OPERATING INSTRUCTIONS FOR
Model 2240
Handheld Hydrogen Leak
Detector
P/N M2240
2/29/08
DANGER
Toxic and explosive gases may be present in this monitoring system.
Personal protective equipment may be required when servicing this instrument.
Hazardous voltages exist on certain components internally when the battery
charger is connected. Do not recharge battery in a hazardous environment.
Only authorized personnel should conduct maintenance and/or servicing.
Before conducting any maintenance or servicing, consult with authorized
supervisor/manager.
Teledyne Analytical Instruments
Model 2240
Copyright © 2007 Teledyne Analytical Instruments
All Rights Reserved. No part of this manual may be reproduced, transmitted, transcribed,
stored in a retrieval system, or translated into any other language or computer language in
whole or in part, in any form or by any means, whether it be electronic, mechanical,
magnetic, optical, manual, or otherwise, without the prior written consent of Teledyne
Analytical Instruments, 16830 Chestnut Street, City of Industry, CA 91749-1580.
Warranty
This equipment is sold subject to the mutual agreement that it is warranted by us free from
defects of material and of construction, and that our liability shall be limited to replacing or
repairing at our factory (without charge, except for transportation), or at customer plant at
our option, any material or construction in which defects become apparent within one year
from the date of shipment, except in cases where quotations or acknowledgements provide
for a shorter period. Components manufactured by others bear the warranty of their
manufacturer. This warranty does not cover defects caused by wear, accident, misuse,
neglect or repairs other than those performed by Teledyne or an authorized service center.
We assume no liability for direct or indirect damages of any kind and the purchaser by the
acceptance of the equipment will assume all liability for any damage which may result from
its use or misuse.
We reserve the right to employ any suitable material in the manufacture of our apparatus,
and to make any alterations in the dimensions, shape or weight of any parts, in so far as
such alterations do not adversely affect our warranty.
Important Notice
This instrument provides measurement readings to its user, and serves as a tool by which
valuable data can be gathered. The information provided by the instrument may assist the user
in eliminating potential hazards caused by his process; however, it is essential that all
personnel involved in the use of the instrument or its interface, with the process being
measured, be properly trained in the process itself, as well as all instrumentation related to it.
The safety of personnel is ultimately the responsibility of those who control process
conditions. While this instrument may be able to provide early warning of imminent
danger, it has no control over process conditions, and it can be misused. In particular, any
alarm or control systems installed must be tested and understood, both as to how they
operate and as to how they can be defeated. Any safeguards required such as locks, labels,
or redundancy, must be provided by the user or specifically requested of Teledyne at the
time the order is placed.
Therefore, the purchaser must be aware of the hazardous process conditions. The purchaser
is responsible for the training of personnel, for providing hazard warning methods and
instrumentation per the appropriate standards, and for ensuring that hazard warning devices
and instrumentation are maintained and operated properly.
Teledyne Analytical Instruments, the manufacturer of this instrument, cannot accept
responsibility for conditions beyond its knowledge and control. No statement expressed or
implied by this document or any information disseminated by the manufacturer or its
agents, is to be construed as a warranty of adequate safety control under the user’s process
conditions.
Teledyne Analytical Instruments ii
Handheld Hydrogen Leak Detector
Specific Model Information
This instrument is specifically designed to measure hydrogen in air.
Using this instrument to analyze any other gas mixture may result in
serious error. Consult the factory for additional information for gas
analysis not specified at the time of purchase.
Instrument Serial Number: _______________________
Instrument Range: _______________
Calibrated for: _______________
Background Gas: _______________
Zero Gas: _______________
Span Gas: _______________
Teledyne Analytical Instruments iii
Model 2240
Safety Messages
Your safety and the safety of others is very important. We have
provided many important safety messages in this manual. Please read
these messages carefully.
A safety message alerts you to potential hazards that could hurt you
or others. Each safety message is associated with a safety alert symbol.
These symbols are found in the manual and inside the instrument. The
definition of these symbols is described below:
GENERAL WARNING/CAUTION: Refer to the instructions
for details on the specific danger. These cautions warn of
specific procedures which if not followed could cause bodily
Injury and/or damage the instrument.
CAUTION: HOT SURFACE WARNING: This warning is
specific to heated components within the instrument. Failure
to heed the warning could result in serious burns to skin and
underlying tissue.
WARNING: ELECTRICAL SHOCK HAZARD: Dangerous
voltages appear within this instrument. This warning is
specific to an electrical hazard existing at or nearby the
component or procedure under discussion. Failure to heed this
warning could result in injury and/or death from
electrocution.
Technician Symbol: All operations marked with this symbol
are to be performed by qualified maintenance personnel only.
No
Symbol
CAUTION: THE ANALYZER SHOULD ONLY BE USED FOR THE
NOTE: Additional information and comments regarding a
specific component or procedure are highlighted in the form
of a note.
PURPOSE AND IN THE MANNER DESCRIBED IN
THIS MANUAL.
