mPower Electronics UNI Lite MP110 User manual

UNI Lite
Single-Gas Detectors
MP110
User’s Guide
\\
Rev. 0.5
October 2023

UNI MP110 User’s Guide
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Contents
1. General Information................................................................................................................. 3
2. User Interface........................................................................................................................... 3
3. Display..................................................................................................................................... 4
4. Operation.................................................................................................................................. 5
4.1 Turning the Unit On and Off ........................................................................................ 5
4.2 Normal User Mode....................................................................................................... 5
4.2.1 Real Time Readings........................................................................................... 5
4.2.2 Alarm Test ......................................................................................................... 5
4.2.3 STEL.................................................................................................................. 5
4.2.4 TWA................................................................................................................... 6
4.2.5 Peak ................................................................................................................... 6
4.2.6 Alarm Log.......................................................................................................... 6
4.3 Configuration Mode ..................................................................................................... 6
4.3.1 Entering and Exiting Configuration Mode........................................................ 7
4.4 Sensor Calibration and Bump Test ............................................................................... 7
4.4.1 Zero (Fresh Air) Calibration.............................................................................. 7
4.4.2 Span Calibration................................................................................................ 7
4.4.3 Bump Test.......................................................................................................... 8
4.5 Setting Instrument Configurations................................................................................ 9
4.5.1 Alarm Limits...................................................................................................... 9
4.5.2 Span Value......................................................................................................... 9
4.5.3 Bump/Cal Intervals............................................................................................ 9
4.5.4 Gas Concentration Unit................................................................................... 10
5. Computer Interface ................................................................................................................ 10
6. CaliCase Docking Station (MP311) Calibrations.................................................................. 10
6.1 4-Bay CaliCase Set-up................................................................................................ 10
7. Maintenance and Specifications .............................................................................................11
7.1 Battery Replacement....................................................................................................11
7.2 Sensor Filter Replacement.......................................................................................... 12
7.3 Sensor Replacement ................................................................................................... 12
7.4 Troubleshooting.......................................................................................................... 13
7.5 Alarm Signal Summary.............................................................................................. 14
7.6 Instrument Specifications ........................................................................................... 16

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Read Before Operating
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, maintained and serviced in accordance with the manufacturer’s instructions.
WARNING !
•Never operate the monitor when the cover is removed.
•Remove the monitor cover and battery only in area known as non-hazardous.
•Use only mPower’s lithium battery part number M500-0038-000 (3.6 V, 1650 mAh, 2/3 AA
size). or part No. ER14335 cell manufactured by EVE Energy Co., LTD
•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 confirm the instrument is
functioning properly before use.
•Before use, ensure that the colorless ESD layer on the display is not damaged or peeling. (The
blue protective film used for shipment may be removed.)
AVERTISSEMENT !
•N'utilisez jamais le moniteur lorsque le couvercle est enlevé.
•Retirer le couvercle du moniteur et la batterie uniquement dans une zone connue comme non
dangereuse.
•Utilisez uniquement la batterie au lithium de mPower, pièce No. M500-0038-000 (3.6V, 1650
mAH, taille 2/3 AA) ou celle de EVE Énergie Cie., Lté, pièce No. ER14335.
•Cet instrument n'a pas été testé dans une atmosphère explosive gaz / air ayant une concentration
en oxygène supérieure à 21%.
•La substitution de composants compromettra l'aptitude à la sécurité intrinsèque.
•La substitution des composants annulera la garantie.
•Il est recommandé de tester avec un gaz de concentration connu pour confirmer que l'instrument f
onctionne correctement avant de l'utiliser.
•Avant l'utilisation, assurez-vous que la couche ESD incolore de l'écran n'est pas endommagée
ou épluchée. (Le film protecteur bleu peut être enlevé.)
Proper Product Disposal at The End Of Life
The Waste Electrical and Electronic Equipment (WEEE) directive (2002/96/EC) is
intended to promote recycling of 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.
Specific 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. General Information
The UNI Lite (MP110) is a low-cost, single-sensor, portable, personal monitor for CO or H2S gas.
It displays gas concentration continuously on a big segment LCD. It also monitors the STEL,
TWA, and Peak values, and these can be displayed on demand. High, Low, STEL and TWA
alarm thresholds are configurable. The shell is made of high strength, durable material. The one-
key operation is simple to use. Sensor and battery can be replaced easily. Calibration is also very
convenient.
2. User Interface

