SENKO RAITEC SI-100D User manual

ⓒ
Copyright SENKO CO., LTD.
. INSTRUCTIONS MANUAL
Fixed Gas Detector
SI-100D

ⓒ
Copyright SENKO CO., LTD.
This manual contains operating instructions for stationary gas monitoring instruments designed for
area air quality and safety applications, and should be STUDIED CAREFULLY by all persons
responsible for the operation and maintenance of the instruments. All SENKO equipment described
herein is designed or manufactured for use only as set forth herein and by the labels affixed, or
other literature accompanying the product.
Where WARNINGS or CAUTIONS are herein set forth, they must be followed. If SENKO equipment is
used in a manner or under conditions not specifically authorized or prescribed by this manual, or by
other materials or written instructions either accompanying the product or authorized by SENKO in
writing, or if it is used or maintained by unqualified or improperly trained personnel, SENKO Co., Ltd.
disclaims all responsibility of every kind for said equipment. While basic connection installation
instructions are included, all equipment must be installed by qualified electricians FOLLOWING ALL
ASPECTS OF THE LOCAL CODE REQUIREMENTS. Also, the instruments must be calibrated and
alarms tested periodically by trained personnel for proper functioning of the instruments.
CAUTION: The overall system, especially where gas monitoring sensors are used, must be
CALIBRATED BY QUALIFIED PERSONNEL. Thereafter, a monthly calibration check is recommended to
assure reliability and accuracy.
Please call the factory if any problems are encountered.
WARRANTY
SENKO sensors and instruments are designed for area air quality and safety applications. SENKO
gas monitoring instruments are provided with a one year warranty. This warranty covers only
defective parts or workmanship in normal use and service. Instruments which fail to function due to
factory defect
within one year of date of shipment are to be returned to SENKO for warranty repair.
SENKO will determine the nature and responsibility for the defect. In all cases the warranty is
limited to the original cost of the equipment. Any misuse of equipment is the customers
responsibility. SENKO will either repair or replace (at SENKO’s option) returned instruments subject
to the warranty, at no charge. No field service is included in this warranty. For field service
requirements please contact SENKO.
This warranty is voided by:
1. Improper application of instrument.
2. Misuse of instrument.
3. Intentional or accidental damaging of instrument.
4. Not returning the sensor to factory for warranty validation.
For any queries regarding warranty repair or replacements, please include the instrument model and
serial number in any transmittals to SENKO. SENKO instruments are supplied with operating and
installation manuals and other literature. These are the only source of specific details regarding
proper operation and maintenance of the equipment. These instructions must be carefully read and
the precautions followed in detail. Instruments must be calibrated and alarms checked periodically
to
assure proper equipment operation. Please refer to the manual for details.
Tel: [phone]
Fax: [phone]
15 Road Oesammiro (485 Oesammi-dong), Osan-si, Gyeonggi-do, 447-230 South Korea
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WARNING
Read this manual carefully before using the instrument. The instrument
will perform as designed only if it is used and maintained in accordance
with the manufacturer's instruction. Otherwise, it could fail to perform as
designed and persons who rely on this instrument for their safety could
sustain serious personal injury or death.

ⓒ Copyright SENKO CO., LTD.
Table of contents
Product introduction ···················································································································································································· 3
1. Description ······························································································································································································4
2. Sensor specification ·········································································································································································· 5
3. Electric wiring ························································································································································································ 5
4. Calibration ································································································································································································ 6
5. Notice for user ······················································································································································································ 7
6. Drawing ······················································································································································································ 8
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Copyright SENKO CO., LTD.
Introduction
∙Simple structure, reasonable price
∙Ease of Installation
∙Long distance communication with 4~20mA analog output
∙can be used with present any indicators and PLC using analog
∙Explosion proof structure (Ex d IIB T4)
모델명 SI-100D
Detecting Method Diffusion Type
Detecting Gas Combustible Gas
Sensor Type Catalytic
Detecting Range 0~100% LEL
Accuracy ±3% / Full Scale
Output signal 4-20mA
Telemetering
line length Analog output MAX. 2,500m
Operating
temp. & Humi. -20°C ~ +60°C, 5~95% RH (Non-condensing)
Power 24V DC (Consumption ≤2.0W, [e-mail])
Dimensions 93(W) X 106(H) X 89(D)mm, Weight:0.6kg
Explosion Proof Ex d ⅡB T4
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Copyright SENKO CO., LTD.
1. Description
Instrument Overview
1. Sensor
2. Bolt of top case
3. Inlet for cable (PF1/2")
4. Part for installation of the detector
5. For grounding
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2
1
3
5
4

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2. Sensor Specification
Sensor Range Span Gas Model Origin
Combustible 0~100%LEL 25%LEL NAP-55A Japan
LPG 0.05~1.8% 0.45%(isobutene) NAP-55A Japan
LNG 0.05~5.0% 1.25%(CH4) NAP-55A Japan
3. Electrical Wiring
2 3 1
PIN Wire Color
1 Power (+), 24V DC Brown
2 Power (-) Blue
3 4~20mA Output Green
4 Connection part for sensor cable White
5 Volume for calibration Blue
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4
5

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Copyright SENKO CO., LTD.
4. Calibration
①Span calibration
You can calibrate the detector through volume part(No. 5)
of pcb board to refer to page 5.
Please set output of the detector as 8mA touching No. 2 and No.3 terminal
with a tester after stabilizing output of sensor for 30 to 60 sec.
after inserting standard gas 25LEL% of Methane to the sensor part of
the detector.
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WARNING
Do not Fresh Air Calibration unless you are certain you are in fresh,
uncontaminated air; otherwise, inaccurate readings can occur which can
falsely indicate that a hazardous atmosphere is safe. If you have any
doubts as to the quality of the surrounding air, do not use the Fresh Air
Calibration feature. The calibration check is required to verify span
accuracy. Failure to follow this warning can result in serious personal
injury or death.
WARNING
If the LOW or HIGH alarm activates, leave the contaminated area
immediately; the ambient gas concentration has reached the preset
LOW or HIGH alarm level.
Failure to follow this warning will cause over-exposure to toxic gases
and persons relying on this product for their safety could sustain serious
personal injury or death.
NOTICE
We recommend calibration once every six months, at least once a year.
Sensor’s output going down as time goes by; measurement error will
increase.
Calibration is crucial for the sensor performance and persons relying on
this product for their safety.

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5. Notice for user
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AFTER DE-ENERGIZING,OPENING
DO NOT OPEN WHEN AN EXP
L
OSIVE ATMOSPHERE MAY BE PRESENT
DO NOT OPEN WHEN ENERGIZED
SEPARATE ONLY IN A NON-HAZARDOUS AREA)

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6. Drawing
1. SI-100D is basically for indoor use. You need to install additionally rain cover
to protect the detector from rain if you want to install the instrument outdoor.
2. Install the detector to the location within 30cm from the bottom
(If heavier gas than air, e.g. LPG)
Install the detector to the location within 30cm from the ceiling
(If lighter gas than air, e.g. LNG)
3. Make sure that you have to use cable glands(explosion proof) or
Sealing fitting (explosion-proof construction for internal pressure) to prevent inflow
of external gases if you want to install the detector in explosion district.
4. SI-100D can be used with present any indicators and PLC using analog output
(4-20mA)
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GAS DETECTOR SI
-
100D