QED MicroPurge MP25 User manual

Operation Manual
MicroPurge® Flow Cell
MP25 & MP2T
QED Environmental Systems Inc.
2355 Bishop Circle West
Dexter, MI 48103
A Graco Company

Rev: 01 P/N: 95343 Page | 1
Safety Warnings
Wear appropriate Personal Protective Equipment (PPE) including safety glasses when working with the
QED MP25 or MP25T.
Intended for use with groundwater wells and common sampling pump systems with flow control
capability.
Table of Contents
1. Introduction........................................................................................................................................................3
1.1 Components ...............................................................................................................................................3
2. MP25 and MP25T Sonde ....................................................................................................................................4
2.1 MP25 and MP25T Sensor/Parameter List ........................................................................................................4
2.2 MP25 Sensors ...................................................................................................................................................4
2.3 MP25T Sensors .................................................................................................................................................5
2.4 MP25 and MP25T Flow Cell Setup ...................................................................................................................5
2.5 LED Indicators...................................................................................................................................................7
2.6 Cleaning and Storage........................................................................................................................................8
3. MicroPurge®Application Software ...................................................................................................................8
3.1 Installing the MicroPurge® App........................................................................................................................8
MicroPurge Application
tinyurl.com/ycal8zyq
MP25 & MP25T Manual
tinyurl.com/yawc4kb7
MP25 & MP25T Quick
Calibration Guide
tinyurl.com/y8lfh8j8

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3.2 Connecting your MP25 or MP25T for the first time.........................................................................................8
3.3 Home Screen ....................................................................................................................................................9
3.3.1 Snapshot ....................................................................................................................................................9
3.3.2 Find Another MP25 ................................................................................................................................ 10
3.3.3 View PurgeScan Logs .............................................................................................................................. 10
3.3.4 Settings ................................................................................................................................................... 10
3.4 Calibration and Calibration Logs.................................................................................................................... 10
3.4.1 Calibration .............................................................................................................................................. 10
3.4.2 Calibration Logs ...................................................................................................................................... 19
3.5 PurgeScan® Logging and Setup ..................................................................................................................... 20
3.5.1 PurgeScan Logging Setup and Interval ................................................................................................... 20
3.5.2 PurgeScan Logs....................................................................................................................................... 20
3.5.3 Sensors and Parameters......................................................................................................................... 20
3.5.4 Configure Stabilization Criteria............................................................................................................... 21
3.6 Backup Logs ................................................................................................................................................... 22
3.7 Other Operations........................................................................................................................................... 23
3.7.1Tablet Scroll Interval................................................................................................................................ 23
3.7.2 Bluetooth Scan Filter .............................................................................................................................. 23
3.7.3 Save GPS Location .................................................................................................................................. 23
3.7.4 Software Version .................................................................................................................................... 23
3.7.5 Wipe Turbidity Sensor ............................................................................................................................ 24
3.7.6 Selecting a storage location for PurgeScan Log Files ............................................................................. 25
4. Technical Notes ................................................................................................................................................... 25
4.1 Dissolved Oxygen........................................................................................................................................... 25
4.1.1 Oxygen Solubility in Water ..................................................................................................................... 25
4.1.2 Salinity Correction of DO mg/L............................................................................................................... 25
4.1.3 Barometric Pressure of Functions .......................................................................................................... 25
4.2 Specific Conductance, Salinity, and TDS........................................................................................................ 26
4.2.1 Specific Conductance Temperature Correction ..................................................................................... 26
4.2.2 Salinity Calculation ................................................................................................................................. 26
4.2.3 Total Disolved Salts (TDS) Calculation .................................................................................................... 26
4.3 CE Testing and Certification........................................................................................................................... 26

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4.4 Turbidity ........................................................................................................................................................ 26
5. Troubleshooting .................................................................................................................................................. 26
6. Warranty.............................................................................................................................................................. 27
1. Introduction
1.1 Components
1. MP25 or MP25T Multi-parameter Sonde with Storage/Calibration Cup
2. Bluetooth Battery Module
3. 3 meter waterproof cable
4. Bluetooth Battery Charger
1
.
2
8
4
3
6
.
5
7
9
10
11

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5. Calibration Stand
6. Flow Cup
7. Maintenance Kit
8. Sensor Guard
9. PTFE Thread Tape 1/4”
10. MP25 Flow Cell Adaptor
11. Assorted Fittings for flow cell connections to sampling pump tubing
2. MP25 and MP25T Sonde
2.1 MP25 and MP25T Sensor/Parameter List
1. Temperature (°C)
2. Temperature (°F)
3. pH (units)
4. pH (mV)
5. Specific Conductivity (µS/cm)
6. Specific Conductivity (mS/cm)
7. ORP (mV)
8. TDS (mg/L)
9. HDO (%Sat)
10. HDO (mg/L)
11. Salinity (PSS)
12. Turbidity (NTU) [MP25T Only]
2.2 MP25 Sensors
Conductivity
Temperature
pH/ORP Reference
Electrode
pH /ORP
Dissolved Oxygen

