WatchGas UNI Disposable User manual

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UNI Disposable Single Gas Detector
User Manual
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Detection UNI Disposable Single Gas Detector User Manual
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Contents
Contents 2
Description 3
Warning 3
Proper Disposal 3
1 Product Overview 4
2 Normal Operation 5
3 Normal Mode Operation 5
3.1 Turning on the unit 6
3.2 Warm up sequence 5
3.3 Remaining Display 5
3.4 Alarm 5
4 Conguration Mode 6
4.1 Enter Conguration Mode 6
4.2 Zero (fresh air) calibration 6
4.3 Replance the Sensor 6
5 Maintanance 6
5.1 Replace the sensor lter 7
6 Alarm signal summary 8
7 Trouble shooting 9
8 Specications 10
9 Limited Warranty 11

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User Manual UNI Disposable Single Gas Detector
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Description
The UNI Disposable is a disposable or a low maintenance version of the UNI Sustainable single gas
detector. It detects HS, CO or O in a selection of models for an operation life of either 12 months
or 36 months. The detector has a large LCD providing maximum readability in the eld. Six bright
red LEDs allow for quick alarm notication. Constructed of strong and durable material, the UNI is
designed to be comfortable yet drop resistant.
Warning
This manual must be carefully read by all individuals who have or will have the responsibility of using,
maintaining or servicing this product. The product will perform as designed only if it is used, maintain-
ed and serviced in accordance with the manufacturer’s instructions.
• Never operate the monitor when the cover is removed.
• Remove the monitor cover and battery only in an area known to be non hazardous.
• Use only WatchGas lithium battery.
• This instrument has not been tested in an explosive gas/air atmosphere having an oxygen
concentration greater than 21%.
• Substitution of components will impair suitability for intrinsic safety.
• Substitution of components will void warranty.
• It is recommended to bump test with a known concentration gas to conrm the instrument is
functioning properly before use.
• Before use, ensure that the ESD lm on the display is not damaged or peeling.
Proper Disposal
The Waste Electrical and Electronic Equipment (WEEE) directive (2002/96/EC) is intended to promote
recycling of electrical and electronic equipment and their components at end of life . This symbol
(crossed-out wheeled bin) indicates separate collection of waste electrical and electronic equipment
in the EU countries. This product may contain one or more Nickel-metal hydride (NiMH), Lithium-ion,
or Alkaline batteries. Specic battery information is given in this user guide. Batteries must be recycled
or disposed of properly. At the end of its life, this product must undergo separate collection and
recycling from general or household waste. Please use the return and collection system available in
your country for the disposal of this product.

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1. Product Overview
DETECTOR COMPONENTS
1. Audible Alarm Port
2. LED alarm window
3. LCD
4. Left Key (Conrm/Number increasing)
5. Right Key (Power/ Cursor moving)
6. Alligator clip
7. Sensor
DISPLAY SYMBOLS
1. Gas name, includes: CO, HS and O
2. Remaining time unit: Months, Days, Hours
3. Question mark (ashes once per second if
Bump due setting is enabled and the due
date has passed)
4. Unit status indicator“OK”
5. Gas concentration unit, for alarm setting
display
6. Remaining operating time (Months/Days/
Hours)
7. Battery status
1
3
3
4
4
5
5
6
6
7
7
2
2
2
2
1

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User Manual UNI Disposable Single Gas Detector
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2. Normal Operation
Normal operation is limited to the following functions:
• Displaying the remaining operating time (the unit cannot be turned o )
• Displaying (and logging) the Alarm Level if this concentration of gas is exceeded
• Entering Conguration Mode to perform a fresh air zero calibration
• Replacing the sensor lter if used in especially highly dusty or moist environments
Full bump test or calibration, setting alarm limits, and other functions can only be performed through
use of the WatchGas Docking Station by a qualied service technician.
3. Normal Mode Operation
3.1 TURNING ON THE UNIT
Press and hold the Right Key for 3 seconds, until the LCD displays , the buzzer beeps, and the
green LED ashes.
3.2 WARM UP SEQUENCE
After powered on, the unit enters a warm up and self-test sequence and shows the rmware version as
follows:
If the sensor is not able to be identied by the instrument or is not installed into the instrument,
then the screen switches between and
Lastly, the High A larm limit and and Low Alarm limit are shown.
3.3 REMAINING TIME DISPLAY
After the start-up sequence, the unit enters normal mode and displays the remaining operating time.
Once the unit is running, it cannot be turned o manually and it stays on until the battery loses power.
3.4 ALARMS
If the gas concentration exceeds an alarm limit, the display shows the alarm value being exceeded and
gives audio, visual and vibration alarms according to the table at the end of this manual (see Alarm
signal summary). Once the UNI Disposable is no longer in an alarm condition, the UNI Disposable
reverts back to the time display, but logs the alarm event in memory.
Calibration Fail Alarm (For Service Use Only) If the instrument fails calibration, it will alternately display
and the remaining run time once per second. The user can perform a manual Zero Calibration
(see below) on the instrument alone, but a full Zero/Span calibration requires the WatchGas Docking
Station.

