2 maintenance, Maintenance – Metrohm 849 Level Control User Manual
Page 22
4.2 Maintenance
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849 Level Control
Sensor
Binary pattern
Function
Canister
Full level 1 "active"
***1****
Overflow warning at sensor 1
full
***1*1**
Overflow warning at sensor 1
full
Full level 2 ok
**0*****
Overflow monitoring 2: every-
thing ok
Full level 2 "active"
**1*****
Overflow warning at sensor 2
full
**1**1**
Overflow warning at sensor 2
full
Empty level 1 ok
*0******
Empty level monitoring 1: every-
thing ok
Empty level 1 "active"
*1******
Empty level warning at sensor 1
empty
*1***1**
Empty level warning at sensor 1
empty
Empty level 2 ok
0*******
Empty level monitoring 2: every-
thing ok
Empty level 2 "active"
1*******
Empty level warning at sensor 2
empty
1****1**
Empty level warning at sensor 2
empty
4.2
Maintenance
The 849 Level Control is maintenance-free to a large extent.
If one of the stainless steel sensors exhibits traces of corrosion, then the
sensor rod can be rubbed clean with a cloth and a conventional cleaning
agent.