SENSIT Technologies Trak-It IIIa GLT User manual

851 Transport Drive • Valparaiso, IN 46383 (USA)
Phone: [phone] • www.gasleaksensors.com
Combustible Gas Indicator (CGI)
INSTRUCTION MANUAL
Trak-It®IIIa GLT
Read and understand
instructions before use.
For use with combustible
gases and optionally
available oxygen and
toxic gases.

⚠ Warning: To prevent the risk of ignition of ammable atmospheres,
batteries must only be changed in an area known to be non-hazardous.
⚠ Warning: To prevent ignition of ammable or combustible
atmospheres, disconnect power before servicing.
Do not mix batteries of different age or type.
CAUTION: Lithium backup cell may explode if mistreated. Do not
recharge, disassemble or dispose of in re.
⚠ 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.
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

iii
WARNING: To reduce the risk of ignition of a ammable
atmosphere, batteries must only be changed in an area known
to be nonammable.
AVERTISSEMENT: Pour réduire le risque d’allumage d’une
atmosphère inammable, des batteries doivent seulement être
changées dans un secteur connu pour être inammables.
Do not mix batteries of different age or type.
Ne mélangez pas les batteries de l’âge ou du type différent.
Not for use in atmospheres of oxygen greater than 21%.
Pas pour l’usage en atmospheres de l’oxygène 21% plus grand
que.
ONLY zero instrument in a gas free environment.
SEULEMENT l’instrument zéro dans un gas libèrent
l’environnenment.

4
CONTENTS
Preparation
For Your Safety .......................................................... ii-iii
Parts and Accessories ...................................................6
General Description ................................................... 7-8
Specications ................................................................9
Product Features ....................................................10-11
Sensor Types and Pumps ...........................................12
Basic Operation
Battery Installation/Replacement .................................13
Operation and Use ................................................ 14-18
Bar Hole Test ......................................................... 19-20
Leak Search Mode (Optional)......................................21
Purge Mode .................................................................22
Calibration Check ........................................................23
User Menu
User Menu Descriptions ........................................ 24-25
Show Time, Set Clock .................................................26
Printing to Optional IR Printer ......................................27
Bump Test ....................................................................28
Cal, O2 Test .................................................................29
Gas Type .....................................................................30

5
CONTENTS
User Menu
Cal Log: Show Log, Print Log ......................................31
Session Log: Show Log, Print Log ..............................32
BH Log, SMART-CAL ..................................................33
Cal Due, Autolog..........................................................34
CF Test: Show Test, Print Test ............................... 35-37
Calibration
Calibration Overview, Denitions .................................38
Calibration Auto Cal .....................................................39
Carbon Monoxide (CO) Calibration .............................40
Hydrogen Sulde (H2S) Calibration ............................41
Hydrogen Cyanide (HCN) Calibration .........................42
Methane LEL Calibration (50% LEL) (2.5% LEL) ........43
Methane Calibration (100%) ........................................44
Propane Calibration (1.1%) or (50% LEL) ...................45
Oxygen Sensor Test ....................................................46
Advanced Settings
Expert Menu Feature Denitions ........................... 47-48
Expert User Chart .................................................. 49-50
LEL Cross-Sensitivity ..................................................51
Warranty .......................................................Back Cover

6
PARTS AND ACCESSORIES
Standard Accessories (Included)
360-00059 Carrying Pouch
883-00044 32” Heavy Duty Fiberglass Probe w/Hose
310-00004 Alkaline “C” Batteries
750-00077 Instruction Manual
360-00043 Shoulder Strap
360-00525 Bluetooth Antenna
Accessories and Replacement Parts
873-00019 Hydrocarbon Filter (1)
873-00013 Mini Hydorcarbon Filter (1)
883-00045 Hot Air Probe Assembly
883-00039 30” Brass Probe
870-00018 Sensor Cap with “O” Rings
883-00038 Conned Space Probe with Tubing
883-00041 32” Fiberglass Probe
883-00047 Purge Probe
874-00001 Leak Survey Drag Tube Assembly
883-00046 Telescopic Survey Probe
360-00301 Filter Inlet
874-00003 Pigtail (use for calibration)
870-00039 IR Link Interface w/ SmartLink Software
914-00000-01 Smart-Cal Automatic Calibration Station
Calibration Kits
Contact us with instrument model number for correct Calibration Kit.

