mPower Electronics UNI321 RT Free Single Gas Detectors User Guide
- September 21, 2024
- mPower Electronics
Table of Contents
mPower Electronics UNI321 RT Free Single Gas Detectors
FAQs
Q: What should I do if the display is damaged or peeling?
A: Ensure that the blue protective film is removed. If the display is still damaged, contact mPower Electronics Inc. for assistance.
Read Before Operating
The User’s Guide 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.
User Interface
The UNI321 RT user interface consists of the LCD display, LEDs, an alarm buzzer, two keys: Left Key [Confirm/Number increasing] and Right Key [Power/Cursor moving], an alligator clip, and a sensor.
Warning
- Never operate the monitor when the cover is removed.
- Remove the monitor cover and battery only in areas known as non-hazardous.
- Use only mPower’s lithium battery part number M500-0001-000 [1.17.02.0002] (3.6 V, 2700 mAh, AA size).
- 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 and 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 may be removed.)
Turning the Unit On
- Press and hold the Right Key for 3 seconds, unit LCD displays “on”, the buzzer beeps, and the green LED is on. After powering on, the unit enters a warm-up and self-test sequence and then enters normal mode.
Display
- Gas name includes: CO, H2S, O2
- Remaining time unit: Months, Days, or Hours
- Question mark
- Unit status indicator “OK”
- Gas concentration unit
- Gas reading / Remaining operation time
- Low battery indicator
- Alarm type indicator
- Calibration indicator
Normal Mode
- In normal mode, the unit displays real-time readings. When the remaining lifetime is less than 90 days, the LCD switches to show the remaining time and then displays EOL at the end of life. In the case of a gas alarm, the alarm type is displayed: Low or High alarm. The user can check the PEAK value for toxic gas sensors (or PEAK/MIN values for O2) and the event logs by pressing the Right key. To clear the peak, press the Left key after PEAK and the peak value alternate, and 2 more times after CLR is shown.
Daily Self-Test
Press the Left Key once to trigger the red Alarm LEDs for the LCD backlight. Then press the Left Key again while the Alarm LEDs are on to do the Daily Self-Test. Confirm that the following tests are performed:
- a) LED flashes, Buzzer beeps, Vibrator is on
- b) All LCD segments are shown
- c) Remain lifetime is shown
- c) High and Low alarm settings are shown
- d) Days to Calibration over Due is shown
- f) Days to Bump over Due is shown
- g) Display returns to the normal mode
Bump Test
- A recorded Bump Test can only be done using an MP100T Docking Box or an MP300T1 CaliCase and mPower Suite software. Please refer to the MP100 user manual.
Enter Configuration Mode
- Press and hold the Left Key and the Right Key together for 3 seconds to enter Config Mode. The LCD displays “PWD” to prompt password entry. To input a password, use the Left Key to increase the number, and the Right Key to move the cursor. After all four digits are entered, the cursor will move to “OK”. Use the Left Key to exit password input and enter Config Mode. The default password is 0000. It can only be changed using an MP100T Docking Box or an MP300T1 CaliCase and mPower Suite software.
Exit Configuration Mode
- Press the Right Key to go through the menu items until the LCD displays “Exit?”, then press the left Key to exit back to Normal Mode.
Zero (Fresh Air) Calibration
- Zero calibration sets the baseline for the sensor and is done in fresh air or other clean air source. When the LCD displays “AiR”, press the Left Key to start zero calibration. When the 15-second count-down is finished, the zero calibration result “pass” or “fail” will be displayed. To abort zero calibration during the 15-second count-down, press the Right Key and the display acknowledges with “AbRt”
Span Calibration
Span calibration uses a known concentration gas to determine the response of the sensor to the gas.
- Attach the Calibration Adapter over the inlet port on the front of the unit by pressing it into place. Use a fixed-flow regulator with a flow rate of about 0.3 to 0.5 LPM. Higher flow rates can be used if necessary, but not lower. A flow rate of 0.3 LPM is preferred.
- Enter Config Mode and scroll to “SPAN?”
- Start the gas flow, and press the Left key to start the calibration countdown. The default count time is 60 seconds.
- When finished, a “pass” or “fail” result will be displayed. Turn off the gas supply, remove the calibration adapter, and exit to Normal Mode.
- To abort at any time during the count-down, press the Right Key, and “AbRT” is displayed.
Hibernation Mode
- Once the unit is turned on, it runs continuously until the remaining lifetime ends. To save battery power when the unit is not used, it can be put into Hibernation Mode using the docking box by pressing the Bump key for 5 seconds. To exit from Hibernation Mode, press and hold the Right Key on the unit for 3 seconds to wake it up again. *Hibernation is for UNI 321 RT models MP101 and MP102 only
Factory Calibration Certificate
- The instrument was factory inspected, tested, and calibrated in accordance with the conditions and requirements of our registered Quality System, Operating Standards, and Sales Agreements.
Maintenance and Service
The UNI 321 RT is maintenance-free.
Safety Certifications
- UL/cUL:
- Class I, Group A,B,C,D
- Class II, Group E,F,G
- Class III; T4, -20°C ≤ Tamb ≤ 50°C
- IECEx: Ex ia IIC T4
- ATEX: II 1G Ex ia IIC T4
Proper Product Disposal at The End Of Life
The Waste Electrical and Electronic Equipment(WEEE) directive (2002/96/EC) is intended to promote the recycling of electrical and electronic equipment and its components at the end of life. This symbol (crossed-out wheeled bin) indicates a 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.