Kobold Heinrichs TMU-W Series User manual

Heinrichs Messtechnik GmbH
OPERATING MANUAL TMU-W / UMC4
November 2020
High-Pressure Coriolis Mass Flow Meter
TMU-W
Installation and operation manual
Please read the instructions carefully and store them in a safe place

Heinrichs Messtechnik GmbH
Page 2 of 118
OPERATING MANUAL TMU-W / UMC4
Contents
INTRODUCTION................................................................................................................................5
I. Shipping and storage; product inspection................................................................................................ 5
II. Warranty ................................................................................................................................................. 5
III. Maintenance, Repair and Hazardous substances..................................................................................... 5
IV. Disposal ................................................................................................................................................... 5
V. Supplementary operating instructions..................................................................................................... 5
VI. Operating manual of explosion-proof flowmeters................................................................................... 5
1. IDENTIFICATION......................................................................................................................6
2. STEPS PRIOR TO OPERATION...................................................................................................7
2.1 Safety advisory for the user ..................................................................................................................... 8
2.2 Hazard warnings ...................................................................................................................................... 8
2.3 Proper use of the device .......................................................................................................................... 9
2.4 Installation and servicing ......................................................................................................................... 9
2.5 Returning your flowmeter for servicing or calibration ............................................................................10
2.6 Replacement of the transmitter electronics............................................................................................10
2.7 Maintenance...........................................................................................................................................11
Transmitter.............................................................................................................................................. 11
Coriolis mass flow sensor ........................................................................................................................11
3. THE TMU-W SENSOR ............................................................................................................12
3.1 Application domain of the TMU-W sensor ..............................................................................................12
3.2 Mode of operation..................................................................................................................................12
Measuring principle ................................................................................................................................ 12
System configuration ..............................................................................................................................12
Acquisition............................................................................................................................................... 12
3.3 Performance characteristics of the TMU-W sensor.................................................................................13
Reference conditions .............................................................................................................................. 13
TMU-W flow ranges ................................................................................................................................13
Density measurement ............................................................................................................................. 13
Accuracy ..................................................................................................................................................14
Pressure loss in Hydrogen dispensers.....................................................................................................14
Environmental Conditions....................................................................................................................... 14
3.4 Operating conditions ..............................................................................................................................15
Installation...............................................................................................................................................15
Installation Orientation ...........................................................................................................................16
Pressure surges .......................................................................................................................................18
Using the device with hazardous fluids...................................................................................................18
Vibration stability....................................................................................................................................18
Process conditions................................................................................................................................... 19
Gas content ............................................................................................................................................. 19
Process pressure range ...........................................................................................................................19
Outlet pressure .......................................................................................................................................19
Connection to the transmitter ................................................................................................................19
3.5 Construction details................................................................................................................................20
Installation lengths and weight ............................................................................................................... 20
Dimension drawing for the type TMU-W004..........................................................................................20
Dimension drawing for the type TMU-W006..........................................................................................21
Dimension drawing for the type TMU-W012..........................................................................................21
Materials .................................................................................................................................................21

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OPERATING MANUAL TMU-W / UMC4
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4. UMC4 TRANSMITTER ............................................................................................................22
4.1 Application domain of the UMC4 transmitter.........................................................................................22
4.2 Mode of Operation.................................................................................................................................22
4.3 System configuration..............................................................................................................................22
4.4 UMC4 performance characteristics.........................................................................................................22
Reference conditions .............................................................................................................................. 22
Measured error ....................................................................................................................................... 22
Repeatability error .................................................................................................................................. 22
Influence of ambient temperature..........................................................................................................22
4.5 Operating conditions ..............................................................................................................................23
Installation conditions and cable glands ................................................................................................. 23
NPT cable glands .....................................................................................................................................23
Environmental conditions .......................................................................................................................24
Process conditions................................................................................................................................... 25
4.6 DSB data memory module......................................................................................................................25
4.7 Input measured variables .......................................................................................................................26
Measured Values.....................................................................................................................................26
Measuring range ..................................................................................................................................... 26
4.8 Outputs ..................................................................................................................................................27
Output circuits......................................................................................................................................... 27
Current outputs.......................................................................................................................................28
Binary Outputs ........................................................................................................................................29
4.9 Construction details UMC4 .....................................................................................................................30
Mounting / Dimensions...........................................................................................................................30
Weight.....................................................................................................................................................32
Material...................................................................................................................................................32
4.10 Construction details UMC4-RM...............................................................................................................33
Dimensions..............................................................................................................................................33
Mounting bore pattern ........................................................................................................................... 34
Weight.....................................................................................................................................................34
Materials .................................................................................................................................................34
5. ELECTRICAL CONNECTIONS UMC4........................................................................................35
5.1 Mains connections and their protection classes......................................................................................35
Wiring diagrams ......................................................................................................................................35
The output terminals............................................................................................................................... 36
Sensor connection...................................................................................................................................36
6. CERTIFICATES AND APPROVALS ............................................................................................41
6.1 Conformity to CE Directives ....................................................................................................................41
6.2 Explosion protection...............................................................................................................................41
6.3 Custody transfer applications .................................................................................................................41
6.4 Patents ...................................................................................................................................................41

