Ametek JOFRA HPC400 Reference Manual
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Ametek JOFRA HPC400 Reference Manual

Ametek JOFRA HPC400 Reference Manual

Handheld pressure calibrator
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Reference Manual
Handheld Pressure Calibrator
JOFRA HPC400
©Copyright 2009 AMETEK Denmark A/S
...because calibration is
a matter of confidence

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Summary of Contents for Ametek JOFRA HPC400

  • Page 1 Reference Manual Handheld Pressure Calibrator JOFRA HPC400 ©Copyright 2009 AMETEK Denmark A/S ...because calibration is a matter of confidence...

  • Page 2: Table Of Contents

    1.1 Contacting AMETEK ........

  • Page 3: Reference Manual

    1. Introduction The JOFRA HPC400 is an accurate, full function pressure calibrator. The calibrator includes the following features and functions: • Large graphical LCD display. Intuitive menu system for easy operation of the large number of useful and handy functions and features.

  • Page 4: Safety Information

    1.3 Safety information Symbols Used The following table lists the International Electrical Symbols. Some or all of these symbols may be used on the instrument or in this manual. Symbol Description AC (Alternating Current) AC-DC Battery CE Complies with European Union Directives Double Insulated Electric Shock Fuse...
  • Page 5 The following definitions apply to the terms “Warning” and “Caution”. • “Warning” identifies conditions and actions that may pose hazards to the user. • “Caution” identifies conditions and actions that may damage the instrument being used. Use the calibrator only as specified in this manual, otherwise injury and damage to the calibrator may occur.
  • Page 6 • To avoid false readings, which could lead to possible electric shock or personal injury, replace the battery as soon as the battery indicator appears Caution To avoid possible damage to calibrator or to equipment under test: • Use the proper jacks, function, and range for your measurement application.

  • Page 7: Calibrator Interface

    2. Calibrator Interface Figure 1 shows the location of the input and output connections on the calibrator, while Table 1 describes their use. Figure 1. Input/Output Terminals Table 1: Input and Output Terminals Name Description 1, 2 Input Terminals These terminals are used to measure current, voltage and a contact closure for switch test.
  • Page 8 Figure 2. Keypad Table 2. Key Functions Name Function Function Keys These keys are used in various ways, primarily to configure the calibrator ON/OFF Key This key is used to turn the calibrator on and off ZERO Key This key is used to zero pressure measurements Backlight Key This key is used to turn the backlight on...

  • Page 9: Calibrator Display

    2.1 Calibrator Display The Calibrator Display consists of two regions: The menu bar (No. 5 on Figure 3, located along the bottom of the screen) is used to access a menu system. The main display (No. 1 on Figure 3) consists of up to three process measurement sub-regions.
  • Page 10 2.1.1.2 Setting Current Display Parameters To set the parameters of the current display use the CONFIG option to get to the Display Configuration Menu. Here the SELECT option will toggle through the choices for each parameter. The first parameter is MODE. Since voltage, current and switch test modes all use the same jacks, two of these functions cannot be used concurrently.

  • Page 11: Using The Backlight

    Table 4 Mode Concurrency CURRENT DISPLAY P[1] P[1] Volts Loop P[1] P[1]ST mA Loop Volts 2.1.1.3 Accessing Other Menus Use the MORE option on the Main Menu to access the other menu functions. 2.2 Using the Backlight The backlight is controlled by the dedicated backlight key. It toggles on and off when the key is pressed;...

  • Page 12: Menu Controlled Functions

    2.4 Menu Controlled Functions There are 10 'sub-main' menus that can be accessed through the MORE option of the Main Menu. A 'sub-main' menu contains three options. The first option is unique to the function. The second and third options of a 'sub- main' menu are always the same.
  • Page 13 2.4.01 MIN MAX hold The JOFRA HPC400 Pressure Calibrators have a min/max feature for capturing the minimum and maximum values of any displayed parameter. To use the MIN / Max storage function proceed as follows: 1. With the calibrator turned on and operating press the F3 key to activate the MORE menu option.
  • Page 14 2.4.02 Setting the Display Contrast 1. With the calibrator turned on and operating press the F3 key to activate the MORE menu option. Press the NEXT button until CONTRAST appears in the left text field, now press the F1 key to activate the contrast adjustment function.
  • Page 15 If SAVE or RECALL is selected use the cursor keys to select the set-up location. Then use the save option to store the current set-up into the selected location or the recall option to recall the set-up stored in the selected location.
  • Page 16 2.4.07 Low resolution function. Due to the high accuracy of the JOFRA HPC400 the measured values are displayed with many digits, this might be an disadvantage in some cases, therefore the HPC has a low resolution function. The function takes away the last digit.
  • Page 17 3. Pressing DONE returns to main menu. 2.4.08 Setting display Light-off Parameters The calibrator will automatically shut-off the display back light after a selected number of minutes. To change parameters proceed as follows: 1. With the calibrator turned on and operating press the F3 key to activate the MORE menu option.
  • Page 18 2.4.09 Switching HART resistor on or off. The calibrator has a built in 250 ohms serial "HART" resistor, to prevent communication errors on live HART networks, while calibrating 4-20 mA output from pressure transmitters. The resistor is switched into the loop, as a serial resistor.

