mru 400GD User manual

HC40X
RM400
IR400
RF400
CO400
CD400
400GD
USER MANUAL
6812EN

User manual 400GD
2 / 45 MRU GmbH, D-74172 Neckarsulm
Manufacturer:
Legal notices / Intellectual property rights comments
Original user manual
© 2022 by MRU
No part of this manual may be published in any form (print, photocopy, electronic
media or any other publication form) without a written approval by the publisher.
All user trademarks and name mark descriptions, even those which are not marked as
such, are properties of the respective owners.
Edition: 2022-02-23, V5.02.EN

User manual 400GD
MRU GmbH, D-74172 Neckarsulm 3 / 45
Table of content
1Information for product and safety .............................................. 6
1.1. Safety manual .................................................................................................6
1.2. Safety precautions.........................................................................................6
2Introduction...................................................................................... 7
2.1. Intended use ...................................................................................................7
2.2. About us ...........................................................................................................8
3Description...................................................................................... 10
3.1. Purpose .......................................................................................................... 10
3.2. The Analyser................................................................................................. 11
3.3. User interface............................................................................................... 11
3.4. Menu structure ......................................................................................... 12
4Operation ........................................................................................ 13
4.1. Commissioning............................................................................................ 13
4.2. Charging the battery................................................................................. 13
4.3. Switching on the analyser ....................................................................... 13
4.4. Make settings on the basic unit............................................................ 14
Setting options for QR code .......................................................................... 14
Setting language ................................................................................................ 15
Setting brightness.............................................................................................. 15
Setting volume.................................................................................................... 16
Setting Off time .................................................................................................. 16
4.5. Switching off the analyser ......................................................................... 17
5Measuring ....................................................................................... 18
5.1. Inserting interchangeable sensor ......................................................... 18
5.2. Measuring with interchangeable sensor HC40X............................. 18
Starting measurement...................................................................................... 19
Configuring measurement.............................................................................. 20
Setting Zeropoint............................................................................................... 20
Selecting gas........................................................................................................ 20
Setting alarm threshold ................................................................................... 21
Setting unit........................................................................................................... 21
5.3. Measuring with interchangeable sensor RM400 ............................ 22
Starting measurement...................................................................................... 22
Configuring measurement.............................................................................. 23
5.4. Measuring with interchangeable sensor HM400............................ 23
Starting measurement...................................................................................... 23
Configuring measurement.............................................................................. 24

User manual 400GD
4 / 45 MRU GmbH, D-74172 Neckarsulm
Selecting measured values..............................................................................24
Setting unit ........................................................................................................... 24
5.5. Measuring with interchangeable sensor IR400 ...............................25
Starting measurement......................................................................................25
Configuring measurement..............................................................................26
Setting emissivity................................................................................................26
Setting alarm threshold....................................................................................27
Setting unit ...........................................................................................................27
5.6. Measuring with interchangeable sensor RF400 ..............................28
Starting measurement......................................................................................28
Configuring measurement..............................................................................29
Setting Zeropoint ............................................................................................... 29
Selecting refrigerant..........................................................................................29
Setting alarm threshold....................................................................................30
5.7. Measuring with interchangeable sensor CO400 .............................30
Starting measurement......................................................................................30
Configuring measurement..............................................................................31
Setting Zeropoint ...............................................................................................31
Setting alarm threshold....................................................................................32
Setting unit ...........................................................................................................32
5.8. Measuring with interchangeable sensor CD400 .............................33
Starting measurement......................................................................................33
Configuring measurement..............................................................................33
Setting Zeropoint ............................................................................................... 34
Setting alarm threshold....................................................................................34
5.9. Transporting measurement protocol ..................................................35
6Maintenance and care....................................................................36
6.1. Maintenance.................................................................................................36
6.2. Care..................................................................................................................36
6.3. Sensor-specific care instructions ..........................................................36
7Appendix .........................................................................................37
7.1. Technical data 400 GD..............................................................................37
7.2. Interchangeable Sensors..........................................................................38
Interchangeable Sensor HC400 (Nr.11138)...............................................38
Interchangeable Sensor HC401 (Nr.11591)...............................................38
Interchangeable Sensor HC402 (Nr.11733)...............................................39
Interchangeable Sensor RM400 (Nr.11191)..............................................39
Interchangeable Sensor IR400 (Nr.12121).................................................40

User manual 400GD
MRU GmbH, D-74172 Neckarsulm 5 / 45
Interchangeable Sensor HM400 (Nr.11922)............................................. 40
Interchangeable Sensor RF400 (Nr.11900) ............................................... 41
Interchangeable sensor CO400 (Nr.12130)............................................... 42
Interchangeable sensor CD400 (Nr.12623)............................................... 42
7.3. Service menu................................................................................................ 43
8Declaration of conformity............................................................. 44

