Printed in the Federal Republic of Germany
TR-Electronic GmbH 2019, All Rights Reserved
08/20/2021
TR-ECE-BA-GB-0138 v04
Page 9 of 47
1.6 Product description
The rotary encoder type A**100* with built-in systems is used for the detection of
changes in angle for fixed installations in potentially explosive gas and dust atmos-
pheres of Ex-Zone 1 or Ex-Zone 21. The rotary encoder consists of a flameproof en-
capsulated enclosure (6) made of stainless steel or aluminum. The evaluation elec-
tronics for detection of the position change is installed by TR-Electronic. The signal of
the position change respectively angle change is transmitted by a bearing-mounted
shaft (5) by means of a rotary encoder.
The explosion protection
enclosure
consists of an electric part, the electronics with sen-
sor and connection cable, and non-electric mounting components such as the mounting
flange (4) and the shaft (5). The transmitting of the torque is performed about an external
coupling.
The electrical assembly is connected via cables and up to three cable entries (1). The
cable entries are available as axial outlets (A) or as radial outlets (B). The connection
is either pre-assembled by TR-Electronic or can be performed by the customer.
Figure 1: Examples of enclosures with axial (A) and radial (B) cable inlets
(1)
1
…3 Cable inlets M20x1.5
(2)
6 Fastening screws M4x40-T20 A4-50 according to DIN EN ISO 14580
(3)
Connection cap
(4)
Flange
(5)
Shaft
(6)
Flameproof encapsulated
enclosure
(7)
Sealing plug
