YOKOGAWA FLXA402, Установка и подключение

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<2. WIRING AND INSTALLATION>
2-18
IM 12A01F01-02EN 2nd Edition : Feb. 19, 2019-00
2.6.1 Wiring the pH/ORP sensor
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pH Measurement
Conventional pH sensors are connected to the module as follows:
11 Temperature
12 Temperature
13 Reference
14 Solution ground
15 Glass (measure)
16 Shield
17 Shield
FLXA402
REF TC PH Liquid
Earth
In addition to the wiring of the sensor, insure that a jumper for low-impedance sensor inputs
is installed. Two jumpers are supplied with each module. Keep unused jumpers in the jumper
holder to avoid losing them.
• pH Glass Electrode is a high impedance sensor input
• Standard reference electrodes and an ORP/REDOX electrode are low impedance sensor
inputs
• Special electrodes using 2 glass sensors (example: Pfaudler, SC24V) do not need jumpers.
Terminals 15-19 are identified as input 1 (High Impedance) and terminals 13-18 are defined as
input 2 (Low Impedance). For conventional pH sensors, the jumper is placed as illustrated:
Input 2
Glass sensor on Input 1
Reference sensor on Input 2
Input 1
Store jumpers that you do not use in the jumper holder.