Keller LPX Operating Manual

Operating instructions for

the low pressure calibrator (LPX)

Table of contents

View 13

Notes on the operating instructions 14

1. Description of the device 14

2. General safety warnings 15

3. Operating the LPX calibrator 15

4. Description of the functions 15

5. Menu navigation for calibrators 16

6. Commissioning 16

7. Maintenance / disposal 17

8. Software for calibrators 18

Technical data 19

Spare parts and accessories for KELLER pressure calibrators 20

Declaration of conformity 31

View

5

2

1 10 3

1 Port for interface cable (K-104A or K-114A)

(PC connection / RS485)
2 Device base
3 Display
4 SELECT and ENTER buttons
5 Hand pump
6 Vacuum pump
7 Pressure relief valve
8 Fine-tuning valve
9 Pressure connection for test object

(Serto coupler / connection nipple, G 1/4”)
10 Connection for hand and vacuum pumps

(up to -850 mbar)

4

6

7

9

8

13

Notes on the operating instructions

- The operating instructions are in­tended for specialist workers and
trained personnel.

- Before each stage of work, read the
relevant notes and warnings care­fully, and keep to the sequence as
stated.

- Pay particular attention to the sec­tion on ”General safety warnings”.

If you have any problems or questions,
please contact your supplier or
consult KELLER directly.

1. Description of the device

General description

By means of the pressure pumps
supplied with the product, the low­pressure calibrator enables the ge­neration of pressures of -0,85 bar
relative (with the vacuum pump) to
+10 bar relative (with the hand pump).
The measurement technology incor­porated into this device allows ac­curate measurement and documen­tation of the characteristic of a test
object that is connected to it. The
measured pressure progression can
be displayed, evaluated and saved
with a computer monitoring program
(CCS30).
The calibrator is operated with
the two function buttons SELECT
and ENTER, located directly
below the display. The calibrator it­self is powered by a 3,0 V battery, but
power can also be supplied externally
via the K-114A interface converter.
Test objects (transmitters or pressure
switches) must be supplied from an
external source.

Pressure range for the display

The low pressure calibrator has a
factory-set pressure zero point of
0 bar absolute (vacuum). The Zero
function allows any desired pressure
value to be set as the new zero point
reference.
To take relative measurements,
the low pressure calibrator is
zeroed at ambient pressure (

Zero

). To reset the pressure zero

point to absolute pressure, use the

Set

RES Zero function (reset zero).

Commissioning

A pressure-resistant connection for
the test object is required in order to
use the low pressure calibrator. The
pressure connection for the test object
is already screwed to the pressure dis­tributor of the low pressure calibrator
so that it is pressure resistant when it
leaves the factory, and it must not be
dismantled.
Recommended torque for the test ob­ject pressure connection: 10 Nm

IMPORTANT!

Nothing must adhere to the surface of
the test object (no oil, grease, water,

Impurities could pass through the

etc).
adapter to reach the low pressure cali­brator and damage it.

Overpressure

If the pressure exceeds the measuring
range by more than 20%, the measur­ing cell or the mechanism of the low
pressure calibrator may be destroyed.

Recalibration

The recalibration cycle depends on
the conditions of use. Recommended
recalibration cycle: 1 year.

Scope of delivery

Low pressure calibrator

Scope of delivery

- 1 calibrator

- 1 hand pump

- 1 carrying case

- 1 vacuum pump

- 1 hose nipple

- 1 connection nipple, G 1/4”

- 2 sealing rings
(G 1/8” + G 1/4”)

- 1CrNilter

- 1 spare battery, type CR2430
(3,0 V)

- 1 set of operating instructions

- 1 test record (5 points)

- USB interface converter, K-114A

- 1 KELLER software CD

Intended use

The low pressure calibrator (LPX) may
only be used to generate positive or
negative pressure with air. Use of the
calibrator with other media, especially
hydraulic oil, will damage it. The op­erational safety of the device supplied
is guaranteed only if it is used as in­tended. The limit values as stated (see
page 19: ”Technical data”) must never
be exceeded.
Before installing the low pressure cali­brator, check that it is suitable for your
applications.

14

2. General safety warnings

The current national regulations on
accident prevention and workplace
safety must be followed whenever
work is carried out. Internal regula­tions issued by the operator must be
followed, even if they are not men­tioned in these instructions.

