Honeywell XT Series User manual

XT Series
Personal Gas Detector
Operating Instructions

XT Series Personal Gas Detector 3
1. Introduction 5
2. Activating the Detector 6
3. Display Features 7
4. Gas Alarms 9
5. Maximum Gas Reading 10
6. Performing a Self-Test 11
7. Testing Sensors and Alarms (Bump Testing) 12
8. End of Life Alarm 12
9. Safety Shutdown 13
10. Error Codes 13
11. Zero Calibration (Oxygen Span) 14
12. Optional Span Calibration (CO AND H2S Versions Only) 14
13. Specifications 16
14. Contacting Honeywell Analytics 17
15. Sensor Cross-Sensitivity Data 18
16. Accuracy Statement 20
17. Warranty 21
Table of Contents

XT Series Personal Gas Detector
4
This manual is supplied pre-printed in English only. Alternative language versions are available
for download from the Honeywell Analytics website:
www.honeywellanalytics.com
Dit handboek is alleen beschikbaar in de Engelse taal. Alternatieve talen versies zijn electronisch
beschikbaar via onze web pagina van Honeywell Analytics:
www.honeywellanalytics.com
Ce manuel est fourni préimprimé en anglais seulement. Les versions alternatives de langue sont
disponibles pour le téléchargement du website
www.honeywellanalytics.com de Honeywell Analytics
Se provee este manual imprimió en inglés solamente. Las versiones alternativas de la lengua
están disponibles para la transferencia directa del website
www.honeywellanalytics.com de Honeywell Analytics
Questo manuale viene fornito stampato solo in Inglese. Versioni in altre lingue, incluso l’italiano,
sono disponibili e possono essere scaricate dal sito web della Honeywell Analytics www.
honeywellanalytics.com
Diese Bedienungsanleitung wird in gedruckter Form nur in englischer Sprache verfügbar sein.
Zusätzliche Sprachen stehen zum Download auf folgender Webseite zur Verfügung. www.
honeywellanalytics.com

XT Series Personal Gas Detector 5
Warning: Read Manual Prior to Use
1. Introduction
The XT is a disposable, easy to use, personal gas detector, designed for 2 years continuous
monitoring of the atmosphere for potentially hazardous levels of oxygen deficiency or toxic gas.
SAFETY INFORMATION
Substitution of components may impair intrinsic safety•
Do not activate the detector after the date on the packaging•
Perform a self-test prior to each day’s use•
Do not use in oxygen-enriched atmospheres•
Periodically test the sensors response to gas by exposing the detector to a target gas•
concentration that exceeds the alarm set points. Manually verify that the audible, visual
and vibrating alarms are activated
Exposure to extremely high levels of over-range gas may cause temporary loss of sensor•
accuracy. Allow monitor to stabilize in zero gas atmosphere before reuse. It is recommended
to perform sensor response gas test prior to reuse.
IMPORTANT NOTICE
Honeywell Analytics can take no responsibility for use of its equipment if it is not done in accordance
with the appropriate issue and/or amendment of the relevant manual. If further details are required
which do not appear in this manual, contact Honeywell Analytics or their agent.
Honeywell Analytics shall not be liable for any incidental or consequential damages in connection
with any deletions, errors or omissions in this Manual.

XT Series Personal Gas Detector
6
2. Activating the Detector
To activate, hold Test Button (as shown below) for up to 20 seconds.The detector will emit 5 beeps
and 5 flashes.The XT will warm up for one minute, showing a countdown in seconds and the Test
Pass icon ( ) will be flashing. It will then set the remaining-life clock and perform a self-test. If the
detector passes, the Test Pass icon ( ) is displayed. If the Test Fail icon ( ) is displayed then the
detector has failed the self-test – please refer to the instructions in Section 6.
Visual Alarm
Display
Test Button
Gas Type
Audible Alarm

