© 2018 Valeport Ltd
Specifications
Page 5
2.2. Optionally Fitted Sensors
The following sensors may be optionally fitted:
Turbidity
DO
pH
Redox (ORP)
PAR
Type:
Seapoint
Oxyguard
Pressure
Balanced
Electrode
Pressure
Balanced
Electrode
BioSpherical
See manufacturer's
datasheet
Range:
0 to 2000FTU (max)
0 to 200%
2 to 12
0 to 1000mV
Accuracy:
± <2% to 750 FTU
±1% of
measured
value
± 0.1
± 0.1mV
Resolution:
0.005% FS
0.005% sat
0.001
0.01
Note that all these sensors give an analogue output signal (either volts or amps) as standard – the
accurate measurement of this signal is the function of the primary sensor calibration, which is given in
the calibration section of this manual. This primary calibration has a high level of long-term stability,
and should not need to be rechecked any more often than the conductivity, temperature or pressure
sensors – typically every one or two years depending on the customer’s own requirements.
However, this primary data output may be subjected to a secondary, or “User” calibration within the
instrument, so that the output is converted into engineering units, for example mg/l. Details of how
to perform these User calibrations are given in a separate manual.
