5-20 Parameter setting
IM 12B6B3-E-H
5-3-2. Temperature compensation and measuring functions.
Code 10
T.SENS
Selection of the temperature compensation sensor. The default selection is the
Pt1000 Ohm sensor, which gives excellent precision with the two wire connec-
tions used. The other options give the flexibility to use a very wide range of other
pH sensors.
Code 11
T.UNIT
Celsius or Fahrenheit temperature scales can be selected to suit user preference.
Code 12
T.ADJ
With the process temperature sensor at a stable known temperature, the temper-
ature reading is adjusted in the main display to correspond. The calibration is a
zero adjustment to allow for the cable resistance, which will obviously vary with
length.
The normal method is to immerse the sensor in a vessel with water in it, measure
the temperature with an accurate thermometer, and adjust the reading for agree-
ment.
Code 13
T.COMP
Process compensation automatically allows for changes in the pH of the process
with temperature. The characteristic of each process will be different, and the
user should determine if this feature is to be activated, and what compensation
figure to choose.
The compensation is given in pH per 10 °C.
Example:- For pure water with an alkali dose, (e.g. boiler feed water) a coefficient
of approx. 0.35pH can be expected. However, applications vary and
a simple test will determine what if any coefficient is suitable for the
process.
Содержание PH402G
Страница 1: ...Instruction Manual Model PH402G pH Converter IM 12B6B3 E H 7th Edition YOKOGAWA...
Страница 2: ......
Страница 6: ...IM 12B6B3 E H...
Страница 26: ...IM 12B6B3 E H...
Страница 49: ...Parameter setting 5 17 IM 12B6B3 E H 5 3 Notes for guidance in the use of service coded settings...
Страница 68: ...IM 12B6B3 E H...
Страница 76: ...IM 12B6B3 E H...
Страница 82: ...IM 12B6B3 E H...
Страница 93: ...IM 12B6B3 E H...