XT Series Personal Gas Detector 7
3. Display Features
A
B
CD
E
F
G
H
I
J
BatteryA)
Test Fail IconB)
Test Pass IconC)
Level 1 Alarm: CO, HD) 2S, O2
Level 2 Alarm: CO, H2S
Level 2 Alarm: OE) 2
Lifetime: MonthsF) , Days , Hours
Concentration UnitsG)
Low Peak (OH) 2)
High Peak (CO, HI) 2S, O2)
ReadoutJ)
The XT is available with two types of display; Standard and Real Time. This section will illustrate
the difference between the two display types.
On XT’s equipped with the Standard Display, the remaining lifetime clock indicates how much
longer the detector will operate.This is shown on the display as a countdown of remaining months
(indicated by the icon), then days ( ) and finally hours ( ). The example in the table on the next
page shows 24 months remaining.

XT Series Personal Gas Detector
8
Should the Standard Display XT unit be exposed to a level of gas in excess of the alarm set points
the unit will display the concentration of the gas. If the measured reading exceeds the range of
the detector then the numerical digits will flash.
The Real Time Display XT displays the concentration reading all the time. The lifetime remaining
is displayed in the self-test mode.
Standard Display Real Time Display
Below Alarm Displays the lifetime remaining Displays the gas concentration
Above Alarm Displays the gas concentration Displays the gas concentration
Self-test Alarm set points, peak reading
and time since peak
Alarm set points, peak reading,
time since peak and lifetime
remaining

XT Series Personal Gas Detector 9
4. Gas Alarms
The XT has two levels of gas alarm, of which the level 2 alarm is more urgent than the level 1
alarm. The alarm set points are:
Gas Type Level 1 Alarm Level 2 Alarm
H2S 10 ppm 15 ppm
CO 35 ppm 100 ppm
O2 23.5% v/v 19.5% v/v
Alarm Level Display* Audible Alarm Visual Alarm Vibrating Alarm
Level 1
Alarm
blink
3 beeps per
second
3 flashes per
second Yes
Level 2
Alarm
blink
5 beeps per
second
5 flashes per
second Yes
* Examples shown for H2S
Note:
When the detected gas levels return to a safe level, the gas alarm will stop. The user cannot
cancel an alarm.
Note:
New alarm level 1 and 2 can be created accordance with customer’s request.

XT Series Personal Gas Detector
10
5. Maximum Gas Reading
The XT records the maximum readings measured under an alarm condition, and records the
number of hours since this occurred. As each new higher level of gas is detected this counter is
reset to zero, and after 24 hours has elapsed the counter is also reset to zero hours.
The maximum gas readings (minimum for oxygen) can be viewed by pressing the Test button within
24 hours of the gas alarm. This will cause the instrument to perform a self-test (see Section 6),
after which the alarm set points and the maximum readings will be displayed. For instance;
the level 1 and level 2 alarm set pointsa)
Level 1 CO Level 2 CO Level 1 O2Level 2 O2
the maximum or minimum reading measuredb)
To clear the peak value, press the Test
button once while the maximum (peak)
value is displayed.
Maximum reading CO Minimum reading O2
the time elapsed since the maximum reading occurred in hours (e.g. 4 hours)c)
4 Hours

XT Series Personal Gas Detector 11
6. Performing a Self-Test
When the Test button is pressed the unit checks the sensor, circuit, batteries, audible and visual
alarms and vibrating alarm.
After 24 hours has elapsed since the self-test was last performed the Test Pass icon ( ) will
be blinking. The self-test must then be performed by pressing the Test button. The detector will
do the following:
Turn on all the display elements•
Tests the audible and visual alarms and vibrating alarm•
Check the battery, electronic circuit and sensor•
Perform a sensor test•
Display the level 1 and level 2 alarm setpoints•
Display the maximum (minimum for O• 2) gas reading (if such a reading has occurred)
If a gas alarm has occurred since the Test button was last pressed the relevant alarm•
level icon will be displayed
Lifetime Remaining (for units with Real Time Display)•
The result of the self-test as follows:•
Self-Test Result Display Audible Alarm Visual Alarm
Pass None None
Fail 1 long beep 1 flash
If the self-test fails repeat the self-test. The XT will warm up for one minute before the next self-
test is performed. If it fails three consecutive times then the detector will display an error code
(see Section 10).