Teledyne Analytical Instruments iv
Handheld Hydrogen Leak Detector
IF YOU USE THE ANALYZER IN A MANNER OTHER
THAN THAT FOR WHICH IT WAS INTENDED,
UNPREDICTABLE BEHAVIOR COULD RESULT
POSSIBLY ACCOMPANIED WITH HAZARDOUS
CONSEQUENCES.
This manual provides information designed to guide you through
the installation, calibration operation and maintenance of your new
analyzer. Please read this manual and keep it available.
Occasionally, some instruments are customized for a particular
application or features and/or options added per customer requests.
Please check the front of this manual for any additional information in
the form of an Addendum which discusses specific information,
procedures, cautions and warnings that may be peculiar to your
instrument.
Manuals do get lost. Additional manuals can be obtained from
Teledyne at the address given in the Appendix. Some of our manuals are
available in electronic form via the internet. Please visit our website at:
www.teledyne-ai.com.
Teledyne Analytical Instruments v
Model 2240
Table of Contents
List of Figures ............................................................................viii
List of Tables................................................................................ix
Introduction................................................................................... 1
1.1 Overview 1
1.2 Typical Applications 1
1.3 Features 2
1.4 Operator Interface 2
Startup and Operation ..................................................................5
2.1 Unpacking the Instrument 5
2.2 Setup 6
2.3 Startup 6
2.4 Shutdown 7
2.5 Battery Level 7
2.6 Normal Operation 7
2.6.1 Hydrogen Concentration—LCD Display 8
2.6.2 Hydrogen Concentration—Probe Tip 8
2.7 Keypad 10
2.8 Controller LCD Error Status 10
2.9 Reset Operation 11
2.10 Zero Operation 11
2.11 Configuration Menu 11
2.12 Information Display 13
2.13 Reset Sensor 14
2.14 Zero Sensor 14
2.15 Field Calibrate 14
Field Verification and Calibration..............................................15
Teledyne Analytical Instruments vi
Handheld Hydrogen Leak Detector
3.1 Gases 15
3.2 Gas Connection 15
3.3 Numerical Changes 15
3.4 Verify Sensor 15
3.5 Calibrate Sensor 19
3.6 Clear Field Calibration 22
Hydrogen Sensing Considerations............................................23
Maintenance.................................................................................25
5.1 Routine Maintenance 25
5.2 Battery Charging 25
5.3 Cleaning 26
5.4 Troubleshooting 26
Appendix......................................................................................27
A.1 Specifications 27
A-2 Recommended Spare Parts 28
Index.............................................................................................29
Teledyne Analytical Instruments vii
Model 2240
List of Figures
Figure 1-1: User Interface ............................................................... 3
Figure 2-1: Analyzer Components................................................... 5
Figure 2-2: Startup LED .................................................................. 6
Figure 2-3: Unit Ready LED ............................................................ 7
Figure 2-4: Lower Line LED Bar Graph........................................... 8
Figure 2-5: Hydrogen Concentration Indication at the Probe Tip .... 9
Figure 2-6: Peak Hydrogen Detected LED.................................... 10
Figure 2-7: Configuration Menu Navigation................................... 13
Figure A-1: Dimensions................................................................. 28
Teledyne Analytical Instruments viii
Handheld Hydrogen Leak Detector
List of Tables
Table 2-1: Navigation Button Functions ........................................ 12
Table 3-1: Verify Calibration Procedure ....................................... 16
Table 3-2: Field Calibrate Procedure............................................. 19
Table 3-3: Clear Function Procedure ............................................22
Table 5-1 Troubleshooting............................................................. 26
Teledyne Analytical Instruments ix
Model 2240
DANGER
COMBUSTIBLE GAS USAGE
The Model 2240 instrument is CE approved. This rating
applies only to the equipment specified and installed in
accordance with the information contained within this
manual. It is the customer's responsibility to ensure safety
especially when combustible gases are being analyzed since
the potential of gas leaks always exist.
The customer should ensure that the principles of operating
of this equipment is well understood by the user and that the
instrument as well as any approved support equipment is
properly installed. Misuse of this product in any manner,
tampering with its components, or unauthorized substitution
of any component may adversely affect the certification and
the safety of this instrument.
WARNING
Since the use of this instrument is beyond the control of
Teledyne, no responsibility by Teledyne, its affiliates, and
agents for damage or injury from misuse or neglect of this
equipment is implied or assumed.
Teledyne Analytical Instruments x
Handheld Hydrogen Leak Detector Introduction
Introduction
1.1 Overview
The Model 2240 Hydrogen Analyzer is a handheld portable leak
detector for sensing hydrogen gas in air. It employs two sensing
elements on the same semiconductor die and can detect hydrogen leaks
as low as 15 parts per million (ppm). It will not saturate or be destroyed
when detecting hydrogen concentration up to 100%. It is battery
powered and will operate for over 10 hours on a single charge. The
included battery charger will recharge the internal lithium-ion battery in
4 hours.
As the operator moves a hydrogen probe over the area of interest, it
senses the presence of hydrogen. Indicators in the probe tip alert the user
to the presence of hydrogen and the concentration is displayed on the
control unit display. The probe attaches to the controller with an
extendable coiled cord that allows up to 47 inches of reach from the
Controller. The thin probe and flexible cable allow sensing in areas
inaccessible to most other tools.
