Sensit UL913 Manuale utente
Combustible Gas Detector
Warning: To prevent ignition of ammable
or combustible atmospheres, disconnect
power before servicing.
7WA6
Approved UL913, For Class 1,
Division I, Groups C & D
hazardous locations when used
with alkaline batteries.
INSTRUCTION MANUAL
SENSIT®HXG-3
Read and understand
instructions before use.
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⚠NOTICE: LEL sensor should be checked for accuracy after
exposure to any gases containing silicones, high sulfur content, high
concentrations of propane and high concentrations of CO (above
1000ppm) or exhaust gases. Continuously low calibration check results
or uctuation of zero readings may indicate sensor end of life or failure.
Consult Sensit Technologies with any questions.
For best accuracy always zero in clean air environments similar in
temperature and relative humidity to the environment where the
instrument will be used. When continuously exposed to combustible gas
concentrations beyond LEL for longer than 5 minutes always perform a
calibration check prior to the next use.
⚠Warning: To reduce the risk of ignition of a ammable atmosphere,
batteries must only be changed in an area known to be nonammable.
Do not mix batteries of different age or type.
Not for use in atmospheres of oxygen greater than 21%.
ONLY zero instrument in a gas free environment.
⚠Warning: To maintain intrinsic safety, service must be performed
by factory authorized technicians with approved replacement parts only.
FOR YOUR SAFETY
NOTICE: ⚠CAUTION: This safety symbol is used to
indicate a potentially hazardous situation which, if not
avoided, may result in minor or moderate injury.
ii
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CONTENTS
Preparation
For Your Safety .............................................................. ii
Parts and Accessories ...................................................5
General Description .......................................................6
Sensor Specications ....................................................7
Product Specications ...................................................7
Product Features ..................................................... 8-10
Sensor Type ................................................................11
Basic Operation
Battery Installation/Replacement .................................12
Operation and Use ................................................ 13-16
Calibration Check ........................................................17
User Menu and Detailed Operation
User Menu / Function Descriptions .............................18
Printing to Optional IR Printer ......................................19
Calibration, Power Off .................................................20
Set Clock .....................................................................21
Show Calibration Log ..................................................22
Show Session Log .......................................................23
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CONTENTS
Tests and Calibration
Bump Test ....................................................................24
Smart-Cal .............................................................. 25-26
Gas Type .....................................................................27
Calibration Notes, Preparing For Calibration ...............28
Combustible Gas Calibration
(50% LEL Methane or 50% LEL Pentane) ............. 29-30
Factory Adjustble Features ..........................................31
Warranty ....................................................... Back Cover
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PARTS AND ACCESSORIES
Standard Accessories (Included)
872-00001 Hard Carrying Case
360-00040 Wrist Strap
310-00004 3”C” Alkaline Batteries
750-00023 Instruction Manual
Accessories and Replacement Parts
375-2611-01 LEL Sensor
365-00045 Sensor Cap without Filter Disc
870-00012 Extension Adapter
870-00004 IR Printer
870-00039 IR Link Interface w/ SmartLink Software
914-00000-01 Smart-Cal Automatic Calibration Station
Calibration Kits
881-00015 Calibration Kit – Methane
881-00077 Calibration Kit – Pentane
Contact us with instrument model number for correct Calibration Kit.
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GENERAL DESCRIPTION
The SENSIT® HXG-3 is designed to detect combustible gases. All
SENSIT® HXG-3 instruments incorporate an advanced low power
semiconductor sensor to measure combustible gases in LEL (Lower
Explosive Limit) range.
LEL resolution can be factory set between 0.1% and 2%. The ppm display
is simultaneously shown in 1 or 10ppm increments (resolution). If enabled,
the peak reading display takes precedence over the ppm display.
An automatically backlit display shows all gas concentrations being
measured. LEDs located on the front of the instrument indicate preset
visual warnings of increased gas concentration.
Audible and visual alarms warn the operator of hazardous conditions
being sensed. The preset alarms are indicated by a red ashing LED,
display indicator and alarm sound. The combustible gas alarm is preset
from 50% LEL (2.5% methane or 0.75% pentane).
The SENSIT® HXG-3 instrument is approved by Underwriters
Laboratories to UL913, for Class 1, Division 1, Groups C & D hazardous
locations when used with Duracell™ MN1400BK or equivalent alkaline
batteries.
6
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SPECIFICATIONS
SENSOR SPECIFICATIONS
TYPE RESOLUTION RANGE ACCURACY
LEAK 1ppm or 10ppm 0-50,000ppm ±10%
LEL* 0.1% to 2% 0-100% ±10%
*Factory Adjustable
PRODUCT SPECIFICATIONS
Size: 11.5” x 3” x 2.32” (292 x 76 x 59 mm)
Weight: 1.2 lbs. (544 g)
Operational Temp: 0 to 120° F (-17.8 to 48.8° C)
Storage Temp: -20° to 132° F (-28.9 to 55.6° C)
Battery Life: Alkaline: 25 hrs. continuous
The SENSIT® HXG-3 instrument is approved by Underwriters
Laboratories to UL913, for Class I, Division 1, Groups C & D hazardous
locations when used with approved batteries.
APPROVED BATTERIES
Duracell MN 1400BK or equivalent alkalines.
7
7WA6
Approved UL913, For Class 1, Division I, Groups C & D
hazardous locations when used with alkaline batteries.
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SENSOR
BACKLIT LCD DISPLAY
WARNING LEDS
OPERATION BUTTONS
TICK CONTROL
FLEXIBLE GOOSENECK
BATTERY COMPARTMENT
8
PRODUCT FEATURES
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PRODUCT FEATURES
SENSIT® HXG-3 instruments are constructed of durable ABS plastic
to withstand the rigors of eld use.
Incorporated in the hand grip area is the battery compartment. All
SENSIT® HXG-3 instruments require 3 “C” type alkaline batteries.
Duracell MN 1400 batteries provide approximately 25 hours of
continuous use.
A thumbwheel is located on the right side of the instrument to activate
the audible tick sound that helps in locating the source of a gas leak.
This tick is generated by using specialized circuitry in combination with
the LEL sensor located at the end of the gooseneck assembly. The
tick can be easily heard with the speaker located in the back of the
instrument.
The Infrared Communication window is located on the right side to allow
the SENSIT® HXG-3 instrument to
1. Communicate with Smart-Cal Calibration Station.
2. Communicate with IR-Link Computer Interface.
3. Download calibration data
4. Download readings the operator has elected
to save to the instrument’s on-board memory.
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PRODUCT FEATURES
A exible gooseneck is used to assist in locating the source of gas leaks
and remote sampling.
A two line display continuously updates the operator of all available
gas concentrations and alarms simultaneously as well as indicates low
battery power.
Below the display is a series of LEDs that are preset to indicate
combustible gas concentrations. During an alarm condition the red
Hazard 3 LED will ash and an audible warning will sound.
There are 3 operational button pads on the front of all SENSIT® HXG-3
instruments.
BUTTON (A) POWER/MUTE
Operates POWER and MUTE features and exit menu items.
BUTTON (B) MENU
Use to enter, change and select menu items.
BUTTON (C) SAVE/ZERO
Use for save data feature, manually zero sensors, scroll and change
menu items.
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