Crystal XP2i Instruction Manual

2i

XPDigital Test Gauge

Operation Manual

C R Y S T A L

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Contents

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

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

Units button.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 Zero.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3 Tare (-DD, DUAL-LINE DISPLAY XP2i ONLY).. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Rate (-DD, DUAL-LINE DISPLAY XP2i ONLY).. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Peak detection and Average .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 Differential Mode (-DD, DUAL-LINE DISPLAY XP2i ONLY).. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Resetting (clearing) recorded peak values.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 Automatic shut-off.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6 Backlighting the Display.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6 Measuring Vacuum.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6 Water Density (Inches of Water).. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6 Overpressure Conditions .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7 Low battery indication .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7 Battery replacement.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7 Reset.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8 PSVtest Mode.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8 Internal Data Logging (-DL DataLoggerXP Option).. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9

Calibration.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9

XP2i Serial Numbers.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10

Serial Number Location... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ...................................10 Serial Numbering System.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10 Model Numbering System.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11

Specifications .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12

Accuracy.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12 Temperature.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12 Humidity.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12 Media Compatibility.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12 Pressure Conversions .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13 Connections.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13 Power.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13 Enclosure.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14

Pressure Ranges, Display Scales & Resolution.. . . . . . . . . . . . . . . . . . . . . . . . . . .15 Intrinsic Safety.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16 Certifications.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16

Software.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17

LabVIEW™ drivers.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17 ConfigXP Configuration Software... ... ... ... ... ... ... ... ... ... ... ... ... ...............................17

Replacement Parts.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17

Accessories.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17

AC adapter kit.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17 Plastic Carrying Case.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17 Protective Boot.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17 6″ Gauge Adapter Kit.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17 8½″ Gauge Adapter Kit.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17 Connection Adapter.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17 RS-232 Cable.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17

ATEX Safety Instructions .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18

ČESKY (Czech) .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 DEUTSCH (German). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 ENGLISH (English) .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 ESPAÑOL (Spanish).. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 FRANÇAIS (French).. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 ITALIANO (Italian).. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 NEDERLANDS (Dutch).. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 POLSKI (Polish).. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

SUOMEN KIELI (Finnish).. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Troubleshooting.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22

Noisy or unstable reading when used with fluids.. . . . . . . . . . . . . . . . . . . . . . . . . . . . .22 Non-repeatability of pressure measurements.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23 Slow return to zero and/or non-repeatability of pressure measurements.. . . . . . . . .23 Err 1 displayed.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23 Err 2 displayed.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23 Err 5 or Err 6 displayed.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23 Display continuously flashes all segments.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23

Trademarks.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24

Service and Support.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24

How to Contact Us:.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24

European Community Declaration of Conformity: CE.. . . . . . . . . . . . . . . . . . . . .25

European Community Declaration of Conformity: ATEX.. . . . . . . . . . . . . . . . . . .26

Warranty.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27

XP2i Operation Manual • Page 1

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 percent of reading - 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 cover). Circuitry is mounted in shock adsorbing 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:

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continuous recording of peak and valley pressure readings a removable filter (to keep out large particle contaminants) all welded 316 stainless steel sensor

can be cleaned for oxygen service

Your XP2i can be customized, through the use of ConfigXP™ software available from Crystal Engineering. Your personal computer can disable, enable or modify a variety of features of your XP2i. Look for the ConFIGXPPROGRAMMABLE logo for programmable features, like:

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a user defined 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 different 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

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: [e-mail]. 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, MultiCal multimeter pressure adapters and a variety of industry specific pressure measuring equipment. Crystal Engineering pioneered features like full temperature compensation and “of reading” rated gauges and calibra-

tors. Pressure measuring equipment is the only thing we do and that’s why we say:

PRESSURE is Our BUSINESS™

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Page 2 • XP2i Operation Manual

Operating Instructions

The XP2i is shipped with batteries installed, so it’s ready to use. Press and hold the (on/off) button. The XP2i will first test all LCD segments. Release the 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. Use pipe thread tape or pipe thread sealant on the ¼″NPT fitting (except when connecting to Crystal’s QTF Series CPF fitting). Always 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 fitting, and don’t use the case to remove the XP2i fitting, either.

