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 -1...+20 bar and 0...1000 bar are available in accuracy ±0.025% 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").
designed from professionals for professionals
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 LR-Cal LPC 300 features a complete numeric keypad and cursor block, for easy and simple entering of data.
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.
The electronic pressure calibrator (documenting process calibrator) LR-Cal LPC 300 can be operated in three different modes:
Measuring Mode:
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.
Calibration Mode:
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 LR-Cal 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.
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 | |
Resolution | programmable, max. 6 digits + prefix + decimal point | |
Volts measurement | V | 0...1, 0...2, 0...5, 0...10 |
Volts resolution | mV | 0.1 |
Volts accuracy | mV | ±1 |
Milliamps measurement | mA | 4...20, 0...20 |
Milliamps resolution | µA | 1 |
Milliamps accuracy | µA | 5 |
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 temperature | °C | -20...+60 |
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 |
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Dimension | mm | W 125 x H 210 x D 80 |
Weight | g | 850 (without sensor); Reference pressure sensor LR-Cal LPC-S 230 |
Available standard pressure ranges LR-Cal LPC-S
Accuracy ±0.025% FS
Pressure Range [bar] | Kind of pressure |
overpresusre [bar] | burst pressure [bar] |
0...60 | gauge | 120 | 550 |
0...100 | gauge | 200 | 800 |
0...400 | gauge | 800 | 1700 |
0...700 | gauge | 1200 | 2400 |
0...1000 | gauge | 1500 | 3000 |
-1...+20 | gauge | 80 | 96 |
-1...+39 | gauge | 80 | 96 |
Stated accuracies includes linearity, hysteresis and repeatability.
With the software LR-Cal LPC300-Cal you can carry out live calibrations in operating mode "MEASURE" of the calibrator via USB connection on your Windows® computer and generate certificates of calibration.
Furthermore, in operating mode "CALIBRATE" of the calibrator, you can download the stored data to your Windows® PC and generate certificates of calibration. You can also define calibration procedures on your Windows® PC and upload them to the calibrator to be used in operating mode "CALIBRATE".
The layout and content of your certificates of calibration can be edited within MS-Excell®.
The manual for the software LR-Cal LPC300-Cal you find on the DOWNLOADs tab.
System requirements:
In addition you need the following accessoir:
Simple GRATIS software for Windows-PC (no support). The USB-cable order-code LPC300-KAB-USB is needed.
USB driver, is needed for virtual COM port at Windows PCs.