189 © STULZ GmbH – all rights reserved EN/01.2019/G22
ec tower technical manual
14.4 Data sheet for optional water warning system
14.4.1 Data sheet for 72.01 level controller
1
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72.01
• Open Type Device
• Pollution degree 2 Installation Environment
• Maximum Surrounding Air Temperature 50°C
• Use 60 / 75°C copper (Cu) conductor only and wire
ranges No. 14-18-20 AWG, stranded or solid
• Terminal tightening torque of 7.1 Ib.in. (0.8 Nm)
84 mm
58 mm
35 mm
A
B
C
U
N
24VDC
24 VAC (50/ 60 Hz)
(110…125) VAC (50 /60 Hz)
(230…240) VAC (50/60 Hz)
U
min
-U
max
(0.8 -1.1) U
N
U
N
400 VAC (50/ 60 Hz)
U
min
-U
max
(0.9 -1.15)U
N
1CO (SPDT)
16 A 250 VAC
AC1 4000 VA
AC15 (230 VAC) 750 VA
(230 V) 0.55 kW
(–20…+60)°C
IP20
M
1
72.01 - 72.11 LEVEL CONTROL RELAIS
72.01: Adjustable sensitivity (5...150) kΩ - (5...450) kΩ
FRONT VIEW
A = function selector switch
(72.01) ES:Emptying, Run-on time 0,5s
B = LED
C = Setting the response sensitivity
SUITABLE LIQUIDS: City water, Well water, Rainwater, Sea
water, Liquids with low-percentage alcohol, Wine, Milk, Beer,
Coffee, Sewage, Liquids fertilizer
UN-SUITABLE LIQUIDS: Demineralised water, Fuels, Oil,
Liquids with high-percentage alcohol, Liquid gas, Paraffins,
Ethylene glycol, Paint
Accessoires
- Floor water sensor
for reporting of the presence of floor surface
water (072.11)
NOTE
- Maximum length of cable connecting sensor to relay 200 m
(with capacitance of 100 nF/km).
- There is no electrical isolation between electrodes and supply
voltage for the 24 V DC types (72.x1.9.024.0000). Therefore, for
SELV applications it would be necessary to use a SELV (non-
grounded) power supply. In the case of a PELV (grounded) power
supply take care to protect the level control relay against harmful
circulating currents by ensuring that no electrodes are grounded.
However, there is no such problem for the 24 V AC types
(72.x1.8.024.0000) which, by virtue of an internal isolating
transformer, assure reinforced isolation between electrodes and
supply.
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