KMT T1-PCM-IND Operating Instructions Manual

KMT - Kraus Messtechnik GmbH

Gewerbering 9, D-83624 Otterfing, Germany,  08024-48737, Fax. [phone]
Home Page: http://www.kmt-telemetry.com, Email: [e-mail]

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• Easy to assemble and operate

• Distance up to 30mm (Range)

• Strain gage sensors (>=350 Ohm)

• Powering of transmitter part inductive

• Full- and half bridge configuration

• No influence through radio frequency

• Excitation fixed 4 Volt DC

• Many systems can operated at the same time

• Auto-Zero adjustment

• Signal bandwidth 0…1200Hz (-3dB)

• Gain: 250-500-1000-2000 or 1000-2000-4000-8000

• Output +/-10V

• 16 bit ADC

• Output 4-20mA (Option)

• Digital transmission realized inductively

• System accuracy <0.2%

INSTRUCTIONS FOR QUALIFIED PERSONNEL ONLY!

Version 2018-11 Technical Data are subject to change without notice!

2

General description

The T1-PCM-IND single-channel telemetry system offers the easiest handling for the wireless transmission of strain gage
signals from rotating shafts. The encoder 35x24x14mm with a weight of 16g. The transmitter (encoder) part is simply mounted
on the rotating shaft with a special fiber reinforced tape.

The data transfer between transmitter and receiver is digital. The powering of the transmission part by the T1-PCM-IND is

inductive!.

Functional description

The T1-PCM-IND transmitter provides a pulse code modulated signal (PCM) to an induction winding around the shaft. The
magnetic field of this winding enables the inductive transmission of the signal from coil to pickup. From there the signal is
transferred by cable (5 m) to the receiver. The maximum distance between the transmitter coil and the pickup/powerhead is
30mm.

The receiver unit offers a BNC connector at the front panel with analog outputs  10 V and optional a current output of 4-20mA
Strain gage sensors (>=350 Ohm) in full- and half- bridge configuration can be directly connected to the transmitter. The

excitation is fixed to 4 Volt DC and the gain is set by plug-In bridge in 4 steps (250-500-1000-2000 or 1000-2000-4000-8000).
An auto-zero (AZ) adjustment is executed by pressing the AZ button on the front side of the receiver. The successful AZ
operation is indicated by a yellow LED. The yellow LED flashes as long as the AZ is in progress. When the AZ completes the
LED continuously illuminates. The AZ setting is stored in a Flash-RAM and thus is not lost during power-off.

T1-PCM-IND set contains:

Inductive Pickup/Powerhead
with 5m cable

T1-PCM-DEC

(Decoder)

Mounting tape
2 x 25mm x 50m

Ferrite tape - 30mm x 3 meter
(isolate magnetic field between
shaft and coil)

DC-Power cable

Hexagon key to
activate AZ switch

T1-PCM-STG-(IND)

(Encoder for strain gages)

CUL wire

0.5mm for coil

(Enamelled copper

wire)

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Technical data transmitting part:

T1-PCM-STG

Strain gage: Full and half bridge >=350 Ohm,
Excitation: 4 VDC (fixed)
Gain: 250-500-1000-2000 standard

1000-2000-4000-8000 on request!

Gain and Sensitivity

Gain 250 = +/-10mV/V

Gain 2000 = +/-1.250mV/V

Gain 500 = +/-5mV/V

Gain 4000 = +/-0.625mV/V

Gain 1000 = +/-2.5mV/V

Gain 8000 = +/-0.3125mV/V

AZ: Auto Zero calibration (via AZ button from receiver side)
Analog signal bandwidth: 0 - 1200 Hz (-3 dB)
Operating temperature: - 10 to + 80 °C
Resolution 16bit
Scanning rate 6.41 kHz
Static acceleration: up to 3000g
Powering: inductive

Dimensions: 35x24x14mm, weight 16g
Housing: splash-water resistant IP65 (except the connector pins)

T1-PCM-Pt100

Pt100 thermo sensor
Measurement range -50 to 250°C or -50 to 500°C (select by jumper)
Analog signal bandwidth: 0 - 10 Hz (-3 dB)
Operating temperature: - 10 to + 80 °C
Resolution 16bit
Scanning rate 6.41 kHz
Static acceleration: up to 3000g
Powering: inductive

Dimensions: 35x24x14mm, weight 16g
Housing: splash-water resistant IP65 (except the connector pins)

Version 2018-11 Technical Data are subject to change without notice!

