Crystal XP2i Manuel utilisateur

XP2iOperation Manual

for XP2i Digital Test Gauge (Standard and Dual-Display(DD))

Contents

Overview ............................................................. 1

Introduction .......................................................... 1

Operating Instructions ................................................. 2

Functions ............................................................ 3

Data Logging with DataLoggerXP .......................... 10

What is DataLoggerXP? ............................................... 10

Installing the Software ................................................ 12

Authorizing a Gauge .................................................. 12

DataLoggerXP Software Operation .................................... 13

XP2i DataLoggerXP Gauge Operation .................................. 18

Excel Templates ...................................................... 22

Enclosure ............................................................ 23

Serial Numbers ....................................................... 24

Speciﬁcations ...................................................... 25

Power ................................................................ 27

Pressure Ranges, Display Scales, & Resolution .......................... 28

Part Numbering System ............................................... 28

Safety & Certiﬁcations .......................................... 29

Hazardous Locations .................................................. 29

Certications ......................................................... 29

ATEX/IECEx Safety Instructions ........................................ 30

Support .............................................................. 35

Troubleshooting ...................................................... 35

Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

Software ............................................................. 37

Replacement Parts .................................................... 37

Accessories ........................................................... 37

Factory Service ....................................................... 38

Trademarks .......................................................... 38

Warranty ............................................................. 38

Overview 1

XP2i Operation Manual

Overview



INTRODUCTION

Thank you for choosing the XP2i Digital Test Gauge from Crystal Engineering Corporation. Your XP2i is a combination of leading edge technology and rugged

industrial design.

Accuracy is 0.1% “of reading”, 0.02% “of Full Scale” or 0.05% “of Full Scale”

–

so any XP2i can typically replace several gauges you may have been using.

The XP2i is fully temperature compensated

–

so there is no change in accuracy throughout the entire operating temperature range!

The XP2i’s case is made from rugged aluminum alloy utilizing a gasket to seal the enclosure against dust and water intrusion. Even the RS-232 connector is

fully sealed (with or without the red cover or rubber boot). Circuitry is mounted in shock absorbing elastomer supports and the batteries are easily accessible

by removing four screws. But you won’t need to change the batteries often, since 3 AA batteries operate the XP2i for up to 1500 hours of continuous use.

Other features include:

• Continuous capture of peak and valley pressure readings

• PSV mode

• Programming interface

• User-dened units

• Intrinsically Safe

• All welded 316 stainless steel sensor

We hope your XP2i meets your expectations, and we're interested in any comments or suggestions you may have. You can send us a note at:

[email protected]. Many features in this and our other products are a direct result of your comments!

Crystal Engineering is the company that designs, manufactures, markets, and services the nVision reference pressure recorder, XP2i,and 30 Series pressure

calibrators, M1 Pressure Gauge, MultiCal multimeter pressure adapters, and a variety of industry specic pressure measuring equipment. Crystal Engineering

pioneered features like full temperature compensation and“of reading” rated gauges and calibrators. Pressure measuring equipment is the only thing we do

and that’s why we say:

™

Your XP2i can be customized, through the use

of our free CongXP™ software. Your personal

computer can disable, enable, or modify a

variety of features of your XP2i. Look for the

logo for

programmable features, like:

• A user dened pressure scale, and/or disable

unused pressure units

• Password protection to prevent

unauthorized changes

• Disable keypad recalibration, (peak)

button, and/or (units)button

• Expand or decrease allowable Zero range

• Set the gauge to a dierent density of water

factor (4° C, 60° F, or 68° F)

• Store a 12 digit ID or tag number in

non-volatile memory

• Adjust calibration values

Overview 2

XP2i Operation Manual



OPERATING INSTRUCTIONS

The XP2i is shipped with batteries installed, so it’s ready to use. Press and hold the (on/o)button. The XP2i will rst test all LCD segments. Release

the (on/o)button when the XP2i indicates pressure.

The XP2i always resumes operation in the mode and the units of the pressure last used, and it does not automatically rezero when turned on.

Connect the XP2i to your system.

! CAUTION: Use a wrench (¾" or 19mm) for installation and removal of XP2i! There is a limit to how much rotational force can be applied to the case, so

don’t rely on, or use, the case to screw the XP2i into a tting, and don’t use the case to remove the XP2i tting, either.

! CAUTION: Never insert any object into the pressure connection! The sensor diaphragm is very thin and can be damaged or destroyed by solid or sharp

objects. Cleaning of the sensor must be done with appropriate solvents only.