7
GENERAL DESCRIPTION
The TRAK-IT® IIIa GLT is designed to be used in conjunction with
a GLT tablet computer. The paired instrument-tablet system allows
users to be trained in a hazardous gas free environment. The trainer
monitors each instrument with a tablet computer running specialized
software that allows real-time data to be streamed via Bluetooth from
the instrument. The software and instrument supports two modes:
monitoring and training. Monitoring mode only allows one way
communication, from the instrument to the tablet. The trainer sees a
real-time feed of exactly what the instrument is reading and displaying,
including any supplemental information such as menus the user enters
or error messages being displayed. In monitoring mode, the instrument
behaves essentially identical to its standard issue counterpart, meaning
that the sensors will detect live gas. Training mode allows the same real
time display information, but does not allow the sensors to detect live
gas. Instead, the trainer is able to send commands to the instrument for
all basic functions and tests (i.e. gas readings, test modes such as tick
and barhole, condition messages such as ow block and low battery,
and more).
In monitor mode, the TRAK-IT® IIIa GLTis designed to detect
combustible gases, oxygen content and toxic gases when so equipped
with the available sensors. Each model of the TRAK-IT® IIIa GLT
provides specic detection features based on approved sensor options.
Each TRAK-IT® IIIa GLT can be re-congured or upgraded by the
manufacturer for an additional charge should your sensing requirements
change.
The TRAK-IT® IIIa GLT is designed to detect combustible gases in
the LEL range (percent volume optionally). Additionally and optionally
oxygen and two toxic sensors may be added to meet your sensing
requirements. Toxic sensor congurations include carbon monoxide,
hydrogen sulde or hydrogen cyanide.

8
All TRAK-IT® IIIa GLT instruments incorporate a low power catalytic
sensor to measure combustible gases in the LEL (lower explosive limit)
range and a separate advanced thermal conductivity sensor to measure
percent volume (%v/v).
An automatically backlit display shows gas concentrations for all sensors
installed. A LED and audible horn indicate exceeding the present alarm
limits. Sampling is continuous with the use of the internal sample pump.
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
at 10% for LEL only models. When equipped with percent volume (%v)
sensor, the alarm range is 50% (2.5% methane) to 17% volume of
methane. The carbon monoxide (CO) alarm is preset at 35ppm. The
oxygen (O2) alarms are preset at below 19.5% and above 23.5%. The
hydrogen sulde (H2S) alarm is preset at 10ppm. The hydrogen cyanide
(HCN) is preset at 5 ppm.
GENERAL DESCRIPTION

9
SPECIFICATIONS
SENSOR SPECIFICATIONS
TYPE RESOLUTION RANGE ACCURACY
PPM* 1 or 10ppm 0-2,000ppm ±10%
LEL 0.1%** up to 2% 0-100% LEL ±10%
% NAT GAS 0.1% . 5 . 0 - 1 0 0 % G A S ± 5 %
O2 0.1% . 0-25% ±0.2% or 2%***
CO 1ppm 0-2,000ppm ±5ppm or 5%***
H2S 1ppm 0-100ppm ±2ppm or 5%***
HCN 1ppm 0-30ppm ±2ppm or 5%***
*PPM Optional
** % gas only display has 0.01% resolution in LEL range
*** Whichever is greater
PRODUCT SPECIFICATIONS
Size: 6.5” x 4” x 4.25” (167 x 109 x 102mm)
Weight: 2.8 lbs. (1.27Kg)
Operational Temp: -4 to 104° F (-20° to 40° C)
Alarm: >98db @ 30cm
Battery Life: 4 “C” Alkaline: 25 hrs. continuous

