Ametek mocon Dansensor CheckMate3 User Manual

20 User Guide EN Dansensor® CheckMate 3
P/N 300042-I
05/2019
O
2
offset calibration
NOTE! Only valid for devices with an Electro-chemical (EC) O
2
sensor.
An electrochemical (EC) sensor is a wearing part as the chemistry inside wears proportionally
to the amount of O
2
seen during its lifetime.
We therefore recommend that you perform daily offset (20.9%) calibrations before starting
measurements.
See "Offset (20,9%) calibration" on page 46 for details.
NOTE! As a minimum a weekly offset calibration is required to ensure correct
measuring results!
NOTE! If device is used entirely at very high O
2
concentrations above 20.9% the
lifetime will be reduced proportionally. At O
2
levels up to 20.9%, the normal
lifetime is approximately
9 months.
O
2
sensor temperature sensitivity
NOTE! Only valid for devices with an Electro-chemical (EC) O
2
sensor.
Due to the sensor design the readout will be affected when moving the device from cold to
warm temperatures or vice versa. Normally for compensation to work properly the device
must be stabilized at the current ambient temperature for some time (up to 1-2 hours)
However if you cannot wait for this time, use short stabilizing time, for example 10-15 min.,
and perform an offset (20.9%) calibration of the O
2
sensor right before each measurement
series until device has stabilized. This will bring the calibration back in line with current
response.
NOTE! When entering another ambient temperature area, the device must again be
offset calibrated before use to ensure proper accuracy.
The sensor is also slower in response in cold environments so for better accuracy you should
measure the values twice and skip first measurement (though the first measurement will
comply with T
95
). Alternatively select longer measuring periods in the product setup for the
particular measurements.
CO
2
sensor temperature sensitivity
The CO
2
measurements however has faster response when changing ambient temperature
zones so if you are only interested in measuring the CO
2
values, you need not recalibrate O
2
offset but can start the CO
2
measurements right away.

Ametek mocon Dansensor CheckMate3 Specifications

General

Brand	Ametek
Model	mocon Dansensor CheckMate3
Category	Laboratory Equipment
Language	English