Crison 44 - D.O. Channel (optical sensor)

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Operation
Figure 16 DO (optical sensor) channel
For DO electrode connection (code 60 31) refer to Figure 17.
Figure 17 DO electrode’s connection
4.8.2 Programming
The factory programming of the instrument is the following:
• Measuring units: ppm.
• Sensor data: automatically recognized after connection.
• Relays for limits and alarm: deactivated.
• 4-20 mA output for DO and temperature: deactivated.
• Hold. Last value.
To modify the factory programming and adapt the instrument to the application:
Note: During programming, the relays of the corresponding channel are deactivated. 4-20 mA
output (register) is in Hold (21 mA or last value).
1. Press ESC to access to the MAIN MENU.
2. Introduce the code 100 and accept with OK
3. Select SYSTEM. Press OK to confirm
4. Select PROGRAM CHANNEL and then the channel to configure.
1 Dissolved Oxygen (DO) 2 Temperature 3 Common
Relays
D.O.
(Optical)
DO Sensor (O)
1 2 3
1 White cable: To terminal 1 4 Black cable: To terminal 4
2 Green cable: To terminal 2 5 Metallic: To terminal 5
3 Red cable: To terminal 3
1 2 3 4 5