Metrohm 859 Titrotherm - Manual (Page 30)

6.1 Thermoprobes ￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭
22 ￭￭￭￭￭￭￭￭ 859 Titrotherm
6 Appendix
6.1 Thermoprobes
6.1.1 Various models
The sensors for the 859 Titrotherm are called Thermoprobes. A Thermop-
robe is a temperature sensor that is based on semiconductor technology
(thermistor). It has a short response time of 0.3 s and a high resolution of
10
–5 K. This enables the precise recording of even the smallest of tempera-
ture changes that occur during a titration.
In contrast to potentiometric electrodes, Thermoprobes need not be cali-
brated!
6.9011.020 6.9011.040
Figure 13 Thermoprobes – two models
Thermoprobe with glass shaft
(6.9011.020)
For titrations in aqueous and nonaqueous
media. Not HF-resistant. Thermoprobe with shaft made of PP
(6.9011.040)
For titrations in aqueous media. HF-resistant.
Can also be used in acidic solutions contain-
ing fluoride.
6.1.2 Cleaning and storage
The sensor can be cleaned by rinsing or brief immersion in a suitable sol-
vent. Immerse all openings in the case of the 6.9011.020.
The sensor shaft can be carefully cleaned with a cloth.