JETEC KGD-SI100 Fixed Gas Detector Instruction Manual

: June 4, 2024
: JETEC

JETEC KGD-SI100 Fixed Gas Detector

MODEL: KGD- SI100
(Fixed Gas Detector)

Introduction

Specification

✓ Various sensors can be applied
✓ Easy operation with a magnetic bar
✓ Large digital LCD embedding white backlight
✓ Explosion-proof & Water/Dust-proof structure
✓ Automatic calibration function
✓ Long-distance transmission by 4-20mA output

Sensor List

Gas	Sensor	Range	A1	A2	Resolution
Oxygen	O2	Electrochemical	0~30%Vol	19.0%vol	23.0%vol

0.1%vol

Carbon Monoxide

| CO| Electrochemical| 0~500ppm| 30ppm| 60ppm| 1ppm
Sulfur Dioxide| SO2| Electrochemical| 0~20ppm| 2ppm| 5ppm|

0.1ppm

Hydrogen

| H2| Catalytic| 0~100%LEL| 15%LEL| 50%LEL| 1%LEL
Hydrogen| H2| Electrochemical| 0~1000ppm| 100ppm| 500ppm|

within 5ppm

Hydrogen Sulfide

| H2S| Electrochemical| 0~500ppm| 10ppm| 15ppm| 1ppm
Combustible| –| Catalytic| 0~100%LEL| 15%LEL| 50%LEL|

1%LEL

Combustible

| –| IR| 0~100%LEL| 15%LEL| 50%LEL| 1%LEL
Ammonia| NH3| Electrochemical| 0~100ppm| 25ppm| 35ppm|

1ppm

Acetylene

| C2H2| Catalytic| 0~100%LEL| 15%LEL| 50%LEL| 1%LEL
Ethanol| C2H6O| Catalytic| 0~100%LEL| 15%LEL| 50%LEL|

1%LEL

Toluene

| C7H8| IR| 0~100%LEL| 15%LEL| 50%LEL| 1%LEL
Toluene| C7H8| Catalytic| 0~100%LEL| 15%LEL| 50%LEL|

1%LEL

Methane

| CH4| IR| 0~100%LEL| 15%LEL| 50%LEL| 1%LEL
Methane| CH4| Catalytic| 0~100%LEL| 15%LEL| 50%LEL|

1%LEL

Chlorine

| Cl2| Electrochemical| 0~5ppm| 0.5ppm| 1.0ppm| 0.1ppm
Chlorine| Cl2| Electrochemical| 0~20ppm| 0.5ppm| 1.0ppm|

0.1ppm

Carbon Dioxide

| CO2| IR| 0~2000ppm| 1000ppm| 1500ppm| 3ppm
Carbon Dioxide| CO2| IR| 0~5000ppm| 3000ppm| 5000ppm|

8ppm

Carbon Dioxide

| CO2| IR| 0~5%Vol| 0.5%vol| 3%vol| 0.1%vol
Hydrogen Chloride| HCl| Electrochemical| 0~10ppm| 1ppm| 2ppm|

0.1ppm

VOC

| VOC| PID| 0~1000ppm| 50ppm| 100ppm| within 3ppm
Xylene| C8H10| IR| 0~100%LEL| 15%LEL| 50%LEL|

1%LEL

Hydrogen peroxide

| H2O2| Electrochemical| 0~10ppm| 1ppm| 2ppm| 0.1ppm
Nitrogen Dioxide| NO2| Electrochemical| 0~20ppm| 3ppm| 5ppm|

0.1ppm

Ethylene oxide

| C2H4O| Electrochemical| 0~30ppm| 1ppm| 2ppm| 0.1ppm
Ethylene| C2H4| Catalytic| 0~100%LEL| 15%LEL| 50%LEL|

1%LEL

Nitrogen Monoxide

| NO| Electrochemical| 0~100ppm| 25ppm| 50ppm| 1ppm
Hydrogen fluoride| HF| Electrochemical| 0~5ppm| 0.5ppm| 1ppm|

0.1ppm

Instrument Overview

OK/ERR LED (Power & Operation)
LOW Alarm (1st alarm)
HIGH Alarm (2nd alarm)
Sensor Housing and Sensor Part
Buttons (Use a Magnetic bar)

How to install

Installing a detector at a site, opening the cover of a detector, or operating it may cause fire or explosion depending on the environment. Therefore, you should proceed with your work after turning off the power and examining whether explosive residual gas is around you or not.

How to fix

You can easily install a detector on a wall or ceiling like the above drawing by using M8 Bolts or other bolts.