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OPERATING MANUAL TMU-W / UMC4
7. OPERATION...........................................................................................................................42
7.1 Control unit BE4......................................................................................................................................42
Introduction ............................................................................................................................................42
Operating modes.....................................................................................................................................43
Operator interface ..................................................................................................................................43
The keys and their functions ................................................................................................................... 44
Functional classes, functions and parameters ........................................................................................45
Display..................................................................................................................................................... 46
7.2 UMC4 transmitter functional classes ......................................................................................................47
MEASURED VALUES functional class.......................................................................................................48
PASSWORD functional class .................................................................................................................... 53
COUNTER functional class.......................................................................................................................55
MEASUREMENT PROCESSING functional class........................................................................................ 57
FLOW functional class .............................................................................................................................61
DENSITY functional class ......................................................................................................................... 66
TEMPERATURE functional class...............................................................................................................73
PULSE OUTPUT functional class ..............................................................................................................76
STATUS functional class........................................................................................................................... 79
CURRENT OUTPUTS functional class ....................................................................................................... 82
SIMULATION functional class .................................................................................................................. 87
SELF-TEST functional class.......................................................................................................................91
UMC4 TRANSMITTER SETTINGS functional class .................................................................................... 94
SENSOR SETTINGS functional class..........................................................................................................97
CUSTODY TRANSFER functional class....................................................................................................100
7.3 Density calibration................................................................................................................................105
Conditions .............................................................................................................................................105
Procedure..............................................................................................................................................105
8. TROUBLE SHOOTING...........................................................................................................107
8.1 Self-help Checklist.................................................................................................................................107
8.2 UMC4 transmitter error messages........................................................................................................108
Standard operating mode .....................................................................................................................108
Custody transfer mode..........................................................................................................................108
List of error messages ...........................................................................................................................109
8.3 Returning the Meter.............................................................................................................................113
Declaration of Decontamination...........................................................................................................114
9. DECLARATION OF CONFORMITY .........................................................................................115

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OPERATING MANUAL TMU-W / UMC4
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Introduction
I. Shipping and storage; product inspection
Shipping and storage
The device is to be safeguarded against dampness, contamination (especially the inside of the flow meter),
impact and damage. Open the packaging with caution to prevent unintentional damage.
Adhere to the temperature limits during storage.
Product inspection
Upon receipt of the product, check the contents of the box and the product particulars against the
information on the delivery slip and order form so as to ensure that all ordered components have been
supplied. Notify us of any shipping damage immediately upon receipt of the product. Any damage claim
received at a later time will not be honoured.
II. Warranty
Your flowmeter was manufactured in accordance with the highest quality standards and was thoroughly
tested prior to shipment. However, in the event any problem arises with your device, we will be happy to
resolve the problem for you as quickly as possible under the terms of the warranty, which can be found in
the terms and conditions of delivery. Your warranty will only be honoured if the device was installed and
operated in accordance with the instructions for your device. Any mounting, commissioning and/or
maintenance work is to be carried out by qualified and authorized technicians only.
III. Maintenance, Repair and Hazardous substances
When used in the intended manner no special maintenance is required. However, the flowmeter should be
checked within the context of routine maintenance of the facility and the pipelines. Should a repair,
calibration or maintenance become necessary, be sure to clean the device thoroughly and follow the steps in
section 0, “Returning the Meter” before returning the device to Heinrichs Messtechnik.
The operator is liable for any substance removal or personal damage costs arising from inadequate cleaning
of a device sent for repair.
IV. Disposal
Observe the regulations applicable to disposal in the country of installation!
V. Supplementary operating instructions
Supplement operating manuals are available for special features, interfaces and operations relating to your
device, request your copy from our service department.
VI. Operating manual of explosion-proof flowmeters
For installation of the flowmeter within hazardous areas read the operation manual of explosion-proof
flowmeters. It contains all the EX-relevant information for your flowmeter.
Warning!
Only devices designated as EX-certified on their rating plates may be used in areas of
potentially explosive atmospheres!
The use of standard equipment in EX-hazardous areas is strictly prohibited.

