The XP2i digital test gauge from Crystal Pressure – a division of Ametek Test & Calibration Instruments is an extremely useful tool. It is ultra-rugged, intrinsically safe and has an accuracy level of 0.1% of reading, 0.02% of full scale (-S2) or 0.05% of full scale (-S5). It is the perfect tool for measuring and recording (with the optional DataloggerXP software upgrade) pressure in the field or in the lab. The XP2i is available in pressure ranges from 15psi up to 15,000psi and is fully temperature compensated from -10°C to 50°C. Below is a discussion of different error readings and issues the XP2i may experience along with their possible meaning or solutions. The items mentioned below are only a guide line and although they can be a useful tool to determine why your XP2i may not be functioning properly, the only way to be positive is to have it assessed by the manufacturer who would also be responsible to determine if an XP2i is repairable under warranty, or has failed due to misuse.
There are a number of different reasons your XP2i may not be responding or acting the way you expect it to. One of the easiest ways to keep you gauge running well is to make sure you update the firmware in your gauge by downloading the FREE ConfigXP software available at: www.ametekcalibration.com. Having the latest version of ConfigXP will ensure that your gauge is running at peak performance and should always be your first step in trouble shooting the gauge. Flashing numbers may sometimes indicate that the firmware needs to be updated or the most common reason; a broken crystal. The crystal is a small chip which regulates the timing and synchronicity of your XP2i. It this is broken it will need to be replaced at Crystal and is relatively inexpensive in terms of an XP2i repair. Sometimes you gauge cannot communicate with ConfigXP. The main reason for this is that it may be in the DataloggerXP mode and must be returned to the standard mode before it can communicate with the ConfixXP program. If you still cannot communicate then it may be an issue with the communication ribbon or board. Sometimes gauges display “HI” when zeroed. In this case you must again connect to ConfigXP and look at the zero PSI box. If this box reads anything other than the factory setting of 200PSI then you must reset it and update the gauge. The gauge should now zero.
The XP2i uses a bright LCD display. If you display is dim or only partially visible or if there is a crack in the screen chances are you may need to have the LCD screen replace.
Although P2i’s have varying over pressure ranges from 6.5 for 15PSI range to 1.3 for 15,000PSI ranges, they can still be over pressured. If you have an XP2i that is displaying an Error 5/6 then chances are you have a bad sensor, likely caused by being over pressured. If you gauge is drifting this can also be an indication of a sensor issue. An easy way to trouble shoot this it to have a look inside the stem. If you have a gauge that has had the same fitting attached for a long time, then debris may have collected inside the stem and over time this debris can block your test medium when testing pressure to the sensor. If it is not clogged then it may have a damaged sensor.
If you have an XP2i displaying an Error 1 or 2 it is likely storing too much data or too much information. You need to connect your gauge to XP2i update or DataloggerXP and download your data. If the problem persists then you likely have a memory issue which would need to be restored at Crystal.
The best tools you have for diagnosis and repair are the free software downloads from the Ametek-Crystal website. Please do not open up any gauges as this may further damage your gauge and could also void the warranty and intrinsic safety. The best way to be certain of the issue your gauge has it to return it to Cameron Instruments (Your authorized Crystal distributor in Canada) who will coordinate having your unit returned to the manufacturer for evaluation. If your gauge is under warranty, then this return will cost you only time. If it is something that must be repaired then Crystal will assess this and Cameron Instruments will notify you of any costs prior to proceeding. As with any instrument, ensuring you are using it properly and keeping it clean and stored properly will maximize its life span.