! WARNING: Severe injury or damage can occur through improper use of pressure instruments! Do not exceed recommended pressure limits of tubing

and ttings. Be certain all pressure connections are secured.

Most XP2i’s are intended for gauge pressure measurement. That is, they indicate the dierence between applied pressure and ambient barometric pressure.

However, the (zero)button can be used to force an XP2i to read zero pressure at any applied pressure, up to the full scale rating of the gauge. The factory

default setting limits the maximum zero value to 20 psi, but this limit can be changed with .

Some XP2i’s are rated for absolute pressure. Absolute gauges indicate the dierence between applied pressure and an internal vacuum reference. Absolute

pressure is always positive. For instance barometric pressure at sea level is on average about 14.7 psi (approximately 100 kPa or 1 bar), so at sea level this is the

lowest expected pressure indication. However, absolute gauges can be“zeroed” (unless prevented by CongXP). After zeroing an absolute gauge it is possible

to indicate a negative or positive gauge pressure.

! WARNING: This gauge can display zero pressure when connected to a source of pressure! Do not rely on the display indication before disconnecting—

it may not be indicating true pressure. Never disconnect pressure instrumentation without rst relieving system pressure!

Functions 3

XP2i Operation Manual

Functions

units Units Button

Pressing this button causes the XP2i to select the next available unit of pressure measurement.

See Pressure Ranges, Display Scales, & Resolution on page 28 or the list of pressure units available for your model.

Units that you don’t need or never use can be turned o. You can also dene a special unit for your XP2i with CongXP. You can

use the XP2i to display directly in a unit not otherwise available, such as feet of seawater, or foot-pounds of torque. When you select your custom unit from the

keypad, the screen displays the USER icon.

peak Peak Button

On the XP2i, pressing the (peak)button causes the display to cycle

through the following , depending on your setting in CongXP.

<No Icon> . . . . Live Pressure display

. . . . Maximum detected pressure

. . . . Minimum detected pressure

(blinking) . . . . PSV Mode, maximum *

(blinking) . . . . PSV Mode, minimum *

. . . . Average pressure

. . . . DataLoggerXP datalogging mode

*From the factory this setting is disabled. Use CongXP to enable.

Peak High and Peak Low values are not saved when the gauge shuts o; they will reset to the current

reading when the XP2i is turned on or reset.

In some cases the ability to display a peak value may not be needed, or

may even be dangerous. CongXP allows you to disable this button.

XP2is can average 1 to 10 readings, recalculated every time pressure is measured (4 times per second).

Enable and set the number of readings to be averaged with CongXP.

On the -DD, dual-line display XP2i, pressing the

(peak)

button causes the display to cycle

through the following, depending on your setting in CongXP:

<No Icon> . . . . Live Pressure display

. . . . Maximum detected pressure

. . . . Minimum detected pressure

(blinking) . . . . PSV Mode maximum *

(blinking) . . . . PSV Mode minimum *

. . . . Average pressure

. . . . DataLoggerXP datalogging mode

(remaining points displayed on lower line)

. . . . Tare *

. . . . Rate of change *

. . . . Dierential Mode *

+ . . . . Average Dierential Mode *

Functions 4

XP2i Operation Manual

clear

zero

Resetting (Clearing) Recorded Peak Values

Peak values can only be cleared when displaying either a Peak High or Peak Low recorded pressure. Press the (clear)button for at least ½ second. Dashed

lines will briey appear across the display indicating that both Peak values have been cleared. Both Peak High and Peak Low values will then display the cur-

rent applied pressure. Pressing the (clear)button while either the Peak High (

) or Peak Low (

) icon is displayed will not aect the zero value. If you

need to rezero the gauge, you must turn o both peak icons by pressing the (peak)button.

clear

zero

Zero

If you attempt to zero the gauge while applying a pressure which exceeds the Zero Limit (set in CongXP, defaults to 20 psi),

the command will be ignored and“--HI-”will be displayed.

XTo Zero the XP2i

Turn o peak indication by pressing the (peak)button repeatedly until the HI and LO icons are o, then press the (zero)button for at least ½ second when

the gauge is vented to atmosphere.

The display will then briey ash all dashed lines ( ), indicating that it has been re-zeroed. Absolute gauges will now indicate gauge pressure.

! WARNING: This gauge can display zero pressure when connected to a source of pressure! Do not rely on the display indication before disconnecting—

it may not be indicating true pressure. Never disconnect pressure instrumentation without rst relieving system pressure!

XTo Clear the Zero Value on an XP2i

Turn o peak indication as described above, then press and hold the (zero)button until the display changes from ( ) to ( ).