WARNING: Severe injury or damage can occur through improper use of pressure instruments! Do not exceed recommended pressure limits of tubing and fittings. Be certain all pressure connections are secured.

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.

Most XP2is are intended for gauge pressure measurement. That is, they indicate the dif 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 200 PSI, but this limit can be changed with ConFIGXP .

Some XP2is are rated for absolute pressure. Absolute gauges indicate the difference 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 ConfigXP). After zeroing an absolute gauge it is possible to indicate a negative 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 first relieving system pressure!

Units button

Pressing this button causes the XP2i to select the next available unit of pressure measurement. See “Pressure Ranges, Display Scales & Resolution” for the list of pressure units available for your model.

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XP2i Operation Manual • Page 3

ConFIGXP PROGRAMMABLE Units that you don’t need or never use can be turned off. You can also define a special unit for your XP2i with ConfigXP. That way 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 your custom unit is selected and displayed on the XP2i, all pressure unit icons will be off.

Zero

To zero the XP2i you must turn off peak indication, then press the zero button for at least ½ second. To zero a dual-line display XP2i you must turn off display of peak or TARE values (press the peak button until second line is blank, or displaying average or rate), then press the zero button for at least ½ second.

The display will then briefly flash all dashed lines (- - - - -), indicating that it has been re-zeroed. If you attempt to zero the gauge while more than 200 PSI is applied (or the pressure limit set with ConfigXP), the command will be ignored, and “- -HI-” will be displayed.

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 first relieving system pressure!

To clear the Zero Value on an XP2i turn off peak indication then press and hold the zero button until the display changes from (- - - - -) to (- - -).

To clear the Zero Value on a dual-line XP2i turn off display of peak or TARE values (press the peak button until second line is blank, or displaying average or rate), then press and hold the zero button until the display changes from (- - - - -) to (- - -).

This is especially useful for absolute gauges that have been zeroed while measuring barometric pressure.

Zeroed		Clear Zero (Unzero)

ConFIGXP PROGRAMMABLE You can change the point at which the Zero button will display “- -HI-”. For instance, you could set the maximum zero to 3000 PSI, if you need to mix high pressure gases. You can also disable the zero button entirely, by setting the Zero value to a large negative or positive number.

On an XP2i the zero button changes its function when the peak high ( HI ) or the peak low ( LO ) icon is displayed. While a peak icon is displayed the zero button becomes the clear button.

On a dual-line XP2i the zero button changes its function depending on what is being displayed on the second line.

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Page 4 • 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 fill 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 indication reached 440.

PSI	PSI	PSI
TARE	TARE	TARE
Fill to pressure	Press the Tare button	Top-off with helium

To use the tare feature, press the Peak button until TARE is displayed. Apply pressure to the gauge until the desired tare value is reached. Press the zero button. The top line will change from true pressure to the tared pressure. The amount of the tare will be displayed on the second line.

ConFIGXP PROGRAMMABLE The tare function is disabled by default, but can be enabled with ConfigXP.

Tare is in effect only when the tare icon is on.

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 HI , LO , AVG and TARE icons will not be lit. Rate is calculated every pressure measurement (3 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 until no icons are lit but the second line is displaying a value. As pressure changes, the second line will indicate rate of change.

ConFIGXP PROGRAMMABLE The rate function is disabled by default, but can be enabled and configured with ConfigXP. The number of calculations can also be set with the digital interface.

Peak detection and Average

On the XP2i, pressing the Peak button causes the display to cycle through the following:

HI . . . . . . Recorded maximum pressure

LO . . . . . . Minimum recorded pressure

HI	LO . . . Average pressure*

<No Icon> . . . Live pressure display

* From the factory this Average Pressure is disabled. Use ConfigXP to enable.

