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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 personnel. 
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 
custom

er’

s 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. 
 

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.

 

Summary of Contents for SI-100C

Page 1: ...SENKO CO LTD SI 100C Operating Manual...

Page 2: ...g 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 o...

Page 3: ...3 Copyright SENKO CO LTD Table of contents Warning 2 1 Introduction 4 2 Specification 4 3 Sensor specification 5 4 Electrical wiring 5 5 Calibration 6 6 Notice for user 8 7 Certification 9...

Page 4: ...ng Diffusion Type Measuring Gas Combustible Gas Toxic Gas Oxygen Measuring Method Catalytic IR Electrochemical cell Galvanic Accuracy 3 Full Scale Alarm 1st alarm 2nd alarm Output Signal Analog Output...

Page 5: ...20PPM 2PPM 5PPM H2 0 1000PPM 100PPM 500PPM H2S 0 200PPM 10PPM 15PPM NH3 0 100PPM 25PPM 35PPM LEL CH4 0 100 LEL 20 LEL 40 LEL Electrical Wiring PIN 3 Wire Color 1 Power 24V DC RED 2 4 20mA Signal Outpu...

Page 6: ...n it finished S Span Calibration Entry to Span Calibration It shows RED light on the LED marked Z when you supplied power to the instrument At this time press button once to move to Span Calibration m...

Page 7: ...ensor 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 WARNING Do not Fresh Ai...

Page 8: ...should be performed at the same or similar environment as that of the instrument use temperature pressure and humidity If temperature changes sharply during use of the instrument for instance using t...

Page 9: ...9 Copyright SENKO CO LTD Certification...

Page 10: ...10 Copyright SENKO CO LTD...

Page 11: ...11 Copyright SENKO CO LTD...

Page 12: ...12 Copyright SENKO CO LTD...

Page 13: ...13 Copyright SENKO CO LTD...

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