
6.
The operating status of the offset function (ON or OFF) is dis‐
played in the upper line of the display. Use the UP/DOWN
keys to change this status to ON. Then press the EXIT key to
acknowledge the setting and move to the setting menu
7.
This adds or subtracts the value of the offset to / from the
measured NTU value. For instance, if the sensor measures
the process as being 0.36 NTU, but the laboratory device dis‐
plays the sample as being 0.12 NTU, then the sensor will
show 0.12 NTU by the addition of an offset of -0.24.
8.
Use the UP/DOWN keys to select the required offset level.
Then press EXIT to acknowledge the setting.
ð
The offset configuration is now completed.
A3424
Fig. 48: Offset
9.
The device returns to AUTO mode, with the offset being
mathematically taken into account with the measured value.
7.1.8 Calling up data
The data is available in different forms. The data can be displayed
on the screen, logged in the device, read via Modbus or output via
4 ... 20 mA.
7.1.8.1 USB connector
The USB connection can be used to upload new software or down‐
load data and calibration reports using a USB flash drive. Firmware
updates are performed by loading the firmware onto a USB flash
drive and inserting this flash drive into the USB connector of the
DULCO turb C. The update has no impact on configurations or
saved data, but it is always advisable to check the configuration as
menus can change.
7.1.8.2 File downloads
All the files are downloaded in a CSV format (values separated by
commas). These files can be imported directly into most spread‐
sheet and database programs.
The main data includes date, time, measured value, units, Alarm 1
and Alarm 2. The device ID forms part of the file name.
Several examples of data are listed below.
Date
Time
Read
Unit
Alarm 1
Alarm 2
2017/9/6
16:01
0.024
NTU
Off
Off
2017/9/6
17:02
0.023
NTU
Off
Off
Operation
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