switches
3
Installation
Connections
Cautions on connections
Analog output and alarm output
Multi-detector connections
4. Names and functions of component parts
4. 1 Names and functions of component parts
9
5. Operation
5. 1 Check before starting operation
5. 2 Setting of detector numbers
5. 3 Setting of calibration curve
5. 4 Setting of broken line approximation calibration curve
5. 5 Setting of operating conditions
5. 6 Calibration
5. 7 Correction of calibration curve
5. 8 Mode setting
5. 9 External contact input
5.10 Key lock
11
6. Preparation of calibration curves
6. 1 Sampling
6. 2 Sample measurement
6. 3 Preparation of calibration curves
21
7. Check and maintenance
7.
7.
7.
7.
7.
1
2
3
4
5
Periodical check
Self-diagnostic function
Troubleshooting being excluded from self-diagnosis
Maintenance parts
RAM clear
26
8. Specifications
8. 1 Setting display unit
29
1. Read the items marked with
These paragraphs comprise
-C1-
in the title without fail.
and
items.
INE-227-1A
1. Introduction
1.1 General
Setting display unit "IR-GMEG" is combined with infrared moisture meter IR-M □□□□
series. It is connectable to max.9 moisture meter detectors for setting the parameters of
moisture meter detectors variously and indicating the moisture value. It also provides an
external communication, external contact switching, and other functions.
This instruction manual covers the operation method of the setting display unit only.
Please read the instruction manual for [ Instruction manual for infrared moisture meter
IR-M □□□□], too.
1.2 Configuration
−1−
INE-227-1A
2. Model And Accessaries
2.1 Model
● Setting display unit IR-GMEG 1 □ □
External output
1 : 4 to 20mADC (standard)
Communication interface
R : RS-232C (standard)
A : RS-422A
S : RS-485
Optional specifications
Blank: None
X
: Other options
2.2 Accessories
● Setting display unit
Article names
Mounting bracket
Internal unit pull-out tool
Instruction manual
Instruction manual for communication
Inspection certificate
Quantity
1
1
1
1
1
−2−
set
pc.
copy
copy
sheet
Remarks
This manual
INE-227-1A
3. Installation And Connections
3.1 Setting of DIP switches
Set the internal dip switches before mounting this unit.
3.1.1 How to draw out the internal unit
● When the internal unit is not mounted on the panel;
(1) Remove the water-proof packing from
the internal unit lock. Insert the L-part
of the attached internal unit pull-out tool
to the internal unit lock, while holding
the meter.
(2) By deflecting the internal unit pull-out
tool laterally under this condition, the
meter front panel is protruded forward
by 2 to 3mm and the internal unit can
be removed.
(3) After setting the DIP switches, return
the internal unit into the case, and
mount the water-proof packing securely.
● When the internal unit is mounted on the panel;
(1) Remove the water-proof packing from the internal unit lock. Insert the L-part of the
attached internal unit pull-out tool to the internal unit lock, while holding the meter.
(2) By pressing the internal unit pull-out tool downward under this condition, the meter front
panel is protruded forward by 2 to 3mm and the internal unit can be removed.
(3) After setting the DIP switches, return the internal unit into the case, and mount the
water-proof packing securely.
Turn off the feed source power supply without fail before removing the
internal unit.
3.1.2 Setting of DIP switches
Set DIP switches according to the specifications.
DIP switch
No
1
2
3
4
Functions
No.
Not
Not
Not
of connected detector
used
used
used
SW
OFF
1 unit
−3−
ON
2 or more units
Initial
setting
OFF
OFF
OFF
OFF
INE-227-1A
3. Installation And Connections
3.2 Installation
This unit is mounted on a panel (instrument panel).
Mount the unit to the panel by fastening two attached mounting brackets until they turn idly.
● External dimensions and panel cutout
● Panel mounting method
Don't mount the unit at the following places
(1)A place being fully filled with dust particles, corrosivegases,
etc.
o
(2)A place where
the
ambient
temperature
is
higher
than50
C
or
lower than 0oC
(3)A wet place or a place where the ambient temperature changes
abruptly
(4)A place near a strong power circuit or a place subjected to
noticeable induction interference
(5) A place subjected to vibrations and/or impacts
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INE-227-1A
3. Installation And Connections
3.3 Connections
The terminal board is mounted on the rear panel. Turn off the feed source power supply and
connect cables as illustrated below.
Turn off the feed source power supply without fail for the purpose of
preventing an electric shock accident before connecting the power terminals.
● Contact input terminals
Terminal
No.
14
15
16
17
18
24
25
26
27
31
32
33
34
35
Items
BCD IN 1
BCD IN 2
BCD IN 4
BCD IN 8
HEAD/CH
BCD IN 1*10
BCD IN 2*10
BCD IN 4*10
BCD IN 8*10
K2
K1
PRESET
HOLD
COM
−5−
Contents
Detector number/calibration curve number 1 Input
Detector number/calibration curve number 2 Input
Detector number/calibration curve number 4 Input
Detector number/calibration curve number 8 Input
Detector number/calibration curve number switching
Detector number/calibration curve number 1*10 Input
Detector number/calibration curve number 2*10 Input
Detector number/calibration curve number 4*10 Input
Detector number/calibration curve number 8*10 Input
No. 2 calibration is done when the contact turns on.
