Top» Why does the instrument take more time to 'settle' or 'clear' after taking larger samples?
Initially check - and correct if necessary - the calibration before each session (using the procedures below) and keep a record of the drift. However, many customers feel that the following helps them establish such schemes. Top» How often should the instrument be calibrated and can I check calibration drift?Ĭalibration frequency is not an issue that PPM Technology can advise you on - your Health & Safety procedures or equivalent should recommend a suitable scheme. This procedure is also available as part of this HowTo. You will now need to calibrate the instrument before continuing use. Turn the instrument off and then back on to complete the reset procedure.
Wait for the display to cycle through to the 0.00 display.You should see the word rSEt on the LCD.With the instrument turned off for at least two hours press and hold down both the left- and right-hand calibration buttons while turning the instrument on.Read the procedure below and make sure that you have understood each step before starting. This will delete the calibration data and the instrument will have to be re-calibrated afterwards. If your instrument has been calibrated incorrect or has been rendered unusable by incorrect settings being used then it will need to be reset. Top» I've been told that I need to 'reset' my instrument. Once this is done re-try the calibration procedure - with a fresh calibration standard if necessary. Either way you will need to clear wrong calibration from memory and revert to the default factory calibration. Check the date on the calibration standard - has it expired? Also read the calibration procedure carefully. This can be caused by two problems: either a bad calibration standard was used or the sensor in the instrument has come to the end of it's life. '-' is shown on the display all the time. When I use the AMS-2 I get 'bAt' on the instrument screen but the battery is OK?Īfter I re-calibrated the instrument it no longer clears and does not let me sample.My calibration standard has expired - can I still use it and how do I dispose of it?.How does the htV instrument convert from ppm to mg/m 3 ?.The pump on my instrument has stuck or sounds 'rough' - can I do anything?.Is there a way to make the sensor 'settle' quicker?.What do the different 'limit' settings do?.I've been told that my instrument might perform better in a different 'mode'.Why does the instrument take more time to 'settle' after taking larger samples?.How often should the instrument be calibrated and can I check calibration drift?.I've been told that I need to reset my instrument.After I re-calibrated the instrument it no longer clears and does not let me sample.If you have a problem with your instrument then maybe it's already been solved - check the questions below before getting in touch with us.