Version 2018-11
Technical Data are subject to change without notice!
2
General Description
The TEL1-PCM single-channel telemetry system offers the easiest handling for the wireless transmission of strain gage signals
from rotating shafts. The very small encoder 35 x 18 x 12 mm with a weight of 13g. 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 TEL1-PCM BATT is
supplied by 6-9V battery.
Functional Description
The TEL1-PCM-BATT 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 is 150mm.
The receiver unit offers a BNC connector at the front panel with analog outputs
10 V and a optional a digital output for PCM
interface ECIA100 (for notebooks) or IF16 (PCI Desktop). An LED bar indicator shows the actual level and a successful Auto
Zero calibration. Overload is indicated by the last LED´s in pos. or neg. direction of the bar graph. These OVL-LED´s operate in
peak-hold mode and are reset by pressing the overload switch.
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 the gain switch on the receiver side. 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
in the middle of the LED bar indicator. The yellow LED flashes as long as the AZ is in progress. When the AZ completes the
LED continuously illuminates. A continued flashing of the yellow LED indicates some error in the AZ electronics. In this case
please contact the support of KMT. The AZ setting is stored in a Flash-RAM and thus is not lost during power-off. Use only
shielded sensor cable.
TEL1-PCM-BATT Set Contains:
Inductive PH-Pickup
with 5m cable
TEL1-PCM-BATT-
DEC (Decoder)
Mounting tape
2x 25mm
Length 50meter
Ferrite tape
30mm x 3 meter
(isolate magnetic field
between shaft and coil)
Screw driver to
set the gain
Hexagon key to
activate the OLV
and AZ switch
TEL1-PCM-BATT-STG
(Encoder for strain gages)
DC-Power cable
CUL wire
0.5mm for coil
(Enamelled copper
wire)
6V Lithium battery CR-P2
not incl. in set!
Must be purchased in your
own country!
