Voith BTM User manual

Installation and Operating Manual
(Translation of the original installation and operating manual)
BTM
Non-contacting Thermal Measuring
Device
Version 7, 2022-03-29
3626-019800 en, Protection Class 0: public

Installation and Operating Manual / Version 7 / 3626-019800 en / Protection Class
0: public / 2022-03-29
2
BTM, Non-contacting Thermal Measuring Device
Contact
Contact
Voith Group
St. Pöltener Str. 43
89522 Heidenheim, GERMANY
Tel. + 49 7951 32
1666
E
-Mail: [e-mail]
Internet: www.voith.com
3626
-019800 en
This document describes the state of
design of the product at the time of the
editorial deadline on 20
22-03-29.
Copyright © by
J.M. Voith SE
& Co. KG
This document is protected by copyright.
It must not be translated, duplicated
(mechanically or elec
tron
ically) in whole
or in part, nor passed on to third parties
without the publisher's written approval.

BTM, Non-contacting Thermal Measuring Device
Contents
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Contents
1Possible Applications, BTM Characteristics 5
1.1 Use, operation 6
2BTM Functioning 7
2.1 Temperature sensor (or temperature sensor with adapter) 7
2.2 BTM blind screw (or BTM-X blind screw) 8
2.3 Stationary aerial with holder 8
2.4 Evaluator 8
3Technical Data 9
3.1 Temperature sensor 9
3.1.1 Adapter 10
3.2 BTM blind screws 11
3.2.1 BTM-X blind screw 12
3.3 Stationary aerial 13
3.3.1 Holder 14
3.4 Evaluator 14
3.4.1 Terminal assignment 16
3.4.2 Temperature drift 17
3.4.3 Temperature drift for temperature sensor with adapter 17
4User Information 18
5Safety 20
5.1 Safety information 20
5.1.1 Structure of safety information 20
5.2 Intended use 21
5.3 Unintended use 21
5.4 General information as to dangerous situations 21
5.5 Remaining risks 25
5.6 What to do in case of accidents 25
5.7 Information with regard to operation 25

BTM, Non-contacting Thermal Measuring Device
Contents
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5.8 Qualification of staff 25
5.9 Product monitoring 26
5.10 Nameplate 26
6Installation 27
6.1 As delivered condition, scope of supply 27
6.2 Installation - temperature sensor and stationary aerial 28
6.2.1 Temperature sensor 28
6.2.2 Temperature sensor with adapter 30
6.2.3 BTM blind screws 31
6.2.4 Stationary aerial 31
6.3 Mounting, connection - evaluator 33
7Display and Setting of Evaluator 34
7.1 How to display limit values 35
7.2 How to set limit values 36
8Commissioning 37
9Maintenance, Servicing 38
9.1 Outside cleaning 39
10 Disposal 40
11 Malfunctions - Remedial Actions, Troubleshooting 41
12 Queries, Orders Placed for Service Engineers and Spare Parts 46
13 Spare parts information 47
13.1 Temperature sensor 47
13.1.1 Adapter 47
13.2 BTM blind screws 48
13.2.1 BTM-X blind screw 48
13.3 Stationary aerial 48
13.3.1 Holder 49
13.4 Evaluator 49
14 Annex 50

BTM, Non-contacting Thermal Measuring Device
Possible Applications, BTM Characteristics
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1 Possible Applications, BTM
Characteristics
The non-contacting thermal measuring device (BTM) is a monitoring system for Voith
turbo couplings.
The BTM is used to measure the operating medium temperature of Voith turbo
couplings of sizes 366 up to 1330 (measuring range: 0 °C to 180 °C).
The non-contacting signal transmission allows measuring the operating medium
temperature during active operation and to draw conclusions to the actual coupling
stress.
As the temperature is measured directly in the operating medium, changes of stress
are quickly identified allowing to quickly react to possible overloads and to prevent
excess temperatures.
The loss of coupling filling through the fusible plugs and associated downtimes can
reliably be avoided.
Please note that the BTM, like any other temperature measuring system, indicates the
temperature with some time delay.
For evaluation and further processing of the data in the machine control system, the
time delay depending on the actual heating-up velocity of the operating fluid has to be
considered.
Moreover, the input power available for machine operation can be optimally used.
Please consult Voith.
Benefits and reaction possibilities:
–Temperature warning
–Switch-off of drive motor
–Reduction of engine speed (diesel engines)
–Reduction of load intake
–Optimization of load absorption of driven machine
Temperature drift
Chapter 3.4.2

