The electronic pressure calibrator LR-Cal LPC 300 is used for high precision calibration of pressure instruments, e.g. pressure gauges, pressure transmitter, digital manometer, pressure switches, overpressure protection valves, etc.
The LR-Cal LPC 300 is a very user-friendly, accurate and compact solution for pressure comparison calibrations. The built-in reference sensor LR-Cal LPC-S is changeable; several pressure ranges can be covered with one LR-Cal LPC 300 unit (up to 10).
All standard pressure ranges between 0...250 mbar (0...4 psi) and 0...1000 bar (0...14500 psi) are available as well as vacuum and absolute pressure ranges in accuracy ±0.025% FS. Furthermore, ranges up to 6000 bar are available with accuracy ±0.1% FS.
The electronic pressure calibrator LR-Cal LPC 300 measures pressure, volts and milliamps and supplies 24 VDC as source for transmitter. Calibration procedures can be pre-defined and used for calibrations on site. The LR-Cal LPC 300 is featured with USB- and RS232-interfaces and is powered by a chargeable Lithium-Ion battery pack (no "memory effect").
The reference pressure sensors LR-Cal LPC-S are equipped with a welded stainless steel membrane, they are suitable for aggressive media, which do not destroy stainless steel 1.4571.
The electronic pressure calibrator (documenting process calibrator) LR-Cal LPC 300 can be operated in three different modes:
First, the operator defines the unit under test (analogue or digital, pressure range, accuracy class, pressure unit, gauge or absolute pressure, gaseous or fluid calibration medium, power supply 24 VDC on or off).
Then, the comparison calibration can be made: The display shows the pressure range of the LR-Cal LPC-S reference sensor, the true pressure measured by the LR-Cal LPC 300, the pressure range of the unit under test, the output signal of unit under test (measured if it is a transmitter, to be entered manually if it is an analogue pressure gauge), deviation in selected pressure unit of unit under test, deviation in percentage of full scale value of unit under test.
With one view the operator sees wether the unit under test is within it's specification (accuracy class) or not - at every test point.
15 different pressure units are available for selection, plus an user-definable pressure unit. The resolution adjustment (decimal point setting) can be made very comfortable.
In this mode, calibration procedures can be pre-defined, incl. management of units under test. One procedure has following data: Same like "Measuring Mode", plut Calibration Number (program no.), Serial number of unit unter test, location number of unit under test, test pressure points (up to 32 for each unit under test), dwell time (seconds) between test pressure points.
Up to 16 units under test with each 32 test points can be managed by the LR-Cal LPC 300 at a time.
Later on, it can be worked on the pre-defined calibration procedures, e.g. on site. The values are saved in the internal memory of the LR-Cal LPC 300 and can be transmitted to a PC via the USB- or the RS232-interface.
Also, in this "Calibration Mode", the operator can see on one view wether the unit under test is within it's specification or not.
With the optional PC software LPC-Cal the calibration data can be downloaded to a Windows-PC and printed out (via MS-Excel).
Pressure Switch Test Mode:
After specification of the unit under test (pressure range, power supply 24 VDC On/Off), the electronic pressure calibrator LR-Cal LPC 300 shows the actual status of the pressure switch.
Settable basic parameters:
Several basic parameters can be entered into the LR-Cal LPC 300, e.g. ambient temperature, fluid level difference between reference and unit under test, Language (English/French/Italian/Spanish/German), Setting of the realtime clock, Setting of the display, Setting of the powersafe function, Indicating battery level, Tara value (offset), Indicating Min/Max values, Setting/indicating alarm values, Digital software filter, USB- and RS232 settings.
Available standard pressure ranges LR-Cal LPC-S
Accuracy ±0.025% FS
|Pressure Range [bar]||Kind of pressure
||overpresusre [bar]||burst pressure [bar]|
|0...0.4||gauge or absolute||2||2.4|
|0...0.6||gauge or absolute||4||4.8|
|0...1||gauge or absolute||5||6|
|0...1.6||gauge or absolute||10||12|
|0...2.5||gauge or absolute||10||12|
|0...4||gauge or absolute||17||20.5|
|0...6||gauge or absolute||35||40|
|0...10||gauge or absolute||35||42|
|0...16||gauge or absolute||80||96|
|0...25||gauge or absolute||80||96|
Available High-Pressure-Ranges LR-Cal LPC-S
Accuracy ±0.1% FS
|Pressure Range [bar]||Kind of pressure||overpressure [bar]||burst pressure [bar]|
Stated accuracies includes linearity, hysteresis and repeatability.
|Overpressure warning||audio visual|
|Temperature compensation||°C||active, 0...50|
|Wetted parts LR-Cal LPC-S||stainless steel, welded membrane|
|Pressure port LR-Cal LPC-S||1/2" BSP male
High pressure above 1000 bar: M16 x 1.5 female, with sealing cone
|Resolution||programmable, max. 6 digits + prefix + decimal point|
|Volts measurement||V||0...1, 0...2, 0...5, 0...10|
|Milliamps measurement||mA||4...20, 0...20|
|Volts sourcing||VDC||24 (min. 20 mA, max. 50 mA), Tolerance ±1V, switch on/off via menu|
|Temperature range||°C||Operating: 0...50; Charging the battery: 0...45|
|Ambient humidity||% r.h.||max. 80, non-condensing|
|Storage humidity||% r.h.||max. 80, non-condensing|
|Grafic display||TFT colour, high resolution|
|Funktions||MEASURE, CALIBRATE, SWITCH TEST, Min- and Max-values (leak test can be carried out), Tara, Min-/Max-Alarm, Filter, Zero set, Powersafe|
|Memory capacity||16 test items with each 32 pressure test points|
|RS232-parameter||4800, 9600 or 11200 baud, selectable|
|Battery||Lithium-Ion with intelligent charging electronic (charging time <6 h, Operating time >8 h with 24V output = On)|
|Mains charger||110...230 VAC 50/60 Hz with EU-/US-/UK-adapters|
|Electr. plugs||Charging plug 9V / 450 mA ±50 mA with metal protection cap
PC-Communikation USB and RS232 with metal protection cap
4 mm measurement plugs for measuring volts and milliamps, sourcing volts and switch-test
|Dimension||mm||W 125 x H 210 x D 80|
|Weight||g||850 (without sensor); Reference pressure sensor LR-Cal LPC-S 230|
After aquisition of calibration data with LR-Cal LPC 300 (in Calibration Mode), the calibration data can be downloaded with this optional Windows-PC software to a Laptop or PC. With MS-Excel the data can be saved or printed out in Calibration Certificate form. This form can be edited to be conform to users requirements (company logo, layout, etc.)
Select on the PC the calibration data (test items) to be transmitted and generate certificates of calibration with MS-Excel.
You can use all features of MS-Excel to adapt and configure the layout of the certificates to your requirements.
Manual for PC-software LPC-Cal: see DOWNLOADs.
Also you need following accessory:
Datasheet and Manual can be downloaded as PDF files. To open PDF files, you need the ADOBE READER. You can get this software free of charge from ADOBE.
Siehe auch: LPP-KIT Pressure Calibration Kits