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www.barksdale.de 

Operating Manual 

Hydrostatic BLP1 

Barksdale GmbH 
Dorn-Assenheimer Str. 27 
D – 61203 Reichelsheim 
Germany 

Tel.: +49 (0) 60 35 / 949 -0 
Fax: +49 (0) 60 35 / 949 111 

 

 

The addresses of our distribution partners are listed on our 
homepage  www.barksdale.de. It is possible to download 
data sheets, operating manuals, and certificates, as well. 

1. General information 

1.1 Information on the operating manual 

This operating manual contains important information on 
proper usage of the device. Read this operating manual 
carefully before installing and starting up the pressure 
measuring device. 

Adhere to the safety notes and operating instructions which 
are given in the operating manual. Additionally applicable 
regulations regarding occupational safety, accident preven-
tion as well as national installation standards and engineer-
ing rules must be complied with! 

This operating manual is part of the device, must be kept 
nearest its location, always accessible to all employees. 

This operating manual is copyrighted. The contents of this 
operating manual reflect the version available at the time of 
printing. It has been issued to our best knowledge. However, 
errors may have occurred. Barksdale GmbH is not liable for 
any incorrect statements and their effects. 

– Technical modifications reserved – 

1.2 Symbols used 

 

DANGER! – dangerous situation, which may result in 
death or serious injuries 

 

WARNING! – potentially dangerous situation, which 
may result in death or serious injuries 

 

CAUTION! – potentially dangerous situation, which may 
result in minor injuries 

 

!

 

CAUTION! – potentially dangerous situation, which may 
result in physical damage  

 

NOTE – tips and information to ensure a failure-free 
operation 

1.3 Target group 

 

WARNING! To avoid operator hazards and damages of 
the device, the following instructions have to be worked 
out by qualified technical personnel. 

1.4 Limitation of liability 

By non-observance of the operating manual, inappropriate 
use, modification or damage, no liability is assumed and 
warranty claims will be excluded. 

1.5 Intended use 

-  The hydrostatic probes BLP1 have been designed es-

pecially for shipbuilding and offshore applications with 
rough environmental and operation conditions. The 
probes are suitable for level measurement of fluids or 
pasty media in open tanks, containers, or reservoirs. As 
medium all fluids can be used which are compatible with 
the materials of housing, sealing and cable. Based on a 
rugged and reliable capacitive ceramic sensor the probe 
is qualified for measuring small filling heights with high 
accuracy. Typical areas of use are ballast tanks, fuel 
and oil tanks as well as ser-vice and waste water tanks. 
The probes as standard complies with the requirements 
of Germanischer Lloyd (GL) and Det Norske Veritas 
(DNV). The certificates are available for download on 
our homepage: 
http://www.barksdale.de/en/download/certificates 

-  It is the operator's responsibility to check and verify the 

suitability of the device for the intended application. If 
any doubts remain, please contact our sales department 
in order to ensure proper usage. Barksdale GmbH is not 
liable for any incorrect selections and their effects! 

-  The hydrostatic probe has to be used according to the 

area of application specified above! In addition it has to 
be ensured, that this medium is compatible with the me-
dia wetted parts. 

-  The technical data listed in the current data sheet are 

engaging and must be complied with. If the data sheet is 
not available, please order or download it from our 
homepage. (http://www.barksdale.de/en/download/data-
sheets) 

 

WARNING! – Danger through improper usage! 

1.6 Package contents 

Please verify that all listed parts are undamaged included in 
the delivery and check for consistency specified in your 
order: 

- hydrostatic 

probe 

- mounting 

instructions 

2. Product identification 

The device can be identified by its manufacturing label. It 
provides the most important data. By the ordering code the 
product can be clearly identified. 

!

 

The manufacturing label must not be removed from the 
device! 

3. Mechanical installation 

3.1 Mounting and safety instructions 

 

WARNING! Install the device only when depressurized 
and currentless! 

 

WARNING! This device may only be installed by 
qualified technical personnel who has read and under-
stood the operating manual! 