1.2 Typical Applications
The Model 2240 analyzer is a versatile, lightweight instrument that
can be brought to a process area for analysis. Typical applications for
the analyzer include:
• Leak checking process lines for H
• Analyzing the concentration of H
• H
• Specific gas mixer and process control applications
• Semiconductor manufacturing
• Hydrogen process control
safety monitoring
2
in air
2
in an air stream
2
• Quality assurance
Teledyne Analytical Instruments 1
Introduction Model 2240
1.3 Features
The Model 2240 Hydrogen Analyzer is sophisticated yet simple to
use. The following features are standard features for this instrument:
• High-impact plastic enclosure, dust-tight and protected against
water spray from any direction.
• CE approved
• Large LCD alphanumeric display plus graphic bar graph
indication.
• Long-lifetime Wide Range Sensor®
• Lithium-ion battery supplies power for over 10 hours without
recharging
• Tri-color LED low battery indicator
• AC battery charger
• Sensor wand with coiled wire connection to controller.
• Additional LED indicators in probe for quick visual
determination of hydrogen presence.
• Large front panel keypad interface for convenient operation
1.4 Operator Interface
The user interface is simple and easy to use. Figure 1-1 shows the
Model 2240 with probe and coil attached.
The interface consists of:
• LCD Display
• OFF/ON button
• Battery status indicator
• Navigation buttons
• ENTER button
Teledyne Analytical Instruments 2
Handheld Hydrogen Leak Detector Introduction
Figure 1-1: User Interface
Teledyne Analytical Instruments 3
Introduction Model 2240
Teledyne Analytical Instruments 4
Handheld Hydrogen Leak Detector Startup and Operation
St artup and Operation
2.1 Unpacking the Instrument
The Model 2240 is shipped with all the materials you need to install
and prepare the system for operation. Carefully unpack the instrument
and inspect it for damage. Immediately report any damage to the
shipping agent. Figure 2-1 shows the items that are included in the
package.
Figure 2-1: Analyzer Components
Teledyne Analytical Instruments 5
Startup and Operation Model 2240
2.2 Setup
Insert the probe cable into the probe and the other end into the
Controller. The cable has distinct connections that will only mate in the
proper manner.
2.3 Startup
Power-up the Model 2240 by pressing and holding the ON/OFF
button until the Controller LCD display indicates an operational
message.
Note: Only power-up the instrument in a hydrogen-free
environment.
After power is on the instrument automatically enters an
Initialization mode that lasts approximately ten minutes. During this
time the LCD displays a countdown to completion and the lighted
indicator closest to the Probe Tip is orange (See Figure 2-2) until the
following operations complete:
• Heat the Wide Range Sensor® to operating temperature.
• Perform system self-test.
• Zero the sensor reading.
Figure 2-2: Startup LED
Upon successful completion the instrument automatically switches
to Normal operation and the Probe tip LED turns green. If an error is
detected the instrument will display an Error Status (see Section 2.8).
Teledyne Analytical Instruments 6
Handheld Hydrogen Leak Detector Startup and Operation
Figure 2-3: Unit Ready LED
2.4 Shutdown
To power-down the unit press and hold the ON/OFF button for
approximately 2 seconds until the Controller LCD display turns off.
2.5 Battery Level
After powering up the BATTERY LED indicates the current
battery level: (times may vary as battery ages)
• GREEN – more than one hour of operation remaining
• ORANGE – approximately 15 to 60 minutes of operation
remaining
• RED – less than approximately 15 minutes of operation
remaining
2.6 Normal Operation
During Normal Operation the instrument is detecting and reporting
hydrogen concentration near the Probe Tip Sensor. Hydrogen readings
are displayed on the Controller LCD as well as on the Probe Tip LED
bar graph array. Note that due to the extreme sensitivity of the sensor, it
may take more than one minute to return to a near zero (less than
Teledyne Analytical Instruments 7
Startup and Operation Model 2240
0.001%) reading after exposure to hydrogen. If the instrument doesn’t
return to an indication of less than 0.001% after 5 minutes in a
hydrogen-free environment then invoke the Reset operation (See Section
2.9).
2.6.1 Hydrogen Concentration—LCD Display
The upper line of the Controller LCD indicates a numerical value
or range for the percent hydrogen concentration or peak hydrogen value.
The lower line is used to display the hydrogen meter, a logarithmic bar
graph ranging from 0.001% (10 ppm) to 100% hydrogen by volume. An
open box on the bar indicates the last peak value obtained and filled
boxes indicate current value. Figure 2-4 shows how to interpret the
hydrogen meter:
Figure 2-4: Lower Line LED Bar Graph
2.6.2 Hydrogen Concentration—Probe Tip
The Probe Tip LED Indicator can be used to show an increase or
decrease in hydrogen concentration.
Leak detection is accomplished by watching the Probe Tip LED
and moving the sensor around a potential hydrogen leak. During the leak
check:
1. The Probe Tip LED turns red and remains red when the most
recent peak hydrogen concentration is being detected.
