Hach-Lange SI794 D User Manual - Manual (Page 90)

O
2
input Type A sensor: Hamilton Oxyferm, Oxysens
Type B sensor: Hamilton Oxygold
Measuring current -2 ... 1800 nA
Resolution 0.05 nA
(with Vpol ≤ 800 mV and Vref ≤ 200 mV)
Saturation (-10 ... 80 °C) 0... 500 %
Measurement error 1,2,3 0.5 % meas.val. + 0.5 %
Concentration (-10 ... 80 °C) 0.00 ... 50.00 mg/L
0.00 ... 50.00 ppm
Measurement error 1,2,3 0.5 % meas.val. + 0.05 mg/L
or 0.05 ppm
Permissible guard current ≤ 20 µA
Polarization voltage * 0 ... 1000 mV
Process pressure * 0 ... 9.999 bars
( ... 999.9 kPa / ... 145.0 PSI)
Salinity correction * 00.00 ... 45.00 g/kg
Sensor standardization
Operating modes * O
2
saturation (automatic)
O
2
concentration (automatic)
Product calibration
Zero calibration
Calibration range Zero point ± 2 nA
Sensor Type A Slope 25 ... 130 nA
(at 25 °C, 1013 mbars)
Calibration range Zero point ± 2 nA
Sensor Type B Slope 200 ... 550 nA
(at 25 °C, 1013 mbars)
Calibration timer * 0000 ... 9999 h
Pressure correction * 0.000 ... 9.999 bars / 999.9 kPa / 145.0 PSI
Sensocheck Monitoring for short circuits / open circuits
(can be disabled)
Sensoface Provides information on the sensor condition
evaluation of zero point/slope, response time,
calibration interval, Sensocheck
Specifications
90