No. 1 calibration is done when the contact turns on.
Preset output is sent when the contact turns on.
Hold when the contact turns on.
Contact common terminal
INE-227-1A
3. Installation And Connections
3.4 Cautions on connections
Be careful with the following cautions.
● Termination of wiring
Use crimp style terminals each having an insulation sleeve so as to prevent a slip-out failure
and an inter-wire contact. (M3.5 terminal screws are used.)
● Mounting of power switch and fuse
This unit is not provided with a built-in power supply and fuse. Mount them externally.
● Power supply
This unit uses a free power supply. However, don’t use the following power supplies
(1) Power supply whose voltage fluctuates noticeably
(2) Power supply whose waveform is distorted noticeably
● Noise source
Separate the unit from a strong power circuit and a powerful noise generation source as far
as possible.
3.5 Analog output and alarm output
This unit is applicable to multi-detectors and it can connect plural moisture meter detectors.
Detector outputs can be set by DIP switches as follows. (For the setting of DIP switches,
see [3.1 Setting of DIP switches])
Output terminals
OUT1
OUT2
AL1
AL2
ERROR
Detector
Detector
Detector
Detector
Detector
No.
No.
No.
No.
No.
Setting of DIP switches
1 detector
2 or more detectors
1 analog output
Detector No. 1 analog output
1 analog output
Detector No. 2 analog output
1 higher-limit alarm
Detector No. 1 higher-limit alarm
l lower-limit alarm
Detector No. l lower-limit alarm
1 self-diagnostic error
Self-diagnostic error of all
connected detectors
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INE-227-1A
3. Installation And Connections
3.6 Multi-detector connections
Multi-detectors can be connected in two ways. Don't overlap any detector numbers of
individual detectors before turning on the power supply of the setting display units in these
connection methods.
For the setting method of detector numbers, see the instruction manual for moisture meter.
3.6.1 Method of using the relaying box
Detctor
Relaying box(A power supply unit is built in.)
IR-WERT*
2-conductor
twisted
cable(with shild)
IR-WERT*
2-condutor
twisted
cable(with shield)
IR-WERT*
2-conductor
twisted
cable(with shield)
100-240V AC
Setting diplay unit
Be careful with the following cautions wheen connecting cables.
1.Separate the cables from the induction heating oscillator and power line.
2.Keep cables free of dposit of water, oil,etc.
3.Don't bend any cables extrmely nor apply any excessive force to them.
4.Protect them with a conduit when they are cpnnected permanently.
1. Shorten the asterisked cables as much as possible.
4. For the connection method of the relaying box, refer to [Instruction
manual of relaying box].
−7−
INE-227-1A
3. Installation And Connections
3.6.2 Method without using any relaying box
Detector
Power supply unit
IR-WERT*
Taping
〔Connect the power wire P+(red), P-(blue),
and G(external shield wire)of exclusive cable.
Connect signal wires SA8black),SB(white), and
2-conductor wisted
SG(shield brown) to the 2-conductor twist
cable (with shield)
cable(with shield).〕
〔Fasten the signal wires SA(black),
SB(white), and SG(shield brown)
100-240V AC
of exclusive cable.
Setting display unit
IR-WRT and SA,SB, and SG of the
2-conductor twisted cable together
at the terminal board of the detector.〕
Be careful with the following cautions wheen connecting cables.
1.Separate the cables from the induction heating oscillator and power line.
2.Keep cables free of dposit of water, oil,etc.
3.Don't bend any cables extrmely nor apply any excessive force to them.
4.Protect them with a conduit when they are cpnnected permanently.
1. Shorten the asterisked cables as much as possible.
4. For the connection method of the relaying box, refer to [Instruction
manual of relaying box].
−8−
INE-227-1A
4.Names And Functions Of Component parts
4.l Names and functions of component parts
● Data display
Indicates the moisture value under the measuring condition and the setting data under the
setting condition. Indicates an error number when an error occurs.
● Detector No. display
Indicates the present detector number of the moisture meter. When the detector number has
been changed, the moisture meter data of its detector number is indicated.
● Calibration curve No. display
Indicates the calibration curve number under the measuring condition and the calibration
curve setting condition. Indicates a mode number when setting the mode or a time constant
when setting the time constant.
The first-digit decimal point lights under the key lock condition.
−9−
INE-227-1A
4.Names And Functions Of Component parts
4.l Names and functions of component parts
● Setting lamps
HEAD
CH
MODE
T
Lights
Lights
Lights
Lights
under
under
under
under
the
the
the
the
detector number setting condition.
calibration curve number setting condition.
mode number setting condition.
time constant setting condition.
● Measuring conditions lamps
AH
AL
HOLD
REMOTE
REAL
PRESET
Lights
Lights
Lights
Lights
Lights
Lights
under
under
under
under
under
under
the
the
the
the
the
the
higher-limit alarm condition
lower-limit alarm condition.
hold condition.
calibration curve number remote setting condition.
real (without smoothing) measuring condition.
preset output condition.
● Setting keys
HEAD
: Used for setting detector numbers.
