Crystal XP2i Manuel utilisateur

C R Y S T A L

engineering corporation

Operation Manual

XP2i

ATEX Digital Test Gauge

Contents
Introduction........................................................1
Operating Instructions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
Unitsbutton.............................................................3
Zero...................................................................3
Peak detection and Average . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
Resetting (clearing) recorded peak values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
Automaticshut-off.......................................................4
Backlighting the Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
MeasuringVacuum......................................................5
Water Density (Inches of Water). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Overpressure Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Filter...................................................................6
Low battery indication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Battery replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Reset..................................................................7
Troubleshooting.....................................................7
Noisy or unstable reading when used with uids ..............................7
Non-repeatability of pressure measurements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
Slow return to zero and/or non-repeatability of pressure measurements. . . . . . . . . . 8
Err1displayed..........................................................8
Err2displayed..........................................................8
Display continuously ashes all segments ...................................8
Digital Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
I/OSettings.............................................................9
Communication Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
Query Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
MessageStore..........................................................9
Model................................................................10
Pressure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
Pressure (one line). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Pressure,High..........................................................10
Pressure,Low..........................................................10
Range................................................................10
Return Average Pressure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Return the Average Window Size. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
SerialNumber .........................................................11
Version...............................................................11
WaterDensity..........................................................11
ZeroCheck............................................................11
Commands. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
ClearPeaks...........................................................12
Disable/Enable Peak Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
MessageStore.........................................................12
Next Pressure Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
NoAutoOff............................................................12

Reset.................................................................12
Set the Average Window Size. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
Streaming Data On/Off . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
WaterDensity..........................................................13
Zero..................................................................13
Acknowledgment of a Command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
Troubleshooting the Digital Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Effects of Password Protection on Commands. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Programming Tips . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
Calibration........................................................16
XP2i Model & Serial Numbers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
Serial Numbering System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
Model Numbering System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
Accuracy.............................................................19
Temperature...........................................................19
Humidity..............................................................19
Media Compatibility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
Pressure Conversions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
Connection ...........................................................20
Power ................................................................20
Enclosure .............................................................21
Pressure Ranges, Display Scales & Resolution . . . . . . . . . . . . . . . . . . . . . . . . . . .22
Intrinsic Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
ATEX .................................................................23
CSA..................................................................23
IECExScheme.........................................................23
Certifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
C-tick ................................................................23
Software..........................................................23
LabVIEW™ drivers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
CongXP Conguration Software. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
Replacement Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
Accessories.......................................................24
ACadapterkit.........................................................24
Plastic Carrying Case . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
6″Gauge Adapter Kit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
8½″Gauge Adapter Kit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
RS-232Cable..........................................................24
Trademarks........................................................24
European Community Declaration of Conformity . . . . . . . . . . . . . . . . . . . . . . . .25
Warranty..........................................................26
HowtoContactUs:.....................................................26

XP2i ATEX User’s Manual •Page 1

C R Y S T A L

engineering corporation

Introduction

Thank you for choosing the XP2iDigital Test Gauge from Crystal Engineering Corporation.

Your XP2iis a combination of leading edge technology and rugged industrial design.

Accuracy is 0.1 percent of reading - so any XP2ican typically replace several gauges you may

have been using. The XP2iis fully temperature compensated - so there is no change in accu-

racy throughout the entire operating temperature range!

The case, and almost all metal components, are stainless steel. Gaskets seal out dust and water.

Even the RS-232 connector (with or without the cover) is fully sealed. Circuitry is mounted in a

shock absorbing elastomer, and the batteries are easily accessible by removing two screws. But

you won’t need to change batteries often, since 3 AA batteries operate the XP2ifor up to 1500

hours of continuous use. If you are mounting the gauge in a permanent location consider order-

ing the external power supply kit (PN: 2984). With the external power supply the batteries serve as

an automatic backup supply, in case of power failure. Other features include:

•continuous recording of peak and valley pressure readings

•a removable lter (to keep out large particle contaminants)

•all welded 316 stainless steel sensor

•can be cleaned for oxygen service

Your XP2ican be customized, through the use of CongXP™ software available from Crystal Engi-

neering. Your personal computer can disable, enable or modify a variety of features of your XP2i.

Look for the

ConFIGXP PROGRAMMABLE

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

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: feedback@crystalengineering.net.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 XP2i, 30

series pressure calibrators, MultiCal multimeter pressure adapters and a variety of industry spe-

ci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: PRESSURE is Our BUSINESS™

Page 2 •XP2iATEX User’s Manual

C R Y S T A L

engineering corporation

Operating Instructions

The XP2iis shipped with batteries installed, so it’s ready to use. Press and hold the

(on/off)button. The XP2iwill rst test all LCD segments. Release the but-

ton when the XP2iindicates pressure.

The XP2ialways resumes operation in the mode and the units of the pressure last used, and it

does not automatically rezero when turned on.

Connect the XP2ito your system. Use pipe thread tape or pipe thread sealant on the ¼″NPT t-

ting. 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 tting, and don’t use the case to remove the

XP2i

tting, either.

