WIKA HIF User Manual [en, de, fr]
Operating Instructions
Betriebsanleitung
Mode d´emploi
Magnetic operated float switches Model RSM and HIF
Schwimmer-Magnetschalter Typ RSM und HIF
Interrupteurs magnètiques à flotteur Type RSM et HIF
Magnetic operated float switch
Fig. left: Model RSM, Fig. right: Model HIF
GB
D
F
Operating instructions magnetic operated float switches
GB
Model RSM and HIF Page 3-12
Betriebsanleitung Schwimmer-Magnetschalter
D
Typ RSM und HIF Seite 13-22
Mode d‘emploi interrupteurs magnètiques à flotteur
F
Type RSM et HIF Page 23-33
WIKA Operating instructions Magnetic operated float switches Model RSM and HIF
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Contents
Contents
Contents
1. Functional description 4
2. Area of application 4
3. Assembly 5
4. Electrical connection 6
5. Commissioning / function test 8
6. Maintenance 9
7. Notes 9
8. Technical data 10
9. Protective RC-Modules 11
WARNING!
Instructions for proper installation and use of magnetic
float switches. Disregard may lead to malfunction or destruction of reed contacts.
DANGER!
Instructions to avoid personal or property damage.
GB
ELECTRICAL INSTALLATIONS
Instructions for proper electrical installation.
WIKA Operating instructions magnetic operated float switches Model RSM and HIF
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1. Functional description / 2. Area of application
1. Functional description
Magnetic operated float switches operate according to the float
GB
principle with magnetic transmission. A reed contact built into the
slip pipe (5) or contact pipe (8) is activated by the magnetic field of a
permanent magnet on reaching a preset switching point. The permanent magnet is located in a float (7) which changes its height with
the level of the medium being monitored. The switching state of the
reed contact can be evaluated and processed by a series-connected
control unit.
The number and arrangement of the floats depends on the number
of preset switching points, their contacting function and the distance
apart of the switching points.
2. Area of application
Magnetic operated float switches are used exclusively for level
control and monitoring of liquid media.
The liquids may not be heavily contaminated and should not have
a tendency to crystallize. Make sure that the materials of the switch
(float, slip pipe) which come into contact with the medium being
monitored are suitably resistant.
WIKA Operating instructions Magnetic operated float switches Model RSM and HIF
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3. Assembly
3. Assembly
Versions for vertical installation (Fig. 1)
Install WIKA magnetic operated float switches according to their
model (flange or thread [3])
Use the screws and nuts suitable for the flange for flange models.
Fit a suitable gasket (4) for sealing. Make sure it is installed in the
right position. (max. deviation from the vertical ± 30°)
The float (7) must be removed before installation in openings with a
diameter smaller than the diameter of the float
Mark the position of the set collars (6) before removing
If top and bottom of the floats are not already marked, please do
so now
Replace the float inside the tank after installing the magnetic
operated float switch
Then fix the set collars (6) back in the same position
The number of floats and position of stop rings are dependent on
the switching positions and number of switch points
Versions for horizontal installation (Fig. 2)
Magnetic operated float switches for horizontal operation must be
installed as shown in figure 2.
Use the screws and nuts suitable for the flange for flange models. Fit
a suitable gasket (4) for sealing. Make sure it is installed in the right
position. (The float must be tilted downwards in the unactivated state).
When installing in the union, make sure that the tilting of the float is
not affected.
GB
WIKA Operating instructions magnetic operated float switches Model RSM and HIF
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3. Assembly / 4. Electrical connection
GB
When mounted inside ferromagnetic surroundings the
function could be restrained. This may cause a malfunction
and harm to goods.
The magnetic operated float switch must be mounted
outside ferromagnetic surroundings.
4. Electrical connection
When mounted inside ferromagnetic surroundings the
function could be restrained. This may cause a malfunction
and harm to goods.
The magnetic operated float switch must be mounted
outside ferromagnetic surroundings.
The electrical connection is made according to the wiring diagram
printed on the switch.