CH
: Used for setting calibration curve numbers.
MODE
: Used for setting mode numbers.
HOLD/-
: Turns on or off the hold under the measuring condition.
Serves as a (-) input key under the setting condition.
: Turns on or off the preset output under the measuring condition.
Serves as a 7 input key under the setting condition.
: Switches the remote/local modes under the measuring condition.
Serves as an 8 input key under the setting condition.
: Switches the smoothing/real modes under the measuring condition.
Serves as a 9 input key under the setting condition.
: Used for setting the time constant under the measuring condition.
Serves asa decimal point input key under the setting condition.
: 0 to 6 input keys
: Used for selecting the setting condition or switching the setting screen.
PRESET/7
R/L/8
S/R/9
T/.
0 to 6
SEL
CLR
ENT
: Used for clearing data during setting.
Data are cleared starting with the lower order digit, each time this key
is pressed once.
: Used for entering a set value.
− 10 −
INE-227-1A
5.Operation
5.1 Check before starting operation
Check the following three items before turning on the power supply.
(1)Have the DIP switches been set. (See [3.1 Setting of DIP switches])
(2)Are the connections correct. (See [3.3 Connections])
(3)Have the detector numbers been set in case of multi-detector connections?
(See [Instruction manual for infrared moisture meter IR-M □□□□])
Turn on the power supply of the setting display unit together with the
detector power supply or after the detector power supply.
If it is turned on before turning on the detector power supply, the detector
is not recognized to cause Er18 error (Detector number error).
5.2 Setting of detector numbers
When turning on the power supply, moisture meter data of the detector number indicated on
the detector number display " HEAD " is indicated.
For changing the detector number, set it according to the following procedure.
(1)Press HEAD key, setting lamp HEAD
lights to be ready for setting the detector
number.
(2)Input a detector number by numeric keys
1 to 9 .
(3)By pressing ENT
key, the moisture
meter data of the changed detector number is
indicated. In this case, the calibration curve
number and moisture value display conform
to the changed setting conditions of the
moisture meter. (Time constant, No. of
decimal digits of moisture display, etc.)
− 11 −
INE-227-1A
5.Operation
5.3 Setting of calibration curves
The output characteristic of the infrared moisture meter depends upon the measuring objects.
It may also change according to the process conditions and sample moisture measuring
conditions. It is necessary for accurate moisture measurement to perform a sample test
every measuring object and obtain the correlation between the moisture value (%H2O)
obtained by the drying method or other measuring methods and the absorbance "x"
measured by the moisture meter (this is called calibration curve). This paragraph describes
the calibration curve data setting method, assuming that calibration curves are already
obtained.
If the calibration curves are not obtained yet, refer to [6. Preparation of calibration curves].
5.3.1 Setting data
Set the following data for setting calibration curves.
Data name
Display
Setting range Initial value
Calibration curve No.
CH
Polynomial coefficient a0
A0
Polynomial coefficient a1
A1
Polynomial coefficient a2
A2
Polynomial coefficient a3
A3
Correction expression coefficient b0 b0
Correction expression coefficient b1 b1
Output lower-limit moisture
Lo
1 ∼ 99
0 ∼ ±9999.9
0 ∼ ±9999.9
0 ∼ ±9999.9
0 ∼ ±9999.9
0 ∼ ±9999.9
0 ∼ ±9999.9
0 ∼ 9999.9
1
0.0000
0.0000
0.0000
0.0000
0.0000
1.0000
0.00
Output higher-limit moisture
Lower-limit alarm moisture
Higher-limit alarm moisture
Preset moisture
0∼
0∼
0∼
0∼
100.00
0.00
100.00
0.00
Hi
AL
AH
PS
9999.9
9999.9
9999.9
9999.9
Remarks
Effective numeric: 5 digits
〃
〃
〃
〃
〃
〃
For the decimal digits, see the
specification.
〃
〃
〃
〃
● Calibration curve numbers
An optional number of 1 to 99 can be designated as the calibration curve number.
It is designated sequentially from 1 usually.
● Polynomial coefficients "a0 to a3 "
Assume that the calibration curve is represented by a polynomial of degree three or less as
shown below.
y = a3x3 + a2x2 + a1x + a0
where, "y" is the moisture value (%H2O) and "x" is the absorbance (CH0 data of this
moisture meter).
● Correction expression coefficients "b0 to b1"
These coefficients are provided for primary expression correction with reference to moisture
value "y". Assuming that the moisture value after correction be "Y", we obtain;
Y = b1y + b0
● Output lower-limit moisture, output higher-limit moisture
These moisture values serve as the output lower-limit and output higher-limit on the analog
output scaling. These values are scaled to be 4mA at the output lower-limit moisture and
20mA at the output higher-limit moisture.
− 12 −
INE-227-1A
5.Operation
5.3.1 Setting data
● Lower-limit alarm moisture, higher-limit alarm moisture
The lower-limit alarm occurs if a measured value is lower than the lower-limit alarm
moisture, while the higher-limit alarm occurs if a measured value is higher than the
higher-limit alarm moisture.
● Preset moisture
By turning on the preset output, the moisture value being set as preset moisture is displayed
and output.
5.3.2 Setting method
(1) Set a detector number.
