UNI MP100 Single Gas Detectors User Guide

Single-Gas Detectors
MP100
User’s Guide

Rev. 1.21
August 2024

MP100 Single Gas Detectors

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 m Power’s lithium battery part number M500-0001-000 [1.17.02.0002] (3.6V, 2700mAH, AA size) or part No. ER14505 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.)

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.

General Information

The UNI (MP100) is a single sensor, portable, personal toxic gas monitor. It displays gas concentration continuously on a big segment LCD. It also monitors the STEL, TWA, Peak and
Minimum (for O2 only) 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 two-key operation is simple to use. Sensor and battery can be replaced easily. Calibration is also very convenient.

User Interface

1. Audible Alarm Port
2. LED alarm window
3. LCD
4. Left Key (Confirm/Number increasing)| 5. Right Key (Power On-Off/ Cursor moving)
6. Alligator clip
7. Sensor Gas Inlet
8. Vibrator
---|---

Display

1. Gas name, if CO, H2S, or O2 (others on label on back side)
2. Question mark (to confirm action)
3. Unit status indicator “OK” and to confirm entry
4. Gas unit, includes: x10 , 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

Operation

4.1 Turning the Unit On and Off
Press and hold the Right Key for 3 seconds, until the red light, buzzer, and vibrator all trigger, followed by the green light, and the LCD displays “On”. To turn off, press and hold the Right Key from normal display mode for a 5-second count-down, until the unit displays “Off”.

4.2 Warm-up Sequence
After powering on, the unit enters a warm up and self-test sequence, shows the firmware version as follows:

• If the sensor cannot be identified or is not installed, the screen alternately displays and .
• If the Bump or Cal Due setting is enabled and the due date has passed, the display will alternate between or and . The Left Key must be pressed to acknowledge, otherwise the instrument will turn itself off automatically after 30s. Enter Configuration Mode (see below) to perform bump or calibration. If the battery has been removed or replaced, be sure to use mPower uite to reset the instrument clock before bump or calibration.

Lastly, the following values will be shown accordingly:

• High alarm threshold
• Low alarm threshold
• STEL (short-term exposure limit) alarm threshold
• TWA (8-hour time-weighted average) alarm threshold

4.3 Normal User Mode
4.3.1 Real Time Readings
When warm-up is complete, the unit enters normal mode and starts displaying instantaneous gas concentrations.
By pressing the Right Key the user can check other values including STEL,TWA, PEAK, MIN (for O2 only) and Alarm Log. The display returns to real time readings from any other screen if there is no key action for 60 seconds.

4.3.2 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.

4.3.3 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.

4.3.4 Peak
The Peak screen shows the highest value since the unit was turned on.
Press the Left Key to enter the Clear Peak screen and Press the Left Key again to acknowledge and clear the Peak value.

4.3.5 Minimum (Oxygen Sensor Only)
The Minimum screen is used for the oxygen sensor only and shows the lowest value since the unit was turned on.
Press the Left Key to enter the Clear Min screen and Press the Left Key again to acknowledge and clear the Min value.

4.3.6 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. When A 1 is reached using the Right Key, it flashes between the A 1 screen and a screen showing the alarm concentration and type. Values preceded by a “–” with no alarm label indicate a negative concentration alarm event. Use the Left Key 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 Docking Box or CaliCase connected to a computer with mPower Suite software.

4.3.7 Backlighting
Holding down the Left Key for a few seconds causes the red alarm LEDs seconds. This helps the user read the display when in darkness.

4.4 Configuration Mode
In Config mode, the user can change parameters and calibrate the unit. In general, use the Left Key to increase the number or confirm an operation, and use the Right Key to move the cursor or go to the next menu item.

4.4.1 Entering and Exiting Config Mode
Press and hold the Left Key and the Right Key together for 3 seconds until the password screen is displayed, followed by , with one digit or cursor flashing, to prompt the user to enter the password. The default password is 0000. Use the Left Key to increase the number, and the Right Key to move the cursor, and the Left “OK” Key again to accept the password input and enter Config mode. If the digit input is incorrect, use the Right Key to move the cursor and Left Key to change the input.
NOTE: The MP100 default password is 0000.
To exit Config Mode, press the Right Key until is displayed, and acknowledge with the Left Key to return to Normal Mode. Alternatively, just wait for one minute and the unit will automatically revert to Normal Mode.