  • Page 19: Measuring Pressure

    3. Measuring Pressure To measure pressure, connect the calibrator using an appropriate fitting. Choose a pressure setting for the display being used. The calibrator is equipped with one or two internal sensors and many optional external sensors (JOFRA APMs) are available. Be sure to choose the sensor based on working pressures and accuracy.

  • Page 20: Media Compatibility

    Important NOTE: To ensure accuracy of the calibrator it is critical to zero the calibrator before a device is calibrated. 3.1 Media Compatibility The calibrator utilizes a media isolated sensor to prevent sensor contamination. Whenever possible clean, dry air is the media of choice. If that is not always possible, make sure that the media is compatible with Nickel Plated Brass and 316 Stainless Steel.

  • Page 21: Measuring Voltage

    5. Measuring Voltage To measure voltage use the input terminals on the top of the calibrator. Select the Volts function on one of the displays. The calibrator can measure up to 30V. Note: The display will indicate "OL" when the measured voltage exceeds the nominal range of voltage measurement (30 V).
  • Page 22 To perform a switch test, follow these steps: 1. Change the setup to Setup 4 (default switch test). Setup 4: The upper display is set to [P1] ST, all other displays are off. 2. Connect the calibrator to the switch using the pressure switch terminals. The polarity of the terminals does not matter.
  • Page 23 9. Press the "NEW TEST" option to clear the data and perform another test. 10. Press the "DONE" option to end the test and return to the standard pressure setting. Important NOTE: The following example uses a normally closed switch. The basic procedure is still the same for a normally open switch, the display will just read "OPEN"...

  • Page 24: Calibrating Transmitters

    7. Calibrating Transmitters 7.1 Using the mA Input Function The mA input function allows the user to read back the 4-20 mA output from the device being calibrated. This can be done in one of two ways. 1) Passively - Where the device under test directly generates 4-20 mA and can be read by the calibrator.

  • Page 25: Minimum And Maximum Storage Capability

    Figure 9. 8. Minimum and Maximum Storage Capability The JOFRA HPC400 Pressure Calibrators have a min/max feature for capturing the minimum and maximum values of any displayed parameter. The min/max function can be accessed by stepping through the menu options until "min/max" is shown on the display above the F1 key. At this time, pressing the F1 key will toggle the display through the min/max values that are stored in the min/max registers.

  • Page 26: Factory Setups

    9. Factory Setups The Calibrator is loaded with five factory setups. These setups are shown below. Setup 1: The upper display is set to [P1] mode and the middle is set to mA, lower is off. Setup 2: The upper display is set to [P1] mode and the middle is set to mA, lower is off.
  • Page 27 Setup 4: The upper display is set to [P1] mode and the middle is set to [VOLTS], lower is off. Setup 5: The lower display is set to [P1] switch test, the other displays are off.

  • Page 28: Specifications

    10. Specifications (18 °C to 28 °C unless otherwise noted.) General Instrument Setup Recall 5; last used on power-up Environmental Operating Temperature -10 °C to +50 °C Storage Temperature -20 °C to +60 °C Ingress Protection IP54 Power Requirements 6.0 VDC Battery Four (4) standard AA cells Battery Life...
  • Page 29 Ranges Compound: -1 to 2 bar (-14 to 30 psi) -1 to 7 bar (-14 to 100 psi) -1 to 20 bar (-14 to 300 psi) 0 to 24.000 mA Volts 0 to 30.000 VDC Engineering Units psi, bar, mbar, kPa, MPa, kg/cm2, mmH2O @ 4°C, mmH2O @ 20°C, cmH2O @ 4°C, cmH2O @ 20°C, inH2O @ 4°C, inH2O @ 20°C, inH2O @ 60°F, mmHg @ 0°C, inHg @ 0°C...

  • Page 30: Maintenance

    11.1 Replacing Batteries Replace batteries as soon as the battery indicator turns on to avoid false measurements. If the batteries discharge too deeply the JOFRA HPC400 will automatically shut down to avoid battery leakage. Note: Use only AA size alkaline batteries or optional rechargeable battery pack.
  • Page 31 Appendix X...
  • Page 33 AMETEK JOFRA™ HPC400 Ranges and Resolutions Range (Bar) Burst Pressure (Bar) Proof Pressure (Bar) Static Pressure (Bar) Range (PSI) Burst Pressure (PSI) 1000 2000 Proof Pressure (PSI) Static Pressure (PSI) 30.000 100.00 300.00 0.06894757 2.0684 6.8947 20.684 mbar 68.94757 2068.4 6894.8...
  • Page 34 AMETEK GmbH (Germany) Tel: +49 2159 9136 510 • info.mct-de@ametek.de Information in this document is subject to change without notice. AMETEK Calibration Instruments (UK) ©2009, by AMETEK, Inc., www.ametek.com. All rights reserved. Tel: +44 (0) 1243 833 302 • jofra@ametek.co.uk...

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