mru MF Plus User manual

MRU GmbH USER MANUAL MFplus Part 2 OPTION TRGI
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MRU GmbH USER MANUAL MFplus Part 2 OPTION TRGI

MRU GmbH USER MANUAL MFplus Part 2 OPTION TRGI
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1Table of content
1 Table of content ...................................................................................................................................................................3
2 Introduction .........................................................................................................................................................................5
3 Pipe tests(TRGI)....................................................................................................................................................................6
3.1 Stress test..................................................................................................................................................................7
3.1.1 Connection diagram stress test LOAD side only ...................................................................................................8
3.1.2 Connection diagram stress test LOAD side and GAS supplier side .......................................................................9
3.1.3 Operation ...........................................................................................................................................................10
3.1.3.1 Apply pressure..........................................................................................................................................10
3.1.3.2 Adaption phase ........................................................................................................................................10
3.1.3.3 Test phase ................................................................................................................................................11
3.1.3.4 View results..............................................................................................................................................11
3.1.3.5 Save results ..............................................................................................................................................12
3.2 Leak-tightness test ..................................................................................................................................................13
3.2.1 Connection diagram leak-tightness test LOAD side only....................................................................................14
3.2.2 Connection diagram leak-tight test Load side and Gas supplier side .................................................................15
3.3 Operation ................................................................................................................................................................16
3.3.1.1 Apply pressure..........................................................................................................................................16
3.3.1.2 Adaption phase ........................................................................................................................................16
3.3.1.3 Test phase ................................................................................................................................................16
3.3.1.4 View results..............................................................................................................................................17
3.4 Usage capability tests..............................................................................................................................................18
3.4.1 Connection diagram usage capability test LOAD side only.................................................................................19
3.4.2 Connection diagram usage capability test without dismounting gas meter.......................................................20
3.4.3 Connection diagram usage capability test LOAD side only test with air.............................................................21
3.4.4 Connection diagram usage capability test LOAD side and Gas supplier side test with air .................................22
3.4.5 Connection diagram example with the optional Black box TRGI........................................................................23
3.4.6 Operation ...........................................................................................................................................................24
3.4.6.1 Automatic capacity determination using the optional Black box TRGI (Option).......................................24
3.4.6.2 Automatic capacity determination ...........................................................................................................25
3.4.6.3 Enter pipe capacity manually ...................................................................................................................26
3.4.6.4 Enter all other parameters........................................................................................................................26
3.4.6.5 Apply test pressure...................................................................................................................................26
3.4.6.6 Adaption phase ........................................................................................................................................27
3.4.6.7 Test phase ................................................................................................................................................27
3.4.6.8 View results..............................................................................................................................................27
3.4.6.9 Save results ..............................................................................................................................................28
3.5 Pipe tests TRGI 50 mbar..........................................................................................................................................30
3.5.1 Connection diagram pipe test ............................................................................................................................30
3.5.2 Operation ...........................................................................................................................................................30
3.5.2.1 Apply pressure..........................................................................................................................................31

MRU GmbH USER MANUAL MFplus Part 2 OPTION TRGI
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3.5.2.2 Adaption phase ........................................................................................................................................31
3.5.2.3 Pressure test.............................................................................................................................................31
3.6 Liquid gas pipes (TRF) .............................................................................................................................................32
3.6.1 Operation ...........................................................................................................................................................32
3.6.2 Stability test TRF.................................................................................................................................................33
3.6.2.1 Apply pressure..........................................................................................................................................33
3.6.2.2 Adaption phase ........................................................................................................................................34
3.6.2.3 Pressure test.............................................................................................................................................34
3.6.3 Leak-tight test (TRF)...........................................................................................................................................35
3.6.3.1 Apply pressure..........................................................................................................................................35
3.6.3.2 Adaption phase ........................................................................................................................................35
3.6.3.3 Pressure test.............................................................................................................................................36
4 Accessories.........................................................................................................................................................................37
4.1 Measuring accessory- Set 1, for ONE pipe gas meter # 61500 ................................................................................37
4.2 Measuring accessory- Set 2, for TWO pipe gas meter # 61501 ...............................................................................37
4.3 Connection set SMALL only for usage capability test # 64072 ................................................................................37
4.4 Additional accessory ...............................................................................................................................................37
4.5 Optionen .................................................................................................................................................................38
5 Technical details MFplus Option TRGI................................................................................................................................39
5.1 Sensor specifications pressure measurement ..........................................................................................................39
5.2 Calculated value gas leakage rate...........................................................................................................................39
5.3 Additional specifications .........................................................................................................................................39
6 Usage capability test..........................................................................................................................................................40
6.1 What is a Usage capability test ...............................................................................................................................40
6.2 Connection diagram Usage capability test without dismounting gas meter using SET #64072 (small)...................41
6.3 Operation ................................................................................................................................................................42
6.3.1 Automatic capacity determination .....................................................................................................................42
6.3.2 Enter pipe capacity manually .............................................................................................................................43
6.3.3 Enter all other parameters..................................................................................................................................43
6.3.4 Apply test pressure.............................................................................................................................................43
6.3.5 Adaption phase ..................................................................................................................................................44
6.3.6 Test phase ..........................................................................................................................................................44
6.3.7 View results........................................................................................................................................................45
6.3.8 Save results ........................................................................................................................................................46