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OPERATING MANUAL TMU-W / UMC4
1. Identification
Manufacturer:
Heinrichs Messtechnik GmbH
Robert-Perthel-Strasse 9
D-50739 Cologne
Germany
Phone: [phone]
Fax: [phone]
Internet: www.heinrichs.eu
Email: [email protected]
Product type:
Mass flow-rate meter for liquid and gaseous products under high pressure
Product name:
Sensor type: TMU-W
Transmitter type: UMC4 or UMC4-RM
File name:
tmu-w_umc4_ba_20.02_en.docx
Version:.
20.02, dated November 5, 2020

Heinrichs Messtechnik GmbH
OPERATING MANUAL TMU-W / UMC4
Page 7 of 118
2. Steps prior to operation
It is essential that you read these operating instructions before installing and
operating the device. The device is to be installed and serviced by a qualified
technician only. The UMC4 transmitter is to be used exclusively to measure mass
and volume flow, as well as liquid and gas density and temperature, in conjunction
with a Heinrichs Messtechnik TM, TME, TMR, TMU, TM-SH or HPC sensor.
Downloading of the present document from our web site www.heinrichs.eu and printing out this
document is allowed only for the purposes of using our mass flowmeters. All rights reserved. No
instructions, wiring diagrams, and/or supplied software, or any portion thereof, may be produced, stored,
in a retrieval system or transmitted by any means, electronic, mechanical, photocopying or otherwise,
without the prior written permission of Heinrichs Messtechnik GmbH.
Although the materials in the present document were prepared with extreme care, errors cannot be
ruled out. Hence, neither the company, the programmer nor the author can be held legally or otherwise
responsible for any erroneous information and/or any loss or damage arising from the use of the
information enclosed.
Heinrichs Messtechnik GmbH extends no express or implied warranty in regard to the applicability of the
present document for any purpose other than that described.
We plan to optimize and improve the products described and in so doing will incorporate not only our
own ideas but also, and in particular, any suggestions for improvement made by our customers. If you
feel that there is any way in which our products could be improved, please send your suggestions to the
following address:
Company:
Heinrichs Messtechnik GmbH
HM-EE (R&D Department)
Robert-Perthel-Strasse 9
D-50739 Cologne
Germany
or:
via fax : [phone]
via email: [email protected]
Note:
We reserve the right to change the technical data in this manual in the light of any
technical progress that might be made.
For updates regarding this product, visit our website at www.heinrichs.eu, where you
will also find contact information for the Heinrichs Messtechnik distributor nearest you.
For information regarding our own sales operations, contact us at [e-mail].

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OPERATING MANUAL TMU-W / UMC4
2.1 Safety advisory for the user
The present document contains the information that you need in order to operate the product described
herein properly. This document is intended for use by qualified personnel. This means personnel who are
qualified to operate the device described herein safely, including
electronics engineers,
electrical engineers, or
service technicians
who are conversant with the safety regulations pertaining to the use of electrical and automated
technical devices and with the applicable laws and regulations in their own country.
Such personnel must be authorized by the facility operator to install, commission and service the product
described herein, and must have read and understood the contents of this operating instructions before
working with the device.
2.2 Hazard warnings
The purpose of the hazard warnings listed below is to ensure that device operators and maintenance
personnel are not injured and that the flow meter and any devices connected to it are not damaged.
The safety advisories and hazard warnings in the present document that aim to avoid placing operators
and maintenance personnel at risk and to avoid material damage are prioritized using the terms listed
below, which are defined as follows in regard to these instructions herein and the advisories pertaining
to the device itself.
Warning
means that failure to take the prescribed precautions could result in injury, substantial
material damage or even death. Always comply to these warnings and proceed with
caution.
Caution
means that failure to take the prescribed precaution could result in material damage or
destruction of the device. We advice always to abide to these instructions!
Note
means that the accompanying text contains important information about the product,
handling the product or about a section of the documentation that is of particular
importance.