User manual 400GD
6 / 45 MRU GmbH, D-74172 Neckarsulm
1Information for product and safety
1.1. Safety manual
All general information and safety precautions of MRU products are
listed in the supplied separate safety manual.
Therefore, this manual must be read and observed before the first use
of the analyser.
Instrument-specific safety and warning requirements in this manual are
prefixed before dangerous actions.
1.2. Safety precautions
The used categories of safety precautions are here explained once
more.
DANGER
Identifies an immediate, impending hazard that, if
ignored, will result in severe bodily injuries or death.
WARNING
Identifies an immediate, impending hazard that, if
ignored, may result in severe bodily injuries, material
damage or death.
CAUTION
Identifies a possibly dangerous situation that, if
ignored, may result in minor injuries.
ATTENTION
Identifies a possibly harmful situation that, if ignored,
may result in damages to the device or its
surroundings.
NOTE
Identifies user tips and other especially important infor-
mation.
The explanation of safety notices:
CAUTION
HOT –danger of burns and fire hazards from gas
extraction probe.
Physical harm and property damage can be caused.
►Cool down the probe tube.

User manual 400GD
MRU GmbH, D-74172 Neckarsulm 7 / 45
2Introduction
•Read and observe the safety manual supplied separately.
•This user manual enables you to operate the analyser safely.
•Read this user manual carefully.
•Make yourself familiar with the analyser, before using it.
•The analyser may only be used by skilled personnel and may only be
used for its intended purpose.
•Pay special attention to the security and warning precautions, in
order to prevent injuries and product damages.
•MRU can’t be held responsible for damages or injuries, by not follow-
ing the instructions in this manual.
•Always keep this user manual near you, when working with the
analyser, to be able to read instructions as needed.
•Ensure to hand over all documents to when handing the analyser
over to other.
2.1. Intended use
The analyser is a multidetector. Due to interchangeable sensors, the
analyser can be used for a wide range of applications:
•Usable with interchangeable sensor RM400 for leak detection on ex-
haust pipes.
•Usable with interchangeable sensor HC400, HC401 and HC402 for
leak detection on gas lines in non-explosive environments.
•Usable with interchangeable sensor RF400 for leak detection on
refrigeration systems.
•Usable with interchangeable sensor HM400 to measure environmen-
tal parameters (air pressure, humidity, air temperature and dew
point).
•Usable with interchangeable sensor CO400 for monitoring the CO-
concentration in the ambient air.
•Usable with interchangeable sensor CD400 for monitoring the CO2-
concentration in the ambient air.
Note that all interchangeable sensors are developed for indoor use only.
►Do not use the interchangeable sensors outdoor.
The analyser records and stores measured values. The measured
values can be exported by QR code.
The analyser was manufactured according to relevant standards and
regulations. The analyser must be used according to the instructions
for the intended used.

User manual 400GD
8 / 45 MRU GmbH, D-74172 Neckarsulm
WARNING
Risk from manipulations to the measuring device
Operational safety hazard
Modifications or changes to the measuring device
are not allowed.
2.2. About us
The analyser is produced by the MRU GmbH in Neckarsulm, Germany
(Founded in 1984), a medium sized company that specializes in devel-
oping, producing and marketing high quality emission monitoring
analysers.
MRU GmbH produces a wide range of instruments, from standard
analysers up to tailor made industrial analysers.
Plant 1: Sales, Service, R&D
Plant 2: Production

User manual 400GD
MRU GmbH, D-74172 Neckarsulm 9 / 45
MRU GmbH
Fuchshalde 8 + 12
74172 Neckarsulm - Obereisesheim
GERMANY
Tel [phone] (Front office)
Tel [phone] (Service)
Fax [phone]
Email: [email protected]
Site: www.mru.eu

User manual 400GD
10 / 45 MRU GmbH, D-74172 Neckarsulm
3Description
3.1. Purpose
The main purpose of the analyser in combination with various inter-
changeable sensors is the detection of gases and exhaust gases in gas
and heating installations.
For example, checking of:
•freely laid gas pipelines
•ambient air for combustible gases
•manholes and cavities
•Installations for external tightness
•newly laid gas pipelines for leaks.
In addition, the range of application of the analyser can be extended by
further interchangeable sensors.
The following interchangeable sensors are available:
•Gas sensor H40x for detecting leaks in gas pipes.
•Humidity sensor RM400 for detecting leaks in flue pipes.
•Condensing humidity sensor RM400 for spillage tests on flue gas
•Systems
•Infrared temperature sensor IR400 for contactless measurement of
surface temperature
•Hygrometer sensor HM400 for the check of indoor climate.
•Refrigerant detector RF400 for leak detection on refrigeration
Systems
•Gas sensor CO400 for monitoring the CO-concentration in the
ambient air.
Visit our webpage www.mru.eu to see available options or talk to your
MRU representative.