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XP2i Operation Manual • Page 5

On the -DD, dual-line XP2i, pressing the Peak button causes the display to cycle through the following:

HI . . . . . . Recorded maximum pressure

LO . . . . . . Minimum recorded pressure

AVG. . . . . . Average pressure

TARE. . . . . . Tare

<No Icon>. . . Rate of change

<No Icon>. . . Off

Peak high and low values are not saved when the gauge shuts off; they will reset to the current reading when the XP2i is turned on or reset.

ConFIGXP PROGRAMMABLE In some cases the ability to display a peak value may not be needed, or may even be dangerous. ConfigXP allows you to disable this button.

XP2is can average 1 to 10 readings, recalculated every time pressure is measured (3 times per second). Enable and set the number of readings to be averaged with ConfigXP.

Differential Mode (-DD, DUAL-LINE DISPLAY XP2i ONLY)

Differential 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 difference 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 ConfigXP to enable this feature, and once enabled, use the PEAK button on the master gauge until the HI and LO icons are displayed simultaneously. An XP2i-DD gauge must be running firmware version R0110 or later, and an XP2i gauge must be running firmware version R0010 or later for this feature to work. Use XP2iUpdate (available on the Crystal Engineering web site) to upgrade to the latest firmware. An application note detailing the operation of differential mode is available from the Crystal Engineering web site, and and includes instructions on how to connect and setup both gauges.

ConFIGXP PROGRAMMABLE The differential mode is disabled by default, but can be enabled and configured with ConfigXP.

Resetting (clearing) recorded peak values

Peak values can only be cleared when displaying either a high or low recorded pressure. Press the clear button for at least ½ second. Dashed lines will then briefly appear across the display indicating that both peak values have been cleared. Both peak high and low values will then display the current applied pres-

sure. Pressing the clear button while either peak hi or peak lo icon is displayed will not affect the zero value. If you need to rezero the gauge, you must turn off both peak icons by pressing the

peak button.

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Page 6 • XP2i Operation Manual

Automatic shut-off

The XP2i has a shutoff timer and will turn off automatically after 20 minutes of non-operation. Pressing any button or sending any command via the RS-232 connection resets the shutoff timer for another 20 minutes of operation.

The shutoff feature can be defeated, if desired, when turning the XP2i on. Pressing the (on/off) and zero buttons simultaneously will prevent the XP2i from automatically turning off. The XP2i will briefly display the words “No Auto Off” to indicate that it will not turn off. The shutoff feature can be toggled or enabled again when turning the XP2i on. Pressing the same (on/off) and zero buttons returns the XP2i to auto off functionality. The XP2i will briefly display

the words “Auto Off 20” to indicate that will turn off after 20 minutes of inactivity. These settings are retained when the product is powered down.

Backlighting the Display

Pressing the (backlight) button instantly lights the display at maximum brightness, but

to keep it on you need to hold down the button for 2 seconds. The display will flash briefly, indicating that it will stay on for 1 minute. If you press the button again, the backlight

will go into a lower brightness setting to extend battery life, the display will again flash briefly, and remain on for 2 minutes. Press the button once more and the light will go out.

If you start the XP2i in the “No Auto Off” mode, you select the brightness level the same way, but the light will never time out and turn off; you will have to either turn off the XP2i or press the backlight again until the light goes out.

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 certified 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 ----- (5 dashes) to - - - (dash, space, dash, space, dash). See “Zero” for details.

CAUTION: XP2is are not recommended for continuous use at high vacuum.

For continuous use at high vacuum with high accuracy, choose our XP2i-DP Differential Pressure Gauge. For product details, refer to our web site at www.crystalengineering.net.

Water Density (Inches of Water)

The following applies only to models where inch 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

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