Imperial LD910 User manual

Combustible Gas Leak Detector
Detects all Hydrocarbon and
other Combustible Gases
WARRANTY
The LD910 Combustible Gas Leak Detector is warranted to be free of
defects in materials and workmanship for a period of two years from the
date of purchase. This warranty applies to all repairable instruments that
have not been tampered with or damaged through improper use including
unauthorized opening of the unit. Tools should be returned to the buyer’s
place of purchase.
SERVICE/TECHNICAL QUESTIONS
CALL TOLL FREE: 888.467.8665
30333 Emerald Valley Pkwy. • Glenwillow, Ohio 44139 • 888.467.8665
REPLACEMENT PARTS
Item Part Number
Combustible Sensor S77700
Sensor Cover S77701
Leak Test Vial S77702
Carrying Case S77703
LD910
User Manual
www.imperial-tools.com
[email protected]
MSHA Approved
Intrinsic Safety
Made in U.S.A.
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INTRODUCTION
The LD910 features a long life heated sensor technology that is designed to
detect all combustible gases including Methane, Propane, Butane, Acetylene,
Alcohol, and Gasoline.
Our unique digital leak size indicator takes the guesswork out of whether to repair
a small leak. The digital display is independent from the audio alarm and sensitivity
level, allowing the precise pinpointing of the leak source.
The LD910 does not require rechargeable batteries.
FEATURES
• Unique numeric leak size indicator
• Long life, stable sensor
• Methane sensitivity <5 ppm
• Automatic calibration and reset to ambient
• Low battery indicator
• 3 adjustable sensitivity levels
• Audio mute function
• Uses 4 AA alkaline batteries
• Intrinsically Safe Certied
• Comfortable Sanoprene grip
• CE Certied
• 2-year warranty includes sensor
• Made in USA
OPERATING INSTRUCTIONS
1.TURN ON: Press the ON/OFF button once to turn on and again to turn off.
2.WARM UP: The detector automatically starts heating the sensor. During the
heating cycle, the digital leak size indicator will ash 0 and the detector will sound
a slow “beep”. Warm up time is usually less than 20 seconds.
3.READY: The detector is ready to begin searching for leaks when the ashing
0 stops and the green sensitivity LED turns on. The audio “beep” increases in
frequency and probe LED begins to blink steadily.
Digital Leak Size Indicator
Low Battery Indicator
Sensitivity Level Indicators
Audio Mute & Sensitivity Level Selectors
Power On/Off
LD910 CONTROL PANEL
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LEAK SIZE INDICATOR
The digital leak size indicator remains off normally but once a leak is detected,
a number from 1-9 will be displayed for all combustible gases regardless of the
sensitivity setting.
The number will continue to increase or decrease depending on the amount of
combustible gas sensed. The maximum value will be displayed once the leak
source has been located.
LOW BATTERY INDICATOR
Replace the 4 AA Alkaline batteries when the red LED on the control panel is lit.
Follow battery installation instructions under Maintenance section.
AUDIO MUTE FUNCTION
To silence or mute the audio beep and alarm signal, press the MUTE button.
To restore the audio sound, press the MUTE button again. (Note: a few seconds
is required to restore sound if the mute button is pressed in rapid succession.)
ADJUSTING SENSITIVITY LEVELS
The Leak Detector will default to the NORM sensitivity level automatically once the
unit comes out of the warm up cycle and the green LED will turn on.
To change sensitivity levels, press the SENS once for HI sensitivity (red LED will
turn on) and again for LO sensitivity (yellow LED will turn on).
LEAK TEST VIAL
The leak detector comes with a Leak Test Vial that allows the user to make sure
the detector is performing properly. To test:
1.Remove the colored label dot in the center of the screw cap to expose the
vent hole in the top of the screw cap. (see g. below).
2.Turn on the leak detector and allow the instrument to complete the warm
up cycle.
3. Place the sensor close to the small hole in the top of the Leak Test Vial.
The beep rate should increase and the Digital Leak Size Indicator should display a
number from 3-6 indicating that the sensor and the electronics are working properly.
NOTE: Replace the Test Vial back in the nylon bag when not in use to extend the
shelf life. Replace Test Vial when the green color is less than ¼ full or at the time of
the expiration date.
Remove label dot over
vent hole before testing
Vial cap with vent hole
Expiration date on label
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BATTERY MAINTENANCE
Install Batteries: Remove screw located at rear end of unit and pull down
hinged battery door to open as shown. Always insert all four batteries into the
battery compartment in the same direction. Note: polarity mark on the inside of the
battery door for proper battery orientation.
PRODUCT SPECIFICATIONS
Model # LD910
Name Leak Detector, Combustible Gas
Sensitivity <5 ppm Methane
Sensor Life > 300 hours
Response Time Instantaneous
Power Supply 4 AA Alkaline batteries
Battery Life 20 hours continuous
Warm up time < 10 seconds
Probe length 17 inches (43.8cm)
Numerical Display 7 segment digital display (1 to 9)
Weight, lbs. 1.5 lbs. (0.68kg)
Warranty 2 years (includes sensor)
PARTIAL LIST OF DETECTABLE GASES
• Methane • Propane
• Ethane • Butane
• Hydrogen • Ethylene
• Ethanol • Iso-butane
• NOL • Gasoline
• Acetylene • Methyl Ether
• Ammonia • H. Sulde
• Industrial Solvents • Benzene
• Alcohols • Acetone
• Toluene • Xylene
SENSOR MAINTENANCE
Replace Sensor: Remove sensor by unscrewing sensor cover. Install the new
sensor by aligning the notch in sensor socket with the raised tab on socket holder
(see gure below).
Note: Do not force sensor into socket. Misalignment can damage the sensor pins.
Polarity mark
6 7
Unscrew cover to
replace sensor
Pull straight on (do not twist)
to install sensor
4 pin sensor
Alignment key
Sensor socket tab
Flex probe
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