4
Specifications
Calibration
1, 2 or 3 standards to choose among: 147 µS/cm, 1413 µS/cm,
12.88 mS/cm and 80.4 mS/cm at 25 ºC (77 ºF)
Indirect (manual) calibration readjusting any value of conductivity,
salinity, TDS, resistivity or temperature
Manual introduction of the cell constant
TDS conversion factor Programmable between 0.40 to 1.00. Factory setting: 0.64
Relays 2 for limit. Switch N/O. Maximum load: AC < 250 V / < 3 A / < 750 VA
Analogical output
Two 4 to 20 mA outputs. One for conductivity, salinity, TDS or
resistivity and the other for temperature. R. maximum 500 Ohms
DO measuring channel (membrane electrode)
Measuring Range
% 0 to 500
ppm 0 to 50
Temperature 0 to 50 ºC (32 to 122 ºF)
Resolution
%0.1
ppm 0.01
Temperature 0.1
Measuring error
(± 1 digit)
% ≤ 0.1%
ppm ≤ 0.1%
Temperature ≤ 0.4 ºC (≤ 0.72 ºF)
Temperature compensation With NTC probe integrated inside the sensor
Salinity compensation Automatic with manual entrance by keypad
Pressure compensation Automatic with manual entrance by keypad
Calibration
In 1 point, in air, relative humidity 100%
Indirect calibration or manual readjustment at any DO value in % or
ppm
Relays 2 for limit. Switch N/O. Maximum load: AC < 250 V / < 3 A / < 750 VA
Analogical outputs
Two 4 to 20 mA outputs. One for D.O. and the other for temperature.
R. maximum 500 Ohms
DO measuring channel (optical electrode)
Measuring Range
% 0 to 250
ppm 0 to 25
Temperature 0 to 60 ºC (32 to 140 ºF)
Resolution
%0.1
ppm 0.01
Temperature 0.1
Measuring error
(± 1 digit)
% ≤ 0.1%
ppm ≤ 0.1%
Temperature ≤ 0.5 ºC (≤ 0.9 ºF)
Calibration
In 2 points, one of them 0.00 ppm
Indirect calibration or manual readjustment at any DO value in % or
ppm
Reset of calibration
Relays 2 for limit. Switch N/O. Maximum load: AC < 250 V / < 3 A / < 750 VA
Analogical outputs
Two 4 to 20 mA outputs. One for D.O. and the other for temperature.
R. maximum 500 Ohms
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