How to open and wire

Separating Cover from Gas Detector Body

➢ Use a screwdriver to fasten the bolt (for preventing separating of the Cover from thebody) of the enlarged picture on the side and turn it counterclockwise by two or three turns.
Then hold the cover of the gas monitor and turn it counterclockwise to remove the Cover.

L	Contact output in LOW alarm (DRY or DC 24V)
H	Contact output in HIGH alarm (DRY or DC 24V)
485	RS 485+ Telecommunication output

Measuring Mod

Gas Detector Initial Operation

When this gas detector repeatedly fails to initiate measuring mode, first you should check the conditions of the connection between gas sensors and the detector. When it is impossible for the detector to initiate measuring mode even when the connection to the sensors is proper, the gas detector should require checks and repairs. Therefore, please contact us or your supplier.

Initial Screen Explanation

Set Display

The displays are sequentially shown whenever you press each mode key ( ) by using a magnetic bar.

Description of Set Display

|

GAS TYPE: measuring gas, automatic changes of related information (Range, Low&High Alarm, Span, Unit and point, etc.)
RANGE: maximum measurable range
LOW AL: LOW (1st) alarm setting values
HIGH AL: HIGH (2nd) alarm setting values
SPAN: calibration gas concentration
CAL TIME: required calibration time
GAS UNIT: unit of measuring gas (%VOL, PPM or %LEL)

---|---
|

DEC POINT: decimal point for measuring gas concentration
CAL COUNT: No. of Span calibration (0-100), not able to change
PWR DELAY: initial delay time settings in power supply
AL DELAY: delay time settings for alarm occurrence
INHIBIT: settings for holding alarm and current output

|

COM: communication method (RS485 or HART or NONE)
BAUD: communication speed (baud rate) settings (9600, 19200, 38400)
ID : ID settings (0~254)

Advanced setting

Press MODE key ( ) for 2 seconds by using the magnetic bar in Set Display to enter Advanced setting.
Press MODE key ( ) by using the magnetic bar in Advanced setting screen, in order to go to another menu.
Press DOWN key ( ) by using the magnetic bar to go back to the main menu (SET 1, 2 or 3).
Without magnetic operation for 60 seconds, the display returns to the main menu (SET 1, 2 or 3).

How to modify the settings [Flow chart]

Press MODE key ( ) for 2 seconds by using the magnetic bar in Set Display, in order to enter Advanced setting.
When you press UP key ( ) by using the magnetic bar in Advanced setting display, setting values flicker, which means they can be changed.
Press UP key ( ) when setting values flicker, in order to change the values.
Press MODE key ( ) for 2 seconds to save the changes of setting values. These changes are saved with the indication, “SAVED”.
✓ When GAS TYPE is changed, related settings (GAS UNIT, RANGE, ALAMR, etc.) are changed as well.
In order to operate properly, sensor replacement for the gas type and calibration is required.
✓ When you press DOWN key ( ) in each mode, the mode goes back to its previous step.

Zero calibration & Span calibration

**⚠ WARNING**

Do not conduct Zero Calibration unless you are sure you are in fresh, uncontaminated air. Otherwise, inaccurate reading can occur, then show that a hazardous atmosphere is safe. If you have any doubts as to the quality of the surrounding air, Calibration with N2 gas should be done. Failure to follow this warning can result in serious personal injury or death.

How to connect Calibration cap

Correctly attach the calibration cap to the sensor part of the gas detector (SI-100) as the picture above (using flow meter, etc., flow rate: about 300 SCCM) and inject the calibration gas.

Calibration Mode Explanation

In Calibration mode, the ADC values of ZERO and SPAN are displayed. When you conduct ZERO/SPAN Calibration, Cal. Count starts counting. In the meantime, ADC Value (Present) is displayed on the above part and ADC Value (Before Cal.) on the below part.

How to enter Calibration Mode

Press MODE key ( ) 4 times by using the magnetic bar in Measuring mode, in order to enterCalibration mode.
Press MODE key ( ) for 2 seconds by using the magnetic bar in Calibration mode, in order toenter ZERO calibration when “ZERO” flickers. Then, press MODE key ( ) for 2 seconds once again to initiate ZERO calibration.
When ZERO calibration is completed, the display automatically shifts to SPAN calibration. The process is same as ZERO calibration.
✓ If ZERO calibration ADC value (EX: 12667) goes beyond the SPAN calibration ADC value (EX: 14928),you may suspect failure of calibration or malfunction of the gas sensor. In this case, you should carry out recalibration or receive formal A/S to take appropriate measures for the case.

TEL:+886-4-23729418 (40349) | Email:sales@jetec.com.tw | Web: www.jetec.com.tw