ENSIM SENSORS ISS 04 Operating Manual page 7

2.7. Calculating Electrode Rod Lenghts
Once you ve decided the Control mode , calculate the rod lenghts and cut them as mentioned following pages.
F1.Level Signaler
ISS-04 probe works as a simple “water level signaler” at this mode.
You must cut the electrode rods simply “ which level you want a signal at.”
Don’t forget :
I-To include the mounting bush or flange height (F) to the desired rod length.
II- The inner diameter of Measuring pot is 60mm at least.(100mm.suggested)
F2.Fill Control + 1 pcs Low Level Alarm + 1 pcs High Level Alarm
The electrod tips 1..4 work as LOW Level Alarm, PUMP-ON, PUMP-OFF and HIGH Level Alarm
respectively. Again, don’t forget to get into account flange heights(F)!.
Generally, the Nominal Water Level (NW, Desired Level) and Low Water level given by the Boiler
Manufacturer. The height of the Measuring Pot may be at any length between 600..900 mm. Once the
NW level is known, this length can be used as center point between Pump-ON and Pump-OFF. (Say, NW
level is 300mm from top of measuring pot-Thickness of flanges excluded- , then:
Le2 = (300 – 40) + F mm (Pump-ON) and
Le3= (300 + 40) + F mm (Pump-OFF).
This means that the fill control dead band is 80mm.
If you want less frequent Pump action, then make bigger the dead band, means use, say, 50mm instead
of 40mm
ISS
04
F=2X(Thickness of flange+Thickness of gasket)
Water Level
Mounting Level
Pump Off
Pump On
Desired Water
Low
Level (NW)
7
Mounting Level
ISS
04
Max. 40 mm(F)
Measuring
Pot
4 4
Level 4
3
Level 3
3
2
2 Level 2
1
1 Level 1
E.Tips
Figure 8
High
Figure 9