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3. Display
1. Gas name, CO or H2S
2. Question mark (to confirm action)
3. Unit status indicator “OK”and to confirm entry
4. Gas unit, includes: x10-6, ppm, mg/m3, µmol/mol
5. Battery charge status
6. HIGH, LOW, STEL, TWA alarm indicator (when flashing)
7. Span calibration (in process or due)
8. Zero calibration (in process or due)
9. Concentration reading or other parameter

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4. Operation
4.1 Turning the Unit On and Off
To turn on, press and hold the Key for 3 seconds, until the red light, buzzer, and vibrator all
trigger, and the LCD displays “On”. To turn off, press and hold the Key from normal display
mode for a 3-second count-down, until the unit displays “Off”.
After powering on, the unit shows the firmware version and enters Normal User
Mode.
•If the sensor cannot be identified, the screen alternately displays and .
•If the Bump or Cal Due setting is enabled (requires a CaliCase docking station) and the
due date has passed, the display will alternate between or and .
The Key must be pressed to acknowledge, otherwise the instrument will turn itself off
automatically after 30s. Enter Configuration Mode or use a CaliCase (see below) to
perform bump or calibration. If the battery has been removed or replaced, be sure to use
mPower Suite to reset the instrument clock before bump or calibration.
4.2 Normal User Mode
4.2.1 Real Time Readings
In Normal Mode the MP110 displays instantaneous gas concentrations and the
unit alarms if a pre-set limit is exceeded. Long-press the key to test the alarms
or short press the Key to cycle through values of STEL, TWA, and Peak, and view the Event Log.
The display returns to real time readings from any screen if there is no key action for 60 seconds.
4.2.2 Alarm Test
From Normal User Mode, the user can check the function of the buzzer, LED and vibration
alarms by pressing and holding the Key until the unit beeps.
4.2.3 STEL
This displays the Short Term Exposure Limit (STEL) calculation, which is the
average concentration in a moving window over the previous 15 minutes. The
STEL value rises and falls with some lag time over the instantaneous reading.
A STEL alarm cannot be cleared except by turning the unit off and back on, but will clear
automatically after 15 minutes in clean air.

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4.2.4 TWA
This displays the Time-Weighted Average (TWA) calculation, which is the
average concentration times the fraction of 8 hours that the instrument has
been on. The TWA value is similar to a dose in that it rises but never falls,
until it is reset by turning the unit off. Likewise, a TWA alarm cannot be
cleared except by turning the unit off and back on.
NOTE: If the unit is left running for several days, it may go into TWA alarm even though the
instantaneous concentration never exceeds the TWA alarm level, because the TWA value keeps
accumulating even after a regular 8-hour working day.
4.2.5 Peak
The Peak screen shows the highest value since the unit was
turned on.
Long-press the Key to enter the Clear Peak screen and
long-press again to acknowledge and clear the Peak value.
4.2.6 Alarm Log
Up to 50 alarm events lasting ≥5 seconds are logged into
memory and the last 10 such events can be viewed on the
instrument. From the EVT LOG screen, long-press to
display A 1 alternately with the alarm concentration and
type. Values preceded by a “--”with no alarm label indicate a negative concentration alarm
event. Short-press to cycle through the 10 available alarms. To view all 50 alarm events along
with date and time stamps, it is necessary to use a CaliCase connected to a computer with
mPower Suite software (check availability).
4.3 Configuration Mode
In Configuration Mode, the user can access the following menus:
AIR (Zero) Calibration
SPAN Calibration
SET High Alarm
SET Low Alarm
SET STELAlarm
SET TWAAlarm
SET Span Gas Concentration
Set Unit of Gas Concentration