HEAD
ENT
(2) By pressing SEL key for 2 seconds, the
calibration curve number becomes CH to
be ready for setting the calibration curve.
(3) Set a calibration curve number.
ENT
(4)By pressing
SEL
key, the setting
condition of polynomial coefficient a0 is
selected. Set the coefficient.
(5)Select the setting condition of the next data
by pressing SEL key.
(6)Set all setting data by repeating the above
procedure.
(7)After the above setting, return the unit to
the measuring condition by pressing the
SEL key for 2 seconds.
The unit returns to the measuring condition
automatically, if no key operation is done
for one minute.
− 13 −
INE-227-1A
5.Operation
5.4 Setting of broken point approximation calibration curve
If a calibration curve is obtained by a graph but it is not represented by a polynomial of
degree three or less, the calibration curve can be approximated by broken lines.
5.4.1 Preparation of broken point data
(1)Assume that the calibration curve graph is
as shown in the following figure.
(2)Approximate the knee point data
suitably dividing the calibration curve.
by
(3)In this case, the first and last knee point
should sufficiently include the measuring
range. Max. 20 knee points including the
first and last points can be plotted.
Determine intermediate knee points
suitably according to the approximation
accuracy.
(4)Assume that the knee point data obtained as
above are as shown below.
First knee point d1: (X1,Y1)
d2: (X2,Y2)
Last knee point dn: (Xn,Yn)
↑
Data No.
5.4.2 Knee point setting data
Set the following data for setting the broken point approximation calibration curve.
Data name
Calibration curve
number
No. of data
Data number
Sample data xn
Sample data yn
R e g r e s s i o n / b r o k en
line
Standard deviation
Display
CH
Setting range
1~99
Initial value
1
n
dn
Hn
yn
Pb
3~20
1~20
0~ 9999.9
0~ 9999.9
1~4
3
1
0.0000
0.0000
1
Sd
0~ 999.99
0.0000
Remarks
Effective numeric: 5 digits
Effective numeric: 5 digits
1~3: Polynomial degree (regression)
4:Knee point data
Setting is not required for knee point
data approximation
● Calibration curve numbers
Optional numbers can be designated out of 1 to 99 optionally as calibration curve numbers.
However, the calibration numbers are sequentially designated by starting them with 1
usually.
− 14 −
INE-227-1A
5.Operation
5.4.2 Knee point setting data
● No. of data
No. of knee point data
Max. 20 points
● Data number, sample data xn, sample data "yn"
Input the knee point data obtained by [5.4.1 Preparation of knee point data].
● Regression/broken line
Obtain the polynomial of the degree by regression operation from the above sample data after
inputting 1 to 3. Approximate the knee point data, if 4 is input.
● Standard deviation
A standard deviation is displayed when regression is designated.
necessary for knee point data approximation.
This setting is not
5.4.3 Setting method
(1) Set a detector number.
HEAD
ENT
(2)By pressing SEL key and CH key
together for 2 seconds, the calibration
curve number display becomes CH to be
ready for setting sample data.
(3)Set a calibration curve number.
ENT
(4)By pressing
SEL
key, the setting
condition of No. of data n is selected. Set
No. of data.
(5)Select the setting condition of the data
number by pressing SEL key.
(6)By pressing SEL key after the above
setting, the setting condition of sample data
xn is selected.
(7)By pressing SEL key after the above
setting, the setting condition of sample data
yn is selected.
(8)By pressing CH key after the above
setting, the unit returns to the setting
condition of data number in (5). Set the
next data number.
(9)Set all broken point data by repeating the
above procedure. Press SEL key after
setting broken point data.
(10)Input "4" in regression/knee pointselection.
(11)Return the unit to the measuring condition by pressing SEL key for 2 seconds after the
above setting. The unit returns to the measuring condition automatically if key operation
is not executed for one minute.
− 15 −
INE-227-1A
5.Operation
5.5 Setting of operating conditions
Set the calibration curve number, time constant, and other operating conditions of moisture
meter.
● Setting of calibration curve numbers
Set the calibration curve numbers according to the measuring objects.
CH
ENT
● Time constant
If a measured value fluctuates noticeably, the signal can be set to be dull by delaying the
response of this moisture meter. Set the smoothing time (equivalent to the time constant of
analog instruments) every 0.1sec in case of shorter than 10 seconds or every second in case
of longer than 10 seconds.
T/.
ENT
● Hold ON/OFF
Press HOLD/- key when holding a measured value. Analog output is also held.
The hold is reset by pressing HOLD/- key again.
● Preset output ON/OFF
By turning on the preset output, this moisture meter indicates a preset moisture value.
The analog output corresponds to the preset moisture value.
For turning on the preset output, press PRESET/7 key. The preset output is reset by
pressing PRESET/7 key again.
● No. of decimal digits in moisture display
The number of decimal digits can be set for easily monitoring the display.
(1)Set the calibration curve number to 0.
CH 0 ENT
(2)Select mode 14.
MODE 1
4
ENT
(3)Set No. of decimal digits.
ENT (Setting range: 0 to 4)
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5.Operation
5.6 Calibration
Carry out the calibration by the output checker plate. For using this moisture meter
accurately, calibrate it periodically once every 3 months or so.