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Bump Fail Alarm (For Service Use Only)
If the instrument fails a Bump test using the WatchGas Docking Station, it will alternately display
and the remaining run time once per second.
Bump Due Alarm (For Service Use Only)
If the Bump Due setting is enabled and the due date has passed, the question mark will ash once per
second while the display continues to show the remaining run time.
4. Conguration Mode
In Cong mode, the user can do a zero (fresh air) calibration only. In general, use the Left Key
to increase the number or conrm, use the Right Key to move the cursor or move to the next
programming item. Detailed conguration settings can be performed using the mPower Suite
software through the WatchGas Docking Station.
4.1 ENTER CONFIG MODE
Press and hold the Left Key and the Right Key simultaneously for 3 seconds. The unit prompts for a
password* by displaying and , with one digit ashing. To input the password, use the
Left Key to increase the number, and the Right Key to move the cursor. Once all four digits are entered,
the cursor will move to “OK”, use the Left Key to nish password input and enter the Cong mode. To
correct a digit input mistake, use the Right Key to move the cursor between the four digits and“OK”
mark, to change the input.
* The WatchGas Disposable preset password is 0000.
4.2 ZERO (FRESH AIR) CALIBRATION
Zero calibration is to set the base line for the sensor. It is done in fresh air or other source known to be
free of detectable gas (For an O unit, “zeroing” sets the value to 20.9%, so air must be used). When the
LCD displays press the Left Key to start zero calibration. The unit will start a 15 second count-
down, and then display the calibration result as either pass or fail . The user can abort
the zero calibration during the 15 seconds count-down by pressing the Right Key, after which is
displayed.
4.3 EXIT CONFIGURATION MODE
After zero calibration is either skipped or completed, the unit displays . Press the Left Key to exit
back to normal mode.
5. Maintanance
NOTE: The UNI Disposable is designed as a disposable instrument and does not need maintenance
under normal circumstances. However, in highly dusty or wet environments, it may be necessary to
replace the sensor lter as described below. Also The UNI Disposable has to be calibrated.
Caution
Maintenance should be performed only by a qualied person who has proper training and
fully understands the contents of the manual.

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User Manual UNI Disposable Single Gas Detector
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5.1 REPLACING THE SENSOR FILTER
The lter may need replacement under special circumstances such as use high-dust or condensing
environments. Sheets of 5 “peel-and-stick” lters are available for this purpose:
1Turn o the UNI Disposable and place it face down on a soft surface.
2Use a T10 Torx screwdriver to loosen (counterclockwise) each of the four screws.
3Remove the top cover before carefully unplugging the buzzer connector.
4Peel a lter from the sheet and center it over the sensor. Gently press down.
5Re-connect in the buzzer connector and re-install the top cover.
6Re-install the screws in the back cover. Be careful to not overtighten the screws.
SENSOR FILTER
SENSOR
BATTERY
Caution
Change battery only in area known to be non-hazardous.
Use only WatchGas battery.