BTM, Non-contacting Thermal Measuring Device
Possible Applications, BTM Characteristics
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Fusible plugs
The fusible plugs protect the turbo coupling against damage due to thermal overload.
WARNING
Risk of personal injuries and damage to property
The turbo coupling will be damaged if operation is continued after a fusible plug
responded.
•
When the BTM is used, it is not allowed to replace the
fusible plugs by blind
screws or by fusible plugs with different nominal response temperatures.
•Following the shutdown, the control system has to be locked in a way that
prevents automatic re-start.
•
Switch off the unit in which the turbo coupling is instal
led and secure the
switch against inadvertent switch-on.
•For all work performed on the turbo coupling and BTM ensure that both the
drive motor and the driven machine have stopped running and that a re-
start
is absolutely impossible.
•
The coupling may only b
e restarted if the turbo coupling temperature is below
the maximum permissible temperature allowed when switching on the motor!
1.1 Use, operation
The devices are only approved for proper and intended use in accordance with the
instructions. Contravention excludes any warranty and responsibility on the part of the
manufacturer!
–It is imperative to comply with the ambient conditions as specified in this operating
manual.
–The provision of lightning protection measures have to be ensured by the
operator.
–Ensure that the fusible plugs required in addition are used on each turbo coupling
which is operated with this measuring system.
Fusible plugs
Operating manual
of turbo coupling
Maximum
permissible
temperature
Operating manual
of turbo coupling
Intended use
Chapter 5.2
Fusible plugs
Operating manual
of turbo coupling

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BTM, Non-contacting Thermal Measuring Device
BTM Functioning
2 BTM Functioning
The non-contacting thermal measuring device (BTM) consists of four components:
– Temperature sensor (incl. temperature sensor with adapter)
– BTM blind screw (or BTM-X blind screw)
– Stationary aerial with holder
– Evaluator
Fig. 1
2.1 Temperature sensor (or temperature sensor with
adapter)
The temperature sensor is a passive component. It is screwed into the turbo coupling
outer wheel and its measuring tip projects directly into the operating medium.
The temperature sensor with adapter is used for retrofitting coupling sizes 487 to 650
of older models without rework.
The temperature sensor transmits the measuring signal without contact to the
stationary aerial.
Fitting and/or sensor
orientation
Chapter 6.2
Turbo coupling
VOITH BTM
Evaluator
Temperature
sensor
Holder
BTM blind screw
Aerial

BTM, Non-contacting Thermal Measuring Device
BTM Functioning
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2.2 BTM blind screw (or BTM-X blind screw)
The BTM blind screw is provided to compensate the mass of the temperature sensor
and it is mandatory to install the same opposite the temperature sensor. Without BTM
blind screw, impermissible forces will occur due to unbalance which may damage the
machine system.
The BTM-X blind screw serves as mass balance to the temperature sensor with
adapter (retrofit to coupling sizes 487 to 650 of older models without rework).
2.3 Stationary aerial with holder
The stationary aerial sends a radar signal to the temperature sensor and receives the
reflected measuring signal.
The measuring signal is routed to the evaluator via the connecting cable.
The holder is provided to fasten the stationary aerial.
2.4 Evaluator
The evaluator is an electronic controller with 4 measuring channels. The evaluator
generates the radar signals and receives, evaluated and processed the reflected
measuring signals.
The measured temperatures of every channel are displayed on the evaluator. In
addition, the measured temperatures are output as 4-20 mA signals.
Furthermore, two relay outputs are available per measuring channel with switching
thresholds (e.g. pre-warning, switch-off) adjustable via the keyboard on the evaluator.
Connect the evaluator to the machine controller by means of a screened multi-core
connecting line. A separate terminal chamber allows connecting the necessary cores
easily and safely.