2. The increase in hydrogen concentration will also be indicated
by the increasing number of yellow LEDs powering on in the
LED bar graph array.
3. When the Probe Tip LED turns orange, this indicates that there
is still hydrogen present, but the hydrogen concentration is
Teledyne Analytical Instruments 8
Handheld Hydrogen Leak Detector Startup and Operation
decreasing and the sensor has moved away from the hydrogen
leak.
4. Moving the sensor back towards the potential location of the
hydrogen leak will cause the Probe Tip LED to turn red.
5. Continue moving the sensor into the area that causes the Probe
Tip LED to turn red until the source of the hydrogen leak is
located.
The color of the Probe Tip LED indicates:
GREEN: Unit ready, hydrogen concentration is less than
0.001% (10ppm)
ORANGE: System startup or hydrogen detected (0.001 to 100%)
RED: New peak hydrogen concentration detected
The number of yellow LEDs powered on in the Probe LED bar
graph indicates hydrogen concentration as shown in Figure 2-5.
Figure 2-5: Hydrogen Concentration Indication at the Probe Tip
Figure 2-6 shows the Probe Tip indicating a peak hydrogen
concentration detected greater than 10%. The Prob Tip LEDs will be red
and four yellow bar graph LEDs will illuminate.
Teledyne Analytical Instruments 9
Startup and Operation Model 2240
Figure 2-6: Peak Hydrogen Detected LED
2.7 Keypad
The keypad is used to alter the display or initiate special functions
as follows:
• Pressing ▲ (up arrow button) will display the peak hydrogen
reading.
• Pressing ▼ (down arrow button) will display the current
percent hydrogen concentration.
• Pressing ► (right arrow button) will clear the peak hydrogen
value.
• Pressing and holding ◄ (left arrow button) will invoke the
Zero Operation (see Section 2.10).
• Pressing and holding ◄►(left and right arrow buttons
simultaneously) will invoke the Reset operation (see Section
2.9).
• Pressing and holding the ENTER button will invoke the
Configuration Menu (see Section 2.11).
2.8 Controller LCD Error Status
The following Error Messages can appear on the display:
Teledyne Analytical Instruments 10
Handheld Hydrogen Leak Detector Startup and Operation
Sensor Error – Unit has detected a failure to communicate with
the Probe.
broken – Unit has detected a unit internal failure
See Section 5.4 for troubleshooting
2.9 Reset Operation
The Reset Operation is used to speed recovery from hydrogen
exposure. This operation can be invoked from the keypad during Normal
Operation by Pressing and holding ◄► (left and right arrow buttons
simultaneously) or from the Configuration Menu (see Section 2.11).
Once invoked the user is asked to confirm the operation by pressing the
ENTER key, pressing any other key will abort the operation.
Note: The instrument must be in a hydrogen free environment
with the LCD indicating less than 0.1% hydrogen before
invoking the Reset operation.
During Reset the LCD indicates a countdown to completion and the
Probe tip LED will be yellow.
2.10 Zero Operation
The Zero Operation is used to zero the hydrogen reading if the
instrument is reporting low levels (0.001% to 0.01%) of hydrogen when
no hydrogen is present. This operation can be invoked from the keypad
during Normal Operation by pressing and holding ◄ (left arrow
button) or from the Configuration Menu (see Section 2.11). Once
invoked, the user is asked to confirm the operation by pressing the
ENTER key, pressing any other key will abort the operation.
Note: The instrument must be in a hydrogen free environment
with the LCD indicating less than 0.1% hydrogen before
invoking the Zero operation.
2.11 Configuration Menu
The Configuration Menu is used to display and modify instrument
settings and can be entered by pressing and holding the ENTER button.
The configuration parameters are summarized below with details in the
Teledyne Analytical Instruments 11
Startup and Operation Model 2240
following sections. The keypad is used to navigate the menu as shown in
Table 2-1.
Table 2-1: Navigation Button Functions
Key Navigation Editing Values
ENTER
▲
▼ Next Menu Decrease Value No
► Enter Submenu Move Cursor Right No
◄ Exit Submenu (Back) Move Cursor Left No
◄► Exit Configuration Undo Changes No
Enter submenu Select Value Yes
Previous Menu Increase Value No
The functions accessible from the Configuration Menu are:
• Information Display
• Reset Sensor
• Zero Sensor
• Field Calibrate
• Exit
These functions are described in the following sections. Figure 2-7
shows how to navigate through the Configuration Menu.
Query
Answer
Teledyne Analytical Instruments 12
Handheld Hydrogen Leak Detector Startup and Operation
Figure 2-7: Configuration Menu Navigation
2.12 Information Display
The Information Display (Information Disp.) menu allows the user
to view useful information about the instrument including firmware
revisions, serial number, and calibration date.
Firmware Rev:
Teledyne Analytical Instruments 13
Displays the sensor pod and controller firmware.