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OPERATING MANUAL TMU-W / UMC4
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2.3 Proper use of the device
The Coriolis Mass Flow Sensor is intended for the sole use of direct and continuous mass flow
measurement of liquids and gases.
To ensure safety for people and the environment adhere to the installation and operational instructions
and warning in this manual
Warning
The operator is responsible for ensuring that the material used in the sensor and
housing are suitable and that such material meets the requirements for the process
medium and the ambient site conditions.
The manufacturer accepts no responsibility for the selection of unsuitably materials.
Warning
Only sensors marked as EX-certified on their rating plates may be used in EX hazardous
locations. Standard equipment is not permitted for installation and use in EX hazardous
locations.
For installation within hazardous areas read the Ex-supplementary manual. It contains
all EX-relevant parameters for the sensor and the UMC4 transmitter.
Caution
To ensure the device performs correctly and safely, it must be shipped, stored, set up,
mounted, operated and maintained correctly.
2.4 Installation and servicing
The devices described in this manual are to be installed and serviced only by qualified technical
personnel such as a qualified Heinrichs Messtechnik electronics engineer or service technician.
Warning
Before servicing, the device must be completely de-energised and disconnected from all
peripheral devices. The technician must also ensure that the device is completely
disconnected from any live circuits.
Only original replacement parts are to be used.
Heinrichs Messtechnik GmbH accepts no liability for any loss or damage of any kind arising from
improper operation of any product, improper handling or use of any replacement part, or from
external electrical or mechanical effects, overvoltage or lightning. Any such improper operation, use
or handling shall automatically invalidate the warranty for the product concerned.
In the event a problem arises with your device, or if you need assistance in diagnosing a problem with
your device, please contact us at one of the following numbers to arrange to have your device repaired:
[phone] [phone]

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OPERATING MANUAL TMU-W / UMC4
2.5 Returning your flowmeter for servicing or calibration
Before sending your flowmeter back to us, for servicing or calibration, make sure it is completely clean.
Any residues of substances that could be hazardous to the environment or human health are to be
removed from all crevices, recesses, gaskets, and cavities of the housing before the device is shipped.
Warning
The operator is liable for any loss or damage of any kind, including personal injury,
decontamination measures, removal operations and the like that are attributable to
inadequate cleaning of the device.
Any device sent in for servicing is to be accompanied by a declaration of
Decontamination, a template of which is provided in section 8.3.1.
When returned, the device is to be accompanied by a document describing the problems encountered.
Please include in this document the name of a contact person whom our technical service department
can contact to enable us to repair your device as expeditiously as possible and minimize the repair costs.
2.6 Replacement of the transmitter electronics
Before replacing the transmitter electronics, read the safety instructions in Section 2.4, “Installation and
servicing” on page 9.
The data memory chip (DAB) with the calibrating data of the sensor is an integral component of the
control unit (display BE4). Removal and installation of the control unit is described in chapter 4.6, “DSB
data memory module” on page 25.
Should an exchange of the transmitter electronics become necessary, it is essential that the whole
electronic stack is replaced. This comprises of all circuit boards in the electronic compartment and in the
terminal compartment. The overall accuracy of the measurement up to the analogous outputs can only
be guaranteed when all circuit boards are replaced. Only the control unit with the integrated memory for
the calibrating data of the sensor shall remain with the device.
Caution
The complete stack is to be replaced with all of its printed circuit boards (with the
exception for the display unit containing the memory module). This is particularly
important for the explosion-proof transmitter. The specified precision of the
electronics is only guaranteed if the complete stack is replaced.