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Dimensions Encoder - T1-PCM-STG

Draw about 1:1

Weight 16 gram

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Technical data receiving part

Front Rear

T1-PCM-DEC

Analogue output: +/-10V via BNC output 1200Hz

(delay between analog IN/OUT 1.8mS constant!!)

Optional add. 4-20mA output to the analog output

Auto Zero setting: via AZ button
Autozero LED:
Yellow ON- successful AZ
Yellow OFF- not successful AZ
if flashing, call support of KMT, error in EPROM
SL LED: Red ON = if error of data transmitting
SL LED: Red Flashing = distance to far
Power ON LED: Red ON = if power switch on
Output to Powerhead: via 6-pol. Tuchel
Fuse LED: Flashing if fuse is defect
Powering: 10-30V DC (min. 24Watt), Input via 7-pol. Tuchel

Switch: ON/OFF
Operating temperature: - 10 to +70 °C
Dimensions: 75 x 105 x 105 (without connectors!)
Weight 750 grams
Static acceleration: up to 200g

System accuracy*: +/- 0.2 %

<*measure with gain 1000, 350ohm (0.1%) full bridge - test bridge!!>

T1-PCM-Pickup/Powerhead (standard version)
Function: Receiving inductive PCM modulated data from the coil of

the T1-PCM-STG unit
Inductive frequency is 60kHz
Distance between the transmitter coil and the pickup is 5-30*mm
Output to T1-PCM-Decoder: Via 6-pol. Tuchel plug incl. 5m cable
Operating temperature: - 10 to +80 °C
Dimensions: 53x66x30mm (without cable)
Weight: 200 grams (without cable!)
Housing: splash-water resistant IP65 (except connector).
Cable length standard 5m! Optional 10 or 15m

*(depend of shaft diameter!)

Optional top-hat rail clip

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Pin connection & block diagram

Caution:

The Powerhead must be fixed in the middle of the coil in a distance from 5 to 25 (35)mm.

Don’t introduce any metal parts between or near the Powerhead and the shaft.

Don’t mix T1-PCM and Tel1-PCM parts together!

There are not compatible!

At high RPM we recommend to solder
the GAIN jumper! On the back side of
PCB are solder bridges what can use
instead of jumper!

Version 2018-11 Technical Data are subject to change without notice!

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Mounting example of power head / pickup:

Right installation

Wrong installation, head position is 90° wrong to the coil and will not work!

Ideal distance 10mm

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Receiving part:

Front

Rear

Analog output +/-10V

Power ON LED

AZ button

Power ON/OFF switch

Top-hat rail mounting clip

(Option!)

Flashing if fuse damage

Yellow ON- successful AZ
Yellow OFF- not successful AZ
If flashing, call support of KMT,
error in EPROM

LED ON = Error data transmission
LED Flashing = Distance between Coil
and Pickup is too
far away

Data input from Pickup and
output to Powerhead

Power IN DC 10 – 30V

LEMO Plug for 4-20mA
(at 4-20mA option only!)

Pin 1= grey = 4-20mA
Pin 2 = black = GND

+10V = 20mA
0V = 12mA

-10V = 4mA

Add. 4-20mA output (Option)

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Receiving part - dimensions:

Weight: 0.750 kg

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Pin connection cable:

Pickup / Powerhead

Standard version for distance of 5-30*mm

*(depend of shaft diameter!)

DC-Power cable

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Shaft installation

2 layers (layer by layer) of the special ferrite tape around
the shaft

Fix with 2 layers of mounting tape around the shaft

Coil, depends of shaft diameter 5-18 parallel windings of

0.5 CUL (Enamelled copper wire) wires, see table for help.

Fix with 2 layers of mounting tape around the coil

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Caution:

Fix T1-PCM-STG module with at least 10 layers of the special mounting tape around the shaft. Depending on the
shafts RPM and diameter particular attention needs to be paid to the safe mounting of the components.

The manufacturer doesn’t accept liability for damages, which results from insufficient attachment of the
individual components.

The tape is only for test purposes, in order to test the electrical function of the units in the idle state of the shaft.
During the rotation test appropriate safety precautions should be taken.

The entire installation may be used only by authorized persons. By using tape for the attachment, it has to be
used in the direction of rotation of the shaft and the end has to be secured. Only non-elastic tapes with high
tensile strength should be used for pre-fixing. Additionally, use hose clamps for final fixing!! The individual
components are to be distributed in such a way on the shaft that imbalances are avoided.

We recommend add. use a steel hose clamps for final fixing!!

We recommend soldering all pins of the T1-PCM-STG!

10 layers of the special mounting tape around the shaft.

Version 2018-11 Technical Data are subject to change without notice!