(1) Preheat the unit for longer than one hour
by supplying power to the unit before
starting calibration.
(2)Set the calibration curve number to 0.
By this setting, absorbance "x"
displayed as data.
CH
0 ENT
is
(3) Mount the output checker plate to the tip
of the air purge hood, and face No. 1 side
of output checker plate.
Note:For transparent type fiber(IR-2X5XX)
Empty the inside of measuringcell by
disassembling and cleaning it.
(4) Carry out the calibration by following keys
operation. Make sure that the absorbance
"x" is within 0.0000 0.0010.
Calibration is completed.
MODE
1 ENT
5.7 Correction of calibration curve
If the actual moisture value is different from the moisture value of the preset calibration
curve due to the difference of the on-line and off-line and other causes, correct the
correction expression coefficients "b0", " b1" in [5.3 Setting of calibration curves].
5.7.1 In case of shift correction only
Shift correction is usually done with "b0" only.
[Example] Assume that the measured value of the moisture meter is 15 (%H2O) before
correction and the actual moisture value is 13 (%H2O), for example, set
"b0"= -2(%H2O).
5.7.2 In case of zero and span correction
Since this moisture meter provides the regression operation function by the method of least
square, the correction expression can be obtained by the regression operation if there is a
difference between measured value "y" of the moisture meter and actual moisture value
"Y".
Assume that "n" groups ("yn", "Yn") of measured values "y" of moisture meter and actual
moisture values "Y" of sample data exist. ("n": Less than 20 inclusive)
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5.Operation
5.7.2 In case of zero and span correction
(1)Set a detector number.
HEAD
ENT
(2)By pressing SEL key and CH key
together for 2 seconds, the calibration
curve number display becomes CH to be
ready for setting sample data.
(3)By pressing MODE key, the sample data
setting condition of the correction
expression is selected.
(4) Set a calibration curve number.
ENT
(5)By pressing
SEL
key, the setting
condition of No. of data n is selected. Set
No. of data.
(6) Select the setting condition of the data
number by pressing SEL key.
(7) By pressing SEL key after the above
setting, the setting condition of sample
data "yn" is selected.
(8)By pressing SEL key after the above
setting, the setting condition of sample
data "Yn" is selected.
(9)By pressing CH key after the above
setting, the unit returns to the setting
condition of data number in (6). Set the
next data number.
(10)Set all sample data by repeating the above
procedure. Press SEL key after setting
sample data.
(11)The correction expression can be obtained
by inputting "1" in regression/broken line
selection.
(12)By pressing SEL key, the standard deviation of the above correction expression
(approximation accuracy of correction expression) is displayed.
(13)Return the unit to the measuring condition by pressing SEL key for 2 seconds after
the above setting. The unit returns to the measuring condition automatically if key
operation is not executed for one minute.
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INE-227-1A
5.Operation
5.8 Mode setting
For setting various operating conditions of the moisture meter, use the mode setting.
This mode setting can be done only when the calibration curve number is "0".
For terminating the mode setting, press SEL key for 2 seconds. If no operation is done for
one minute, the unit returns to the measuring condition automatically. If an invalid mode
number has been input, "Er" is displayed for one second in the calibration curve number
display, and the unit returns to the measuring condition automatically.
● Calibration
This is used for calibrating the moisture meter. Refer to [5.6 Calibration].
MODE 1 ENT : No. 1 calibration
MODE 2 ENT : No. 2 calibration
(Note ) No.2 calibration is not done usually. (It depends upon the setting of DIP switches of
the detector.)
● Weight "α", calibration constant
Weight "α" is the value for determining the ratio of two comparative wavelengths in
3-wavelength operation. The calibration constant is obtained by the above calibration.
MODE 6 ENT
AF: Weight α
k1: Calibration constant during No. 1 calibration
k2: Calibration constant during No. 2 calibration
(Note) No.2 calibration is not done usually. (It depends upon the setting of DIP switches of
the detector.)
● No. of decimal digits of moisture display
The number of decimal digits can be set for easily monitoring the display.
MODE 1 4 ENT
ENT (Setting range 0 to 4)
● Calibration curve remote input Binary/BCD
Whether external contact input data are processed by binary codes or BCD codes can be
selected by calibration curve remote setting.
MODE 1 7 ENT
ENT (0:Binary 1: BCD Initialize: BCD)
● Calibration curve data clear
This is used for clearing calibration curve data.
MODE 1 8 ENT
ENT (Calibration curve number [][] is cleared.
HOLD/ENT (Calibration curve No. [][] to [][] are cleared)
● Communication speed, parity, data length, stop bit length
These data are provided as the communication conditions setting data when connecting the
moisture meter to the personal computer, sequencer, etc.
MODE 8 0 ENT
SP :Communication speed (Setting range 1:1200 to 5: 19200)
P :Parity (Setting range 1:nonE 2:odd 3:EVEn)
d :Data length (Setting range 7 to 8)
Sb :Stop bit length (Setting range 1 to 2)
bC :Whether BCC is provided or not (Setting range 0:no 1:YES)
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INE-227-1A
5.Operation
5.9 External contact input
Calibration curve number setting and other operation can be done by using external
contacts.