This is especially useful for absolute gauges that have been zeroed to use for gauge pressure measurement.

Functions 5

XP2i Operation Manual

Tare (-DD, Dual-Line Display XP2i Only)

Tare is a constant value subtracted from the true pressure. For instance, if you were mixing gases by partial pressure, you might want to ll a tank to 1760 psi

with air, then add another 440 psi of helium. To reduce the chance of error, you could tare the gauge at 1760 psi. Then you would add helium until the indica-

tion reached 440.

PSI

TARE

PSI

TARE

PSI

TARE

Fill to pressure Press the Tare button Top-o with helium

In contrast to the Zero function discussed previously, Tare is not subject to the Zero Limit set in CongXP. Tare is available only when the TARE icon is on. To

use the Tare feature, press the (peak)button repeatedly until the screen displays the TARE icon. The TARE icon will ash to remind you that live pressure may

not be indicated on the screen. Apply pressure to the gauge until you reach the desired value. Press the (zero)button. The top line will change from true

pressure to zero. The amount of the tare will be displayed on the second line.

To clear the tare, press and hold the (zero)button until the tare value changes from ( ) to ( ).

The Tare function is disabled by default, but can be enabled with CongXP.

Rate (-DD, Dual-Line Display XP2i Only)

Rate is the measurement of pressure change per minute. When in Rate mode, the second line will display the rate, and the /min icon will display. Rate is

calculated at every pressure measurement (4 times per second), and the displayed value is the average of the most recent 3 to 10 calculations. By increasing

the number of calculations in the average, the XP2i will indicate a more stable rate. However, the XP2i will react more slowly to changes in rate.

To use the rate feature, press the (peak)button repeatedly until the /min icon displays. As pressure changes, the second line will indicate rate of change.

The rate function is disabled by default, but can be enabled and congured with CongXP. The number of calculations can also

be set with the digital interface.

Dierential Mode (-DD, Dual-Line Display XP2i Only)

Dierential mode allows the XP2i-DD gauge (the master) to be connected to a second XP2i or XP2i-DD gauge (the slave) and display the pressure dierence

between the two gauges. A standard RS232 cable (p/n 2400) and null modem adapter (p/n 3456) or a null modem cable are required to directly connect the

gauges. You must use CongXP to enable this feature, and once enabled, use the (peak)button on the master gauge until the Peak High (

) and Peak

Low (

) icons are displayed simultaneously. An XP2i-DD gauge must be running rmware version R0114 or later, and an XP2i gauge must be running

rmware version R0014 or later for this feature to work. Use XP2iUpdate to upgrade to the latest rmware.

The dierential mode is disabled by default, but can be enabled and congured with CongXP.

Functions 6

XP2i Operation Manual

Automatic Shut-o

The XP2i has a shuto timer and will turn o automatically after 20 minutes of non-operation. Pressing any button or sending any command via the RS-232

connection resets the shuto timer for another 20 minutes of operation. The XP2i will briey display Auto O 20 when turned on.

To disable the shuto feature, turn on the XP2i by pressing the (on/o)and (zero)buttons simultaneously. The XP2i will briey display the words No Auto

O to indicate that it will not turn o. The shuto feature can be enabled again when turning the XP2i on, by pressing the same (on/o)and (zero)buttons.

These settings are retained when the product is powered down.

Note: This key combination will not toggle the auto-shuto feature if CongXP is set to require a password before changing settings.

Backlight

Pressing the (backlight)button instantly lights the display at maximum brightness. Hold down the button for 1 second to keep it on. The display will ash

briey, indicating that it will stay on for 1 minute. If you press the (backlight)button again, the backlight will go into a lower brightness setting to extend bat-

tery life, and remain on for 2 minutes after the last key is pressed. Press the (backlight)button once more and the light will go out.

If you start the XP2i in the No Auto O mode, you may select the brightness level in the same way. The light will never time out and turn o. Turn o the XP2i,

or press the (backlight)button repeatedly, to turn o the backlight.

Measuring Vacuum

All versions of the XP2i can be used to measure moderate vacuum, though only ranges of 300 psi (and 20 bar or 2000 kPa) and lower are actually tested and

certied for vacuum operation.

When measuring pressure less than ambient barometric conditions, a minus (-) sign will appear.

Absolute gauges (models with a “B” in front of“XP2i”in the part number) will NOT indicate a negative sign when vacuum is applied, unless the (zero)button

has been pressed while a pressure greater than full vacuum is applied to the gauge. If your absolute gauge does indicate a negative pressure, you can clear

the zero value (“unzero”) by pressing the (zero)button until the display changes from ( ) to ( ).