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Find the correct amount of windings

The number of windings depends on several factors. The most important influential factors are the diameter, the materiel of
the shaft and the environment around the shaft. The table standing below will help you to find the right number windings for
steel shafts. The table below is a help to estimate the number of windings fast. To optimize your results you can try one
winding more or less.

.

Diameter

(mm)

Windings

(+/-1)

max. distance with

(30mm) Powerhead

Ferrite tape

no. of layers

recommend capacitor

(Type MKT or MKS 250V)

1000

5

10mm

2

without built-in 220nF, only with external 68nF (specify at order

500

5

18mm

2

without built-in 220nF, only with external 100nF (specify at order)

500

3

5mm

2

with built-in 220nF (is standard in housing)

Not recommend for large diameters!!!!

300

5

22mm

2

with built-in 220nF (is standard in housing)

210

6

23mm

2

with built-in 220nF (is standard in housing)

160

7

23mm

2

with built-in 220nF (is standard in housing)

130

8

30mm

2

with built-in 220nF (is standard in housing)

90

11

30mm

2

with built-in 220nF (is standard in housing)

60

13

30mm

2

with built-in 220nF (is standard in housing)

30

14

30mm

2

with built-in 220nF (is standard in housing)

20

18

30mm

2

with built-in 220nF (is standard in housing)

Take note:

The typical distance between powerhead and coil is about 10mm!

At 10mm you have the lowest power consumption at the T1-PCM-DEC.

(At 5mm additional inductive power will flow in to the steel shaft and the T1-PCM-DEC will warm up!)

You can check it easy with an ampere meter at the power input of decoder!

Typical power consumption e.g. at 12V = 0.9-1.0A

Coil, depends of shaft diameter 5-18 windings of 0.5 CUL wire

Version 2018-11 Technical Data are subject to change without notice!

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T1-PCM-IND

Following must be considered at the mounting of the inductive power head

Example of mounting

Magnetic

field

Shaft with CUL

wire Coil

Don’t use for mounting any kind metal

in this area (25-30mm)! Otherwise

magnetic energy will flow in the metal

and decrease the distance between

power head and coil (on shaft)!

25-30mm

Wrong!!! Mounting (only if metal) plate cover the active area of

Version 2018-11 Technical Data are subject to change without notice!

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Powerhead / Pickup - distances (coil / head)

All distance are only „up to“ and can change a little, depens of diameters!

(typical shaft diameter 20-50mm)

PH-PU-Standard & XL

+/-10mm Z

10-25mm standard,

at XL 10-35mm X

+/-10mm Y

From center cross out

PH-PU-N25

+/-10mm Z

10-25mm X

+/-10mm Y

PH-PU-XL100Z

+/-50mm Z

10-30mm X

+/-10mm Y

Version 2018-11 Technical Data are subject to change without notice!

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Dimensions Powerhead / Pickup

66

Height 33mm

Cable length 5m
Optional 10...20m

30

Drill d= 4,3mm

10

43

53

33

33mm

66

Version 2018-11 Technical Data are subject to change without notice!

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Dimensions Powerhead / Pickup (Standard and XL) draw

Version 2018-11 Technical Data are subject to change without notice!

18

Dimensions Powerhead / Pickup (CRS at standard and XL) draw

CRS = cable rear side out!

Version 2018-11 Technical Data are subject to change without notice!

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Dimensions Powerhead / Pickup (N25) draw

Version 2018-11 Technical Data are subject to change without notice!

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Dimensions Powerhead / Pickup (XL100-Z) draw

Version 2018-11 Technical Data are subject to change without notice!

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Dimensions Powerhead / Pickup XXL draw

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Attention

• Use only shielded sensor cable

• When used on rotating shafts, all connections must be soldered.

• Mounting of the modules on a shaft must be first fixed with mounting tape (only for

prefixing) and then with a hose clamps!!!

Safety notes for inductive powering

• The device should only applied by instructed personnel.

• The power head emits strong magnetic radiation at 60 kHz to a distance of 20 cm.

Therefore persons with cardiac pacemakers should not work with this device!

• Magnetic data storage media should be kept in a distance of at least 3m from the power

head to avoid data loss. The same is valid for electromagnetic sensitive parts, devices and
systems.

• Do not place the power head in the switched-on state on metallic objects, because this

results in eddy currents, which could overload the device and strongly heat up small
objects. In addition, the probe could be destroyed!

• No metallic objects, other than the disc-type coil, should be located in the air gap of the

power head. The same applies to metallic parts within a radius of up to 15–20 mm in all
directions.

• Do not use damaged or faulty cables!

