Metrohm 827 pH lab User Manual Page 59

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9 Appendix
826/827 pH meter, Instructions for Use 51
9 Appendix
In this section you will find the most important technical data of the pH
meter, dialog structures, a list of standard accessories and optional ac-
cessories as well as warranty and declarations of conformity.
9.1 Technical data
Provided that nothing to the contrary is mentioned, the published val-
ues represent the typical data of the 826 pH mobile and the 827 pH
lab.
9.1.1 Measuring modes
Measuring mode Prim. measured
quantity
Sec. measured
quantity
pH pH T
Temperature T
Potential U
9.1.2 Measuring inputs
Potentiometric
for pH value, potential
- 1 high-impedance measuring input for pH, redox and ISE electrodes
- 1 reference input for separate reference electrode
Input resistance > 1 * 10
12
Ohm (under reference conditions)
Temperature
Also for automatic temperature compensation
- 1 measuring input for temperature sensors (Pt1000 or NTC)
NTC characteristics configurable
Default values R (25°C) = 30'000 Ohm / B
25/50
= 4100
Measuring interval
Measuring cycle 1 s for all measuring modes
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