10
TRAK-IT® IIIa GLT instruments are constructed of durable stainless
steel to withstand the rigors of eld use.
All TRAK-IT® IIIa GLT instruments require 4 Duracell MN 1400
batteries which provide 25+ hours of continuous use.
Alarms can easily be heard from the sounder located on the front of the
instrument.
SPEAKER
NECK STRAP
OPERATIONAL BUTTONS
BLUETOOTH
ANTENNA
GRAPHIC DISPLAY
IR WINDOW
STATUS / ALARM LEDs
PADDED CARRYING POUCH
PRODUCT FEATURES

11
PRODUCT FEATURES
An infrared communication window is located on the right side to allow
the TRAK-IT® IIIa GLT instruments to download calibration data and
readings the operator has elected to save to the instrument’s on-board
memory.
A graphic display continuously updates the operator of all available gas
concentrations and alarms simultaneously as well as indicates internal
functions such as air ow and battery power. The red LED on the right
side will ash during any alarm condition.
There are 3 operational button pads on the front of the TRAK-IT® IIIa
GLT.
BUTTON (A) POWER/MUTE
Displaying power and mute features.
BUTTON (B) MENU
Accesses user functions such as Bar Hole Test and user selectable
features: calibration viewing data, setting clock, etc.
BUTTON (C) ZERO/SAVE
Activates the save feature and performs a manual zeroing of the
sensors.
Pressing any button will produce a click sound.

12
SENSOR TYPES AND PUMPS
Combustible Gas Sensor
All TRAK-IT® IIIa GLT instruments incorporate a poison resistant
catalytic bead sensor. The function and accuracy of the sensor are
monitored and controlled by specialized circuitry and a microprocessor.
This sensor is capable of measuring concentrations of 50ppm up
to 100%LEL. When so equipped concentrations above 70% LEL
are monitored or measured simultaneously with a state-of -the-art
thermal conductivity sensor (TC). This sensor is capable of measuring
high concentrations of gas quickly and accurately. All readings are
automatically switched between the scales of LEL and % volume.
Electrochemical Sensors (optional)
All TRAK-IT® IIIa GLT instruments when equipped with the following
optional sensors, microprocessor and associated circuitry will measure
oxygen levels from 0-25%; measure carbon monoxide (CO) levels from
0-2000ppm; measure hydrogen sulde (H2S) levels from 0-100ppm;
measure hydrogen cyanide (HCN) levels from 0-30ppm. All gases are
displayed simultaneously on the display.
The Pump
The TRAK-IT® IIIa GLT is equipped with a powerful and efcient
2 speed diaphragm pump. The lter assembly connected to the probe
protects the pump from foreign material. Additional external and internal
lters protect the pump from damaging debris if the primary lter is
missing or damaged. There are audible and visual indicators that will
show a blocked or improperly operating pump.

13
BATTERY INSTALLATION/REPLACEMENT
A battery strength icon is located at the lower right corner of the display
which indicates the approximate battery capacity. Battery replacement
is necessary when the display reads BAT LOW (4.25 Volts), an audible
alarm sounds and the green ready LED ashes. When the instrument
remains in BAT LOW, a count down will appear starting at 300 seconds
(5 minutes) which is the maximum time remaining before shut down.
⚠ WARNING: Always change batteries in a non-hazardous location.
Battery Replacement
To remove the instrument from the pouch, the bluetooth antenna on the
top left side must be removed.
Remove the battery door from the bottom of the housing by loosening
the hold down screw. Remove the cover by pulling the cover away from
the two tabs that secure the opposite side of the door to the instrument.
Place 4 alkaline “C” Duracell MN 1400 batteries into the battery holder.
Observe the polarity markings on the inside of the battery holder.
Replace and secure the battery door by tightening the screw.
After battery replacement, reinstall the bluetooth antenna.