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OPERATING MANUAL TMU-W / UMC4
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2.7 Maintenance
Transmitter
The transmitter is maintenance-free.
We recommend cleaning the viewing-glass of the transmitter at regular intervals; check the enclosure for
corrosion damages and the solid seat of the cable glands.
Warning!
In the event an enclosure lid O-ring gasket is damaged, humidity may enter the
enclosure and cause damage to the internal electronic circuits.
Indications of such are:
Visible discolouration’s or condensation on the viewing-glass of the transmitter,
corrosion damages to the enclosure,
Coriolis mass flow sensor
The sensor is largely maintenance-free. When handled correctly its functionality will only be impaired by
corrosion or deposits inside of the measuring tubes. Therefore, both should be implicitly avoided. Remove
deposits in the tubes and in or around the splitter on a regularly basis by means of a suitably washing
method. Failure to do so may result in a loss of measurement precision.
Warning!
In the event of a tube rupture, e.g. due to corrosion or damage, medium will leak into
and fill the enclosures body, which can lead to subsequent damage to the external
housing, particularly at high process pressures!

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OPERATING MANUAL TMU-W / UMC4
3. The TMU-W sensor
3.1 Application domain of the TMU-W sensor
The TMU-W sensor is intended solely for the direct and continuous mass flow measurement of liquids and
gases under high pressure, irrespective of their conductivity, density, temperature, pressure, or viscosity.
The sensor can be utilised for the direct and continuous mass flow measurement of chemical fluids,
suspensions, molasses, paint, varnish, lacquer, pastes and similar materials.
3.2 Mode of operation
Measuring principle
The mass flowmeter is based on the Coriolis
principle whereby in a rotating system a
force (known as the Coriolis force) is exerted
on a mass at a rotation point that is moving
towards or away from this point.
System configuration
The flowmeter consists of a sensor mounted in to a piping system and a remote installed transmitter (see
Section 4.1, “Application domain of the UMC4” on page 22), connected to the sensor via a special cable (e.g.
on a wall or to a pipe).
The transmitter oscillates the flow tubes of the sensor by means of an excitation coil and captures, via pick-
up coils, the measuring signal which is proportional to the mass flow. After temperature compensation, the
measuring signal is converted into an analogue output signal that is consistent with the measuring range
setting.
Acquisition
Measured variables: Mass flow,
Temperature.
 
  mFC2

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OPERATING MANUAL TMU-W / UMC4
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3.3 Performance characteristics of the TMU-W sensor
Reference conditions
Established flow profile
Inlet section has to correspond to mounting length
Control valves always positioned downstream
Measurement is to be performed with a liquid containing no gas bubbles
Flow tubes are to be kept clean at all times
Process temperature is to be regulated as specified in Section 3.4.6, “Process conditions” on
page 19
Process pressure is to be regulated as specified in Section 3.4.8, “Process pressure range” on
page 19
Ambient temperature is to range from + 10 °C to + 30 °C (50 °F to 86 °F)
Warm-up period: 15 minutes
Standard calibration is to be performed at 20 %, 50 % and 100 % (two times each)
High-frequency interference is to be regulated according to the EMC standards stated in section
9, “Declaration of Conformity”on page 115
TMU-W flow ranges
Mass-flow
Model
min.
Measuring range
max.
Measuring range
Zero point stability
(of range)
kg/min
[lbs/min]
kg/min
[lbs/min]
kg/min
[lbs/min]
TMU-W004
0.13
[0.3]
4
[8.8]
0.0004
[0.0009]
TMU-W006
0.5
[1.1]
16
[35.3]
0.0016
[0.0035]
TMU-W012
2.5
[5.5]
25
[55.1]
0.0025
[0.0055]
Table 1: TMU-W flow ranges
Reference conditions: in conformity with IEC 770:
Temperature: 20 °C, relative humidity: 65 %, air pressure: 101.3 kPa
Fluid: water
Density measurement
Due to its constructive properties, a density calibration for the TMU-W family of sensors is not foreseen,
thus also disabling the determination of volume flow.

