Intended Use; Scope Of Delivery; Electrical Connections - Bühler technologies NS OM-6 Serie Guía Rápida

NS OM-6x
1 Introduction
This quick guide will assist you in starting up the unit. Follow
the safety notices or injury to health or property damage may
occur. Carefully read the original operating instructions in-
cluding information on maintenance and troubleshooting
prior to startup. These are located on the included CD and on-
line at
www.buehler-technologies.com
Please direct any questions to:
Bühler Technologies GmbH
Harkortstraße 29
40880 Ratingen
Germany
Tel.: +49 (0) 21 02 / 49 89-0
Fax: +49 (0) 21 02 / 49 89-20
These operating instructions are a part of the equipment. The
manufacturer reserves the right to change performance-, spe-
cification- or technical data without prior notice. Please keep
these instructions for future reference.

1.1 Intended Use

The level switches are used to monitor liquid levels in tanks.
They were designed specifically to be installed on tank tops.
The liquid level can be read on the scale. Up to four switching
contacts or a Reed-contact also enable electronic liquid level
monitoring.
Different versions also allow for use in aggressive mediums.
Please note the technical data for the specific intended use,
available material combinations, as well as temperature lim-
its. Please refer to the original operating instructions on the
included CD for details.
WARNING
All device models are solely intended for industrial applica-
tions. They are not safety components. The devices must not
be used if failure or malfunction thereof jeopardises the
safety and health of persons.
Use in explosive areas is prohibited.

1.2 Scope of Delivery

• Level switch
• Product documentation
• Connection/mounting accessories (optional)
2 Safety instructions
The equipment must be installed by a professional familiar
with the safety requirements and risks.
Be sure to observe the safety regulations and generally applic-
able rules of technology relevant for the installation site. Pre-
vent malfunctions and avoid personal injuries and property
damage.
The operator of the system must ensure:
• Safety notices and operating instructions are available
and observed,
• The respective national accident prevention regulations
are observed,
8 Bühler Technologies GmbH
• The permissible data and operational conditions are
maintained,
• Safety guards are used and mandatory maintenance is
performed,
• Legal regulations are observed during disposal,
• compliance with national installation regulations.
DANGER
Toxic, acidic gases/liquids
Protect yourself from toxic, corrosive gasses/liquids when
performing any type of work. Wear appropriate protective
equipment.
3 Transport and storage
Only transport the product inside the original packaging or a
suitable alternative.
The equipment must be protected from moisture and heat
when not in use. It must be stored in a covered, dry, dust-free
room at room temperature.
4 Setup and Connection
Every switch has a display. The sight glass is made from
polycarbonate and mounted to the indicator scale. The indic-
ator has a scale and, as the unit, is made from stainless steel.
The solenoid switches (type MKS) are flush mounted to the in-
dicator scale and are variable. When installing the solenoid
switches on opposite sides, small changes in the liquid level
can also be monitored.
The solenoid switches are available as change-over contact or
simple NC/NO contact. Please refer to the appendix for the
terminal configuration and technical data of the contacts.
Level switch with transducer tube (4 – 20 mA output): If the
level switch is equipped with transducer tube for continuous
liquid level monitoring, the solenoid switches can only be in-
stalled on the left side of the indicator scale. The transducer is
factory set (4 mA = tank empty; 20 mA = tank full) and must
not be changed.
4.1 Installation
The level switches (transmitters) come fully assembled and
can be mounted to the tank using the included screws and
seals. Please be sure the float can move freely and to leave
enough space between the tank wall and add-ons.

4.2 Electrical connections

DANGER
Electric voltage
Risk of electric shock
a) Always disconnect the unit from the mains before per-
forming work.
b) Secure the equipment from accidental restarting.
c) The equipment may only be installed, maintained and
put into operation by instructed, competent personnel.
d) Always observe the applicable safety regulations for the
operating site.
BX100010 ◦ 03/2021