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UNISENSE TP200 User Manual
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11MEASUREMENTSmounTing The sensorAlthough the Unisense microsensors are made of glass, the tipis flexible and can adjust slightly around physical obstaclesHowever, large obstacles like stones or coarse lateral movementsof the sensor when the tip is in contact with a solid substrate maycause the tip to breakDue to the small size of the microsensor tip and to the steepnessof gradients in many environments, even a displacement of thesensor tip of few microns may change its environmentTherefore we recommend that measurements are performedin a stabilized set-up fixed on a sturdy table free of moving orvibrating devices We recommend the Unisense lab stand LS18and the Unisense micromanipulator MM-33 (MM33-2 double) forlaboratory use For in situ use we recommend our in situ stand(IS19) and a micromanipulatorelecTrical noiseAs well as the physical size, the electrical current generated by thehigh-impedance temperature microsensor is very smallAlthough the Unisense temperature microsensor is quite resistantto electrical noise from the environment, electrical fields mayinterfere with the sensor signal Minimize this by switching offunnecessary electrical/mechanical equipment and avoid touchingsensor or wires during operationOn suspicion of sensor damage, repeat calibration and consult“Troubleshooting”WARNINGAlways introduceand retract thetemperaturemicrosensoraxially using amicromanipulatorand a stable standwhen measuring insolid or semisolidsubstrate likesediment, tissue,biofilms, microbialmats etc. |
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