Ametek JOFRA HPC400 User manual

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

HPC400
Reference Manual
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
1.1 Contacting AMETEK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
1.2 Standard Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
1.3 Safety information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
2. Calibrator Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
2.1 Calibrator Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
2.2 Using the Backlight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
2.3 Using the Zero Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
2.4 Menu Controlled Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
3. Measuring Pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
3.1 Media Compatibility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
4. Measuring Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
5. Measuring Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
6. Performing a Pressure Switch Test . . . . . . . . . . . . . . . . . . . . . . . . .19
7. Calibrating Transmitters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
7.1 Using the mA Input Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
7.2 Calibrating a Pressure-to-Current Transmitter . . . . . . . . . . . . . . . . . . . .22
8. Minimum and Maximum Storage Capability . . . . . . . . . . . . . . . . . .23
9. Factory Setups . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
10. Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26
11. Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28
11.1 Replacing Batteries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28
11.2 Cleaning the Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28
11.3 Service Center Calibration or Repair . . . . . . . . . . . . . . . . . . . . . . . . .28

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.
• Switch test functionality uses a high speed pressure update rate for superior
performance and repeatability.
• Current measurement, with or without 24 volt loop power.
• Voltage measurement capability.
• The JOFRA HPC400 is well suited for various applications including
calibration of gauges, pressure switches, safety valves, and P/I transmitters.
• The HPC400 is available in three pressure ranges, 2, 7 or 20 bar compound.
Please see pressure range/accuracy table for further details (Page 28).
• Vacuum is supported in all pressure ranges
Read this manual carefully before using the instrument and make
sure that all safety instructions and warnings are observed.
1.1 Contacting AMETEK/JOFRA
US, Canada, Latin America AMETEK M&CT 1-800-527-9999
Europe, Africa, Middle East AMETEK Denmark A/S + 45 4816 8000
Asia AMETEK Singapore Pte. Ltd.
At + 65 (64) 842 388
1.2 Standard Equipment
Inspect the unit carefully upon receipt. Save packing carton in case reshipment
is necessary. If there appears to be any damage, equipment missing or if there
are any questions about the unit, contact AMETEK.
Check to see if your calibrator is complete. It should include:
• HPC400 Calibrator • Reference Manual
• Test Leads • Pressure Fittings
• Calibration Certificate
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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
DC
Double Insulated
Electric Shock
Fuse
PE Ground
Hot Surface (Burn Hazard)
Read the User’s Manual (Important Information)
Off
On
Canadian Standards Association

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.
Warning
To avoid possible electric shock or personal injury:
• Do not apply more than the rated voltage. See specifications for supported
ranges.
• Follow all equipment safety procedures.
• Never touch the probe to a voltage source when the test leads are
plugged into the current terminals.
• Do not use the calibrator if it is damaged. Before you use the calibrator,
inspect the case. Look for cracks or missing plastic. Pay particular
attention to the insulation surrounding the connectors.
• Select the proper function and range for your measurement.
• Make sure the battery cover is closed and latched before you operate the
calibrator.
• Remove test leads from the calibrator before you open the battery door.
• Inspect the test leads for damaged insulation or exposed metal. Check
test leads continuity. Replace damaged test leads before you use the
calibrator.
• When using the probes, keep your fingers away from the probe contacts.
Keep your fingers behind the finger guards on the probes.
• Connect the common test lead before you connect the live test lead.
When you disconnect test leads, disconnect the live test lead first.
• Do not use the calibrator if it operates abnormally. Protection may be
impaired. When in doubt, have the calibrator serviced.
• Do not operate the calibrator around explosive gas, vapor, or dust.
• When measuring pressure, make sure the process pressure line is shut off
and depressurized before you connect it or disconnect it from the
calibrator.
• Disconnect test leads before changing to another measure or source
function.
• When servicing the calibrator, use only specified replacement parts.
3
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• 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.
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2. Calibrator Interface
Figure 1 shows the location of the input and output connections on the
calibrator, while Table 1 describes their use.
Table 1: Input and Output Terminals
No. Name Description
1, 2 Input Terminals These terminals are used to measure
current, voltage and a contact closure for
switch test.
3 P1 Pressure Port This is the connection for the internal sensor
[P1]
Figure 2 shows the location of the keys on the calibrator. Table 2 lists the
functions of each key.
5
Figure 1. Input/Output Terminals

Table 2. Key Functions
No. Name Function
1 Function Keys These keys are used in various ways,
primarily to configure the calibrator
2 ON/OFF Key This key is used to turn the calibrator on
and off
3 ZERO Key This key is used to zero pressure
measurements
4 Backlight Key This key is used to turn the backlight on
and off
5 Cursor Keys This key is for setting user inputed values
Note: When the calibrator is turned on by pressing the ON/OFF key, it will go
through a short startup self-check routine. During that routine, the display
shows the current firmware revision level, auto shutdown status and the ranges
of the internal pressure sensors. The calibrator requires a maximum of 5 min-
utes warm-up to rated accuracy. Large changes in ambient temperature may
require a longer warm-up period. See section 2.3 for instructions on zeroing the
pressure sensor displays. Pressure ranges should be zeroed each time the cali-
brator is started.
6
Figure 2. Keypad

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. These sub-regions will henceforth be referred to
as the UPPER, MIDDLE and LOWER displays. Figure 3 shows the location of
the different display fields while table 3 describes them.
Figure 3. Display
Table 3: Display Functions
No. Name Description
1 Primary Parameters Indicates what is being measured.
2 Span Indicator Indicates the percent of the 4 to 20 mA
span. (For mA and mA Loop functions only)
3 Pressure Units Indicates one of 15 pressure units available
for display.
4 Units Indicates the unit of measure for the display.
5 Menu bar Access to menu systems
2.1.1 Main Menu Functionality
There are three options on the Main Menu, CONFIG, {current display} and
MORE. The Main Menu is home for the menu display.
Current Display
2.1.1.1 Setting the Current Display
The current display is indicated by the center option on the Main Menu,
pressing the F2 key will toggle the current display. 7

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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.
The ability to select certain functions is limited based on what is already
selected in another active display. The NEXT option is used to change to the
second parameter. Only Pressure mode has a second parameter. Pressures
can be read in 15 engineering units.
With a single display the following modes are available:
P[1] = Pressure on left side sensor.
P[1] ST = Switch Test with left side sensor.
mA = Milliamps measure without loop power.
mA LOOP = Milliamps measure with loop power.
VOLTS = Voltage Measure.
The following table shows which functions are available concurrently.
An X in a column indicates that the mode in the current display will not be
available for selection if the mode in that row is in use in any other active
display.