All our detectors from the level of the AlcoHawk Micro upwards can (and should) be re-calibrated after a period of time to ensure
continuing accurate results.
Can I recalibrate my
Alcohol Detector myself?
No. Professional recalibration equipment is required, and a licence from Customs
& Excise is needed to purchase, store and use the materials required so the detector must be
returned to us for recalibration.
What if I have a
detector with exchangeable sensor?
If you have an AlcoMate Prestige,
DigiPro or AL7000
sensors are available for
£ that you can fit yourself -
How often do they need
to be Calibrated?
Think of calibration as a service on your car. If you use the car a lot,
you need to have it serviced more often but even if your car just sits in the
garage for most of the time, it still needs an annual service - and sometimes,
leaving your car out of use can lead to more service work than using it
regularly. It's the same with a Breathalyzer. Most people will do less
than 500 tests a year, in which case an annual service will be fine, however if
it spends long periods of time out of use, this in itself can lead to problems
with the sensor drying out. It's best to use it at least a couple of times
a month to make sure this doesn't happen.
Another reason for regular
calibration is because if a Breathalyzer hasn't been recalibrated for some time
it is possible that the sensor will move so
far out of range that it cannot be brought back into the operating range. We therefore
recommend personal device be done every 12 months, or if you're using it
to test someone else every 6 months. Using a
detector within less than the minimum time after drinking (20mins) or smoking
(10mins) can dramatically reduce a sensor's life before it needs recalibrating,
or in some cases replacing if excessive smoke/alcohol or other contaminants have
been blown into the unit. Users must remember that these are sensitive medical
instruments and must be used in accordance with the supplied User Guide.
How do I know if my unit
When the readings start to lose consistency. 3 tests, each taken 2 minutes apart
and with a consistent blow should produce readings within a narrow margin; the
degree of "wander" will vary depending upon the quality of detector purchased
but a regular user will become accustomed to the level of accuracy he/she would
expect and when the readings start to vary too greatly for accurate use then the
unit should be sent for calibration. If in doubt,
call us on 0208 454 7372 or contact us
via our customer support centre.
Can you recalibrate a
Detector I've purchased elsewhere?
Possibly - we are authorised to calibrate over 58 devices currently available in
the UK. Contact us and let us know what type of
unit it is. If we can, we will.