KMT T1-PCM-IND Manual de usuario
KMT - Kraus Messtechnik GmbH
Gewerbering 9, D-83624 Otterfing, Germany, 08024-48737, Fax. 08024-5532
Home Page: http://www.kmt-telemetry.com, Email: info@kmt-telemetry.com
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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)
Version 2018-11 Technical Data are subject to change without notice!
3
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!
4
Dimensions Encoder - T1-PCM-STG
Draw about 1:1
Weight 16 gram
Version 2018-11 Technical Data are subject to change without notice!
5
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
Version 2018-11 Technical Data are subject to change without notice!
6
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!
7
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
Version 2018-11 Technical Data are subject to change without notice!
8
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)
Version 2018-11 Technical Data are subject to change without notice!
9
Receiving part - dimensions:
Weight: 0.750 kg
Version 2018-11 Technical Data are subject to change without notice!
10
Pin connection cable:
Pickup / Powerhead
Standard version for distance of 5-30*mm
*(depend of shaft diameter!)
DC-Power cable
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