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Level Limit Switch
nivotester FTC 421
Quick Installation Guide
•
Switch not suitable for use with
probes operating in explosion
hazardous areas.
•
Do not install if your power
supply does not tally with that
quoted on the rating plate.
•
First time users please consult
the "Installation and Operating
Instructions", BA 021, before
attempting to install.
Endress
Electronic Insert Wiring
Wire Nivotester
to EC 61 Z insert
with screened
installation cable
10 9 8
Nivotester
FTC 421
Product
Tendency to
conductive build-up
Dry bulk solids
low
Moist bulk solids
medium
Water-containing
dilute: low
liquids
pasty, sticky: high
Sludge
very high
+
Hauser
Ground probe
head to Terminal 6
If conductive built-up
is likely, short-circuit
Terminals 1 and 2
Bridge at
Terminals 1-2
no
no
dilute: no
pasty, sticky: yes
yes
Nivotester Wiring
Select Failsafe mode
No bridge 12-13: Minimum
Bridge 12-13: Maximum
1
Connect power to
Terminals 1, 2, 3.
Switch off first!
Adjustment
•
Calibration for uncovered probe
– for other possibilities, see BA 021
Switch 2:
set delay mode
Set switching
1
delay 0...20 s.
Check function
2
Adjuster 1: –> 0. Turn slowly clockwise:
For minimum: When red LED lights,
turn up another half division.
For maximum: When red LED goes out,
turn up another half division.
Range
1
I
1
II
III
1
Connect Terminals
8, 9, 10 to electronic
insert EC 61 Z,
see below
Green LED lights
when unit operates
Red LED lights
when relay
de-energised
Connect alarm, relay,
hooter etc.
to Terminals 4, 5, 6.
Ratings see BA 021
Check that green
LED is lit
Switch 1: –> Range I,
Adjuster 1: 0 –> 10
If red LED changes
status –>
,
otherwise –>
at next range setting
Delay
after probe covered
2
after probe uncovered
2
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