<1. INTRODUCTION AND GENERAL DESCRIPTION>
1-1
IM 12A01A02-01E 8th Edition : Oct. 01, 2015-00
1. INTRODUCTION AND GENERAL
DESCRIPTION
This manual describes how to use the FLXA202/FLXA21 with Yokogawa’s or other companies’
sensors. Please read carefully this manual and the instruction manual of the relevant sensor
before using this instrument.
For the speciîš¿cations of the FLXA202/FLXA21, please refer to the General Speciîš¿cations (GS
12A01A02-01E) in the attached CD-ROM.
The FLXA202/FLXA21 2-Wire Analyzer can perform 4 kinds of measurements – pH/ORP
(oxidation-reduction potential), contacting conductivity (SC), inductive conductivity (ISC) or
dissolved oxygen (DO) – with the respective sensor module.
For the pH/ORP measurement, the FLXA202/FLXA21 can be connected to conventional analog
pH/ORP sensors, and to Yokogawa’s digital sensor, FU20F pH/ORP SENCOM Sensor with the
respective sensor module.
The FLXA202/FLXA21 can perform single or dual sensor measurement. For dual sensor
measurement, the combination of two same type sensor inputs – pH/ORP and pH/ORP (analog
sensor only), SC and SC, and DO and DO –are available with two sensor modules.
When using with the pH/ORP SENCOM sensor, please refer to the section 15, 16 and 17 of this
manual for the operation, commissioning and calibration respectively.
1
ON
2
ON
Cable entry holes
Jumper holder
(provided only for
pH measurement)
Front view
Front view with the front panel opened
Reboot switch
(Do not use it)
Terminal block
for power supply
LCD display
Slide switch
(for HART only)
Front panel
The first module
(The second module if any
is installed here.)
Figure 1.1 FLXA202 Parts names and descriptions
1
PH
SC
ISC
DO
SENCOM
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