Never use the low pressure calibra­tor together with an external pressure
source.

Do not remove any connected compo­nents (e.g. test objects) when the low
pressure calibrator is under pressure.
Open the pressure relief valve before
removing one of the parts.

Only use the adapters and seals that
are available as accessories.

Do not store the calibrator under pres­sure: only store the low pressure cali­brator with the pressure relief valve
open.

Avoid the action of force of any kind
on the low pressure calibrator and its
operating controls.

Do not use low pressure calibrators if
they are damaged or faulty.

Generating negative pressure

Display

(vacuum)

Engage the vacuum pump (6) in the
connection port (10) and lower the

pressure. You can then ne-tune the
pressure by screwing the ne-tuning

valve (8) in or out.

Release pressure

Open the relief valve (7) to reduce the
pressure to an approximate level, or to
vent the low pressure calibrator.

Information about the display

If no pressure can be shown on the dis­play, it will show

OFL(overow)orUFL

4. Description of the functions

Menu navigation

If the selected function or unit is not
activated

by pressing the ENTER
button within 5 seconds, the display
will return to measuring mode without
changing a setting.

(underow).

If pressure outside the device’s
measuring range is applied, the
last valid pressure value that was

measured will ash on the display

(overload warning).

Function
Min. / max. display Shows the peak and trough pressure values

Display

Description

measured thus far.
(Display is shown with reduced resolution)

3. Operating the LPX calibrator

Operating the pressure calibrator is de­scribed starting on page 16.

Connect the test object

You can connect your test object to the
low pressure calibrator via the pressure
connection (9).

Zeroing the device

Engage the hand pump (5) in the con­nection port (10). Open the pressure
relief valve (until the red mark is visible
at most) to release any pressure that
may be present. If the pressure display
does not show zero, perform a zeroing
procedure

(Set Zero)

. Then close the

pressure relief valve.

Pressure generation

You can use the hand pump (5) to make
an approximate setting for the desired
pressure.

Leak measurement Leak mode is used to determine the pressure

Zero the display

Reset
display

Automatic
switch-off function

Select units

change over a dened period, which can be

changed.
(Leak measurement period, factory setting:
10 minutes)

Permanently sets the applied pressure as the new
pressure zero point.

Resets the pressure zero point to the factory set­ting.
(Zero point for vacuum ➞ absolute pressure is
displayed)

(Cont = Continuous) The device switches off

automatically after a dened period (which can

be changed), starting from the last time a button
was pressed. (Switch-off period, factory setting:
15 minutes)

mbar, bar, hPa, kPa, MPa, cmH2O, mH2O, inH2O,
ftH2O, PSI, kp/cm

2

, mmHg, inHg

15

SELECT button

Menu navigation for calibrators

❻❼

The SELECT button positioned on the
front is used to switch the device on,
to select a function and to select the
various pressure units.

5. Menu navigation for calibrators

❶❷

SELECT button

E
N
T
E
R

b
u
t
t
o
n

Resetting peak- and trough pressure

❶

Min. / max. display

❷

Leak measurement

❸

Set zero point permanently

❹

Reset zero point to factory setting

❺

Activate / deactivate switch-off function

❻

Select units

❼

ENTER button

The ENTER button positioned on the
front is used to activate the selected

❹❺

❸

➞ Leak runtime in mm:ss

➞

➞ Pressure unit
➞ Current measured value

➞ Pressure change within

leak runtime

6. Commissioning

Switch the device on

Press the SELECT button to switch the
device on. Initially, the device shows
the pressure range calibrated in the
factory (top) and the software version
(year / week).

Switch the device off

Keep the SELECT button pressed
down until the display shows

16

OFF.

Press the ENTER button to execute
the shutdown.

➞ The settings made previously are
retained when you switch the device
on and off.

Display mode

Display mode is the calibrator’s basic
mode. The upper part of the display
shows the pressure unit and the pres­sure that is currently measured. The
lower part of the display shows the last

function that was used, either the Min./
max. display or the Leak function.

Using the functions

Written descriptions of the individual
functions are given below (in addition
to the diagram above).

Selecting functions

The individual sub-functions are called

from the MANO menu. Keep the

up
SELECT button pressed until

MANO is

shown, and press ENTER to activate.
You can now use SELECT to choose
the function you want, and ENTER to
execute the function. Depending on

the current setting, the rst function

to be shown is either min/max disp or

LEAK disp.