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In general, long-press the Key to enter the menu item and short-press to scroll to the next menu
item or confirm an operation. To enter numbers or password, short-press to increase a number
and long-press until the beep to move the cursor to the next digit. After all digits are entered,
long-press to move to “OK?” and short-press to accept and save the value.
4.3.1 Entering and Exiting Configuration Mode
With the unit off, double-click the Key. While the unit shows “PROG”, short-press the Key to
prompt password entry with the first digit flashing. Short-press the Key to increase the number,
and long-press until the beep to move the cursor to the next digit. The default password is 0000.
After all four digits are entered, long-press to move to “OK” and short-press to accept and enter
Configuration Mode..
NOTE: The MP110 default password is 0000.
To exit Configuration Mode, short-press repeatedly until is displayed, and long-press to
return to Normal Mode. Alternatively, just wait for one minute and the unit will automatically
revert to Normal Mode. To re-enter Configuration Mode it is necessary to turn the unit off,
double-click, and re-enter the password.
4.4 Sensor Calibration and Bump Test
Before the unit can monitor gas correctly, it needs to be calibrated using zero and span gas.
Calibration and Bump Tests are recorded in the instrument datalog for compliance purposes. It is
recommended that the unit be calibrated every 3 to 6 months or according to the user’s company
policy. See TA Note 3 on the mPower website (www.mpowerinc.com) for more details on
calibration frequency.
4.4.1 Zero (Fresh Air) Calibration
Zero calibration sets the baseline for the sensor. It is preferably done in fresh air at the same
ambient temperature and humidity as will be used for measurements. However, nitrogen, dry
cylinder air, or other gas source known to be free of detectable compounds can also be used.
From the menu, long-press to start a zero calibration. The unit displays a 15-second
count-down followed by the calibration result as either or .The user can abort
the zero calibration during the count-down by long-pressing, after which is displayed.
4.4.2 Span Calibration
Span calibration determines the sensitivity of the sensor to the gas. Default calibration
concentrations are 25 ppm for H2S and 100 ppm for CO. We recommend using a fixed flow
regulator of preferably 0.3 LPM, but no more than 0.5 LPM. Use as short tubing connections as
possible.

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Span Calibration Procedure
1. Connect the Calibration Adapter to the span gas cylinder’s regulator and snap it into place
over the UNI Lite sensor.
2. Check that the SET Cal value (see below) is the same concentration as on the gas cylinder and
adjust if they do not match.
3. Enter the menu, start the gas flow, and long-press to start the calibration count-down.
The calibration time is typically 70 seconds but may be shorter or longer depending on the
sensor type.
4. To abort the span calibration during count-down, long-press and is displayed.
5. After count-down, the span calibration result or is displayed.
6. Turn off the gas supply and remove the Calibration Adapter.
CAUTION
During normal monitoring, never operate the MP110 with the Calibration Adaptor attached
because it will block diffusion of gas into the sensor.
4.4.3 Bump Test
A Bump Test is a quick check that the sensor and alarms are functioning, without performing a
full calibration. Bump testing requires a CaliCase Docking Station.
This feature is currently under development. Check for updates of this manual on the mPower
website when the UNI Lite CaliCase becomes available.

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4.5 Setting Instrument Configurations
4.5.1 Alarm Limits
MP110 toxic gas monitors alarm with 2 beeps & flashes per second when concentrations are over
the Low Alarm setpoint, and 3 beeps & flashes per second when over the High Alarm setpoint.
All the preset alarm limits, HIGH, LOW, STEL & TWA can be changed. From these menus
, , , and , long-press the Key to
enter the corresponding alarm limit menu, and adjust it using the same process as for entering a
password (Section 4.4.1):
The current setting value is displayed, with the first digit flashing:
Short-press to increase the current digit, cycling from 0 to 9:
Long-press to move the cursor to the next digit:
After all digits are entered, long-press to move to the “OK” symbol, and
short-press to save the entry. The unit will display SAVE for a few seconds
while storing the value; it is not necessary to press OK to initiate saving.
NOTE 1: The MP110 will show an error message “FAIL”if:
•The Low alarm is attempted to be set higher than the high alarm
setting.
•The High alarm is attempted to be set lower than the low alarm setting.
•The entered value is outside the measuring range.
4.5.2 Span Value
The span gas concentration can be changed from the SET Cal menu using
the same process as for setting alarm limits.
NOTE: The MP110 will show an error message “FAIL”if the Span setting
is less than 5% of the measuring range or greater than the measuring range.
4.5.3 Bump/Cal Intervals
The Bump and Cal Interval shows the number of days between required bump or calibration.
This feature is currently under development. Check for updates of this manual on the mPower
website when the UNI Lite CaliCase becomes available.