● Detector number setting/calibration curve number setting
By setting numerics to the BCD IN terminal in either BCD code or binary code, the
detector number and calibration curve number can be set.
The BCD code is initialized. For setting numerics in the binary code, change the code by
mode setting. [See 5.8 Mode setting]
When HEAD/CH terminal is turned on, the numeric at the BCD IN terminal is set as a
detector number. When HEAD/CH terminal is turned off, the numeric at the BCD IN
terminal is set as a calibration curve number.
● Calibration
When k1 terminal is turned on, No. 1 calibration is done. When k2 terminal is turned on,
No. 2 calibration is done.
However, No.2 calibration is not done usually. (It depends upon the setting of DIP switches
of the detector.)
● Preset
The preset output condition is selected by turning on the PRESET terminal and reset by
turning off the PRESET terminal.
● Hold
The hold condition is selected by turning on the HOLD terminal and reset by turning off
the HOLD terminal.
5.10 Key lock
The key lock condition is selected and the 1st digit decimal point of the calibration curve
number display lights by pressing MODE and SEL keys together for 2 seconds when
the calibration curve number is other than 0. No key input is acceptable under this
condition, but the calibration curve data can be checked.
For resetting the key lock
condition, press MODE and SEL keys together for 2 seconds.
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INE-227-1A
6.Preparation Of Calibration Curves
6.Preparation of calibration curves
The output characteristics of the infrared moisture meter depends upon the measuring
objects. Also, the output characteristics may also change according to the process conditions
and moisture measuring conditions of samples in case of certain measuring objects. It is,
therefore, necessary for accurately measuring the moisture to carry out the sample test every
measuring object in advance and obtain the correlation between the moisture value (%H2O)
obtained by the drying method or other measuring methods and the absorbance x measured
by the moisture meter (this is called calibration curve ).
This chapter describes the measurement of the moisture value by the drying method.
However, the method of obtaining the calibration curves remains unchanged even if the
moisture value is measured by the Karl Fischer method or other methods.
6.1 Sample preparation
6.1.1 In case of pulverulent or granular samples
(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 dry sample every 100 to 200cc into 5 to 6 samples separately, although it is
recommendable to divide the sample into many samples.
(4)Moisten each of these 5 to 6 samples bit by bit so that its moisture divides the measuring
range almost evenly.
(5)Stir each moistened sample sufficiently, and put it into a polyethylene bag.
(6)Leave each sample for about 2 days until its moisture is stabilized.
If a sample cannot be heated or if it is hardened by moistening to be not
measurable, adjust the moisture correspondingly according to the procedure
in case of a paper shown below.
6.1.2 In case of paper (sheet substance)
(1)Cut nine sheets of samples each having a size of about 100 x 100mm by using a cutter or
the like.
(2)Divide nine cut samples into 3 groups, each consisting of 3 sheets and adjust the moisture
under the following conditions, respectively.
Drying:
Leave the samples in a desiccator containing silica gel for 2 days.
In the air: Leave the samples in an indoor atmosphere. In case of paper, the moisture
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
paper, the moisture becomes 8 to 9%H2O usually or about 11%H2O at the most.
Wear clean gloves when handing samples so as not to touch them by
naked hands directly. It is recommended for convenient measurement to
mark the samples in such a way as their front and rear surfaces as well as
the flow directions can be known.
− 21 −
INE-227-1A
6.Preparation Of Calibration Curves
6.2 Sample measurement
Be careful with the following cautions during measurement.
(1)Place a sample at the same position as in actual measurement, set the calibration curve
number to 0, and read the display (absorbance "x").
(2)Perform the measurement rapidly.
(3)The visible light is radiated form the detector. Make sure that the sample covers the
measuring area completely.
6.2.1 In case of pulverulent or granular samples
(1)Prepare the trays (Diameter 100 to 150mm φ, Depth 20mm or so) by the same quantity as
the measuring sample quantity.
(2)Weigh the weight w0 of each sample.
(3)Spread the sample being sealed in the polyethylene bag on the tray in such a way as the
tray bottom is fully covered with a flat sample surface.
(4)Put the tray at the measuring position, set the calibration curve to 0, and read the display
(absorbance "x" ). If the measured value cannot be read easily, delay the response by
smoothing function.
(5)Stir the sample rapidly with a spoon and measure it again. Repeat this measurement 2 or
3 times per sample.
(6)Weigh the weight w1 of the tray together with the sample.
(7)Perform the same measurement sequentially about all samples.
(8)Put each sample together with its tray into a dryer, and dry it out to the absolute dry
condition (for longer than 2 hours at 105 to 110oC usually).
(9)Cool down the sample after drying, and weigh the weight w2 of each tray together with the
sample.
(10)Record the measured value in the following table every measurement, and obtain the
moisture value by the following formula.
W1-W2
×100(%H2O)
W1-W0
NO.
Absorbance x
w0
w1
1
2
3
x1
x2
x3
Moisture value
(%H2O)
y1
y2
y3
n
xn
yn
− 22 −
w2
INE-227-1A
6.Preparation Of Calibration Curves
6.2.2 In case of paper (sheet substance)
(1)Weigh the weight w1 of the sample before measurement.
