Installation and Maintenance Rules for:
MN-03, MN-03/V
Membrane level gauges MN-03
R
S.a.s. di Guazzetti Giovanni e C.
COSTRUZIONI MECCANICHE ELETTRICHE
Via dell'Industria 12 - 12/A - 42025 CAVRIAGO - RE - Italy
Tel.: 0522/942641 - 0522/941172
www.camlogic.it
e-mail: [email protected]
STANDARD FEATURES
The membrane level gauge
MN-03
is built in compliance with the regulations in force in the European Union and
specifically with:
- Die-cast aluminium casing UNI 5076. IP65 protection.
-
MN-03
with rubber membrane, max. temp. inside storage bin 60°C.
-
MN-03/V
with Viton membrane, max. temp. inside storage bin 80°C.
PACKING
SAFETY RULES
All the appropriate safety precautions must be taken when electrically operated equipment is used, in order to reduce
the risk of fire outbreaks, electric shock and injuries to persons.
The membrane level gauge
MN-03
can be supplied in single packing
multiple packing or palletized. To handle the supply, if palletized, use a
fork-lift truck or transpallet. In the case of single packing, the weight is
under 5 Kg and can be handled manually.
If the level gauge has to be stored for a long time (up to two years at
most), the storage environment must have an ambient temperature of no
less than +5°C with relative humidity no higher than 60%.
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Keep the work zone clean and orderly. Accidents are more likely to occur in untidy areas and environments.
Before beginning to work, make sure that the level gauge is in perfect condition. Damaged or broken parts must be
repaired or replaced by competent personnel authorized by the Manufacturer.
All verifications, inspections, cleaning and maintenance operations, part changes and replacements must be carried out
with the level gauge disconnected.
It is absolutely forbidden for children, unauthorized and/or inexpert persons to touch or use the level gauge.
Make sure that the earthing is efficiently connected when the instrument is installed.
Periodically check to be sure that the cable is in a perfect condition and replace it if any damage is discovered.
This operation must be carried out only by competent and authorized personnel. Only use extension cables of the
Protect the cable against high temperatures, lubrificants and sharp edges. Do not twist or knot the cable.
Do not allow children or unauthorized personnel to touch the cable.
DESCRIPTION
- Normally open contact
- Common contacs
- Normally closed contact
Pic.1
Membrane level gauge
MN-03
operates safely and reliably and are
used to check and automate conveying system with storage silo.
Their operation is based on the transmission of pressure to which
the membrane is subject by a powdery or granular product.
The pressure applied to the membrane activates a microswitch with
switch contacts (Pic. 1). The tension of the membrane, thus the actuation
force of the microswitch, can be adjusted by varying the compression
of the internal spring (Pic. 2).
Pic. 2
The membrane level gauge
MN-03
can be used slanted up to 45°
from the vertical position. Therefore it should be installed on the vertical
walls of the silo or container.
The device is provided with a pressure filter that ensures the right
atmospheric balance inside the casing. The filter allows air from the
outside environment to pass inside the casing, thus preventing the
formation of pressures that could obstruct the movement of the
membrane and, consequently, the operation of the microswitch.
INSTALLATION
The level gauge is mounted on the external wall of the silo by means
of a counterflange whose size correspondes to the dimensions of
the
MN-03
(see REFERENCE FIGURES).
+
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- Use contact capacity: 10 A. a 250 V.c.a.
- Operating temperature: from -20 to +60 °C.
permitted type, and marked.
II 3 D Ex tc IIIC T85°C Dc