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4.5.4 Gas Concentration Unit
The gas concentration unit menu displays with the question mark “?”flashing Long-
press the Key to enter the gas unit sub-menu, showing the currently selected unit blinking. Unit
options include x10-6, ppm, mg/m3and µmol/mol for toxic gas sensors. Short-press to scroll
through the unit list and select, and long-press to save and exit.
5. Computer Interface
Computer interface requires a UNI Lite CaliCase Docking Station connected to a PC fitted with
mPower Suite software. mPower Suite can be used to 1) download logged alarm and calibration
events, 2) print calibration certificates, 3) upload configuration parameters to the instrument and
4) upgrade the instrument firmware. mPower Suite and instrument firmware can be downloaded
from the website at https://www.mpowerinc.com/software-downloads/ .
These features are currently under development. Check for updates of this manual on the
mPower website when the UNI Lite CaliCase becomes available.
6. CaliCase Docking Station (MP311)Calibrations
6.1 4-Bay CaliCase Set-up
Before a docking station can be used for calibrations, it must be set up for the desired gas type
and span concentration.
1. Connect the USB cable to both the docking station and the PC.
WARNING! Connect only in non-hazardous environments!
These features are currently under development. Check for updates of this manual on the
mPower website when the UNI Lite CaliCase becomes available.

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7. Maintenance and Specifications
CAUTION!
Maintenance should be performed only by a qualified person who has proper training and fully
understands the contents of the manual.
7.1 Battery Replacement
The battery typically lasts 2 years but may be drained faster if the unit has
frequently gone into alarm. When the charge is low, the unit displays a red
battery icon and a battery low alarm is triggered once per minute. When the
battery is dead, is displayed and the battery dead alarm triggers
every second. The battery needs to be replaced, as follows:
1）Turn off the MP110 and place it face down on a soft surface.
2）Use a Phillips head screwdriver to loosen each of the four screws.
3）Remove the top cover after carefully unplugging the buzzer connector.
4）Slide the battery out of its compartment.
5）Place the new battery into the compartment with its “+” end oriented toward the “+” on the
printed circuit board.
6）Plug in the buzzer connector and reinstall the top cover.
7）Re-install the screws through the back cover. Be careful to not overtighten the screws.

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WARNING !
•Never operate the monitor when the cover is removed.
•Remove the monitor cover and battery only in area known as non-hazardous.
•Use only mPower’s lithium battery part number M500-0038-000 (3.6 V, 1650 mAh, 2/3 AA
size). or part No. ER14335 cell manufactured by EVE Energy Co., LTD.
AVERTISSEMENT !
•N'utilisez jamais le moniteur lorsque le couvercle est enlevé.
•Retirer le couvercle du moniteur et la batterie uniquement dans une zone connue comme non
dangereuse.
•Utilisez uniquement la batterie au lithium de mPower, pièce No. M500-0038-000 (3.6V, 1650
mAH, taille 2/3 AA) ou celle de EVE Énergie Cie., Lté, pièce No. ER14335.
7.2 Sensor Filter Replacement
The sensor gas inlet should be cleaned regularly (purged with compressed air) to avoid dust and
other impurities blocking the air access and reducing the sensitivity of the detector. If this does
not help, replace the internal filter whenever it appears dirty, is clogged with particles, has
contacted liquid, or when sensor response becomes weak and/or slow.
1) Turn off the MP100 and remove the top cover as described above for battery replacement.
2) Peel off the old filter, and gently press a new filter onto the sensor.
3) Reconnect the buzzer and reinstall the top cover as described above for battery replacement.
Be careful to not overtighten the screws.
7.3 Sensor Replacement
MP110 models are designed for easy sensor replacement. CO and H2S sensors have typical
operating lives of a few years.
1) Turn off the MP110 and remove the top cover as described above for battery replacement.
2) Replace the old sensor with a new one. Make sure the pins are not bent or corroded. Align the
pins to the corresponding holes and push the sensor straight in. The sensor should fit flush
against the printed circuit board.
3) Check the instrument filter and, if needed, replace as described in the previous section.
4) Reconnect the buzzer and reinstall the top cover as described above for battery replacement.
Be careful to not overtighten the screws.
CAUTION!
Sensors are not interchangeable. Use only mPower sensors and use only the sensor type
specified for your MP100 monitor. Use of non-mPower components will void the warranty and
can compromise the safe performance of this product.