4.5 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.

4.5.1 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. One exception is that for an oxygen (O2) sensor the Fresh Air Calibration sets the value to 20.9%, so air must be used.
From the menu, press the Left Key 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 pressing the Right Key, after which is displayed.

4.5.2 Span Calibration
Span calibration determines the sensitivity of the sensor to the gas. Recommended calibration gases and concentrations are listed in Section 7.6 at the end of this manual and in TA Note 4 (available at www.mpowerinc.com). Special calibration procedures for highly reactive or difficult gases, including HCl, HF, ClO2, O3, AsH3, phosgene and formaldehyde are described in TA Note 6. Oxygen sensor calibration is reversed from other sensors and uses pure nitrogen with 0% oxygen during the span procedure and 20.9% oxygen (air) during the fresh air “zero” procedure. We recommend using a fixed flow regulator of at least 0.3 LPM but no more than 0.6 LPM. Use as short tubing connections as possible.

Span Calibration Procedure

1. Ensure that the gas setting in the SET Cal menu matches the actual cylinder concentration.

2. Connect the Calibration Adapter to the span gas cylinder’s regulator and snap it into place over the UNI sensor.

3. Enter the menu, start the gas flow, and press the Left Key to start the calibration count-down. The calibration time is typically 60 seconds but may be shorter or longer depending on the sensor type.

4. To abort the span calibration during count-down, press the Right Key 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 MP100 with the Calibration Adaptor attached because it will block diffusion of gas into the sensor.

4.5.3 Bump Test
A Bump Test is a quick check to ensure that the sensor and alarms are working properly. It is done with the same gas as is used for span calibration. Enter the menu, start the gas flow, then press the Left Key to start bump count-down (typically 45 seconds, but varies with sensor). After count-down, the bump test result or is displayed.
To abort the bump test during count-down, press the Right Key and is displayed.
Although a Bump Test is a recorded event in the datalog, the user can always do an unrecorded bump check such as by breathing into an oxygen monitor just to verify that the sensor and alarms are functioning.

4.6 Setting Instrument Configurations
4.6.1 Alarm Limits
MP100 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. See Section 7.5 for a summary of alarm signals and Section 4.6.2 for Oxygen Monitor alarms.
All the preset alarm limits, HIGH, LOW, STEL & TWA can be changed. From these menus , and , press the Left Key to change the corresponding alarm limit, using the same process as for entering a password (Section 4.4.1):
The current setting value is displayed, with the first digit flashing:
Use the Left Key to increase the current digit, cycling from 0 to 9:
Use the Right Key to move the cursor to the next digit:
After all digits are entered, use the Right Key to move to the “OK” symbol, and press the Left Key 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.
Silence Mode can be entered using mPower Suite (Section 5). In this mode, the audio alarm is disabled when exceeding the Low Alarm, with no change to the visual and vibration alarms. The audio alarm is still enabled when exceeding High, STEL, TWA or Overrange Alarm conditions.
NOTE 1: The MP100 will show an error message “Err” 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.

4.6.2 Oxygen Monitors
Standard Oxygen Monitors: Oxygen monitor alarms function differently than toxic gas monitor alarms in that the normal ambient air reading is 20.9% and an alarm is triggered when
the reading goes BELOW the Low alarm setpoint or ABOVE the High Alarm setpoint. Oxygen monitors do not have STEL or TWA alarms.
Inert Oxygen Monitors: Oxygen monitors programmed for inert gas applications do not alarm when the O2 concentrations are below the Low Alarm setpoint or above 19.5%. They give a Low Alarm (2 beeps/sec) when between the Low and High Alarm setpoints and a High Alarm (3 beeps/sec) when between the High Alarm setpoint and 19.5%. The default Low and High alarm setpoints are 4% and 5%, respectively, but can be adjusted, while the 19.5% limit is fixed. Thus, this version is useful both for oxygen deficiency monitoring in normal ambient air when users do not wear a breathing apparatus, and in inert gas environments, where breathing apparati are required, to warn of high oxygen levels that may allow explosion to occur.

