Liquiphant M/S with electronic insert FEL58 + Nivotester FTL325N
26
Hauser
1 2 3 4
ON
1 2
ON
CH1
CH2
[Ex ia]
5
CH2
CH2
4
3
L
<1.2 mA
H
>2.1 mA
5
1 2 3 4
ON
CH3
2
1
CH3
L
<1.2 mA
H
>2.1 mA
3
1 2 3 4
ON
1
2
3
4
2
1 2
ON
CH1
CH1
1
A0026107
2
Operating and display element, 3-channel Nivotester FTL325N
1
DIL switch for channel 1: error current signal 2.1 mA / 1.2 mA (1), fault on/off position (2)
2
Light emitting diodes (LEDs)
3
Switch for functions: Δs, e.g. pump control (1), two level relays (2), individual channels (3)
4
Light emitting diodes (LEDs)
5
DIL switch for channel 2 and 3: fault on/off position (1/3), error current signal 2.1 mA / 1.2 mA (2/4)
Proof-testing
Check the operativeness and safety of safety functions at appropriate intervals! The operator must
determine the time intervals.
The values and figures in the "Additional safety-related characteristic values" section can be used to
this end, → 5. The check must be carried out in such a way that it is proven that the protective
system functions perfectly in interaction with all components.
Proof-testing can be performed as follows:
• Test sequence A:
Approach the level or remove and immerse in a medium of similar density and viscosity.
• Test sequence B:
Activate simulation by pressing the test button on the Liquiphant or Nivotester
• Test sequence C
Check the switch point under reference operating conditions
NOTICE
Ensuring correct device sealing!
‣
You must also check and ensure that all cover seals and cable entries are sealing correctly.
