89750147 Crouzet USA, 89750147 Datasheet - Page 115

• Manufacturer Part Number: 89750147
• Description: STAINLESS SLEEVE-MILL TEMP PRB
• Manufacturer: Crouzet USA

Specifications of 89750147

• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

For more information www.crouzet.com
Max2
Max1
Min2
Min1
Dimensions
F2N
Connections
F2N
Principles
Un
R
1
2
B
C
D
T1 : Delay on pick-up
T2 : Response time on emersion
T3 : Response time on immersion
T4 : Response time on power-down
L1
L2
L3
L4
3,5
Min 2 Well
Min 1 Tank
P.B.
A1 11
A2 12 14
T1
23
1
2
1
R
C
T2
Min.
2
100
Min.
Max.
Min.
2
1
3
77
Max.
Max. 1
3
3
5
T3
C
5
M
T4
P
2
1
Operating principle
Control of filling a tank at 2 levels (Min1, Max1) with simultaneous emptying control of the well or
supply tank at 2 levels (Min2, Max2) in order to protect the pump from draining.
The principle is based on measurement of the apparent resistance of the liquid between the
submerged probes. To avoid electrolytic phenomena, an AC current runs across the probes.
In certain applications, a slight adjustment of the sensitivity enables the detection of undesirable
elements such as the presence of foam or surface bubbles or the appearance of leakage
impedance between probles (extended line capacity, humidity, etc).
Filling / Emptying combined function
The output relay changes state (de-energises) when the level of liquid in the tank reaches the Max1
proble, with the Min1 probe submerged. It returns to its initial state (reattaches) when the Min1
probe is no longer in contact with the liquid.
When the level of liquid in the well reaches the Min2 probe, the pump stops (relay unstuck.
Protection : prevents the pump from running when empty).
If the well Max2 probe is not submerged on power-up or after a power cut, the device must be
reactivated by pressing the pushbutton (P.B.).
45
Max.
4,2
Min.
4
4
C
B
C
D
E
F
A1 - A2 : Supply voltage
11 - 12 - 14 : Ouput relay (R)
C - Min1 - Max1 : Tank probe inputs
C - Min2 - Max2 : Well or feeder tank probe inputs
Start
Stop
Well or feeder tank
Tank
P.B.
115
4