4.6.3 Span Value
The span gas concentration can be changed from the Cal SET menu using the same process as for setting alarm limits.
NOTE: The MP100 will show an error message “Err” if:

• The Span setting is less than 5% of the measuring range or greater than the measuring range.
• For the Oxygen sensor, the span setting is greater than 19.0%.

4.6.4 Bump/Cal Intervals
The Bump and Cal Interval shows the number of days between required bump or calibration. The LCD alternates between: and , or and . Press the Left Key to enter the menu and change the interval using the same process as for setting alarm limits. The values must be between 0 and180 days with 0000 meaning Bump or Cal notifications are turned off. If the time has exceeded the interval, the unit will not operate until the bump or cal has been done.

4.6.5 Gas Concentration Unit
The gas concentration unit menu alternates between and . Press the Left Key to enter the gas unit sub-menu, showing the currently selected unit blinking. Unit options include x10 -6 , ppm, mg/m 3 and µmol/mol for toxic gas sensors, and % for oxygen. Use the Right Key to scroll through the unit list and select, and the Left Key to confirm and exit.

4.6.6 Vibrator Enable/Disable
The vibrator consumes a lot of power and can be disabled to extend the battery life. The Vibrator menu alternates between and . Press the Left Key to change the vibrator enable/disable status. The current vibrator status is displayed, alternating between and if enabled, or between and , if disabled. Use the Right Key to change the status, and use the Left Key to confirm and exit.

4.6.7 Power-on Zero Enable/Disable
The sensor baseline may shift due to changes in environment conditions, such as temperature or humidity, and require a zero calibration. The MP100 can prompt the user to zero calibrate every time the unit is powered on, and this feature can be enabled/disabled.
The Power-on Zero menu alternates between and . Press the Left Key to change the power-on zero enable/disable status. The current status is displayed, alternating between and if enabled, or between and  if disabled. Use the Right Key to change the status, and the Left Key to confirm and exit. When the unit is re-started and user is prompted with to zero, it must be initiated within 30 s or else the zeroing is skipped.

4.6.8 Fast Power-on Enable/Disable
If fast startup is enabled, the screens showing HIGH/LOW/STEL/TWA alarm threshold values will be skipped during warm up sequence. On start-up, the unit shows the firmware version number and then goes directly to concentration readings.
The fast power-on menu alternates between and . Press the Left Key to change the fast startup enable/disable status. Enable or disable Fast Power-on and confirm the status using the same process as for Vibration Alarm or Power-on Zero enable/disable.

4.6.9 Configuration Reset
If some unit parameters are incorrect and the user has difficulty correcting them, this menu can be used to set the all the configuration parameters back to the factory default condition. From the alternating and display, press the Left Key to enter the (reset) menu. Then press the Left Key to confirm or the Right Key to abort the reset.

Computer Interface

Computer interface requires a UNI IR Reader, Single Docking Box or 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/ .

1. Connect the USB cable to both the PC and the IR Reader or Docking Box.
   WARNING! Connect only in non-hazardous environments!

2. Turn on the instrument and attach the IR Reader or insert it face down into the Docking Box.

3. Start mPower Suite on the PC and click the “Search” button on the bottom panel.

4. Find the instrument in the left bar Device Connected list. Click on the S/N to get the configuration file from the instrument.

5. Edit the configuration parameters as desired and click “Write” to upload the configuration to the instrument.

6. “Read” downloads the current configuration file from the instrument.

7. “Save” stores the current configuration file to the PC.

8. “Load” calls up a stored configuration file from the PC to mPower Suite.

