Crison 44 - Conductivity channel (EC)

27
Operation
• Slope: 59.16 mV/pH
• Temperature: 25 °C
This is a previous step of obtaining calibration certificate.
4.5.4 Measurement
The measured values by the 3 channels and the corresponding temperatures appear on
the display.
If there is not a temperature probe connected to channel 1, the temperature can be
introduced manually or use the temperature reading from channel 2 when the two sensors
are installed in the same measuring point.
For manual introduction of the temperature press the OK key and the down key during 2
seconds. Introduce the temperature value using the up and down keys. Wait 2 seconds to
fix the value.
It there’s a A.T.C. connected the instrument can make a temperature readjustment, see
detailed information at 4.16 Temperature readjustment, °C or °F, page 54.
Redox potential measurement
To measure redox, the measuring units should be mV, see section 4.5.2, page 23.
The temperature can be measured if a temperature probe ATC Pt 1000 is connected.
The redox potential of a solution is affected by the temperature. Nevertheless, the
instrument does not perform any compensation. For this reason, it is not possible to select
manually the process temperature.
4.6 Conductivity channel (EC)
4.6.1 Connections
Figure 12 Conductivity channel
DANGER
Always disconnect power to the instrument when making any electrical connections.
DANGER
Relays: Limit the current up to 3A by using one fuse. Do not connect cables with voltage higher
than 24 V.
1 Conductivity (EC) 2 Temperature 3 Common
Ground
Relays
E.C.
(Conductivity)
Cell
1 2 3