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BTM, Non-contacting Thermal Measuring Device
Technical Data
3 Technical Data
3.1 Temperature sensor
Fig. 2
The following temperature sensors are available for the different turbo coupling sizes.
Dimension of thread M10x1.5 M18x1.5 M24x1.5
Suitable for coupling sizes 274 366 – 650 750 - 1330
Width across flats 18 30 36
Tightening torque
15 Nm
50 Nm
144 Nm
Weight 39 ± 2 g 76 ± 2 g 183 ± 2 g
Protection to EN 60529 IP 67
Sensor gap Axial distance
Max. permissible radial displacement
Max. permissible angular
misalignment
10 ± 3 mm
± 3 mm
± 3 °
Measuring range 0 °C … 180 °C
Operating medium temperature max. 200 °C
Measuring tolerance ± 2 K
Permissible ambient temperature -40 °C … 100 °C
Table 1
M10x1.5
M18x1.5
M24x1.5

BTM, Non-contacting Thermal Measuring Device
Technical Data
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3.1.1 Adapter
The adapter is used for retrofitting couplings sizes 487 to 650 of older models without
rework.
Fig. 3
The following adapter is available:
Dimension of thread
M18x1.5
Suitable for coupling sizes
487 – 650
Width across flats
24
Tightening torque
50 Nm
Weight
58 ± 2 g
Peripheral speed
max. 50 ms-1
Speed
max. 1500 rpm
Table 2
~ 34
~ 13
M18x1.5
~ 21
M18x1.5

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BTM, Non-contacting Thermal Measuring Device
Technical Data
3.2 BTM blind screws
Fig. 4
The following BTM blind screws are available for the different turbo coupling sizes:
Dimension of thread
M14x1.5
M18x1.5
M24x1.5
Suitable for coupling sizes
274
366 – 650
750 – 1330
Width across flats
8
27
32
Tightening torque
30 Nm
50 Nm
144 Nm
Weight
39 ± 2 g
76 ± 2 g
183 ± 2 g
Table 3
M18x1.5
M14x1.5
M24x1.5

BTM, Non-contacting Thermal Measuring Device
Technical Data
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3.2.1 BTM-X blind screw
The BTM-X blind screw serves as mass balance to the temperature sensor with
adapter (retrofit to coupling sizes 487 to 650 of older models without rework).
Fig. 5
The following BTM-X blind screw is available:
Dimension of thread
M18x1.5
Suitable for coupling sizes
487 – 650
Width across flats
24
Tightening torque
50 Nm
Weight
134 ± 2 g
Peripheral velocity
max. 50 ms
Speed
max. 1500 rpm
Table 4
~ 41.3
~ 13
M18x1.5

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BTM, Non-contacting Thermal Measuring Device
Technical Data
3.3 Stationary aerial
Fig. 6
Dimension of thread
M12
Width across flats
19 / 30
Tightening torque
50 Nm
Cable length
25 m
Min. bending radius static
dynamic
15 mm
45 mm
Cable material
PTFE
Protection to EN 60529
IP 67
Sensor gap axial distance
max. permissible radial displacement
max. permissible angular displacement
10 ± 3 mm
± 3 mm
± 3 °
Measuring range
0 °C … 200 °C
Measuring tolerance
± 2 K
Permissible ambient temperature
-40 °C … 100 °C
Table 5
NOTICE
Damage to property
For technical reasons, it is not possible to extend a cable or to repair a damaged
cable.
•
When running the aerial cable, observe the directive for electromagnetic
compatibility (EMC).
Ø 21
500
1000
Ø 4.2
Ø 3
Ø 4.2
M12
25000
12
Ø 29
25
16

