Xylem WTW Oxi 3210, Operating Manual

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Operation Oxi 3210
32 ba75795e07 10/2021
Calibration datasets The Oxi 3210 administrates two sets of calibration data:
Sensors of different types can be calibrated separately from each other.
When one sensor type is calibrated, the calibration data of the other
type remain stored. The Oxi 3210 recognizes the type of the connected
sensor and automatically uses the correct calibration data.
Calibration procedures The Oxi 3210 provides as the calibration procedure:
Calibration in water vapor-saturated air.
Use an OxiCal
®
air calibration vessel for calibration.
Stability control
(AutoRead)
In calibration, the Stability control function (AutoRead) is automatically
activated.
Display calibration data You can have the data of the last calibration displayed (see section
4.4.5).
Calibration evaluation After calibration, the meter automatically evaluates the current status of
the calibration. The evaluation appears on the display and in the cali-
bration record.
Calibration in
water vapor
saturated air
(air calibration vessel)
Proceed as follows to calibrate the instrument:

Set 1 for the type, "CellOx":
– CellOx 325

Set 2 for the type, "DurOx":
– DurOx 325
Display Calibration record Relative slope
+++ S = 0.8 ... 1.25
++ S = 0.7 ... 0.8
+ S = 0.6 ... 0.7
Error Error
S < 0.6 or S > 1.25
Eliminate the error according to
chapter 6 W
HAT TO DO IF
...
1 Connect the D.O. sensor to the meter.