Leak measurement function

Leak mode is used to determine the
pressure change over a dened pe­riod, which can be adjusted. The unit
to be tested must be connected to the
low pressure calibrator on the pressure
side.

Start leak measurement

Activate the
shows
button and

PressENTERtoconrm Leak Start.

The leak measurement starts, and the
display alternates between the current
leak time and the pressure change
measured thus far.

Active leak measurement

During leak measurement, the lower
part of the display alternates each
second between the measurement
time that has now elapsed [mm:ss]
and the pressure change measured
thus far.

MANO menu. The display

Leak dISP. Press the ENTER

then the SELECT button.

➞ Mano mode

ENTER

End leak measurement early

To end an active leak measurement
early, press the ENTER button and
conrm the ”Leak Stop” display by
pressing ENTER.

Leak measurement completed

If the leak measurement time has
elapsed or if the measurement was
manually ended ahead of time,
the display alternates between the
elapsed leak measurement time and
the measured pressure change.

Set leak measurement time

The leak measurement time is preset
to 10 minutes in the factory, and it can
only be changed with the ”Mano Con-

g”software.

(➞ Software for calibrators)

MANO / "Continuous" function

Automatic switch-off function (the de­vice switches off automatically 15 min­utes after a button was last pressed).
Leak measurements are canceled by
the automatic switch-off function if the
measurement time is more than the
switch-off time.

Cont on: Disables the automatic

switch-off function

Cont oFF: Enables the automatic

switch-off function

If the "Continuous" function is en-

Contashesonthedisplay.

abled,

7. Maintenance / disposal

Battery

The pressure calibrator is powered by a
3 V button-cell battery (behind the
display). If the battery is low, the bat­tery symbol on the display
lights up.

Replacing the battery

Please switch the device off. Turn the
display section ring beyond the limit
stop until it is released from the hous­ing section (turn through about 180°).
Open the battery compartment and
change the battery (type CR 2430).

KELLER

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Pressure coupling lter

The low pressure calibrator has a CrNi

lter, 11 x 8 (material DIN 1.4404),
tted behind the pressure coupling

in order to prevent impurities from
penetrating inside it, which could
cause leaks.

Ifthelterisdirtyandpressurecanno

longer be transmitted, replace it with

thesparelterthatisincludedinthe

scope of delivery.

Leak run­time in
mm:ss

➞ Launch Leak

mode by press-

ENTER

ENTER

ing the ENTER
button

➞ Start the leak

measurement
with ENTER

Unit of pressure

➞
➞ Current

measured value

Leak run­time in
mm:ss

Unit of pressure

➞
➞ Current

measured value

CrNi-Filter

➞

➞

Pressure change
within leak
runtime

➞

➞

Pressure change
within leak
runtime

17

Disposal

This product must not be disposed of
as normal household waste at the end
of its useful lifetime. To prevent pos­sible damage to the environment or
to health due to uncontrolled waste

disposal, this product
must be separated
from other waste and
recycled correctly in
order to ensure sus­tainable use of the raw
materials.

8. Software for calibrators

The USB interface converter (K-114A)
enables communication between the
calibrator and a computer. Before
you connect the interface converter
to the computer, install driver K-104
/ K-114 (the software CD is included
in the scope of delivery, K-114A, or
can be downloaded free of charge at
www.keller-druck.com)

Settings on the low pressure

calibrator with the ManoCong

software

Device settings such as the leak
measurement time or the switch-off
time for the low pressure calibrator
can be adjusted using the "ManoCon-

g"software.

Control Center
CCS30

Record measurements with the
CCS30 software

The CCS30 software records the data
measured

by the pressure calibra­tor, and shows them in both graphic
and tabular form. Measured data
can be saved or exported for further
processing. You will nd more in­formation about the software in the
CCS30 manual.

Step-by-step software installation

Install from the CD or from
www.keller-druck.com:

1.) K-104 / K-114 driver

2.) (CCS30) Control Center Series 30

3.)ManoCong(ifdesired)

18

ManoCong

Technical data

Pressure range -0,85…10 bar (others on request)

Overpressure 12 bar

Accuracy, error band

Accuracy, error band

(1)

(10…40 °C) < 0,05 %FS

(1)

(0…50 °C) < 0,1 %FS

Leak rate 10 bar: -50 mbar @ 10 min.

