wtw NitraLyt 700 IQ, Руководство по эксплуатации, Страница: 40 / 61

Calibration and measuring NitraLyt
®
700 IQ
4 - 20 ba75397d03 12/2004
4.1.10 Calibration result
Calibration evaluation After calibrating the system automatically evaluates the calibration data
and current state of the sensor. The drift potential and slope are evalu-
ated separately. For a valid calibration, the values have to be within the
following ranges:
Add standard to sample Confirm with
g
.
* Wait for a stable measured
value. Confirm with
g
.
The measurement begins.
Cal.: DOUBLE STD. ADD. (5)
Reference voltage determined
after first standard addition Confirm with
g
.
Add standard to sample Confirm with
g
.
* Wait for a stable measured
value. Confirm with
g
.
The measurement begins.
Cal.: DOUBLE STD. ADD. (5)
Reference voltage determined
after second standard addition Confirm with
g
.
Calibration successful
Conc. (NO3-N)
x mg/l
Slope y mV*
Drift voltage z mV
End of DOUBLE STD ADD (5) cal.
The values for Conc. (NO3-N) ,
Slope and Drift voltage are dis-
played.
Calibration is complete. Confirm
with
g
.
The display returns to the mea-
sured value display.
Display Explanation
Slope: -50 ... -70 mV
Drift potential: -100 ... +100 mV