XT Series Personal Gas Detector
12
Additionally, the XT will periodically check its battery, electronic circuit and sensor. If it fails the
Test Fail icon ( ) will be shown and the Test Pass icon ( ) will blink. If it passes then the Test
Pass icon will be displayed.
7. Testing Sensors and Alarms (Bump Testing)
To maintain optimal accuracy, the detector should be periodically supplied with a known
concentration test gas (bump test) and if the readings are outside of 15% of the applied gas
concentration, a span calibration should be performed, under conditions of standard temperature
(15°C to 25°C/59˚F to 77˚F) humidity and pressure.Follow local regulations and/or your company’s
policy on the frequency of bump testing. For more information on test gas, contact your local
Honeywell Analytics representative.
8. End of Life Alarm
When the XT has less than 1 day of remaining life it will flash the digits, as below:
End of Life Warning End of Life Reached
When the XT’s life has ended the display will blink as shown above, the audible will beep once
every 15 seconds, and the visual will flash once every 15 seconds, and the vibrating alarm will
operate once every 15 seconds, until the Test button is pressed. The audible will then be turned
off, and the detector will shutdown, displaying the relevant error code (see Section 10).

XT Series Personal Gas Detector 13
9. Safety Shutdown
In the event that the battery runs out before the end of life is reached (due to excessive alarms)
the battery icon will blink, the audible alarm will beep once every 15 seconds, and the visual alarm
will flash once every 15 seconds, until the Test button is pressed. The audible alarm will then be
turned off, and the detector will shutdown. A shutdown condition can also occur due to failure of
the electronic circuitry or sensor. The relevant error code is shown (Section 10).
Note:
Shut down conditions due to extreme temperatures can be reset by moving the
detector to a normal range temperature and pressing the Test button.
10. Error Codes
Error Code Reason
E 01 Sensor Output Range error
E 02 Battery has run out
E 04 End of Life reached
E 08 System Fault
E 16 EEPROM Error
Sensor Output Range Error

XT Series Personal Gas Detector
14
11. Zero Calibration (Oxygen Span)
This must be performed in a clean atmosphere, and it is recommended that it be performed daily
or after any gas alarm. Depress the Test button for 5 seconds. The instrument will initiate a zero
by showing a countdown with a ‘0’ for zero calibration, followed by a countdown from ‘20’ to ‘0’.
When the zero calibration has been completed the XT will indicate a pass by beeping twice,
flashing twice, and the ( ) symbol will flash for 5 seconds.
blink
If the zero calibration is not OK then the XT will give a single beep and a single flash, the Test
Fail icon ( ) will be displayed, and the zero calibration should be repeated.

XT Series Personal Gas Detector 15
12. Optional Span Calibration (CO AND H2S Versions Only)
While the XT requires no calibration for its lifetime of 24 months there may be an occasion when
it is deemed necessary to carry out a calibration, for instance, if a self-test fails. To carry out the
span calibration the user requires the following additional equipment which can be purchased
from Honeywell Analytics.
Gas cylinder containing a known concentration calibration gas as follows:•
Toxic Gas Calibration Concentration
H2S 25 ppm in air
CO 100 ppm in air
A gas regulator supplying the gas at 300ml/min flow rate•
Tubing for use between the regulator and the test adaptor (supplied)•
Carry out the zero calibration procedure as described in Section 11. Only if the zero calibration
is successful can a span calibration be performed. At the end of the zero calibration procedure,
the test button must be pressed continuously for 5 seconds while the ( ) symbol is still flashing.
Connect the gas cylinder and test adaptor and apply the gas at 300 ml/min. The instrument will
display a ‘C’ (for calibration), and count down from ‘60’ to ’0’.
If the span calibration is successful the unit will give 2 beeps, 2 flashes and displays the Test Pass
icon ( ). If it fails the instrument gives a long beep, long flash and displays the Fail icon ( ) (the
calibration remains as it was before the span calibration was attempted).
Span Calibration - Pass Span Calibration – Fail