The left most number preceded by an ‘S’ is the
Startup and Operation Model 2240
Probe firmware revision. The right most number
preceded by a ‘C’ is the Controller firmware
revision. For example: S 1.23 C2.34
firmware version 1 .23 and Controller firmware
version 2.34
Serial Number: Displays the product serial number. For example:
50123
Calibration Date: Displays the date of last factory calibration,
MM/DD/YY. For example: 5/8/06 for 8 May
2006.
for Probe
2.13 Reset Sensor
The Reset Sensor menu is used to invoke the Reset Operation as
described in Section 2.9.
2.14 Zero Sensor
The Zero Sensor menu is used to invoke the Zero Operation as
described in Section 2.10.
2.15 Field Calibrate
The Field Calibrate menu shows the date of the last field calibration
and allows the user to invoke the Verify, Calibrate, and Clear functions.
Verify Sensor:
Calibrate Sensor: Press ENTER to invoke the Calibrate function (see
Clear Field Cal: Press ENTER to invoke the Clear function (see
Press ENTER to invoke the Verify function (see
Section 3.4).
Section 3.5).
Section 3.6).
Teledyne Analytical Instruments 14
Handheld Hydrogen Leak Detector Field Verify/Calibration
Field Verification and Calibration
3.1 Gases
Verification or calibration requires the availability of the following
certified gases:
• 2.00% hydrogen by volume in air (20,000 ppm)
• 0.1% hydrogen by volume in air (1000 ppm)
• Zero grade, hydrogen-free air, ambient air can be used instead
of certified zero grade air if the user has high confidence that it
is a hydrogen-free environment.
3.2 Gas Connection
Gases are applied to the unit thru the use of the Calibration Cup
Assy. (P/N 50000009) available from manufacturer.
3.3 Numerical Changes
In the following sections when queried to change a numeric value
the ▲ (up arrow) and ▼ (down arrow) keys are used to
increment/decrement the value based on the selected digit. If the ones
digit is selected the value will increment/decrement by one (9
increments to 10, 10 decrements to 9). The ◄ (left arrow) and ►
(right arrow) keys are used to select another digit. To change a value of
0 to 100 first select the hundreds digit then press the ▲ up arrow.
Pressing ◄► (the left and right arrows simultaneously) will clear any
changes made and restore the previous value. Once the correct value is
displayed press the ENTER key to save it.
3.4 Verify Sensor
The Verify function allows the user to check the instrument’s
calibration. If Verify is successful then the user is asked to enter the new
Teledyne Analytical Instruments 15
Field Verify/Calibration Model 2240
verification date. If Verify fails the field calibration values are erased,
restoring the last factory calibration.
To perform the verify test:
Table 3-1: Verify Calibration Procedure
Step Display User Response
1
2
3
4
5
6
7
8
9
10
11
Hydrogen <0.001% H2
Information Disp.
Reset Sensor
Zero Sensor
Field Calibrate
XX/XX/XX
Verify Sensor
Verify Sensor
Are you sure?
Verify Sensor in
Progress
Apply 0.000% H2
Are you sure?
Apply 0.000% H2
In Progress
Apply 0.000% H2
Settle
Press ENTER.
Press ▼
Press ▼
Press ▼
Press ENTER or ►
Press ENTER
Press ENTER to verify sensor, or any other key to
exit.
Verify Test begins
With the Calibration Cup that accompanies the
instrument, apply hydrogen-free, ultra-zero air to the
Probe sensor. The Probe Tip LED will remain Green.
Press ENTER.
0% Verify Test starts
Checking sensor temperature.
12
13
14
15
Apply 0.000% H2
Wait xxxx
Apply 0.000% H2
Finding Average
Apply 0.100% H2
Are you sure?
Apply 0.100% H2
In Progress
Teledyne Analytical Instruments 16
Wait for sensor reading to stabilize, until xxxx = 0.
Measuring sensor response to test gas.
With the Calibration Cup, apply 0.1% hydrogen
(balance air) to the Probe sensor. The Probe Tip
LED will change from Green to Red. One (or two)
yellow LEDs in the LED Bar Graph Array will turn on.
Press ENTER.
0.1% Verify Test starts
Handheld Hydrogen Leak Detector Field Verify/Calibration
Step Display User Response
16
17
18
19
20
21
22
23
24
Apply 0.100% H2
Settle
Apply 0.100% H2
Wait xxxx
Apply 0.100% H2
Finding Average
Apply 2.000%H2
Are you sure?
Apply 2.00% H2
In Progress
Apply 2.00% H2
Settle
Apply 2.00% H2
Wait xxxx
Apply 2.00% H2
Finding Average
Enter Date:
1.0000 M
Checking sensor temperature.
Wait for sensor reading to stabilize, until xxxx = 0.
Measuring sensor response to test gas.
With the Calibration Cup, apply 2.0% hydrogen
(balance air) to the Probe sensor. The Probe Tip
LED will remain Red. Three yellow LEDs in the LED
Bar Graph Array will turn on. Press ENTER.
2.00% Verify Test starts
Checking sensor temperature.
Wait for sensor reading to stabilize, until xxxx = 0.
Measuring sensor response to test gas.
Enter the current month (1-12) using the▲ (up arrow)
and▼ (down arrow) keys.