(Models with only one normally closed or normally open contact
contain no wiring diagram.)
The cable bushing (2) in the connection enclosure (1) must be sealed.
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4. Electrical connection
Use of magnetic float switches with inductive or capacitive
load may lead to the destruction of the reed switch. This
may cause a malfunction to the control circuitry and harm
to persons or goods.
With inductive load, magnetic switches have to be
connected to a RC Network (acc. to appendix).
With capacitive load, connecting cables longer than
50 m or connection to a PLC with capacitive input circuit,
a 22 Ω resp. 47 Ω (10 VA contacts) resistor is required to be
connected in series to limit current spikes. A 220 Ω resistor
shall be used when connected to an electronic timer.
GB
Overloading the magnetic float switches may lead to
the destruction of the reed switch, which may cause a
malfunction to the control circuitry and harm to persons or
goods. The maximum switch capacity values given in the
chapter "Technical data" and the Technical bulletin must
not be exceeded.
WIKA Operating instructions magnetic operated float switches Model RSM and HIF
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4. Electrical connection / 5. Commissioning / function test
GB
Magnetic float switches with connecting cable including no protective earth may be live under fault
conditions. Touching the housing may cause harm to
persons or even be lethal. These switches must only
be used with protective low voltage acc. to VDE 0100
(f. e. use a WIKA contact protection relay) or have to be
mounted in such way, that the switch is earthed.
5. Commissioning / function test
Switch on the power supply to the connected control unit. Fill the
vessel and check the function of the switching points of the magnetoperated float switch. The function test can also be conducted
manually on the removed switch.
Make sure that the function test does not accidentally set
any processes in motion.
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6. Maintenance / 7. Notes
6. Maintenance
The magnetic operated float switches operate free of maintenance
and wear when used properly.
The switch must be eye-checked within the scope of the necessary
inspections under extreme operating conditions.
7. Notes
The reed contacts must be operated on intrinsically safe circuits when
operating in „e“ areas of zone 1 or 2.
Float switches made of plastic may not be used in the „e“ areas of
zone 1 or 2.
Do not operate float switches in the immediate vicinity of strong
electromagnetic fields (distance away at least 1 m).
The switching points of the magnetic operated float switches cannot
be adjusted.
Magnetic operated float switches can only be used in media to which
the material of the slip pipe and the float is resistant.
The switches may not be exposed to heavy mechanical stresses
(shock, bending, vibrations).
GB
WIKA Operating instructions magnetic operated float switches Model RSM and HIF
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8. Technical data
8. Technical data
Switching behaviour: Norm close / Norm open
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Max. voltage: 250 V AC / DC
Max. current: 2 A AC / 1 A DC
Max. power: 100 VA, cosφ >0,7 / 50 W
Switching behaviour: Change over
Max. voltage: 250 V AC / DC
Max. current: 1 A AC / 0,5 A DC
Max. power: 40 VA, cosφ > 0,7 / 20 W
Magnet operated Mini Float Switches
Switching behaviour: Norm close / Norm open
Max. voltage: 250 V AC / DC
Max. current: 0,5 A AC / 0,25 A DC
Max. power: 10 VA , cosφ > 0,7 / 5 W
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9. Protective RC-Modules
9. Protective RC-Modules
Please use RC-modules according to the table below. Rating of the
switches and supply voltage will determine the model to be used.
Other models might lead to destruction or lower service life of the
reed contacts.
For reed contacts 10-40 VA For reed contacts 40-100 VA
Capa-
citance
0,33 100 24 3/24 0,33 47 24 3/24
0,33 220 48 3/48 0,33 100 48 3/48
0,33 470 115 3/115 0,33 470 115 3/115
0,33 1500 230 3/230 0,33 1000 230 3/230
sistance
µF
Ohm
d = Ø16 ... Ø25 mm
I = 16 ... 58 mm
Re-
VoltageV~ModelACapa-
Wire
citance
µF
Re-
sistance
Ohm
VoltageV~Model
B
GB
WIKA Operating instructions magnetic operated float switches Model RSM and HIF
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