Cable Gland And Shield; Connection To Ground; Clamp Connection; Initial Operation - Extron electronics ExSens Instruction Manual

The cable has to be passed protected against mechanical damage. This could be
done by passing the cable through suitable areas, in tubular cable protection or on
cable platforms. A strain relief close to the cable gland has to be ensured (if neces-
sary use ExTox Accessories).

Cable Gland and Shield

5.2.2
The cable is lead through the supplied cable gland into the transmitter housing. The
cable gland consists of a flange, which is screwed into and adhered in the housing,
the clamp / sealing set and the thread bush.
You have to lead the cable now successively through the thread bush, clamp / seal-
ing set and the flange. It is very important that the clamp / sealing set are assem-
bled correctly. Please make sure that the end of cable is long enough for a later
assignment of connection clamps in the transmitter. You now have to assemble the
cable shield at the flange and fix the cable fastener by seizing the thread bush.
Transmitters ExSens-I and Sens-I will be delivered with cable glands as standard
which will ensure the explosion protection in conjunction with the specified cable. In
case of need it is possible to use other cable glands or blank plugs of dimension
M16. These shall be appropriate and approved, see certificate as component and
technical specification of its manufacturer.

Connection to Ground

5.2.3
For both transmitter series connection to ground can be done both inside the hous-
ing (PE in transmitter cable) and outside the housing (PE externally) for both
transmitter series. The connections are marked with the earthing symbol. Only for
the Sens(-I) the outer connection to ground has to be done at one fixing screws
when installing. There is no marking.
Connection of the ExSens-I and Sens-I is possible for line cross-sections up to
1 mm (cross-section 1.5 mm²). The outer connection of the ExSens-I is designed
for line cross-sections up to 2 mm (cross-section 4 mm²).

Clamp Connection

5.2.4
The clamp connection is described in the Transmitter Data Sheets ( DB).
The connections are plug clamps. Remove the plug before connecting the cable to
avoid mechanical damage. After the assembly is done you could connect the plug
again.

Initial Operation

5.3
On termination of the installation work the transmitter can be put into operation.
This is automatically done by over-plugging the power supply. The transmitter now
passes through the start-up phase according to Chapter 3.2.4 (Current interface
issues 0.8 mA for ca. 1 minute).
Please check the power supply at the transmitter. It should not be less than
18 V DC. Please consider the voltage drop on the transmitter cable occurring from
the control unit to the transmitter. If the transmitter is mounted in hazardous areas
please follow the instructions in Chapter 0 before performing any measurements.
To check the measuring function, please perform a calibration according to Chapter
6.5.1. Please pay attention to the hints on how to avoid false alarms.
Page 14 of 20
ExTox Transmitter ExSens(-I) and Sens(-I)
Instruction Manual