SIGRIST TurBiScat 2 Ex, Brief Instructions

Page: 26 / 176

Servicing
26 / 176 SIGRIST-PHOTOMETER AG
The servicing interval reflects normal use.
The servicing interval is based on experience and is intended as a recommendation. It increases the fail-safety of
the system. The recommended maintenance cycle does not provide information about the durability of the compo-
nents.
Depending on the operating and ambient conditions, the interval must be shortened accordingly.
When Who What Why
Annual/
"Humidity"
warning Operator Replace desiccant and seals Maintaining measuring accuracy
and protecting the electronics
Annual Operator Clean sensor head Maintaining measuring accuracy
Annual Operator Check calibration Maintaining measuring accuracy
Annual Operator Replace VARINLINE® housing seals or
flange connection seals Tightness at process line
Every 10 years Service-
technician Replace photometer battery
NOTICE!
It is mandatory to use lithium batter-
ies type CR1025 from the manufac-
turer "renata batteries".
Function servicing
8.2 Replace desiccant
NOTE
Condensation inside the electronics
If cold medium flows through the process line, humidity can condense when the process line is opened and dam-
age the electronics.
u
Only open the photometer when the medium temperature is ≥ room temperature.
If the desiccant needs to be replaced frequently, have the tightness checked by a service technician.
u DANGER!
Explosion hazard!
Disconnect the service
voltage and disconnect all conductors.
u Loosen Allen screw (5) .
u Remove the protective sleeve (4) from the
clamp ring (3) .
u Loosen and remove the clamp ring (3) .
u Remove basic unit (1) from the sensor head.
u
Replace seal (6) .
u
Replace desiccant (7) .
u Reassemble the device immediately in re-
verse order.
u Note the alignment of the groove with
pin
(2) .
1 3 4
5
6
2
7