BTM, Non-contacting Thermal Measuring Device
Technical Data
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3.3.1 Holder
Fig. 7
3.4 Evaluator
Fig. 8
Terminal
compartment
For cable
Ø13 - Ø18
Design
201.01236310

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BTM, Non-contacting Thermal Measuring Device
Technical Data
Fig. 9
Evaluator type GBP-733
Material
Silumin
Weight
4250 g
Protection to EN 60529
IP 65
Power supply
24 VDC (18 … 36 VDC)
Max. rated current consumption
approx. 330 mA at 18 VDC
Max. current consumption
2 A (inrush current)
Initialization time
approx. 10 s
Min. operating speed
300 rpm
Automatic signal calibration
approx. 1 s
Automatic signal calibration after the
Voith turbo coupling (VTC) was
cooled
down with water
approx. 5 s
Measuring range
0 °C … 200 °C
Displays
4x
3-digit 7-segment displays
Analog outputs:
Signal 4x
< 0.5
mA
: Defect
3.5
mA
: Error (e.g. standstill)
4.0
mA
: ≤0 °C
4…20
mA
: 0 °C … 200 °C
> 20
mA
: undefined (e.g. > 200 °C)
Load resistance
4x
max. 200
Ω
Switching outputs:
Signal
8x
Changeover contact (NC and NO)
Switching capacity
8x
max. 125 VAC / max. 110 VDC, max. 1 A
Temp thresholds
8x
Adjustable via keyboard
Measuring tolerance
± 2 K
Permissible ambient temperature
-40 °C … 65 °C
Table 6
CSA requirements
Evaluator type GBP-733
Approvals
CSA Certificate of Compliance No.1968359
Power supply
24 VDC ± 10 %
Pollution degree
2
Installation category
II
Altitude
2000 m
Humidity max
80 %; non-condensing
Table 7
Design (new)
201.04376310

BTM, Non-contacting Thermal Measuring Device
Technical Data
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3.4.1 Terminal assignment
Terminal No. Description
1 Supply voltage, +24 VDC
2 Supply voltage, 0 V
Channel 1
3 CH.1 Output relay, break contact NC (2) Prewarning
4
CH.1 Output relay, base C (1)
5
CH.1 Output relay, make contact
NO
(4)
6 CH.1 Output relay, break contact NC (2) Trip
7 CH.1 Output relay, base C (1)
8 CH.1 Output relay, make contact NO (4)
Channel 2
9
CH.2 Output relay, break contact NC (2) Prewarning
10
CH.2 Output relay, base
C
(1)
11 CH.2 Output relay, make contact NO (4)
12 CH.2 Output relay, break contact NC (2) Trip
13 CH.2 Output relay, base C (1)
14
CH.2 Output relay, make contact NO (4)
Channel 3
15 CH.3 Output relay, break contact NC (2) Prewarning
16 CH.3 Output relay, base C (1)
17 CH.3 Output relay, make contact NO (4)
18 CH.3 Output relay, break contact NC (2) Trip
19
CH.3 Output relay, base C (1)
20 CH.3 Output relay, make contact NO (4)
Channel 4
21 CH.4 Output relay, break contact NC (2) Prewarning
22 CH.4 Output relay, base C (1)
23
CH.4 Output relay, make contact NO (4)
24
CH.4 Output relay, break contact NC (2) Trip
25 CH.4 Output relay, base C (1)
26 CH.4 Output relay, make contact NO (4)
Channels 1 - 4
27 4 … 20 mA output CH.1
28
4 … 20 mA output CH.2
29
4 … 20 mA output CH.3
30 4 … 20 mA output CH.4
31 0 V basis (GND) for terminals 27 to 30
Table 8
Abbreviations:
GND
=
Signal ground
CH
=
Channel
NC
=
normally closed (break contact)
NO
=
Normally open (make contact)
C
=
Basis
= Low (Prewarning)
= High (Trip)

