10
11
Auxiliary equipment
Unisense provides solutions for a range of experimental setups, including bulk measurements,
microprofiling and micro-respiration. Depending on your measuring requirements, you may need
additional equipment for positioning, calibration, sample fixation, etc.
Please visit
for inspiration and contact Unisense for any questions you
may have.
12
Temperature compensation
12.1
Electrochemical sensors
With the UniAmp it is possible to automatically correct the sensor signal for changes in temperature
for the amperometric sensors for up to ±3°C from the calibration temperature. The compensation
may be turned on and off in the calibration window for each sensor by clicking the
Temperature
compensation
checkbox. To use this option, you must specify the temperature input it to be used for
the temperature correction. This may be:
•
A fixed temperature, that you enter manually
•
The input from a temperature sensor. This sensor must be selected from the dropdown
menu on the calibration window for each amperometric sensor.
The temperature correction of the sensor signal is automatically performed by SensorTrace (if this
option is turned on, see above) by applying this formula to the sensor signal:
𝑆𝑖𝑔𝑛𝑎𝑙
𝐶𝑜𝑚𝑝
= 𝑆𝑖𝑔𝑛𝑎𝑙
𝑀𝑒𝑎𝑠
× (𝐴
𝑛𝑢𝑚𝑏𝑒𝑟
)
(𝑇
𝐶𝑎𝑙
− 𝑇
𝑀𝑒𝑎𝑠
)
Where:
•
Signal
Comp
is the temperature compensated signal
•
Signal
Meas
is the non-temperature compensated signal from the sensor
•
T
Cal
and
T
Meas
are the temperatures at calibration and at measuring
•
A
number
is the temperature compensation constant.
The unit for the two
Signal
s is that selected in
Settings
the
Start Experiment
window (Figure 6).
The
A
number
for each sensor is specified on the sensor E
2
PROM under factory calibration. This value
has been obtained as the average value for 8 individual sensors of the same type. It is also possible
for the user to determine this constant for a sensor and to enter it manually in the calibration
window for this sensor.
See the
SensorTrace Suite User Manual
for details on how to calibrate sensors.