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OPERATING MANUAL TMU-W / UMC4
Accuracy
Mass flow
Fluids
TMU-W004 and TMU-W006
± 0.1 % of actual flow ± zero point stability (1)
TMU-W012
± 0.15 % of actual flow ± zero point stability (1)
Repeatability error
± 0.05 % of actual flow (sensor with transmitter) ± ½ zero point stability (1)
Mass flow
Gases
TMU-W004, TMU-W006 and
TMU-W012
± 0.5 % of actual flow ± zero point stability (1)
Repeatability error
± 0.25 % of actual flow (sensor with transmitter) ± ½ zero point stability (1)
Additional measured values
Volume flow
Not available
Temperature
± 0.5 °C
Hysteresis
n/a
Settling time
1 to 15 seconds
Startup drift
15 minutes
Long-term drift
± 0.02 % of upper-range value per year
Influence of ambient temperature
± 0.005 % per K
Influence of fluid temperature
Compensated
Influence of fluid pressure
For fluids: too small to be relevant
(1) Refer to section 3.3.2, “TMU-W flow ranges” for detailed information on flow ranges
Table 2: Flow-Rate Accuracy
Pressure loss in Hydrogen dispensers
The pressure loss of gases with constant mass flow is highly dependent on the operating pressure in the
mass meter and the resulting flow rate. The TMU-W is designed that its pressure lost will not exceed 30 bar
during a standardized refuelling operation with hydrogen and an empty vehicle tank, as defined in the
SAEJ2601. With an almost full vehicle tank, the pressure loss shall be much less than 20 bar.
Environmental Conditions
Ambient temperature
−40 °C to + 60 °C (-40 °F to 140 °F)
Storage temperature
−40 °C to + 80 °C (-40 °F to 176 °F)
Climatic category
In conformity with IEC 654-1. Unsheltered class D locations with direct open-air climate.
Ingress protection
Sensor: IP 67 (NEMA 6), Transmitter: IP68 / 1 m for 24 hours (NEMA 6P) acc. to DIN EN 60529 with
mounted and sufficiently tightened approved cable glands.

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OPERATING MANUAL TMU-W / UMC4
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3.4 Operating conditions
Installation
The sensor is to be protected, wherever possible, against valves, manifolds and similar fittings that generate
turbulence. The sensor is to be installed in accordance with the following instructions.
Diagram showing flowmeter installation
Flowmeter installation: A = sensor, B = valve, C = pipe clamps and supports
The sensor is not to be used to support a pipe or
other pipe components.
Do not install the sensor in suspended pipes.
Do not adjust the position of a pipe by pulling or
grasping the sensor.

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OPERATING MANUAL TMU-W / UMC4
Installation Orientation
Without compromising its accuracy, the TMU-W can be installed and operated in various orientations. The
following representations show the most common installation positions and provide tips on how the
operator can prevent installation-related influences on the measurement.
Standard installation position
Installation position A
Installation position B
Installation position C

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OPERATING MANUAL TMU-W / UMC4
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Type of medium
Position
Assessment
Pure liquids
Standard installation
position
Self-draining flow tubes
Position A or B
OK
Position C
Liquid residue remains in pipe
Liquids containing
homogeneously
dispersed gas
Standard installation
position
Self-draining flow tubes, gas bubbles do not accumulate
in flowmeter
Position A
Not recommended owing to gas bubble accumulation in
flowmeter
Position B
Gas bubbles may accumulate in the presence of low flow
velocities
Position C
No gas bubble accumulation in flowmeter, liquid residues
may remain in device after discharge
Liquids containing
substances that
could form deposits
Standard installation
position
Self-draining flow tubes, no deposit formation
Position A
OK
Position B
Substances in the liquid could form deposits at low flow
velocities
Position C
Not recommended owing to presence in flowmeter of
substances that could form deposits
Liquids containing
homogeneously dispersed
gas, which may contain
substances that could
form deposits
Standard installation
position
Self-draining flow tubes, no accumulation of gases or
substances that could form deposits
Position A
Not recommended owing to gas bubble accumulation in
flowmeter
Position B
Gas bubbles or substances that could form deposits at
low flow velocities
Position C
Not recommended owing to presence in flowmeter of
substances that could form deposits
Gases that do not form
condensate
Standard installation
position,
Position A, B or C
Any of these installations positions can be used
Gas, condensate-
forming gas/liquid,
moisture
Standard installation
position
Flow direction should be from top to bottom so that any
condensate that forms can flow out efficiently
Position A
OK
Position B
Condensate might form in flowmeter
Position C
Not recommended owing to condensate accumulation in
flowmeter
Table 3: Sensor Installation Positions