14
OPERATION AND USE
⚠CAUTION: Always start any TRAK-IT® IIIa GLT in a gas free
environment to ensure a proper zero.
NOTE: Instrument must be used in monitoring mode in order to read live gas.
1. Push the POWER/MUTE BUTTON (A) until the instrument beeps and the
display illuminates. Each of the following will be displayed:
a. Sensit Technologies Logo
b. System check that includes:
i. LED check
ii. Backlight check
iii. Memory check
iv. Pump check
v. Battery check
vi. Microprocessor check
vii. Pressure sensor check
viii. Clock check
ix. Auto Log Check (alert at 50 records remaining
before memory is full and overwrites)
x. Bluetooth Check
c. Wait for trainer
d. GLT Mode
e. Display all active sensors
f. Display “TRAK-IT®IIIa GLT, Conguration Number and Software revision”.
g. Date and Time
h. Language (English, Chinese or Turkish)
i. Gas Type (indicating type of calibration gas)
j. Serial Number
k. Cal Due (up coming) or Cal Past Due
l. Sensor Warm Up and Please Wait
m. Autozero (all gases and pressure sensor)
n. Auto Bump Test (optional)
o. Working display showing all gases sensed and battery power remaining

15
OPERATION AND USE
2. If you are not using the instrument along with a GLT tablet, press and
release any button on the “Wait for Trainer” screen to select monitoring
mode and continue the start-up process.
3. If the display fails to illuminate or BAT LOW is shown on the display,
replace the batteries.
4. If any sensor is past the intended calibration cycle, CAL PAST DUE
will appear during the start-up sequence. The instrument will also show
which sensor is due for calibration at that time.
During “Autozero” all sensors will be displayed with the zeroing result
(passed or failed). Pressing and holding any button will freeze the
display screen during warm-up to allow extended viewing.
5. If after the warm-up period, during autozero, if the instrument
determines that a sensor is inoperable, a FAILED message will ash for
that sensor. Then FAIL will show on the display for the corresponding
sensor. If this occurs press and hold the ZERO/SAVE (C) button until
“Autozero” is displayed to attempt to correct the error.
6. The display will indicate the type of gas used for calibration or to
be sensed and the unit of measure (i.e.: LEL, PPM, % VOL) below all
readings.
See Page 46 Expert Feature Chart, for optional congurations for
the combustible gas detection display. If PPM display is selected, the
measurement auto-ranges to LEL at levels above 2000ppm.
When equipped with the optional percent volume sensor, the
measurement auto-ranges at 100% LEL. The display will indicate by
changing the unit of measure below the reading to “%v/v”.

16
OPERATION AND USE
7. Prior to use, test the integrity of the sample system.
Use your nger to block the inlet of the probe assembly for 4-5 seconds.
The display will read FLOW BLOCKED if all seals are intact.During
pump ow block, a beep will occur every 2 seconds until the pump
restarts and adequate ow is present.
8. It may be necessary to manually zero the instrument based on
company practices and environmental conditions. Always zero the
instrument in a clean air environment.
9. When testing areas with elevated temperatures such as appliance
vents or ues, always attach the optional hot air probe to the external
lter. These connections need only be nger tight. Failure to use the
approved probe can result in damage to the instrument and may void
the warranty.
⚠ CAUTION: Do not handle the steel portion of any hot air probe
after use. Burns may occur!
10. When sampling areas the appropriate sensors will cause the display
to update when a gas is encountered. If any alarm condition exists for
any sensor, based on their preset alarm points, the red (alarm) LED will
ash and the audible alarm will sound unless it is muted.
Additionally, the reading for the gas exceeding the alarm set point will
also ash.