! CAUTION: XP2is are not recommended for continuous use below -14.5 psig.

For continuous use below -14.5 psig with high accuracy, choose our XP2i-DP Dierential Pressure Gauge.

Functions 7

XP2i Operation Manual

Water Density (Inches of Water)

The following applies only to models where inches of water is a selectable pressure unit. As shipped from the factory, the XP2i is set to display inches of water

corresponding to the density of water at 4° C (39.2° F). You may require a dierent water density for your application, so the XP2i can be set to use the density

of water at 20° C (68° F) or 15.6° C (60° F) instead.

To check and/or change the water density setting from the keypad, turn on the XP2i by pressing the (on/o)button and the (peak)button simultaneously.

The display will indicate either 4C, 60F, or 68F.

Press the (units)button until the display cycles to the desired water density, then press the (zero)button to store the selection (this will not zero the gauge).

Select and set the desired density of water.

Note: If the XP2i is password protected, or inches of water is disabled, you will not be able to view or change the water density from the keypad.

Overpressure Conditions

The XP2i will read pressure up to approximately 110% of the rated pressure range. Above 110% percent of the range the display will start ashing and the

readings will not be reliable. The zero function does not aect the point at which the display starts ashing to indicate overpressure, so depending on the zero

value it is possible that the display can start ashing without the maximum pressure being displayed.

For instance, if a 100PSIXP2i is zeroed when 30 psi is being applied, it will indicate that the overpressure condition has been reached at 80 psi

(i.e., 110% x 100 psi – 30 psi = 80 psi).

Overpressure can aect accuracy, but the eect is only temporary unless the sensor has been destroyed. See Pressure Ranges, Display Scales, & Resolution

on page 28 for maximum overpressure.

PSVtest Mode

PSVtest mode is designed for PSV and PRV (“Pressure Safety Valve” and “Pressure Relief Valve”, respectively) as well as for Rupture Disc (also known as “Burst

Disc”) testing. It increases the measurement rate of the XP2i gauge to approximately eight times per second, to capture the peak pressure when the valve

opened, and adds a method of automatically capturing the closing reseat pressure.

Use CongXP to activate PSVtest Mode. When the Peak High icon (

) ashes, PSVtest mode is enabled. A special feature of PSVtest is that Peak Low is au-

tomatically reset to the Peak High value whenever a new Peak High value is detected. Once pressure stops increasing, as when a PSV opens (and the pressure

drops below the maximum pressure) XP2i detects the new minimum pressure values (the Peak Low), capturing the closing pressure of a PSV.

Press the (peak)button once to view the captured reseat pressure. The Peak Low icon (

) will ash on the display.

To clear the peaks, press the (clear)button while the display shows the High (

) or Low (

) icons.

Application note AN-006

–

Pressure Safety Valve Testing detailing the operation of the PSVtest mode is available on our website, and includes examples on how

to use the gauge in relief valve and burst disk testing.

Functions 8

XP2i Operation Manual

Low Battery Indication

The Battery icon ( ) uses three bars to display the battery level. When the icon displays all three bars, the batteries are full. The XP2i will continue to operate

accurately while the icon is visible. When the batteries are exhausted, the letters batt will appear across the display. After batt appears, no pressure measure-

ments will be possible until the batteries are replaced.

Battery Replacement

The XP2i uses 3 AA batteries. Loosen the four rear panel screws to gain access to the battery compartment. These four panel screws are captive inside the

panel and are not removable. Pull the panel up to expose the battery compartment. After replacing the batteries, the XP2i will start operating immediately

(without having to press the (on/o)button). This indicates that a complete reset has occurred, and is normal.

! WARNING: Do not remove or change the batteries in hazardous locations.

! WARNING: T4 or T3 Temperature Class is based on selection of approved battery. See the table below.

! CAUTION: Do not mix battery types or manufacturers.

ATEX/IECEx: The XP2i is Intrinsically Safe only if powered by one of the following battery types:

Approved Battery Type Ta= Marking

Rayovac Max Plus 815 -20 to 50° C Ex ia IIC T4 Ga

Energizer E91*

Energizer EN91*-20 to 50° C Ex ia IIC T3 Ga

Duracell MN1500

*Energizer is manufactured by Energizer Holdings, Inc., and the Eveready Battery Company, Inc.

Many other battery types and models have been tested but failed to meet the requirements for Intrinsic Safety—do not assume other models are equivalent.