• Never touch in the area between shaft and inductive head, the rotating shaft itself or rotor

electronic contacts during operation!

• This is a “Class A” system suitable for operation in a laboratory or industrial environment.

The system can cause electromagnetic interference when used in residential areas or
environments. In this case the operator is responsible for establishing protective
procedures.

Version 2018-11 Technical Data are subject to change without notice!

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Special two half ring housing for on of shaft mounting

T1-PCM-STG

Strain gage: Full and 1/2 bridge >=350 Ohm,
Excitation: 4 VDC (fixed)
Gain: 250 - 500; 1000; 2000 (selectable by jumper!)

AZ: Auto Zero calibration (via AZ button from receiver side)
Analog signal bandwidth: 0 - 1200 Hz (-3 dB)

Operating temperature: - 10 to + 80 °C
Resolution 16bit
Scanning rate 6.41 kHz

Static acceleration: up to 3000g

Powering: Inductive
Housing: splash-water resistant IP65 (except the connector pins)

Restart the system after

gain setting!!!

(Power OFF/ON)

A new Auto Zero at the

decoder is requirement!

18 Windings CUL 0.5 or 0.63mm

We recommend soldering

the jumper!

Version 2018-11 Technical Data are subject to change without notice!

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Technical Data Transmitting Part:

T1-PCM-Pt100

Pt100 thermo sensor
Measurement range -50 to 250°C or -50 to 500°C (specify at order!)
Analog signal bandwidth: 0 - 10 Hz (-3 dB)
Operating temperature: - 10 to + 80 °C
Resolution 16bit
Scanning rate 6.41 kHz
Static acceleration: up to 3000g
Powering: inductive

Housing: splash-water resistant IP65 (except the connector pins)

Special two half ring housing for on of shaft mounting

Red dot = I-EXC

Version 2018-11 Technical Data are subject to change without notice!

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Version 2018-11 Technical Data are subject to change without notice!

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Special housing for end of shaft mounting

Wire connection:

EXC brown 4V bridge excitation
½ gray ½ bridge competition

-IN black Signal -­+IN white Signal +
GND blue Ground signal

Version 2018-11 Technical Data are subject to change without notice!

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Special housing for end of shaft mounting

Head position

Distance 2-20 mm

Coil position inside

Best result of distance you
reach, if the coil is in center
of the power head

Version 2018-11 Technical Data are subject to change without notice!

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Special housing for end of shaft mounting

Draw:

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Kraus Messtechnik GmbH

Gewerbering 9, D-83624 Otterfing,  [phone], Fax. [phone] – Germany
Home Page: http://www.kmt-telemetry.com Email: [e-mail]

Konformitätserklärung

Declaration of Conformity

Declaration de Conformité

Wir

KMT - Kraus Messtechnik GmbH

We

Nous
Anschrift

Gewerbering 9, D-83624 Otterfing, Germany

Address

Adress

erklären in alleiniger Verantwortung, daß das Produkt

declare under our sole responsibility, that the product

declarons sous notre seule responsibilité, que le produit

Bezeichnung

Messdatenübertragungssystem

Name

Nom

Typ,Modell,Artikel-Nr., Größe

T1-PCM-IND, T1-PCM-BATT

Type,Model, Article No.,Taille

Type, Modèle, Mo.d'Article,Taille

mit den Anforderungen der Normen und Richtlinien

fulfills the requirements of the standard and regulations of the Directive

satisfait aux exigences des normes et directives

Elektromagnetische Verträglichkeit EMV / EMC

DIN EN 61000-6-2; VDE 0839-6-2:2006-03 Elektromagnetische Verträglichkeit (EMV) - Teil 6-2:
Fachgrundnormen - Störfestigkeit für Industriebereiche (IEC 61000-6-2:2005); EN 61000-6-2:2005

DIN EN 61000-6-4; VDE 0839-6-4:2011-09 Elektromagnetische Verträglichkeit (EMV)
Teil 6-4: Fachgrundnormen - Störaussendung für Industriebereiche
(IEC 61000-6-4:2006 + A1:2010); EN 61000-6-4:2007 + A1:2011

und den angezogenen Prüfberichten übereinstimmt und damit den Bestimmungen entspricht.

and the taken test reports und therefore corresponds to the regulations of the Directive

et les rapports d'essais notifiés et, ainsi, correspond aux règlement de la Directive.

Otterfing, 12.04.20017

Martin Kraus

Ort und Datum der Ausstellung

Name und Unterschrift des Befugten

Place and Date of Issue

Name and Signature of authorized person

Lieu et date d'établissement

Nom et signature de la personne autorisée