9. To update the instrument firmware, select “Firmware Upgrade”. The firmware must first be downloaded to the PC from the mPower website www.mPowerinc.com.
   mPower Suite Screen

10. Alarm Events are shown in the bottom half panel and Bump/Calibrations times can be viewed by clicking on the corresponding tab.

11. To export data to a csv file readable by Excel or other spreadsheet software, move the cursor over the bottom data panel, right-click the mouse, and then select “Export Event Log”.

Bump/Calibration Results Recalled from UNI Instrument

Silence Mode: Enabling this mode prevents the audible alarm from sounding when the Low Alarm level has been exceeded. This mode is useful in preventing annoyance alarms or when surreptitious measurements are being made, such as by law enforcement. However, critical alarms will still sound, including exceeding the High Alarm, TWA Alarm or STEL Alarm levels.
Diagnostic Mode: This mode is useful in evaluating sensor strength but is accessible only using a special service tool available to authorized Service Centers. Please inquire with mPower to gain access to the distributor Service Portal if you are qualified. Note that a Docking Box is required for this tool because the simple IR Reader is not supported by the software.

Docking Station (MP100T & MP300T1) Calibrations

NOTE: The MP300T1 is being replaced by the MP310 CaliCase. The MP300T1 instructions are included here for legacy users. For MP310 operations see the separate MP310 User Guide. The MP100 IR Reader (M001-0100-000) can be used for configurations and data downloads but not for calibrations or bump testing.

6.1 Docking Box (MP100T) or 4-Bay CaliCase (MP300T1) Set-up
Before a docking station can be used for calibrations, it must be set up for the desired gas type and span concentration. The same set-up procedures apply to both single-bay and 4-bay stations.

1. Connect the USB cable to both the docking station and the PC.
   WARNING! Connect only in non-hazardous environments!

2. Start mPower Suite on the PC and click the “Search” button on the bottom panel.

3. Find the docking station (Docking Box or CaliCase) in the left panel Device Connected list and click on it to get the docking station configuration page.

4. Select the Gas Name from the pull-down menu and edit the cylinder gas concentration, lot number and expiration date. A gas mixture can be entered if the docking station is alternately used for UNIs with different sensor chemical types. For multiple gases, right click on the gas name field and select “Add gas” or “Delete gas”. During calibration or bump, the docking station will select the gas corresponding to the type of UNI in the cradle. Be sure one of the gas types matches the type of UNI to be calibrated.

5. Click “Write” to upload the configuration to the docking station. As a reminder, attach a label to the front panel indicating the gas type. Labels for CO and H2S are provided.

6. Calibrations or bump tests will not be allowed after the cylinder expiration date entered.

7. Hibernate Timeout is the number of seconds of inaction before the docking station turns itself off automatically. Press the Cal/ ****button to turn back on.

8. “Save” stores the current docking station configuration file to the PC.

9. “Load” calls up a stored docking station configuration file from the PC to mPower Suite.

10. To update the docking station firmware, select “Firmware Upgrade”. The MP100T firmware must first be downloaded to the PC from the mPower website www.mPowerinc.com.

6.2 Single Docking Box Gas Connection and Calibration

1. Connect gas and regulator to the quick-connect in the Cal gas inlet port of the Docking Box using 6-mm or ¼-inch o.d. tubing
2. If ambient air is not free of detectable compounds, connect the air inlet to a fresh air source.
3. If desired, connect tubing to the gas outlet to exhaust away from the operator breathing area.
   Docking Box Components| 1. USB Port
   2. Monitor cradle
   3. Unit LED
   4. Status LED
   5. Cal button (Calibrates sensor)
   6. Bump button (Briefly applies gas to test sensor function)
   7. Air inlet
   8. Cal gas inlet
   9. Gas Outlet| Calibration Gas Connections
   ---|---|---
4. Place the UNI instrument face-down into the cradle.
5. If the Status LED [4] is off, press Cal/ ****[5] until the LED turns green.
6. Push Cal [5] to initiate calibration or Bump [6] to run a bump test. The LED should blink green for about 100 s during calibration or 25 s during a bump test.
7. If the calibration or bump is successful, the Unit LED [3] will be green, otherwise red.
8. Up to 2000 Cal or Bump reports will be saved in the internal storage of the Docking Box.
9. To power off, hold the Cal button until the status LED turns off.