(2)Hold a sample by a paper holder, put it at the measuring position by tilting it at 15o, set
the calibration curve number to 0, and read its display (absorbance x). In this case, set
the front and rear surfaces and flow direction of the samples to meet each other.
(3) Weigh the weight w2 of the sample after measurement. Perform the measurement from (1)
to (3) as soon as possible.
(4)Perform the same measurement sequentially about all samples.
(5)Put each sample together with its tray into a dryer , and dry it out to the absolute dry
condition (for 2 hours at 105oC usually).
(6)Cool down all samples in a desiccator containing silica gel after drying.
(7) Weigh the weight w3 of each sample.
(8)Record the measured value in the following table every measurement, and obtain the
moisture value by the following formula.
(W1+W2)/2-W3
×100(%H2O)
(W1+W2)/2
NO.
Absorbance x
w1
w2
w3
1
2
3
x1
x2
x3
Moisture value
(%H2O)
y1
y2
y3
n
xn
yn
6.3 Preparation of calibration curves
Obtain a calibration curve by plotting data obtained by the above measurement on a graph.
Plot the absorbance "x" of the moisture meter on the "x-axis" and also plot the moisture
value (%H2O) on the "y-axis". Obtain a curve to minimize errors from this graph as a
calibration curve.
The curve to minimize errors is normally obtained by the regression operation.
If a graph contains inflection points, the knee point approximation is used.
The following description covers the method of obtaining the calibration curve by the
regression operation. For the broken line approximation, refer to [5.4 Setting of knee point
approximation calibration curve].
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INE-227-1A
6.Preparation Of Calibration Curves
6.3.1 Calculation of regression formula
Since this moisture meter provides the regression operation function by the method of least
square, the polynomials of degree one to three can be obtained by inputting data obtained in
[6.2 Sample measurement].
Assume that sample data ("xn", "yn") exist by n groups. ("n": Less than 20 inclusive)
(1) Set a detector number.
HEAD
ENT
(2)By pressing SEL key and CH
key
together for 2 seconds, the calibration
curve number display becomes CH to be
ready for setting sample data.
(3)Set a calibration curve number.
ENT
(4)By pressing
SEL
key, the setting
condition of No. of data n is selected. Set
No. of data.
(5)Select the setting condition of the data
number by pressing SEL key.
(6)By pressing SEL key after the above
setting, the setting condition of sample
data xn is selected.
(7)By pressing SEL key after the above
setting, the setting condition of sample
data yn is selected.
(8)By pressing CH key after the above
setting, the unit returns to the setting
condition of data number in (5). Set the
next data number.
(9) Set all sample data by repeating the above
procedure. Press SEL key after setting
sample data.
(10) The polynomial of the corresponding
degree can be obtained by inputting "1" to
"3" in regression/knee point selection.
(11)By pressing SEL key, the standard
deviation of the above regression formula
(approximation accuracy of regression
formula) is displayed.
(12)Return the unit to the measuring condition
by pressing
SEL key for 2 seconds
after the above setting. The unit returns to
the measuring condition automatically if
key operation is not executed for one
minute.
− 24 −
INE-227-1A
6.Preparation Of Calibration Curves
6.3.2 Regression formula check
For checking the coefficients of the regression formula obtained above, observe the
following procedure.
(1)Select the calibration curve setting
condition by pressing SEL key for 2
seconds.
(2)Set the calibration curve number for which
the regression formula has been obtained.
(3)By pressing SEL key, coefficient a0 of
the regression formula is displayed.
(4)By pressing SEL key, "a1" to "a3" are
displayed in the same way.
(5)After check, return the unit to the
measuring condition by pressing the SEL
key for 2 seconds. The unit returns to the
measuring condition automatically, if no key
operation is done for one minute.
− 25 −
INE-227-1A
7.Check And Maintenance
7. Check and maintenance
7.1 Periodical check
Perform the following check periodically or according to the circumstances.
● Looseness of connections
Check the detector, setting display unit, and receiving instrument for looseness of terminals.
● Calibration
Perform the calibration once every 3 months or so by using the output checker plate.
7.2 Self diagnostic function
This moisture meter provides the self diagnostic function, and an error number is displayed
in the occurrence of an error. Error numbers are applicable to the detector and setting
display unit in common.
Error
No
-----
----Er01
Er02
Er03
Er04
Er05
Er06
Er07
Er10
Er11
Er12
Er13
Items
Contents
Remedial measures
H i g h e r - l i m i t Measured value exceeds the Check calibration curve
over-range
display range.
data.
Check the output by the
output checker plate.
L o w e r - l i m i t Measured value is lower Check calibration curve
over-range
than the display range.
data.
Check the output by the
output checker plate.
Calibration data Calibration data breakage
RAM clear
error
RAM error
Detector RAM data breakage RAM clear
Abnormal motor Motor stop or abnormal Motor exchange
rotation
rotation
L a m p p o w e r Lamp power supply was Replace the lamp power
down
broken.
supply.
Abnormal A/D
Over-range of A/D
Check the output by the
output checker plate.
A r i t h m e t i c Occurrence of overflow in Check the output by the
operation error
arithmetic operation
output checker plate.