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6. Alarm signal summary
Buzzer: 3 beeps per second
LED: 3 ashes per second
Vibration: 1 per second
“OVER” and “500” 1 ash per second
BUMP FAIL ALARM:
Buzzer: 1 beep per minute, LED: 1 ash per minute, Vibration: 1 per minute
“Bump” and “Remain Time”alternate display per second
HIGH ALARM: Buzzer: 3 beeps per second, LED: 3 ashes per second,
Vibration: 1 per second. “HIGH” 2 ashes per second.
LOW ALARM: Buzzer: 2 beeps per second, LED: 2 ashes per second
Vibration: 1 per second. “LOW” 2 ashes per second.
STEL ALARM: Buzzer: 1 beep per second, LED: 1 ash per second,
Vibration: 1 per second. “STEL” 2 ashes per second
TWA ALARM: Buzzer 1 beep per second, LED 1 ash per second,
Vibration: 1 per second. “TWA” 2 ashes per second
NEGATIVE DRIFT ALARM: Buzzer: 1 beep per second, LED: 1 ash per
second, Vibration: 1 per second
BUMP DUE ALARM: “?” : Flashes 2 per second

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User Manual UNI Disposable Single Gas Detector
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CAL FAIL ALARM:
Buzzer: 1 beep per minute, LED: 1 ash per minute, Vibration: 1 per minute
“CAL” and “REMAIN TIME” display alternately once per second
SENSOR ERROR: Buzzer: 1 beep per second, LED: 1 ash per second,
“SEN Err”1 ash per second
BATTERY FAIL ALARM: Buzzer: 1 beep per second, LED: 1 ash per second,
“bAT LoW”:1 ash per second
EMPTY BATTERY ALARM: Buzzer: 1 beep per minute, LED: 1 ash per
minute, Vibration: 1 per minute and Battery icon: Battery Empty prompt.
7. Trouble shooting
Problem Possible reason Solution
Can not turn on unit Battery not installed Install battery
Depleted or defective battery Replace battery
Buzzer, LED, or vibration
alarm inoperative
Bad buzzer, LEDs, or vibration alarm. Call authorized service center
Blocked alarm port Unblock alarm port

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8. Specications
Detector specications
Size 88 x 62 x 33 mm, 3.46 x 2.44 x 1.3 in
Weight 125 g, 4.4 oz
Sensors 26 electrochemical sensor options
Temperature -20°C to 50°C, -4 to 122°F
Humidity 5 - 95% RH, non-condensing
Alarm type High alarm, Low alarm, STEL alarm, TWA
alarm, adjustable. Over range alarm,
battery low alarm
Alarm signal 95dB sounder @ 30cm
Bright red LEDs
Built in vibrator
Calibration 2-point calibration, zero and span. Power-
on zero calibration with user conrmation.
Event log Up to 50 alarm events
Response time T90 15 seconds
IP rating IP67
EMI/RFI Compliant with EMC directive: 2014/30/EU
Safety certications UL/cUL:Class I, Div 1, Group ABCD
Class II, Div 1, Group EFG
Class III, Div 1
T4, -20°C ≤ Tamb ≤ +50°C
IECEx: Ex ia IIC T4 Ga
ATEX: II 1G Ex ia IIC T4 Ga
Operating life 1 year or 3 years
Sensor specications
Gas Range
CO 1 – 500 ppm
H2S0.1 – 100 ppm
O20.1 – 30.0%

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User Manual UNI Disposable Single Gas Detector
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9. Limited Warranty
WATCHGAS warrants this product to be free of defects in workmanship and materials under normal
use and service for two years from the date of purchase from the manufacturer or from the product’s
authorized reseller.
The manufacturer is not liable (under this warranty) if its testing and examination disclose that the
alleged defect in the product does not exist or was caused by the purchaser’s (or any third party’s)
misuse, neglect, or improper installation, testing, or calibrations. Any unauthorized attempt to repair
or modify the product, or any other cause of damage beyond the range of the intended use, including
damage by re, lightening, water damage or other hazard, voids liability of the manufacturer.
In the event that a product should fail to perform up to manufacturer specications during the
applicable warranty period, please contact the product’s authorized reseller or WATCHGAS service
center at [phone] for repair/return information.
WatchGas B.V.
Sextantstraat 61
2901 ZZ Capelle aan den IJssel
[phone]
The Netherlands
[e-mail] - www.watchgas.eu
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All rights reserved. No part of this publication may be reproduced, distributed, or transmitted in any form or by any means, including
photocopying, recording, or other electronic or mechanical methods, without the prior written permission of the publisher, except in the
case of brief quotations embodied in critical reviews and certain other noncommercial uses permitted by copyright law. For permission
requests, contact WatchGas B.V.