Summary of Visual and Audio Alarm Indications

Unit LED
[3]| Green blinking| None| Cal/bump testing
Green| Beep Once| Cal/bump test pass
Orange| None| Sensor type mismatch
Red| 3 beeps per sec| Cal/bump test fail
Status LED
[4]| Green| None| Power On
Green blinking| None| Low battery
Orange| None| Charging
Red blinking| None| Pump block

6.3 MP300T1 4-Bay CaliCase Gas Connection and Calibration
NOTE: As indicated above, the MP300T1 is being replaced by the MP310 CaliCase. The MP300T1 instructions are included here for legacy users. For MP310 operations see the separate MP310 User Guide.

1. If needed, charge the CaliCase [12] using the 12V/2A power adapter.
2. Connect the case to a PC by USB cable [11] and use mPower Suite software to configure the gas concentration and other parameters. Be sure to set the sensor type to match the type being calibrated and the cylinder expiration date past the current date.
3. Thread the gas cylinder into the demand-flow regulator (DFR) [3] C10 inlet fitting and verify that the gauge shows pressure. Compatibility is all gases offered in UNI sensors except for ozone, chlorine dioxide, hydrogen chloride, hydrogen fluoride, and chlorine. *May calibrate with surrogate gas.
4. Ensure that clean air is available to the air inlet for zeroing. If needed, push 4-mm o.d. tubing into the air inlet using the beige quick-connects [9] and supply a clean air source. (To disconnect, push the quick-connect in towards the box and pull the tubing out.)
5. If desired, connect tubing to the gas outlet [10] to guide the exhaust away from the operator breathing area.
   | 1. Micro SD Card
   2. Cal Gas Cylinder
   3. Regulator (DFR)
   4. Monitor Cradles
   5. Unit LEDs
   6. Status LED
   7. CAL Button
   8. BUMP Button
   9. Air Inlet
   10. Cal Gas Outlet
   11. USB Port
   12. Charging Port
   ---|---
   Micro-USB card| Gas, power and communications connections
6. Insert the micro-USB card into the slot with contacts facing the back of the MP300T1 (the CaliCase will not operate without the micro-USB card inserted).
7. Place 1 to 4 UNI instruments face-down into their cradles.
8. If the Status LED [6] is off, press & hold Cal/ [7] until the LED turns green.
9. Push Cal [7] to initiate calibration or bump [8] to run a bump test. The Unit LEDs [5] should blink green during a calibration or bump test and stay green if passed or turn red if failed.
10. To abort an active calibration or bump, press Cal [7] until the action stops.
11. Up to 100,000 Cal or Bump reports will be saved in the internal storage of the Docking Box and transferred to the Micro-USB card anytime the CaliCase is turned on.
12. To power off, hold the Cal button [7] until the status LED [6] turns off.
    Summary of Visual and Audio Alarm Indications LED| Color| Description
    ---|---|---
    Unit LEDs
    [5]| Green blinking| Cal/bump testing in process
    Green| Cal/bump test pass
    Orange| Sensor type mismatch
    Red| Cal/bump test fail
    Status LED
    [6]| Green| Power On
    Green blinking| Low battery
    Orange| Charging
    Red blinking| Pump failure
    Micro SD card full or not detected
13. To Download data:
    • Upgrade the CaliCase to MP300T1 firmware v 5.1.1 or later
    • Remove the micro-USB TF card from the CaliCase and insert into the USB thumb drive. • Find the TF Card on mPower Suite & right click on data field to export to csv file
    • Or find the mPower thumb drive on the computer explorer to export as a text file

6.4 Docking Box Data Download and Calibration Certificates

1. To download Cal/Bump test reports, click the Download Log button on the bottom panel. It is not necessary to have a UNI in the Docking Box. View the reports under the Datalog tab.
   Bump/Calibration Results Recalled from UNI Docking Box

2. To export data to a csv file readable by Excel or other spreadsheet software, move the cursor over the right data panel and click the right mouse button, and then select either the current Cal/Bump result (Single Datalog) or all the stored results (Whole Datalog).