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2.3 MP25T Sensors
2.4 MP25 and MP25T Flow Cell Setup
2.4.1 Steps to connect the Flow Cell to the MP25 or MP25T
1. Remove storage cup from sonde
2. Attach flow cell adaptor to end of sonde (Only needed for MP25, MP25T has integral bayonet pins on
the sonde bottom cap.)
3. Insert sonde/adaptor into flow cell and push into bayonets slots, then turn sonde clockwise to lock.
Turbidity
Temperature
pH/ORP Reference
Electrode
Dissolved Oxygen
Conductivity
pH /ORP

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4. Determine necessary flow cell inlet connection fittings based on pump discharge tubing type and size.
5. Connect the included flow cell flexible tubing from pump to flow cell and then from flow cell discharge
to purge water collection bucket.
NOTE: The flow cell is designed to be used in either a horizontal or vertical position. Any gas bubbles in
the flow stream are vented out of the cell and away from the sensors weather vertical or horizontal. The
flow cell and sonde setup can be used while resting in the case as shown in the photo below as a
convenient work platform or will stand or rest on any flat surface. Horizontal use is preferred to avoid
possible damage if the standing sonde were to fall over.

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2.5 LED Indicators
Both the MP25 and MP25T have three LED indicators mounted to the internal circuit board, to provide
troubleshooting information to the user. The LEDs can be seen through the gap in the label, in the same window
as the serial number when the sonde is connected to the application.
Green LED: Blinks every one second to indicate adequate voltage from the Bluetooth Battery Pack.
Amber LED: Blinks once when the system is receiving RS-232 communication and blinks twice when the
PurgeScan Logging is activated.

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Red LED: Blinks five times at power-up when logging is enabled.
2.6 Cleaning and Storage
Clean your instrument periodically with warm soapy water. Clean sensor stems
with a soft brush. Laboratory-grade liquid detergent is preferred, but liquid
dishwashing soap is fine. Do not use abrasives. Do not use solvents such acetone.
Do not clean with gasoline, kerosene, or industrial cleaners. Rinse sensors free of
soap with tap water and store the sensors in tap water (see below).
Replace any o-rings with visible cracks. Keep o-rings greased with silicon grease
(found in your Maintenance Kit).
When storing the MP25 or MP25T, fill the storage cup provided with 1-2 oz. of tap or bottled drinking water and
install the storage cup on the sonde. NOTE: DO NOT use purified water such as, distilled, deionized or reverse
osmosis water for storage, as this will deplete the pH sensor and reference electrode and could result in
premature replacement.
3. MicroPurge®Application Software
3.1 Installing the MicroPurge® App
The MicroPurge® App is a free to download app that can be found at www.qedenv.com, under the products tab
for the MP25/MP25T. Below are the steps to take to install the app onto your Android Device.
3.2 Connecting your MP25 or MP25T for the first time
The MP25 and MP25T are Bluetooth capable devices so the user can wirelessly display and log their data. Below
is how the user will connect their MP25 or MP25T to their Android tablet or phone.
1. Connect the 3m waterproof cable to the top of the sonde.
2. Connect the nine pin RS-232 connector to the Bluetooth Battery Pack.
3. Press the Black Power Button next to the RS-232 connector on the Bluetooth Battery Pack.
4. Open the MicroPurge Application, after opening the app will automatically start searching for all
Bluetooth Devices in the area. This can be filtered out, see section 3.7.2.
5. Select the Bluetooth Device that will be labeled with the same Bluetooth ID that is located on the
bottom of the Bluetooth Battery Pack. If the MP25 or MP25T does not initially show up, press the Find
Another MP25 button and the app will refresh the list of devices.
6. Once selected the app will auto direct to the Bluetooth settings on the device. Select the corresponding
device and if prompted for a password, enter 1234.
7. Return to the MicroPurge Application, and wait until the application initializes and brings up the local
Bluetooth devices.
8. Select the corresponding device, the app will automatically start scrolling data from the device. At this
point the MP25 or MP25T is connected, the device however is NOT logging data. To see how to set up
the PurgeScan Logging, see section 3.4.

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3.3 Home Screen
After successfully connecting your MP25 or MP25T to your Android Device, you will see a default list of
parameters and data scrolling across the screen. The device is NOT logging data at this point, see section 3.4 to
set up the PurgeScan Logging feature. Below is a description of each of the four buttons you will see on the
bottom of the Home Screen. NOTE: The column on the left is the most current set of readings. The scroll interval
(the time between live readings) can be set. It’s easiest to use the same interval for the Tablet Scroll Interval as
you use for the PurgeScan Logging Interval to avoid confusion, but this isn’t required.
3.3.1 Snapshot
The Snapshot feature will take a single data reading of the parameters that are currently on the screen. To view
the saved Snapshots, in the file explorer of the users tablet notated with MicroPurge, after selecting that there
will be a folder named PurgeScan Logs. Under that folder the saved snapshots will be appended to the most
recent PurgeScan log created. In the Annotation column will be the Note the user has entered into the Enter
Note option.