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7.4 Troubleshooting
Problem
Possible Reason
Solution
Cannot turn on unit
Battery not installed
Install battery.
Depleted or defective battery.
Replace battery.
Unit shows “Cal Due”or
“Bump Due”and shuts
off after 30 seconds
Calibration or bump due date passed
Press Left key to prevent shut off. Access
program menu and perform bump or calibration.
Or use mPower Suite to update to later Cal or
Bump Due date. If battery has been replaced, re-
set clock in Suite before calibration.
Reading abnormally low
(or Fails Calibration)
Incorrect calibration or zeroed when
detectable gas is present.
Zero and Span calibrate. Ensure clean air when
zeroing.
Calibration gas flow > 0.6 LPM
Use flow between 0.3 and 0.6 LPM
On-board filter plugged.
Replace filter. Use external filter clip in dusty
environments.
Weak sensor.
Have Service Technician check raw counts and
replace sensor as needed.
Calibration Adapter is attached.
Remove Calibration Adapter.
Reading abnormally
high
(or Fails Calibration)
Incorrect calibration or degraded
span gas used or tubing absorbs span
gas
Zero and Span calibrate instrument. Ensure span
gas is not expired.
Used short, inert (PTFE) tubing
Calibration gas flow < 0.3 LPM
Use flow between 0.3 and 0.6 LPM
Environment contains cross-
sensitive substances
Check TA Note 4 for possible cross-sensitivities.
Reading abnormally
noisy
(or Fails Calibration)
Incorrect calibration or degraded
span gas used or tubing absorbs span
gas
Zero and Span calibrate instrument. Ensure span
gas is not expired.
Used short, inert (PTFE) tubing
Weak sensor.
Have Service Technician check raw counts and
replace sensor as needed.
Buzzer, LED, or
vibration alarm
inoperative
Bad buzzer, LEDs, or vibration
alarm.
Call authorized service center.
Blocked alarm port
Unblock alarm port.
TWA alarm despite low
readings for last 8 hours
Unit has been left on for >8 hours,
(TWA value continues to accumulate)
Turn unit off and back on to re-set TWA.

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7.5 Alarm Signal Summary
Display
Reason
Over Range alarm：
Buzzer 3 beeps per second
LED 3 flashes per second
1 Vibration per second
“OVER” and “500” (“sensor range”) 1 flash
per second
High alarm：
Buzzer 3 beeps per second
LED 3 flashes per second
1 Vibration per second
“HIGH” 2 flashes per second
Low alarm：
Buzzer 2 beeps per second
LED 2 flashes per second
1 Vibration per second
“LOW” 2 flashes per second
STEL alarm：
Buzzer 1 beeps per second
LED 1 flash per second
1 Vibration per second
“STEL” 2 flashes per second
TWA alarm：
Buzzer 1 beep per second
LED 1 flash per second
1 Vibration per second
“TWA” 2 flashes per second

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Bump Overdue alarm:
Buzzer 1 beep per minute
LED 1 flash per minute
1 Vibration per minute
Cal Overdue alarm:
Buzzer 1 beep per minute
LED 1 flash per minute
1 Vibration per minute
Battery Low alarm：
Buzzer 1 beep per second
LED 1 flash per second
“bAT LoW”1 flash per second
Battery Empty alarm：
Buzzer 1 beep per minute
LED 1 flash per minute
1 Vibration per minute
1 flash per minute
Sensor Error alarm：
Buzzer 1 beep per second
LED 1 flash per second
“SEN Err”1 flash per second

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7.6 Instrument Specifications

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Technical Support and mPower Contacts
mPower Electronics Inc.
2910 Scott Blvd. Santa Clara, CA 95054
Phone: [phone]
Fax: [phone]
[e-mail]
www.mpowerinc.com