25
26
27
Enter Date:
1.0000 D
Enter Date:
6.0000 Y
Verify Sensor
Passed
Enter the current day (1-31) using the▲ (up arrow)
and▼ (down arrow) keys.
Enter the current year (7=2007, 12=2012, etc.)
using the▲ (up arrow) and▼ (down arrow) keys.
Verify is complete, press any key.
Note the following:
1. If the unit passes verification, calibration is not required at this
time. The Verify Function stops at this point.
2. If the unit fails verification, TAI recommends calibration.
Continue with the following steps.
Teledyne Analytical Instruments 17
Field Verify/Calibration Model 2240
Step Display User Response
The Verify Test has failed. Calibration is
recommended. With the Calibration Cup, apply
hydrogen-free, ultra-zero air to the Probe sensor.
Wait for the LED Bar Graph array in the Probe to
show only one (or zero) yellow LEDs. Press ENTER
28
Verify Sensor
Error:
29
30
31
32
33
34
35
36
37
38
39
Field Calibrate
XX/XX/XX
Exit
Information Disp.
Reset Sensor
Reset Sensor
Are you sure?
Reset Sensor
In Progress
Reset Sensor
Done
Reset Sensor
Zero Sensor
Field Calibrate
XX/XX/XX
Verify Sensor
Press ▼
Press ▼
Press ▼
Carry out the Reset function to speed the recovery
from hydrogen exposure to move on to Calibration.
Press ENTER.
Press ENTER
During Reset, the Probe Tip LED will be orange.
Press ENTER
Press ▼
Press ▼
Press ENTER or ►
Press ▼
40
Calibrate Sensor
Teledyne Analytical Instruments 18
Press ENTER to perform field calibration. Go to Step
8 of Section 3.5.
Handheld Hydrogen Leak Detector Field Verify/Calibration
3.5 Calibrate Sensor
The Calibrate function allows the user to perform a field calibration
of the instrument. After Field Calibration TAI recommends running the
Verify Function. To carry out a Field Calibration follow the procedure
listed in Table 3-2.
Table 3-2: Field Calibrate Procedure
Step Display User response
Hydrogen
1
<0.001%H2
Press ENTER
2
3
4
5
6
7
8
9
10
11
12
Information Disp
Reset Sensor
Zero Sensor
Field Calibrate
XX/XX/XX
Verify Sensor
Calibrate Sensor
Calibrate Sensor
Are you sure?
Calibrate Sensor
In Progress
Apply 0.000%H2
Are you sure?
Apply 0.000%H2
In Progress
Apply 0.000%H2
Settle
Press ▼
Press ▼
Press ▼
Press ENTER or ►
Press ▼
Press ENTER
Press ENTER to Calibrate sensor, any other key to
exit.
Calibration begins.
With the Calibration Cup that accompanies the
instrument, apply hydrogen-free, ultra-zero air to the
Probe sensor. The Probe Tip LED will remain
Green. Press ENTER.
0% Calibration starts.
Checking sensor temperature.
13
14
Apply 0.000%H2
Wait xxxx
Apply 0.000%H2
Finding Average
Wait for sensor reading to stabilize until xxxx = 0.
Measuring sensor response to test gas.
Teledyne Analytical Instruments 19
Field Verify/Calibration Model 2240
Step Display User response
With the Calibration Cup, apply 0.1% hydrogen
(balance air) to the Probe sensor. The Probe Tip
LED will change from Green to Red. One (or two)
yellow LEDs in the LED Bar Graph Array will turn
on. Press ENTER.
15
Apply 0.100%H2
Are you sure?
16
17
18
19
20
21
22
23
24
Apply 0.100%H2
In Progress
Apply 0.100%H2
Settle
Apply 0.100%H2
Wait xxxx
Apply 0.100%H2
Finding Average
Apply 2.000%H2
Are you sure?
Apply 2.000%H2
In Progress
Apply 2.000%H2
Settle
Apply 2.000%H2
Wait xxxx
Apply 2.000%H2
Finding Average
0.1% Calibration starts.
Checking sensor temperature.
Wait for sensor reading to stabilize until xxxx = 0.
Measuring sensor response to test gas.
With the Calibration Cup, apply 2.0% hydrogen
(balance air) to the Probe sensor. The Probe Tip
LED will remain Red. Three yellow LEDs in the LED
Bar Graph Array will turn on. Press ENTER.
2.0% Calibration starts.
Checking sensor temperature.
Wait for sensor reading to stabilize until xxxx = 0.
Measuring sensor response to test gas.
25
26
27
28
29
Calibrate Sensor
Done
Field Calibrate
XX/XX/XX
Exit
Information Disp
Reset Sensor
Teledyne Analytical Instruments 20
Calibration is complete. Press ENTER.
Press ▼
Press ▼
Press ▼
Carry out the Reset function to speed the recovery
from hydrogen. Press ENTER.
Handheld Hydrogen Leak Detector Field Verify/Calibration
Step Display User response
With the Calibration Cup, apply hydrogen-free, ultra-
30
Reset Sensor
Are you sure?
zero air to the Probe sensor. Wait for the LED Bar
Graph array in the Probe to show only one (or zero)
yellow LEDs. Press ENTER.
