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4 to 20 mA
R
LIGHT
TRANSMITTE
Model : TR-LXT1A4
Your purchase of this LIGHT TRANSMITTER marks a step
forward for you into the field of precision measurement.
Although this TRANSMITTER is a complex and delicate
instrument, its durable structure developed. Please read the
following instructions carefully and always keep this manual
within easy reach.
OPERATION MANUAL
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Caution Symbol
T
T
T
Caution :
* Do not apply the overload
voltage, current to the input
terminal !
* Power off before
@ Disconnecting the " Power Source "
from the " AC Power Input
erminal "
@ Disconnecting the " Output Signal
Wires " from the " Signal Output
erminals "
aking away the " Sensor Plug "
@
away from the " Sensor Plug
Input Terminal ".
* Cleaning - Only use the dry
cloth to clean the plastic case !
Environment Conditions
* Installation categories II.
* Pollution Degree 2.
* Altitude up to 2000 meters.
* Relative humidity 80% max.
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TABLE OF CONTENTS
1. SPECIFICATIONS.....................................................1
.
.
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.
.
.
.
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T
2. INSTALLATION........................................................3
3. FRONT PANEL DESCRIPTION...................................
3-1 Zero Adjust VR........................................................
3-2 Span adjust VR........................................................5
3-3 Power Indicator.......................................................5
3-4 Probe Input Socket..................................................
3-5 Transmitter Output Connector...................................
3-6 Wires Layout Socket................................................
3-7 Probe Plug..............................................................
3-8 Light Sensing Probe.................................................
3-9 Range Switch..........................................................
3-10 Windows...............................................................
4. CALIBRATION..........................................................6
5. DIMENSION DIAGRAM............................................. 7
HE ADDRESS OF AFTER SERVICE CENTER...............8
6.
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5
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1. SPECIFICATIONS
Measure
Range 1 :
Range 0 - 2,000 Lux
Range 2:
2,000 - 20,000 Lux
Range 3 :
20,000 - 50,000 Lux
Output 4 - 20 mA
Range 1 :
0 Lux = 4 mA
1,000 Lux = 12 mA
2,000 Lux = 20 mA
Range 2:
0 Lux = 4 mA
2,000 Lux = 5.6 mA
20,000 Lux = 20 mA
Range 3 :
0 Lux = 4 mA
20,000 Lux = 10.4 mA
50,000 Lux = 20 mA
Accuracy ( 5 % rdg + 0.2 % F.S. )
@ rdg = reading value, F.S. = full scale
@ 23 5 蚓
@ Accuracy tested by a standard parallel
light tungsten lamp of 2856 K
temperature.
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Sensor Used the exclusive photo diode & color
Structure correction filter, spectrum designed to meet
C. I. E.
External ZERO VR ( 4 mA adjust VR )
Adjustment SPAN VR ( 20 mA adjust VR )
Max. Output 200 ohms.
Load
Power 90 - 260 ACV
Supply 50 Hz/60 Hz
Power AC 110 V : Approx. 1.3 VA.
Consumption AC 220 V : Approx. 1.6 VA.
Mounting Din rail or wall.
Case ABS plastic
Operation 0 蚓 to 50 蚓 ( 32 蚌 to 122 蚌 )
Temperature
Operation Less than 80 %RH
Humidity
Dimension See page 6.
Accessory Light probe......................... 1 PC
Included Operation Manual................ 1 PC
2
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2. INSTALLATION
1) Connecting the " Power Supply " ( 90 to 260 ACV ) and
the " 4 - 20 mA Output wires " to the " Wires Layout Socket "
( 3-6, Fig. 1 ) as following :
Terminal 5, Terminal 6 :
Power supply ( 90 to 260 ACV, 50/60 Hz )
Terminal 7 ( + output ), Terminal 8 ( - output ) :
4 to 20 mA signal output to the external Indicator,
Controller or Data access system... that can accept 4 to
20 mA signal.
2) Plug in the " Transmitter Output Connector " ( 3-5, Fig. 1 )
to the " Wires Layout Socket " ( 3-6, Fig. 1 ).
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3)Insert the " Probe Plug " ( 3-7, Fig. 1 ) into the " Plug
A
A
A
A
A
A
Input Socket " ( 3-4, Fig. 1 )
4)Switch On the ACV power source, the " Power Indicator "
( 3-3, Fig. 1 ) will light.
5)Select the max. range on the " Range Switch " ( 3-9, Fig. 1 ).
Considerations :
* The range 2 is designed & to measure the light values
2,000 Lux. If the measured light values less than
2000 Lux, it should select the " Range Switch " to the
lower range ( Range 1 ) to get high resolution &
precision.
* The range 3 is designed & to measure the light values
20,000 Lux. If the measured light values less than
20,000 Lux, it should select the " Range Switch " to the
lower range ( Range 2 or Range 1 ) to get high
resolution & precision.
6)Face the " Light Sensor Probe " ( 3-9, Fig. 1 ) the direction
of the measuring light.
7)The transmitter will generate 4 to 20 mA current output
that according the Air velocity value which measuring
from " Sensing Head " ( 3-8, Fig. 1 ).
Note :
Range 1 :
Range 2 :
Range 3 :
0 Lux = 4 mA, 1,000 Lux = 12 m
2,000 Lux = 20 m
0 Lux = 4 mA, 2,000 Lux = 5.6 m
20,000 Lux = 20 m
0 Lux = 4 mA, 20,000 Lux = 10.4 m
50,000 Lux = 20 m
8)The Max. load for the output terminal is 200 ohm.
So the total internal impedance of connecting wire
should less than 200 ohm, other wise the accuracy
will be changed and beyond the specification.
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3. FRONT PANEL DESCRIPTION
R
Fig. 1
3-1 Zero Adjust V
3-2 Span adjust VR 3-7 Probe Plug
3-3 Power Indicator 3-8 Light Sensing Probe
3-4 Probe Input Socket 3-9 Range Switch
3-5 Transmitter Output 3-10 Windows
Connector
3-6 Wires Layout Socket
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4. CALIBRATION
j
l
1)The Light Transmitter already made the precision
calibration when it is produced. We do not strongly
recommend the user to make any calibration again when
you receive the unit.
2)After the Light Transmitter already be used for a long
period ( several years.. ), if intend to make the new
calibration, it should do by the qualify technician people
only, the calibration procedures are following :
a.
Select the " Range Switch " ( 3-9, Fig. 1 ) to Range 1
( 0 - 2,000 Lux ).
b. No light into the " Light Sensing Probe " ( 3-8, Fig. 1 )
just blanking the Light Sensing Probe, tune up " Zero
ust VR ( 4 mA adjust VR ) " ( 3-1, Fig. 1 ) unti
Ad
output terminal generate the 4 mA DC.
c. Face the " Light Sensing Probe " ( 3-8, Fig. 1 ) to the
1,600 Lux standard Light source ( tungsten light source,
2856 K temperature ) tune up " Span Adjust VR ( 20
mA adjust VR ) " ( 3-2, Fig. 1 ) until output terminal
generate the 16.8 mA DC.
d. Repeat the above procedures three times at least.
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5. DIMENSION DIAGRAM
7
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6. THE ADDRESS OF AFTER SERVICE
CENTER
8
0312-TR-LXT1A4-socket
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