M LLET
Füllstandtechnik
GmbH
1.4
Dimensions
Operating instructions
1. Description
1.1 Intended use
The level indicator observes the filling level as a limit switch in silos
and vessels. It can be used as full, demand and empty indicator for
dusty and powdery, granulated and grainy bulk goods with a max.
grain size up to 30 mm and with a bulk density of 0.3 t/m³ ... 2.5 t/m³.
1.2 Function
The bulk goods presses with its weight against the double
membrane. A tappet directly transfers the pressure from the
membranes to the switch. When the bulk goods are decreasing,
pressure is taken off the membranes and the switch will be
interconnected.
1.3 Technical data
Manufacturer
MOLLET
Füllstandtechnik GmbH
Address
Industriepark RIO 103
74706 Osterburken
Name
Membrane level indicator
Type
MFD
Temperature range
-20 °C ... +70 °C
Signal contact
change-over contact, potentialfree
Capacity of the contact
4 A / 250 V AC
Switching voltage
24 V ... 250 V AC
or 12 V ... 125 V DC
Sensitivity
60 g ... 200 g adjustable
Response delay
none
Cable entry
Cable gland M20x1.5
Cable connection
Scrwe M4
Type of protection
IP65
acc. to DIN EN 60529
Overpressure safety
up to 5 bar
Weight
0.73 kg
Maintenance
none
Mounting position
any position
IP
04/13
MFD-BA
©
by MOLLET
01
Safety instructions
1.
The installation,
2.
Comply with the local and statutory rules and regulations and/or the VDE 0100.
3.
Take notice of the temperature specifications at the data plate.
4.
A fuse (with max. 4A) has to be connected in series to the voltage supply.
5.
Protect the signal contact from voltage peaks when inductive loads are connected.
6.
The device may put into operation if it is closed, only.
7.
Switch off the power supply, before opening the device. (touchdangerous voltage)
initial operation and maintenance may be done by a qualified expert with electrical know-how only.
Read and follow these safety instructions first and take notice of the operating instructions.
MOLLET D-74706 Osterburken Tel. +49 6291 6440-0 Fax +49 6291 9846 Operating instructions
T
a
Contact
top
002-0202
154
142
7
Ø 128
Ø 124
3.5
25
49
M20x1.5
1.5 Materials
Housing
GFK (glass-fibre reinforced plastics)
Type
Membrane Mounting ring
MFD-NN
= NBR
Steel, galvanized
MFD-VN
= VITON
Steel, galvanized
MFD-NE
= NBR
Stainless steel 1.4301 / 304
MFD-VE
= VITON
Stainless steel 1.4301 / 304
Membrane level indicator
MFD
