GB
GB
15
§2.3 Temperature sensors
See figure 11 and 12.
Example of a temperature switch code: C1 - T548H -
D00
- S0 - K1 - Y - X2
The third step of the code determines the sensor type of the temperature switch. There are two types: ‘direct mount’
(figure 12) and ‘capillary mount’ (figure 11). See table 4 for the codes of the temperature sensor.
Code Sensor
type
D00 direct
mount
D02 direct
mount
DXX special
size
C02
2 metres capillary
C03
3 metres capillary
C05
5 metres capillary
C10
10 metres capillary
CXX special
length
Table 4
1. If using a thermowell, this should be filled with a heat conducting gel or oil.
2.
At least 3/4 of the length
of the temperature probe (3) should be inserted in the (flowing) medium.
3. When connecting a ‘direct mount’ sensor, the whole switch should be turned, but do not use a wrench on any part
of the switch except the process connection (1). The standard connection thread is ½” NPTM.
4. When connecting a ‘capillary mount’ sensor, first secure the sliding nut (4) (½” NPTM), then the lock nut (5). To
prevent buckling the capillary (6) one should use a large bending radius (at least 5 cm).
3
INSTALLATION OF ENCLOSURE
§3.1 ‘C’-enclosure
IMPORTANT:
Before installing the switch, ensure that the power supply is off.
The setpoint of the switch can be adjusted before installation if so desired, see chapter 5.
See figure 1.
1. Fasten the mounting bracket (1) of the switch to the wall or mounting board.
2. Remove the cover (4 screws).
3. Fit the appropriate cable gland into the electrical conduit connection (4), see §1.2 for the right size and type of the
thread.
4. Connect the electric cable to the terminal block (3) according to the code. See chapter 4.
The wire core may not exceed 2,5 mm
2
.
5. Check that the cable is properly enclosed, and that it is not under tension.
The ‘IP’ weatherproof rating depends on these measures being taken.
6. If necessary, adjust the setpoint using the adjusting nut (2). See chapter 5.
7.
Replace the cover, including the gasket, making sure the screws are tight.
§3.2 ‘Z’-enclosure
See figure 2.
Installation of the ‘Z’-enclosure is identical to the installation of the ‘C’-enclosure. But, as the ‘Z’-enclosure is an Ex-e
certified enclosure, an Ex-e certified cable gland should be used!
The ‘Z’-enclosure is fitted with an external earth terminal (6) and a pressure relief valve (5). Be sure it is not
obstructed.