3. To print a Calibration Certificate, right-click the mouse in the right panel and select Generate Certificate. Enter any desired information such as operator name and cylinder lot number, and click Print at the bottom.

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 3 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 MP100 and place it face down on a soft surface.

2. Use a T10 Torx screwdriver to loosen each of the four screws by turning them counterclockwise.

3. Remove the top cover and optionally unplug 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 (if removed) and reinstall the top cover.

7. Re-install the screws through the back cover. Be careful to not overtighten the screws.

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 M500-0001-000 [1.17.02.0002] (3.6V, 2700mAH, AA size) or part No. ER14505 cell manufactured by EVE Energy Co., LTD.

7.2 Sensor Filter Replacement
An internal filter should be used on the MP100 in order to keep debris from fouling the sensor.
Replace the filter whenever it appears dirty, is clogged with particles, has contacted liquid, or when sensor response becomes weak and/or slow. Use external clip-on filters when operating in dusty environments for easier filter exchange (but note that these may cause slower response).

1. Turn off the MP100 and remove the top cover as described above for battery replacement.
2. Lift out the old filter, separate it from the filter gasket and insert a new filter into the gasket.
3. Re-insert the filter/gasket, reconnect the buzzer (if removed) and reinstall the top cover. Be careful to not overtighten the screws.

7.3 Sensor Replacement
MP100 is designed for easy sensor replacement. CO and H2S sensors have typical operating lives of 5 years, while others are 1 to 2 years, as per warranty (See Specifications in Section 7.8).

1. Turn off the MP100 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.

7.4 Troubleshooting

menu and perform bump or calibration. Or use mPower Suite to update to later Cal or Bump Due date. If battery has been replaced, reset 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 alann port.
Negative drift —0 alarm| Significant temperature or humidity change (for some sensors)| Allow several minutes to acclimate to local conditions and then re- zero (no need to re-span)
TWA alann 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.

7.5 Alarm Signal Summary

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
| Negative Drift alarm：
Buzzer 1 beep per second LED 1 flash per second
1 Vibration per second
| 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

7.6 Sensor Specifications and Default Configurations

Sensor| Range
(ppm)| Resolution
(ppm)| Span*
(ppm)| Low
(ppm)| High
(ppm)| STEL
(ppm)| TWA
(ppm)| Panel
Rine| Response
Time t90 (s)| Calibration
Intervals
---|---|---|---|---|---|---|---|---|---|---
CO| 0-500| 1.00| 100.00| 35.00| 200.00| 100.00| 35.00| | 15.00| 3 mo
0-1000| 1| 100.00| 35.00| 200.00| 100.00| 35.00| | 15.00| 3 mo
0-1999| 1| 100.00| 35.00| 200.00| 100.00| 35.00| | 15.00| 3 mo
H2S| 0-50| 0.10| 25.00| 10.00| 20.00| 15.00| 10.00| | 15.00| 3 mo
0-100| 0.10| 25.00| 10.00| 20.00| 15.00| 10.00| | 15.00| 3 mo
0-200| 0.10| 25.00| 10.00| 20.00| 15.00| 10.00| | 15.00| 3 mo
0-1000| 1| 25.00| 10.00| 20.00| 15.00| 10.00| | 30.00| 3 mo
NH3| 0-100| 1| 50.00| 25.00| 50.00| 35.00| 25.00| | 150.00| 1 mo
0-500| 1| 50.00| 25.00| 50.00| 35.00| 25.00| | 150.00| 1 mo
C12| 0-50| 0.1| 10.00| 2.00| 5.00| 1.00| 0.50| | 30.00| 1 mo
C102| 0-1| 0.01| 0.5| 0.20| 0.50| 0.30| 0.10| | 120.00| 1 mo
H2| 0-1000| 1| 100.00| 100.00| 400.00| 400.00| 100.00| | 70.00| 1 mo
0-2000| 1| 100.00| 100.00| 400.00| 400.00| 100.00| | 70.00| 1 mo
HCN| 0-100| 0.10| 10.00| 4.70| 5.00| 4.70| 4.70| | 120.00| 3 mo
NO| 0-250| 1.00| 25.00| 25.00| 50.00| 25.00| 25.00| | 30.00| 1 mo
NO2| 0-20| 0.10| 5.00| 1.00| 10.00| 1.00| 1.00| | 30.00| 1 mo
PH3| 0-20| 0.01| 5.00| 1.00| 2.00| 1.00| 0.30| | 60.00| 1 mo
SO2| 0-20| 0.10| 5.00| 2.00| 10.00| 5.00| 2.00| | 15.00| 3 mo
ETO| 0-200| 0.10| 10.00| 2.00| 5.00| 2.00| 1.00| | 120.00| 1 mo
O3| 0-5| 0.01| 0.5| 0.20| 0.30| 0.10| 0.10| | 60.00| 1 mo
HF| 0-20| 0.10| 6| 2.00| 6.00| 6.00| 3.00| | 90.00| Imo
HC1| 0-15| 0.10| 10| 2.00| 5.00| 5.00| 1.00| | 90.00| 1 mo
CH3 SH| 0-10| 0.10| 5.00| 2.00| 5.00| 2.00| 0.50| | 20.00| 3 mo
THT| 0-40| 0.10| 10.00| 5.00| 10.00| 5.00| 5.00| | 60.00| 1 mo