Display resolution 1 mbar

Number of digits on display 5 digits

Measurement interval 0,5 seconds

Interface RS485; the Fischer cable socket on the side fits the K-104A / K-114A

interface converter

Compensated temperature range 0…50 °C

Operating temperature 0…50 °C

Storage temperature -10…60 °C

Air humidity 5…95% relative humidity

Power supply Button-cell battery, type CR2430

Battery lifetime: > 2000 h in continuous operation

Dimensions (L x W x H) 159 x 138 x 148 mm

Degree of protection IP 65

Selectable pressure units bar, mbar, hPa, kPa, MPa, PSI, kp/cm2, cmH2O, mH2O, inH2O, ftH2O,

mmHg, inHg

(1)

including accuracy, temperature coefficients, zero point and range tolerance

19

Spare parts and accessories for KELLER pressure calibrators

Description Article number

Carrying case, empty 309025.0005 x x x

Battery, type CR2430 557005.0001 x x x

Hose nipple 508832.0005 x x

Connecting nipple, G 1/4”

including sealing ring

Y-coupler 307025.0001 x

Test object adapter,

G 1/4”M–G 3/8”F

Test object adapter,

G 1/4”M–G 1/2”F

Sealing ring, G 1/8” 508635.0001 x x

Sealing ring, G 1/4” 508635.0002 x x

CrNilter 307025.2011 x x

508832.0004 x x

506810.0028 x

506810.0013 x

LPX

suitable for

MPX HPX

Illustration

Vacuum pump 309005.0005 x x

Hand pump 309005.0004 x

Fine-tuning valve 309030.0006 x x

Bottle of oil, 0,5 l

(HLP 22 BP hydraulic oil)

K-114A 309010.0075 x x x

20

650505.0005 x

Konformitätserklärung Declaration of Conformity Déclaration de Conformité

Für das folgenden Erzeugnis…

Niederdruckkalibrator
LPX

…wird hiermit bestätigt, dass
es den wesentlichen Schutzan­forderungen entspricht, die in der
Richtlinie des Rates zur Angleichung
der Rechtsvorschriften der Mitglied­staaten über die elektromagne­tische Verträglichkeit (2004/108/EG)
festgelegt sind.

Diese Erklärung gilt für Produkte die­ser Serie, die mit dem CE-Zeichen
versehen und die Bestandteil dieser
Erklärung sind.

Zur Beurteilung der Erzeugnisse hin­sichtlich elektromagnetischer Ver­träglichkeit wurden folgende Normen
heran gezogen.

Diese Erklärung wird verantwortlich
für den Hersteller:

Herewith we declare that the following
product or product range

Low pressure calibrator
LPX

meet the basic requirements for the
electromagnetic compatibility, which are
established in the directive of the
European Community (2004/108/EC).

This declaration is valid for products
of this Series marked with the CE sign
and which are part of this declaration.

As criteria for the electromagnetic
compatibility, the following norm is
applied:

EN 61326-2-3:2006

This declaration is given for the manu­facturer

Nous attestons que le produit ou
gamme de produits :

Calibrateur basse pression
LPX

répondent aux exigences de base en
matière de compatibilité électromag­nétique prévues par la directive de la
Communauté Européenne (2004/108/
CE).

La présente déclaration est valable
pour les produits de cette série, mar­qués avec le sigle CE et faisant partie
intégrante de la présente déclaration.

La norme appliquée pour évaluer la
compatibilité électromagnétique des­dits instruments est la suivante :

La présente déclaration est fournie
pour le fabricant

KELLER AG für Druckmesstechnik, St. Gallerstrasse 119, CH-8404 Winterthur

abgegeben durch die

KELLER GmbH, Schwarzwaldstrasse 17, D-79798 Jestetten

Jestetten, 4. Oktober | October | Octobre 2012

Hannes W. Keller
Geschäftsführender Inhaber | Managing Owner | Président Directeur Général

mit rechtsgültiger Unterschrift | with legally effective signature | dûment autorisé à signer

in full responsibility by

par

KELLER AG für Druckmesstechnik

St.Gallerstrasse119•CH-8404Winterthur
Tel.+41(0)522352525•Fax+41(0)522352500

www.keller-druck.com

November•November•Novembre2012