Yokogawa FU20F User Manual
Page 9
IM 12B6J3-04E-E
9
2.5 Operating range
pH
: 0 to 14
ORP
: -1500 to 1500 mV
rH
: 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
1
Data -
2
Data +
3
Supply +
4 Shield
5
Supply Gnd
2
1
5
4
3
Figure 1: Sensor connector (front view)
with gold plated contacts
p(bar)
Temp. (ºC)
-10
25
50
105
0
5
0
10