Intended Use; Liquid Level Monitoring; Pressure Equipment Directive Information; Scope Of Delivery - Buhler NS Serie Guía Rápida

NS xx/xx-AM, HD-NS xx-AM
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 the liquid level in fluid
systems. They mount to the outside of the tank and have a
visual display and electric liquid level monitor. Depending on
the model the operating pressure can be between 3 and
360 bar.
The level switches can optionally be equipped with a trans-
ducer tube to allow for continuous electronic liquid level mon-
itoring. Different versions also allow for use in aggressive me-
diums.
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 models are solely intended for industrial applications.
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.
The level switches are not designed for cycling!
Any use outside the technical data and outside the areas of
application specified in these instructions is considered im-
proper use.
1.2 Functionality

1.2.1 Liquid level monitoring

In a number of applications it's beneficial to combine visual
and electrical liquid level monitoring. The display outside the
tank is often most visible. This is where the NS-AM level switch
is used.

1.3 Pressure Equipment Directive information

The level switches are designed, manufactured and tested to
Pressure Equipment Directive 2014/68/EU according to
AD-2000 code.
6 Bühler Technologies GmbH
The actual category of the level switch achieved is printed on
the type plate. Depending on the category, comprehensive
quality assurance is performed according to module H or H1.
HD-NS series level switches include TÜV-approval. Tested to
Pressure Equipment Directive 2014/68/EU (Module G).
Level switches which fall under article 4, section 3 of the Pres-
sure Equipment Directive 2014/68/EU do not bear a CE mark.
The type plate contains the following information:
Bühler Technologies GmbH
Manufacturer address
Harkortstraße 29, D-40880 Ratingen
Item designation NS 25/25 AM-K - SK 661
100035921 020865 001
Item no.
L1 = 1500 mm / Category II
Category per Pressure Equipment Directive
and other product information analogue output 4-20 mA / resolution
max 25 bar / 120 °C
Pressure and temperature limits
READ MANUAL
The operator must always check the resistance of the level
switch materials against the mediums used (materials see
Technical Data).
Based on the resistance to the medium used, HD-NS series
level switches are only approved for fluid group 2 per Pressure
Equipment Directive 2014/68/EU.
The level switches are not designed for cycling.
During pressure testing the level switches are pressurised
with the following test pressure:
Type: NS 10 NS 25
Test 15 bar 38 bar
pres-
sure:

1.4 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,
• 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.
Year of manufacture
Year: 2010
CE mark (Cat. I and up) and
0525
notified body number (cat. II and up)
NS 64 NS 100 NS 250 NS 360
96 bar 150 bar 375 bar 540 bar
BX200001 ◦ 08/2020