MRU GmbH USER MANUAL MFplus Part 2 OPTION TRGI
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2Introduction
This manual is an important element of the delivery and explains in detail how to operate the MFplus but also
ensures the safety of the user and protects the environment.
This manual „USER MANUAL MFplus Part2 TRGI“ only addresses the TRGI functions.
For the general operation of the MFplus the manual „USER MANUAL MFplus” is essential!
It is the duty of each user to get familiar with the contents of these manuals and to follow the directions
especially regarding security.
This device must always be used according to the latest DVGW regulations!
The MFplus TRGI is used to determine gas leakage in low pressure gas tubes according to DVGW-worksheet G
600 (DVGW-TRGI)
The gas leakage rate will be determined according to device class D based on the pressure drop.
For the pressure the unit mbar and bar are used.
1 mbar <> 1 hPa
Before starting a measurement the device and accessories must be inspected for any damages. A
measurement is only possible after the zeroing procedure has been accomplished successfully.
The zeroing takes between 1 and 3 minutes (depending on sensor condition) and should be made in the
recommended measuring position.
For best visibility and operation the device can either be lying flat on the back or can be hanging using the
rear magnets. The position of the device doesn’t influence the test results (accuracy).
OVERLOAD
ATTENTION:
The device is protected against overload up to 2 Bar. In case the overload value is exceeded the pressure
sensor can be destroyed. In that case the warranty for this device will expire.
Calibration
The MFplus TRGI must be calibrated on a yearly basis.

MRU GmbH USER MANUAL MFplus Part 2 OPTION TRGI
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3Pipe tests(TRGI)
The option pipe test (TRGI) includes the following tests:
•PRE test on gas pipes according to TRGI G 600
•Leak tightness test on gas pipes according to TRGI G 600
•Usage capability test- / Leakage rete measurement according to TRGI G 600, incl. determination of
the pipe capacity
In the Measurement menu select Pipe test and confirm with OK
In the menu Pipe tests select the desired test and confirm with OK.

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3.1 Stress test
The stress test serves as loading test of the materials.
All new installed pipes will be tested without the use of faucets. All pipe ends must be closed with metal
plugs or caps.
Exception: The stress test can be carried out with faucets if their maximal pressure range is equivalent or
higher than the test pressure.
The stress test should be done as long as the pipes are still accessible and before they are covered with any
anti-freeze protection.
The test pressure is 1 bar (1.000 hPa).
The test medium is either air or a not burnable gas, NO Oxygen!
The test phase is usually 10 minutes. Temperature compensation is not mandatory but dependent on the
length of the pipes and the temperature difference between the test medium and the pipes - temperature
compensation is recommended.
Thereafter, the test pressure may not decrease within 10 minutes. During the test phase the pipes are to be
visually inspected, connections and junctions should be mechanically stressed.
It is forbidden to connect any test pipes with gas filled pipes!!
On the following pages different connection diagrams are shown.

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3.1.1 Connection diagram stress test LOAD side only
1 # 59148 Test plug
2 # 59074 Y-Divider with tap
3 # 59072 Hand pump
4 # 59076 Hose from MFplus to divider
5 MFplus

MRU GmbH USER MANUAL MFplus Part 2 OPTION TRGI
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3.1.2 Connection diagram stress test LOAD side and GAS supplier side
1 # 59148 Test plug (2x)
2 # 59074 Y-Divider with tap and hose
3 # 59072 Hand pump
4 # 59076 Hose from MFplus to divider
5 # 59320 Y-Divider without tap with hose
6 MFplus

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3.1.3 Operation
3.1.3.1 Apply pressure
In this screen you will apply pressure to the pipe you want to test.
Using the hand pump you will apply pressure (air) with open tap at the
Y-divider (2).
Times can be modified with the F2 button.
Times between 1 minute and 80 minutes are selectable.
The default value is 10 minutes.
Once the test pressure of 1 Bar is reached, the bar on the screen turns
green and the tap at the Y-divider (2) must be closed. With F1 the test
will be started.
3.1.3.2 Adaption phase
The adaption phase can be shortened at any time using the F1 button.
With F3 the temperature curve will be displayed.
Once the adaption phase is completed the stress test will start
automatically.