31
32
33
34
35
36
Reset Sensor
In Progress
Reset Sensor
Done
Reset Sensor
Zero Sensor
Field Calibrate
XX/XX/XX
Verify Sensor
During Reset, the Probe Tip LED will be orange.
Press ENTER
Press ▼
Press ▼
Press ENTER or ►
With a successful calibration, TAI recommends that
the user run the Verify Test. Press ENTER. Go
back to Section 3.4, Step 7.
If a “Calibrate Sensor Error” message appears, continue with the
steps below:
Step Display User response
Calibration failed. With the Calibration Cup, apply
37
Calibrate Sensor
Error
hydrogen-free, ultra-zero air to the Probe sensor.
Wait for the LED Bar Graph array to show only one
(or zero) yellow LEDs. Press ENTER.
38
39
40
41
42
43
Field Calibrate
XX/XX/XX
Exit
Information Disp.
Reset Sensor
Reset Sensor
Are you sure?
Reset Sensor
In Progress
Press ▼
Press ▼
Press ▼
Carry out the Reset function to speed the recovery
from hydrogen exposure. Press ENTER.
Press ENTER
During Reset, the Probe Tip LED will be orange.
Teledyne Analytical Instruments 21
Field Verify/Calibration Model 2240
Step Display User response
44
45
46
47
48
49
Reset Sensor
Done
Reset Sensor
Zero Sensor
Field Calibrate
XX/XX/XX
Verify Sensor
Calibrate Sensor
Press ENTER
Press ▼
Press ▼
Press ENTER or ►
Press ▼
Press ENTER to repeat Field Calibration. Go back
to Step 8 of Section 4.5.
3.6 Clear Field Calibration
The Clear function restores the instrument to the last factory
calibration. Once entered into the Clear function (see Section 2) the user
is prompted thru the verification routine as follows:
Table 3-3: Clear Function Procedure
Step Display User response
Clear Field Cal
1
Are you sure?
Teledyne Analytical Instruments 22
Press ENTER to clear field calibration values, any
other key to exit.
Handheld Hydrogen Leak Detector Hydrogen Sensing
Hydrogen Sensing Considerations
From any given source, hydrogen gas disperses rapidly and
generally upward due to the very low density of hydrogen compared to
air. Understanding this behavior allows the operator to more effectively
search for hydrogen leaks.
If the sensor element is near (and above) the leak, the concentration
will likely be higher but the leak may be difficult to locate. As hydrogen
dissipates (generally above the leak) the concentration decreases.
Generally, greater distances will increase the chance of intercepting the
leak stream, but if the sensor is too far away, the response may be too
weak to detect.
When drafts or air currents are present, hydrogen will tend to be
dispersed. Testing for hydrogen leaks downwind of the leak area may
increase the chance of detecting the leak.
If hydrogen is rising in an enclosed building (where there may be a
layer of hot air near the ceiling) the hot air near the ceiling may have a
lower density and act to retard the hydrogen from continuing to rise as
rapidly as it did in lower layers of air. Thus, sensing hydrogen near
ceiling areas with high temperatures present may not be as effective.
Low temperatures can also affect the behavior of hydrogen.
Hydrogen stored in a liquid state is at an extremely low temperature.
The low temperature of any escaping hydrogen will be of a higher than
normal density and may initially move downward. As the hydrogen
warms, it will begin to rise upward. When checking for a leak in areas
where liquid hydrogen is stored, check both above and below the area of
concern.
Teledyne Analytical Instruments 23
Hydrogen Sensing Model 2240
Teledyne Analytical Instruments 24
Handheld Hydrogen Leak Detector Maintenance
Maintenance
5.1 Routine Maintenance
Aside from normal cleaning and battery charging, routine
maintenance is limited to calibration verification and recalibration. For
verification and calibration procedures, refer to Sections 3.4 and 3.5.
There are no user-serviceable items inside the instrument.
5.2 Battery Charging
To recharge the unit’s battery:
1. Ensure the unit is powered OFF. Allow batteries in an extreme
temperature to warm or cool to within 10-45 °C.
2. Disconnect the coiled cord from the Controller.
3. Connect the battery charger to the Controller.
4. Using the appropriate A/C plug adapter for the region of use,
plug the battery charger into the A/C supply.
5. The battery charger indicator light will illuminate according to
charge status as follows:
• OFF: No battery
• FLASHING GREEN: Fast charging
• STEADY GREEN: Fully charged
• STEADY ORANGE: Standby
• FLASHING RED: Error
Note: Complete charging may take up to 4 hours for a fully
discharged battery.
Teledyne Analytical Instruments 25
Maintenance Model 2240
5.3 Cleaning
If the unit becomes soiled, clean the unit with a lint-free cloth. Use
special care when cleaning the handheld probe assembly. Small debris
or other material may collect over the sensor tip. Clean the tip with a
gentle wiping using a clean lint-free cloth or paper.
5.4 Troubleshooting
The following table offers guideline for diagnosing and correcting
common problems associated with the Model 2240.