17
OPERATION AND USE
The standard factory preset LED indicators and alarm points are:
a. Combustible gas: Methane, audio and visual alarm indicators
from 10% LEL to 100% LEL.
METHANE: 50% LEL Methane to 17% volume* Methane
(LED indicator only above 17% volume Methane)
*When equipped with percent volume sensor.
b. Oxygen - below 19.5% and above 23.5%
c. Carbon Monoxide - 35ppm per utility industry standards
d. Hydrogen Sulde - 10ppm and above per Federal OSHA guidelines
e. Hydrogen Cyanide - 5ppm and above
⚠ Caution: There are gases that can poison or be cross sensitive
to the combustible gas sensor. See LEL Cross-Sensitivity
Calculation Chart
11. To disable the alarm, quickly press the POWER/MUTE BUTTON (A).
To enable the alarm press the same button again.
During an alarm, the gas that has exceeded the preset alarm point
will ash on the display and the ALARM LED will ash indicating a
potentially unsafe condition. If the alarm condition no longer exists, the
alarm sound will automatically deactivate.

18
OPERATION AND USE
12. At any time the operator may save the readings on the display by
pressing the ZERO/SAVE BUTTON (C). This will save all readings for
download at a later time. Log size is factory set to store 6 logs, but
can be increased up to 100 logs. The most recent save is rst during
download. An optional Auto log software of extended memory can store
up to 1,600 records. (Consult factory for details.)
13. Following Federal, State, Municipal and/or Company procedures
move to the areas where gas readings are suspected or must be tested.
Use necessary accessories to draw samples from areas not accessible
with the instrument itself, such as conned spaces or ues. During
sampling, the respective readings may change. Audible and visual
alarms will activate when the preset limits are reached.
14. When equipped with the percent volume sensor, if the instrument
encounters a gas it is not calibrated to, it may read “NSR” or “NSC”
followed by a number. If the instrument is calibrated for natural
gas “NSR” (Non Standard Response) likely indicates a heavy non
combustible gas (e.g.: heavier than air, such as carbon dioxide, etc.).
If the response is “NSC” Non Standard Combustible) the gas is likely a
heavy hydrocarbon, such as gasoline, propane, butane, etc.
15. When being used in dark areas an automatic backlight will illuminate
the display.
16. To turn instrument off, press/hold the POWER/MUTE BUTTON (A)
until the beeping sound stops and POWER OFF appears on the display.
Release the button and a purge time followed by the shut down will
occur.

19
BAR HOLE TEST
For percent volume equipped units
To assist pinpointing the location of underground leaks, the Bar Hole
Test feature may be used. This feature will draw a timed sample (20
seconds) and display sustained and peak readings.
NOTE: Use an approved barhole probe with lter to prevent
damage to the instrument when conducting bar hole surveys.
To Conduct a BAR HOLE Test:
Prior to the test, attach the approved bar hole probe to an operating
instrument. Block the inlets of the probe to test for any air leakage. The
instrument will show FLOW BLOCKED in approximately 10 seconds if
all seals are good. If ow block is not detected, check the integrity of
the “O” ring seals and connections on the probe and instrument. If ow
block can not be achieved, contact the factory for assistance. An air tight
system is crucial for accurate readings.
From the working display, press & release the MENU BUTTON (B).
SELECT TEST will appear on the top line of the display. Press & release
MENU BUTTON (B) to enter the BH menu. Insert the bar hole probe into
the location for the survey. Press and release MENU BUTTON (B) once
more to start the test. A 20 second countdown for the test will begin.
The current percent of gas by volume (no LEL or PPM reads will be
displayed) detected will be displayed as % ON. The peak percent of gas
by volume detected will be displayed as % PK. At the conclusion of the
test, the pump will shut off and any sustained and peak readings will be
shown and recorded.

20
BAR HOLE TEST
If you have another test to take, press & hold the SAVE/ZERO BUTTON
(C). This will restart the pump and clear the last readings. When the
readings have returned to zero, release SAVE/ZERO BUTTON (C). The
countdown timer will restart.
You may encounter NSR or NSC readings during the bar hole test (see
page 12 for denition). A hydrocarbon lter kit is available to help scrub
the sample if contact with heavy hydrocarbons is suspected. Please
consult the factory for details. If you wish to cancel during a test or return
to the working display, press & release the POWER/MUTE BUTTON (A).