KELLER LPX Low Pressure Calibrator Instruction Manual

KELLER LPX Low Pressure Calibrator

View

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

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.

Description of the device

General description
By means of the pressure pumps supplied with the product, the low-pressure 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, butpower can also be supplied externally via the K-114-A 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 pressurevalue to be set as the new zero point reference. To take relative measurements, the low pressure calibrator is zeroed at ambient pressure (Set Zero). To reset the pressure zero point to absolute pressure, use the 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 dis-tributor 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 ob-ject pressure connection: 10 Nm

IMPORTANT! Nothing must adhere to the surface of the test object (no oil, grease, water, etc). Impurities could pass through the adapter to reach the low pressure cali-brator and damage it.

Proof pressure
If the pressure exceeds the measuring range by more than 20 %, the measur-ing 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

• 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 filter
• 1 spare battery, type CR2430 (3,0 V)
• 1 set of operating instructions
• 1 test record (5 points)
• USB interface converter, K-114-A

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 op-erational safety of the device supplied is guaranteed only if it is used as in-tended. 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.

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.

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 con-nection 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.

• Generating negative pressure (vacuum)
  Engage the vacuum pump (6) in the connection port (10) and lower the pressure. You can then fine-tune the pressure by screwing the fine-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 (overflow) or UFL (underflow). If pressure outside the device’s measuring range is applied, the last valid pressure value that was measured will flash on the display (overload warning).

• Display

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.

• SELECT button
  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.

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

Menu navigation for calibrators

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 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 pres-sure 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 up from the MANO menu. Keep the SELECT button pressed until MANO is shown, and press ENTER to ac-tivate. You can now use SELECT to choose the function you want, and ENTER to execute the function. De-pending on the current setting, the first 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 defined pe-riod, 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 MANO menu. The display shows Leak dISP. Press the ENTER button and then the SELECT button. Press ENTER to confirm 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.

• End leak measurement early
  To end an active leak measurement early, press the ENTER button and confirm 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-fig» 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 enabled, Cont flashes on the display.

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).

• Pressure coupling filter
  The low-pressure calibrator has a CrNi filter, 11 × 8 (material DIN 1.4404), fitted behind the pressure coupling in order to prevent impurities from penetrating inside it, which could cause leaks. If the filter is dirty and pressure can no longer be transmitted, replace it with the spare filter that is included in the scope of delivery.

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.

Software for calibrators

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

Settings on the low pressure calibrator with the ManoConfig 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-fig” software .

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 find more information about the software in the CCS30 manual. Step-by-step software installation
Install from www.keller-druck.com:

1. K-104 / K-114 driver
2. (CCS30) Control Center Series 30
3. ManoConfig (if desired)

Spare parts and accessories for KELLER pressure calibrators

EU Declaration of Conformity

Herewith we declare, that the following product or product range
Low pressure calibrator LPX meet the basic requirements, which are established in the guidelines of the European Community:
Directive EMC 2014/30/EU Directive RoHS 2011/65/EU and Commission Delegated Directive (EU) 2015/863
As criteria, the following norms for this low pressure calibrator LPX are applied:

• EN 61000-6-1:2007
• EN 61000-6-2:2005
• EN 61000-6-3:2011
• EN 61000-6-4:2011
• EN 61326-1:2013
• EN 61326-2-3:2013

This declaration is given for the manu-facturer: KELLER Druckmesstechnik AG, St. Gallerstrasse 119, CH-8404 Winterthur
in full responsibility by: KELLER Gesellschaft für Druckmesstechnik mbH, Schwarzwaldstrasse 17, DE-79798 Jestetten

KELLER Druckmesstechnik AG
St. Gallerstrasse 119 • CH-8404 Winterthur
Tel. +41 52 235 25 25
Fax +41 52 235 25 00
www.keller-druck.com

References

• KELLER Pressure

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