Table 5-1 Troubleshooting
Symptom Action
Controller LCD indicates
Sensor Error after power
on
Controller LCD indicates
broken
BATTERY LED is red Charge the battery completely; see Section 5.2.
Turn off the instrument and verify that the Probe is properly
connected to the Controller.
Then turn off the instrument and verify that the Probe is
properly connected to the Controller and that there isn’t any
damage to the unit.
Teledyne Analytical Instruments 26
Handheld Hydrogen Leak Detector Appendix
Appendix
A.1 Specifications
Range: 0.0015% (15ppm) to 100% hydrogen by
volume in air.
Response Time: Indication of hydrogen within seconds.
Stabilization to final value depends on
concentration.
Temperature: Ambient Operating: -0 to +40 °C
Storage: -20 to +50 °C
Power: Internal rechargeable Lithium Ion battery
yields over 10 hours of operation. Battery
recharge time: 4 hours with included
charger.
Calibration Period: Recommended user verification on a 3
month basis and calibration on a 12 month
basis.
Dimensions: See following figures (dimensions in
inches).
Weight: 975 g (2.15 lb.) unit and carrying pouch
2.2 kg (5 lb.) shipping weight (unit with
accessories)
Water Ingress Protection: IP64 (Dust-tight, protected against water
spray from any direction).
Approvals and Ratings: CE 31 May 2007
Product Life Expectancy: 10 years
Teledyne Analytical Instruments 27
Appendix Model 2240
Figure A-1: Dimensions
A-2 Recommended Spare Parts
Qty. Part Number Description
1 P1529 Probe Assembly
1 CP2705 Controller Assembly
1 CP2706 Coiled Probe Cable
1 CP2707
1 P1530 Detector Pouch
1 CP2708 Sensing System Case
Battery Charger
A minimum charge is applicable to spare parts orders.
Note: Orders for replacement parts should include the part
number (if available) and the model and serial number of
the instrument for which the parts are intended.
Orders should be sent to:
TELEDYNE Analytical Instruments
16830 Chestnut Street
City of Industry, CA 91749-1580
Phone (626) 934-1500, Fax (626) 961-2538
Web: www.teledyne-ai.com
or your local representative.
Teledyne Analytical Instruments 28
Handheld Hydrogen Leak Detector Index
Index
A/C plug adapter, 25
address, 28
air current, 23
APEX CE, 2
applications, 1
approvals, 27
bar graph, 2, 8
battery, 1, 27
battery charger, 2, 25
battery charging procedure, 25
battery indicator, 2, 7
battery LED. See battery indicator
battery LED color, 25
broken, 11
calibrate function, 14, 19
calibrate function procedure, 19
calibration, 15
calibration cup, 15
calibration date, 13, 14
calibration period, 27
caution sign, iv
cleaning, 26
clear function, 14, 22
clear function procedure, 22
coiled cord, 1
combustible gas warning, x
components, 5
concentration, 1, 7
configuration menu, 10, 11, 13
Controller, 6
copyright, ii
countdown, 6, 11
current value, 8, 10
density, 23
dimensions, 27, 28
display, 2
enclosure, 2
ENTER button, 2
error messages, 10
error status, 6
features, 2
field calibrate menu, 14
field calibration, 12, 19
figures listing, viii
firmware revision, 13, 14
hydrogen concentration. See
concentration
hydrogen detected LED, 10
hydrogen dispersion, 23
hydrogen exposure, 8
hydrogen sensing, 23
increment/decrement values, 15
information display, 12
information display menu, 13
initialization mode, 6
internal failure, 11
items shipped, 5
keypad, 2, 10
LCD, 2, 7
leak detection, 8
lifetime, 27
liquid hydrogen, 23
lithium-ion battery. See battery
low temperature, 23
manuals, additional, v
navigation buttons, 2, 12
normal mode, 7
OFF/ON button, 2
ON/OFF button, 6, 7
peak hydrogen, 8, 9, 10
peak hydrogen clear, 10
power, 2, 27
probe, 1
probe cable, 6
probe tip, 1, 7
probe tip LED, 11
probe tip LED color, 9
range, 27
recovery, 11
reset operation, 8, 10, 14
reset sensor, 12
reset sensor menu, 14
response time, 27
routine maintenance, 25
safety information, iv
self-test, 6
Teledyne Analytical Instruments 29
Index Model 2240
sensitivity, 7
Sensor Error, 11
sensor wand. See probe
serial number, iii, 13, 14
setup, 6
shipping damage, 5
shutdown, 7
specifications, 27
startup, 6
startup LED, 6
system startup, 9
tables listing, ix
technician symbol, iv
Teledyne address, 28
temperature, 27
troubleshooting, 26
unit ready, 9
unit ready LED, 7
user interface, 2, 3
verification date, 16
verify function, 14, 15
verify procedure, 16
warning sign, iv
warranty, ii
water, 2, 27
web address, 28
website address, v
weight, 27
Wide Range Sensor, 2, 6
zero, 6, 7, 10
zero operation, 11, 14
zero sensor, 12
zero sensor menu, 14
Teledyne Analytical Instruments 30
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