WARNING: Severe injury or damage can occur through improper use of pressure instru-

ments! Do not exceed recommended pressure limits of tubing and ttings. Be certain all pres-

sure connections are secured.

CAUTION: Never insert any object (other than the ⁄” NPT metal lter) 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 dierence

between applied pressure and ambient barometric pressure. However, the

zero

button can be

used to force an XP2ito 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 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 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 pres-

sure. Never disconnect pressure instrumentation without rst relieving system pressure!

XP2i ATEX User’s Manual •Page 3

C R Y S T A L

engineering corporation

Units button

Pressing this button causes the XP2ito select the next available unit of pressure

measurement. See “Pressure Ranges, Display Scales & Resolution” for the list of

pressure units available for your model.

ConFIGXP PROGRAMMABLE

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. 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 o.

Zero

To zero the

XP2i

, you must turn o peak indication, then press the

zero

button

for at least ½ second. The display will then briey ash 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 CongXP), 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 pres-

sure. Never disconnect pressure instrumentation without rst relieving system pressure!

You can clear the zero value: Turn o peak indication 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 pres-

sure gases. You can also disable the zero button entirely, by setting the Zero value to a large nega-

tive number.

The

zero

button changes its function when the peak high (

) or the peak low (

) icon is

displayed. While a peak icon is displayed the

zero

button becomes the

clear

button.

PSI inH2O inHg kpa

mmHg mmH2O mbar kgf/cm2

PSI inH2O inHg kpa

mmHg mmH2O mbar kgf/cm2

Page 4 •XP2iATEX User’s Manual

C R Y S T A L

engineering corporation

Peak detection and Average

Pressing the Peak button causes the display to cycle through the following:

. . . . . . . . . . Recorded maximum pressure

. . . . . . . . . . Minimum recorded pressure

. . . . Average pressure*

<No Icon> . . . . Live pressure display

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

reading when the XP2iis turned on or reset.

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

ConFIGXP PROGRAMMABLE

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 (3 times per

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

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

briey appear across the display and both

and

icons will ash briey,

indicating that both peak values have been cleared. Both peak high and low values

will then display the current applied pressure. Pressing the

clear

button while either peak hi or

peak lo 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.

Automatic shut-off

The XP2ihas a shuto timer and will turn o automatically after 20 minutes of operation. Pressing

any button or sending any command via the RS-232 connection resets the shuto timer for an-

other 20 minutes of operation.

The shuto feature can be defeated, if desired, when turning the XP2ion. Pressing the

(on/off) and

zero

buttons simultaneously will prevent the XP2ifrom automatically turning o.

The XP2iwill briey display the words “No Auto O” to indicate that it will not turn o.

This procedure is required each time the XP2iis turned on, if you want to defeat the auto-shuto.

XP2i ATEX User’s Manual •Page 5

C R Y S T A L

engineering corporation

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 ash

briey, 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 ash

briey, and remain on for 2 minutes. Press the button once more and the light will go out.

If you start the XP2iin the“No Auto O” mode, you select the brightness level the same way, but

the light will never time out and turn o; you will have to either turn o the XP2ior press the

backlight again until the light goes out.

Measuring Vacuum

All versions of the XP2ican 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.

XP2is are not recommended for continuous use at high vacuum.

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 nega-

tive 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.

Water Density (Inches of Water)

The following applies only to models where inches of water are available. As shipped from the

factory, the XP2iis 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 XP2ican 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 XP2iby pressing

the (on/off) button and the

units

button simultaneously. The display will indicate either

“4C” or “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).

ConFIGXP PROGRAMMABLE

Select and set the desired density of water. If the XP2iis pass-

word protected, you will not be able to view or change the water density from the keypad.

Page 6 •XP2iATEX User’s Manual

C R Y S T A L

engineering corporation

Overpressure Conditions

The XP2iwill 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 maxi-

mum pressure being displayed.

For instance, if a 100 PSI XP2iis zeroed when 30 PSI is being applied, it will indicate that the over-

pressure 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 Specications for maximum overpressure.

Filter

The XP2ihas a removable, stainless steel mesh lter, installed in the bottom of the pressure con-

nection. This lter is designed to keep large particles from becoming entrapped in the sensor

cavity.

If the XP2ifails to return to zero, or returns to zero or new applied pres-

sures slowly, the lter may be obstructed. The lter can be removed and

cleaned if necessary, by unscrewing it with a 5⁄32”(4 mm) hex key, and

using solvents and/or compressed air to clean it out. Or, you can pur-

chase a replacement lter, PN:3002.

Low battery indication

The battery icon ( ) is the rst indication of a low battery. The

XP2iwill 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 measurements

will be possible until the batteries are replaced.

Battery replacement

The XP2iuses 3 AA batteries*. Batteries must only be changed in a non-hazardous area! With the

hex key wrench (5⁄64”[2mm], provided with the gauge), unscrew the two rear panel screws to gain

access to the battery compartment. After replacing the batteries, the XP2iwill start operating

immediately (without having to press the button). This indicates that a complete reset has oc-

curred, and is normal.

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