!

 

Handle this high-sensitive electronic precision 
measuring device with care, both in packed and 
unpacked condition! 

!

 

There are no modifications/changes to be made on the 
device.  

!

 

Do not throw the package/device! 

!

 

To avoid damaging the diaphragm, remove packaging 
and possibly protective cap directly before starting 
assembly. The possibly delivered protective cap has to 
be stored! Place this protective cap on the pressure port 
again immediately after disassembling. 

!

 

Handle the unprotected diaphragm very carefully - it is 
very sensitive and may be easily damaged. 

!

 

Do not use any force when installing the device to 
prevent damage of the device and the plant! 

!

 

When placing the probe into operation or after mainte-
nance work, the probe has to be submerged slowly into 
the medium! A rough immersion into the medium can 
damage or destroy the diaphragm. 

!

 

For installations outdoor and in damp areas following 
these instructions: 

-  Choose an assembly position, which allows the 

flow-off of splashed water and condensation.  

-  Turn the outgoing cable downwards. If the cable 

has to be turned upwards, then point it downward 
so the moisture can drain. 

-  Install the device in such a way that it is protected 

from direct solar irradiation. Direct solar irradiation 
can lead to the permissible operating temperature 
being overstepped in the worst case. By this the 
operability of the device can be affected or dam-
aged. If the internal pressure increases due to so-
lar irradiation, measurement errors may be caused. 

 

Take note for screw-in and flange transmitter that no 
assembly stress occurs at the pressure port, since this 
may cause a shifting of the characteristic curve.  

 

In hydraulic systems, position the device in such a way 
that the pressure port points upward (ventilation). 

 

Provide a cooling line when using the device in steam 
piping. 

 

If installing the device outdoor and there is any danger 
of lightning or overpressure we suggest putting a 
overpressure protection unit between the supply/switch 
cabinet and the device to prevent damage. 

3.2 General installation steps 

-  Carefully remove the pressure measuring device from 

the package and dispose of the package properly. 

-  Go ahead as detailed in the specific instructions below.  

3.3 Installation steps for probe 

-  Install the device according to your demands. 

 

Usually, the probe is delivered without mounting acces-
sories. But Barksdale GmbH offers different accessories 
on request e.g. mounting clamp, terminal clamp or 
mounting flange. 

3.4 Installation steps for flange transmitter 

-  Please ensure that the mounting thread is clean and 

free of damage. 

-  Check to ensure that the O-ring fits properly in the 

groove. 

-  Screw in the mounting thread of the transmitter in the 

transmitter flange, by hand. 

-  Next, tighten it by an open-end wrench. (approx. 25 Nm)  

-  Install the flange according to your demands. 

 

If a new transmitter flange is needed, it can be ordered 
from Barksdale GmbH.  

3.5 Installation steps for screw-in transmitter 

-  Please ensure that the mounting thread is clean and 

free of damage. 

-  Check to ensure that the O-ring fits properly in the 

groove. 

-  Ensure that the sealing surface of the taking part e.g. 

welding socket is perfectly smooth and clean. 

-  Screw the device in the corresponding thread by hand. 

-  Next, tighten it by an open-end wrench. (approx. 25 Nm) 

3.6 Removing the protection cap (for probe) 

For the protection of the diaphragm, some of the probes 
have a plugged-on protection cap. If the device shall be used 
in high-viscosity media such as sludge, a removal of the cap 
before start-up is necessary. Thus, the sensor becomes 
flush and the medium will attain quickly to the diaphragm. 

 

If it is necessary for your application to remove the 
protection cap, this has to be done with utmost care. To 
prevent a damage of the diaphragm, please follow the 
instructions below. 

Removal by hand 

-  Hold the probe in a way that the protection cap points 

upwards. 

-  Hold the probe with one hand on the sensor section (1). 

-  Remove the protection cap (2) with the other hand. 

Art. no.: 923-1760

 

Index ---, 01.03.2010

 

 

 

Specifications are subject to changes without notice!

 

 

 

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