Yokogawa FU20F User Manual

Page 9

IM 12B6J3-04E-E

2.5 Operating range
pH

: 0 to 14

ORP

: -1500 to 1500 mV

: 0 to 100

Temperature
- Dome shape

: -10 °C to 105 °C (14 °F to 221 °F)

- Flat surface

: +15°C to 105°C (59 °F to 221 °F)

Pressure :

Conductivity

: > 50 µS/cm

Note: The pH operating range at room temperature is 0-14 pH, but at high temperatures or

range outside 2-12 pH the lifetime will be seriously shortened.

2.6 Transmission signal (Data + and Data -)
General

: Bi-directional digital communication (RS 485) with

limited MODBUS support

Data rate

: 9600 b/s (8,E,1)

Output function

: pH or temperature compensated pH

ORP, pH compensated ORP, rH

Temperature

Junction resistance value

Sensor details (Model, Serial Number, production date)

Sensor calibration data (zero, slope, temperature offset)

Sensor status signals (e.g. Glass impedance detection)

Note: The output functions and settings of the sensor are accessible using a dedicated

device such as the Yokogawa FLXA analyzer.

2.7 Power supply (Supply+ versus Supply Gnd)
Operating range

: +2.7 to +3.6 VDC

Power consumption

: ≤ 20 mW

Pin #

Signal description

Data -

Data +

Supply +

4 Shield
5

Supply Gnd

Figure 1: Sensor connector (front view)

with gold plated contacts

p(bar)

Temp. (ºC)

-10

105