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OPERATING MANUAL TMU-W / UMC4
Pressure surges
Pressure surges in a pipe could be provoked by a sudden decrease in flow caused by rapid closing of a valve
or similar factors. This change in pressure can lead to under-pressure downstream from a valve that has
been closed rapidly, and to outgassing. If the valve is mounted directly on the inlet section of the flowmeter,
a gas bubble can form in the flow tube that can cause a measuring signal disturbance that would shift the
zero point of the output signal. In extreme cases, a pressure surge could cause mechanical damage to the
sensors and/or flow tube.
Whenever possible, quick-closing valves should be mounted downstream from the sensor. If this is not
feasible, such valves are to be mounted a minimum of 10 x DIA (Φ) ) from the nearest sensor. Alternatively,
valve closing speed can be reduced.
Using the device with hazardous fluids
The sealing technology used in the TMU-W mass flowmeters connector plug renders the device unsuitable
for use with hazardous fluids. Only sensors that meet the standards for safety instruments are suitable for
use with hazardous fluids.
In the case of welded components, a coloured liquid penetration test can be performed on the welds, or the
first seam of the weld can be x-rayed.
Vibration stability
The sensors are insensitive to vibration. Vibration stability has been validated in accordance with
DIN IEC 68-2-6, for up to 1 g at 10 to 150 Hz.
If pipe vibration is greater than 1 g in the 5-2000 Hz range, additional supports shall be mounted such as
depicted in the following images. Such supports will prevent vibration from affecting the device’s
mechanical configuration and/or measurement readings.
Image 1: Wall mounted supports Image 2: Floor-mounted supports

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OPERATING MANUAL TMU-W / UMC4
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Process conditions
Process temperature
− 40 °C to + 100 °C (-40 °F to 212 °F); rating plate specifications apply
Physical state
Liquid product (maximum density 2 kg/l)
Gaseous product (minimum density 0.002 kg/l in operating state)
Viscosity
0.3 up to 2,000 mPas (0.3 to 2,000 cP)
Gas content
The use of products containing gases is not permitted for custody transfer operations. In other applications,
the presence of gas will increase false readings. For the readings of products containing gas to be valid,
small gas bubbles must be homogeneously distributed in the fluid.
Large gas bubbles will automatically provoke extremely false readings and will shift the zero point. Thus, the
extent to which readings are false is determined by the process conditions. A rule of thumb in this regard is
as follows: A 1 % gas component will increase false readings by 1 %. The gas component is not to exceed 5 %.
Process pressure range
The applicable pressure range is dependent on the sensor and the selected process connections. It is
essential that the correct process connections for the intended process pressure is selected during the
ordering process.
TMU-W004 up to 1000 bar
TMU-W006 up to 500 bar
TMU-W012 up to 1000 bar
Outlet pressure
Outlet pressure must be greater than the vapour pressure ps of the measured product.
Connection to the transmitter
The sensors of the TMU-W family are only available as remote mount versions. The connection to the
sensor is achieved via a special ten-cored cable by means of a detachable screw-on connector.
During installation, regulations and applicable legal standards are to be adhered to.
The maximum cable length is 200 m (approx. 650 ft). See Section 5.1.3 on page 36 for information regarding
the connection and cable specifications.

Heinrichs Messtechnik GmbH
Page 20 of 118
OPERATING MANUAL TMU-W / UMC4
3.5 Construction details
Installation lengths and weight
Dimensions and weight:
Sensor length: flange to flange
Model
Process connection
Sensor length
mm [inch]
Sensor weight
kg [lbs]
TMU-W004
6MF 9/16-18 UNF
9/16 F562C
Hofer 7/8"
½ NPT(F),
347
[13.66]
2.8 [6.2]
TMU-W006
6MF 9/16-18 UNF
9/16 F562C
Hofer 7/8"
½ NPT(F),
400
[15.75]
3.8 [8.4]
TMU-W012
6MF 9/16-18 UNF
12MF 3/4-16 UNF
9/16 F562C
Hofer 7/8"
½ NPT(F),
415
[16.34]
5.2 [11.5]
Table 4: Dimensions and Weights
For further dimensions of the sensors, refer to the dimensions drawings in the following sections
Dimension drawing for the type TMU-W004
Remote mount configuration with IP67 Connector suitable for process temperatures up to 100 °C (212 °F):
For further dimensions and weight, see Section 3.5.1, “Installation lengths and weight”on page 20.