Abnormal
Element temperature is Send back for repair.
element
abnormal.
temperature
Calibration curve Calibration curve data are Reset calibration curve data
data error.
improper.
B r o k e n l i n e Absorbance x is out of the Reset the broken line
a p p r o x i m a t i o n s c o p e o f b r o k e n l i n e approximation data.
error
approximation.
Excessively high Ambient temperature of L o w e r t h e a m b i e n t
ambient
detector is high.
temperature.
temperature
Excessively low Ambient temperature of R a i s e t h e a m b i e n t
ambient
detector is low.
temperature.
temperature
− 26 −
Self-diagnostic
errors
INE-227-1A
7.Check And Maintenance
7.2 Self diagnostic function
Error
Items
No
Er14
Excessively high
sample
temperature
Er15
Excessively low
sample
temperature
Er16
Low reflection of
sample
Er17
Er18
Er99
Contents
Sample temperature is
higher than the correction
range.
Sample temperature is
lower than the correction
range.
Reflectance of sample is
low or the lamp is broken.
Remedial measures
Self-diagnost
ic errors
Widen the correction
range
Widen the correction
range
Shorten the distance to
the sample
Replace the lamp, if
broken.
Regression
An error occurs in
Check calibration curve
operation error
regression operation
sample data.
Detector number Non-co nnected detector Set the detector number
error
number is set.
again.
RAM error
Setting display unit RAM
RAM clear
data breakage
(Note) For the items marked with ○ in the self-diagnostic error column, a self-diagnostic error
alarm output is sent from the setting display unit.
7.3 Remedial measures to the troubles which are not contained in self
diagnosis
If a trouble occurred, take remedial measures referring to the corresponding items of this
instruction manual after checking the following points. For moisture meter detector errors,
see [Instruction manual for infrared moisture meter IR-M □□□□].
●
(1)
(2)
(3)
(4)
(5)
A measured value remains unchanged
Is the hold turned on?
Is the preset turned on?
Are calibration curve data correct?
Turn off the power supply once and turn it on again.
Does the display change when checking the display with the calibration curve number 0
by using the output checker plate?
(6) Try clearing RAM if no change occurs. If the trouble cannot be recovered yet, send back
for repair.
● Measured values fluctuate
(1)Is the measuring surface free of being uneven?
(2)Does the detector face the measuring position correctly without showing the bottom face
of the belt conveyor or the like?
(3) Is the disturbance light radiated onto the measuring surface?
(4)Is the smoothing time suitable? Certain smoothing time is necessary for stable
measurement.
(5)Is a noise source absent from the vicinity of detector or connection cables?
(6) Does the display fluctuate when checking the display with calibration curve number 0 by
using the output checker plate?
(7) Clear RAM, if display fluctuates. If the trouble cannot be recovered yet, send back for
repair.
− 27 −
INE-227-1A
7.Check And Maintenance
7.3 Remedial measures to the troubles which are not contained in self
diagnosis
●
(1)
(2)
(3)
(4)
(5)
Measured value is slightly higher than or lower than the actual value
Is the calibration curve number correct?
Are calibration curve data correct?
Is the hold or preset turned on?
Does the detector face the measuring position correctly?
Is the detector cover glass surface free of dirt and fogging?
7.4 Maintenance parts
Part name
Quantity
Lithium battery 1
(Note)
Exchange intervals
3 to 10 years
Remarks
10 years under normal operation
or 3 years when no power is
applied
(Note) For replacing the lithium battery, it is taken back by our company. Please contact
our agent or sales office.
7.5 RAM clear
If a trouble cannot be repaired by all means, try clearing the RAM contents.
(1)Turn on the power supply by pressing MODE and CLR keys together.
(2)The RAM contents have been initialized. Set data again.
− 28 −
INE-227-1A
8.Specifications
8. Specifications
8.1 Setting display unit
IR-GMEG1 □
Item
Contents
Detector input
RS485 Max. 9 detectors can be connected
Analog output:
4 to 20mA DC (Load resistance: Lower than 500 Ω)
2 outputs
Output accuracy:
±0.5%FS
Communication output:
RS232C, RS485 or RS422A is also available,
if designated so
Output update cycle:
28 x ( No. of connected detectors ) msec
Display:
Data
Calibration curve No.
Detector number
External setting:
Detector number,
Calibration curve number,
Calibration,
Preset output,
Hold setting by external contacts
Alarm:
Higher-limit/lower-limit alarm
Contact 2 outputs (common)
Self-diagnosis:
Contact 1 output
Working temperature range:
0 to 50 ℃
Power supply:
100 to 240VAC 50/60Hz
LED 5 digits
LED 2 digits
LED 1 digit
Allowable voltage fluctuations +10% to (-)15% of the rated value
Power consumption:
Max. about 15VA
Case:
ABS resin Front panel: Drip-proof structure
(Conforming to IP65)
Mounting method:
Panel flush-mount
Weight:
Approx. 600g
Accessories:
Mounting brackets
1 set
Internal unit pull-out tool 1 pc.
− 29 −
INE-271-1A Mar-99 IR-GMEG1
− 30 −
Printed in Japan (m)
− 31 −
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