UNISENSE TP-MR, User Manual

11

MEASUREMENTS

m

ounTing

The

sensor

Although the Unisense microsensors are made of glass, the tip 
is flexible and can adjust slightly around physical obstacles . 
However, large obstacles like stones or coarse lateral movements 
of the sensor when the tip is in contact with a solid substrate may 
cause the tip to break . 

Due to the small  size of the microsensor tip and to the steepness 
of gradients in many environments, even a displacement of the 
sensor tip of few microns may change its environment . 

Therefore we recommend that measurements are performed 
in a stabilized set-up fixed on a sturdy table free of moving or 
vibrating devices . We recommend the Unisense lab stand LS18 
and the Unisense micromanipulator MM-33 (MM33-2 double) for 
laboratory use . For in situ use we recommend our in situ stand 
(IS19) and a micromanipulator . 

e

lecTrical

noise

As well as the physical size, the electrical current generated by the 
high-impedance temperature microsensor is very small .
Although the Unisense temperature microsensor is quite resistant 
to electrical noise from the environment, electrical fields may 
interfere with the sensor signal . Minimize this by switching off 
unnecessary electrical/mechanical equipment and avoid touching 
sensor or wires during operation .

On suspicion of sensor damage, repeat calibration and consult 
“Troubleshooting” .

WARNING

Always introduce 

and retract the 

temperature  

microsensor 

axially using a 

micromanipulator 
and a stable stand 

when measuring in 

solid or semisolid 

substrate like 

sediment, tissue, 

biofilms, microbial 

mats etc.