• The default span setting equals the recommended span gas concentration.
  ** Calibration of these sensors requires a gas generator or other special precautions. See TA Note 6 for recommended procedures and gas sources.
  † Suggested calibration interval. Actual required interval must be defined by user and may be shorter under harsh conditions or longer under favorable conditions – see TA Note 3 for details.

Sensor| Range
(%)| Resolution
(%)| **Span*
(%| Lowt
) (%| Hight
) (%)| STEL
(%)| TWA
(%)| Panel Ring| Response Time t9o (s)**
---|---|---|---|---|---|---|---|---|---
02 (Galvanic or
Lead-Free)| 0 – 25| 0.1| 0.0| 19.5| 23.5| –| –| Dark Blue| 15
0 – 30| 0.1| 0.0| 19.5| 23.5| –| –| 15
02 Inert Alarms †| 0 – 30| 0.1| 0.0| 4.0| 5.0| –| –| 15

• Oxygen sensors in MP100 use pure nitrogen or other inert gas for both Span and Bump Test.
  † Standard O2 alarms are triggered when O2 levels go either below the Low Alarm or above the High alarm. Inert monitor alarms are off below the Low alarm or above 19.5% and on above Low & High alarms but below 19.5%.

7.7 Instrument Specifications

Others vary, see individual sensor specification sheet or TA Note 4
Battery| Replaceable AA size Lithium battery, 3 years typical operation
Temperature| -4°F to 122°F (-20°C to 50°C)
Humidity| 5 to 95% relative humidity (non-condensing)
Alarm Type| • High, Low, STEL & TWA alarms adjustable
• Over range alarm
• Low battery alarm
Alarm Signal| • 95 dB @ 30 cm
• Bright red LEDs
• Built in vibrator
Calibration| 2-point calibration, zero and span, power on zero (user- selectable)
Event Log| Up to 50 alarm events
IP Ra t ing| IP-67
EMI/RFI| EMC directive: 2014/30/EU
Safety
Certifications| 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
Sensor Life| CO & H2S expected operating life 5 years or longer, others 1 to 2 years as
per warranty
Warranty| 2 years on O2, CO, H2S, SO2, HCN, NO, NO2, and PH3 units including
sensor; 1 year on others

Technical Support and mPower Contacts
mPower Electronics Inc.
2910 Scott Blvd. Santa Clara, CA 95054
Phone: 408-320-1266
Fax: 669-342-7077
info@mpowerinc.com
www.mpowerinc.com

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