3 INSTALLATION
3.1.3 Installing a wall-mounted version
The pH transmitter in wall-mounted version has 4 fixing holes in the bottom enclosure. Re-
move the white blanking strips and the cover to access to fixing holes 1. Electrical connec-
tions are described in § 3.2.
1 2 3 4
Fig. 3.3 Installation pH transmitter 8205 wall-mounted version
3.2 Electrical connection
3.2.1 General electrical requirements
Do not open and wire the transmitter with the power supply connected.
It is advisable to put security devices on:
Power supply: Fuse (250 mA) and an interrupter
Relay: 3A max. fuse and circuit breaker (depending on application).
Use cables with a temperature limit of 80°C minimum.
For normal operating conditions the measuring signal can be transmitted by a shielded
2
cable of 0.75 mm
The line must not be installed in combination with carrying lines with a higher voltage or
frequency.
If a combined installation cannot be avoided, a minimum space of 30 cm should be
respected.
The cable diameter must be between 6 and 12 mm;
If 2 cables are needed, use the supplied multiway seal and 4-mm diameter cables.
The 12-30 VDC power supply must be filtered and regulated.
Fuse
PE
cross section.
E-10-
PH TRANSMITTER 8205
Switch for power supply
selection 230/115 VAC
5 6 7 8 9 10
L N