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BTM, Non-contacting Thermal Measuring Device
Technical Data
3.4.2 Temperature drift
The measuring error of the BTM depends on the heating rate.
Without knowing the drive and turbo coupling design in detail, the following limit tem-
peratures provide a reliable thermal monitoring of the coupling:
During nominal operation:
ϑ
Bmax = 95 °C with NBR seals (Perbunan)
105 °C with FPM seals (Viton)
Temporarily while the driven machine starts or in case of blocking:
ϑ
SPmax =
ϑ
SSS – 45 K
If more details of the drive and turbo coupling are known, it is possible to optimize
these limit temperatures. Please consult Voith.
Symbol
Meaning
Unit
ϑBmax
Maximum operating temperature
°C
ϑSPmax
Maximum peak temperature
°C
ϑSSS
Nominal response temperature of fusible plugs
°C
3.4.3 Temperature drift for temperature sensor with
adapter
The temperature sensor with adapter is used for retrofitting coupling sizes 487 to 650
of older models without rework.
Temporarily while the driven machine starts or in case of blocking:
ϑ
SPmax =
ϑ
SSS – 60 K
In all other respects, please Chapter 3.4.2 Temperature drift.

BTM, Non-contacting Thermal Measuring Device
User Information
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4 User Information
This manual will support you in using the non-contacting thermal measuring device
(BTM) in a safe, proper and economical way.
If you observe the information contained in this manual, you will
– increase the reliability and lifetime of the unit,
– avoid any risks
– reduce repairs and downtimes.
This manual must
– always be available at the BTM place of use,
– be read and used by every person who works on the unit or commissions the
same.
The non-contacting thermal measuring device has been manufactured to the latest
design standard and approved safety regulations. Nevertheless, the user's or third
party's life may be endangered or the unit or other property impaired in case of
improper handling or unintended use.
Spare parts:
Spare parts must comply with the requirements determined by Voith. This is
guaranteed when original spare parts are used.
Installation and/or use of non-original spare parts may negatively change the charac-
teristics of the BTM and may thus impair safety.
Voith is not liable for any damages resulting from the use of non-original spare parts.
Use only appropriate workshop equipment for maintenance. Professional
maintenance and/or repair can only be guaranteed by the manufacturer or an
authorized specialist workshop.

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BTM, Non-contacting Thermal Measuring Device
User Information
This manual has been issued with the utmost care. However, should you need any
further information, please contact:
Voith Group
St. Pöltener Str. 43
89522 Heidenheim, GERMANY
Tel: + 49 7951 32-1666
E-Mail: [e-mail]
Internet: www.voith.com
© Voith 2022.
The distribution as well as the reproduction of this document and the utilization and
communication of its contents are prohibited unless expressly permitted. Offenders
will be held liable for the payment of damages. All rights reserved in case a patent is
granted, or a utility model or design is registered.
Voith reserves the right for modifications.

BTM, Non-contacting Thermal Measuring Device
Safety
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5 Safety
5.1 Safety information
Safety information indicating the descriptions and symbols as described in the
following are used in the operating manual.
5.1.1 Structure of safety information
DANGER WORD
Hazard consequences
Source of hazard
•
Warding off of danger
Danger word
The danger word divides the severity of the danger in several levels:
Danger word
Severity of danger
DANGER
Death or serious injury (irreversible personal
injury)
WARNING
Death or serious injury possible
CAUTION
Minor or moderate injury possible
NOTICE
Possibly damage to property of
- the product
- its environment
SAFETY INFORMATION
General applications details, useful
information, safe job procedure and proper
safety measures
Table 9
Hazard consequences
Hazard consequences indicate the kind of hazard.
Source of hazard
The source of hazard indicates the cause of hazard.
Warding off of danger
Warding off of danger describes the measures to be taken to ward off a danger