8
4.4 Diagnostic function
Output 1 is used as a diagnostic output according to DESINA specification if OU1
= dESI�
• If there is no fault, the output is switched and carries UB+ (if P-n = PnP) or UB-
(if P-n = nPn)�
• In case of malfunctions the output becomes inactive� The following
malfunctions are detected:
-undervoltage (starting with 18V); overvoltage (starting with 33V);
-temperature at the process connection too high (> 150°C) / too low (< -30°C);
-intrinsic temperature of the unit too high (> 100°C) / too low (< -30°C);
-RAM fault�
5 Installation
Ensure that no pressure is applied to the installation while mounting or
removing the sensor� Please note: Display „0%“ does not mean that the
system is free of pressure!
Horizontal mounting recommended for high medium temperatures�
►
Screw the sensor into a G ¾
process fitting�
►
Tighten the sensor with a spanner
until you can feel the end stop�
You can replace the Viton O-ring (B)
by the supplied EPDM O-ring�
A = freely rotatable housing
The unit is adaptable for various G ¾ process fittings� G ¾ process adapters to be
ordered separately as accessories