YOKOGAWA FU20, User Manual

Page: 8 / 15

IM 12B07K02-01E
< 1. Specification >
1-1
1. Specification
The Model FU20 offers a simple and cost effective solution for a wide variety of waste water and
process applications. This all-in-one sensor provides simultaneous measurement of pH, ORP
and temperature. The rugged Ryton body is designed for easy installation into on-line via the 3/4
inch tapered threaded connections provided on both ends of the sensor.
1.1 Standard Specifications
Measuring range: pH; 2 to 12 ORP; -1500 to 1500 mV
Solution temperature : -5 to 105°C (sensor only, sample is not freezed)
Solution pressure :
0 to 1 MPa (sensor only)
Solution conductivity : 50 µS/cm or higher
Solution flow velocity : 2 m/s max.
Internal electrolyte:
Saturated KCl (Non refillable)
Temperature sensor : Pt1000 (Note)
Body materials: Ryton (PPS 40GF)
Weight: Approx. 0.5 kg (Body)
Storage temperature: -10 to 50 °C
Applicable Liquid Analyzer/converter: FLXA202/FLXA21 2-Wire Liquid Analyze,
FLXA402 4-Wire Converter, PH450G pH/ORP converter
Applicable holder: Special order for PH8HG, HH350G with optional adapter, cannot be
used with HH350G/-JT.
Note: The temperature sensor included in the FU20 is intended to provide indication and cell compensation. The construction has not
been tested to the pressure vessel standards required for plant temperature control.
NOTE
Cautions for using the FU20 sensor
Note that the FU20 sensor has limited life which depending on installation process.
Be careful not to allow liquid junction and glass of the pH sensor to dry out.
When storing the sensor, be sure to attach the protective cap (supplied with it on shipment) to its tip.
The sensing glass membrane of the pH sensor gradually deteriorates during storage.
A virgin pH sensor may become unusable because of its deterioration. Avoid storing the sensor
for a long time (Use within a year is recommended).
1.2 Model and Suffix codes
Model Suffix Code Option Code Description
FU20 ................................... ................... Wide body Sensor
Type -05
-10
...................
...................
Fixed cable 5 meter
Fixed cable 10 meter
Temperature element -T1 ................... Pt1000
Model -NPT ................... Dome shape model
Note: Special order is needed for using with PH8HG drop-in guide pipe.
4th Edition : Nov.20,2018-00