XT Series Personal Gas Detector
16
13. Specification
Maximum Operating Life 24 months from activation, assuming 3-5 minutes of
alarm per day under normal operating conditions*
Sensor Range
CO 0 to 1000 ppm (display: 0-200 ppm)
H2S0 to 100 ppm (display: 0-100 ppm
O20 to 30% v/v (display: 0-25% v/v)
Alarm Setpoints
Level 1 Level 2
CO 35 ppm 100 ppm
H2S10 ppm 15 ppm
O223.5% 19.5%
Calibration
CO/H2SZero adjustment (optional Span)
O2Span adjustment
Shelf Life 12 months: CO/H2S
6 months: O2
Operating Temperature -4°F to +122°F (-20°C to +50°C)
Humidity 5-95% RH (non-condensing)
Audible Alarm 95db at 4” (95db at 10cm)
Visual Alarm High intensity red LEDs

XT Series Personal Gas Detector 17
Vibrating Alarm Standard
Display Custom LCD
Sensor Type Electrochemical
Battery 3.6V non-replaceable Lithium battery
IP Rating IP67
Intrinsic Safety ATEX II 2 Ex ia IIC T4
UL/ C-UL Class I, Div. 1, Groups A,B,C&D, T4
RFI/EMC CE EN50270 and EN55011
Dimensions 3.4“(H) x 2“(W) x 1.1“(D) (87 mm x 50 mm x 27 mm)
Weight
CO/H2S2.57 oz (73.0g)
O22.88 oz (81.3g)
*Operating Life may be reduced by excessive alarms.
Note:
New alarm level 1 and 2 can be created accordance with customer’s request.
14. Contacting Honeywell Analytics
To contact Honeywell Analytics, call: + 41 (0)44 943 4300 (Europe, Middle East, Africa
and India)
+ 1 800 538 0363 (Americas)
+ 82 (0)2 2025 0300 (Asia Pacific)
Or visit our website at www.honeywellanalytics.com

XT Series Personal Gas Detector
18
15. Sensor Cross-Sensitivity Data
H2S SureCell Cross Sensitivity Data
Gas Type Concentration Applied
(ppm)
Reading
(ppm H2S)
Carbon Monoxide 50 0
Sulfur Dioxide 2 0
Nitrogen Dioxide 3 0
Nitric Oxide 25 0
Chlorine 0.5 0
Hydrogen 100 0
Ethylene 100 0
Carbon Dioxide 5000 0

XT Series Personal Gas Detector 19
CO SureCell Cross Sensitivity Data
Gas Type Concentration Applied
(ppm)
Reading
(ppm CO)
Hydrogen Sulfide 25 0
Sulfur Dioxide 50 0.5
Nitrogen Dioxide 800 20
Nitric Oxide 5 8
Chlorine 2 0
Hydrogen 100 20
Ethylene 100 85
Ammonia 100 0
O2Cross Sensitivity Data
Gas Type Concentration Applied Reading
(%v/v O2)
Hydrogen 100% -9%
Methane 100% 0
Nitrogen Dioxide 25 ppm 0

XT Series Personal Gas Detector
20
16. Accuracy Statement
To achieve optimal accuracy, the detector should be periodically supplied with a known
concentration test gas, and if the readings are outside of 15% of the applied gas concentration,
a span calibration should be performed, under conditions of standard temperature (15°C to
25°C), humidity and pressure.
Poisons should not affect the accuracy of the XT but certain compounds can block the gas access
port of the sensor, such as silicone oils, giving a lower than expected reading.