pH/mV Temperature Meter
430-020
7 9907X0088 Issue 2
To change the instrument temperature units between °C and °F, press and
hold the MODE key for 3 seconds.
When the instrument is turned on a single press of the CAL and backlight
key will turn the backlight on. Another press will switch the backlight off.
When the backlight is on it will automatically turn off after 10 seconds. If the
low battery icon is showing the backlight function will not work.
If mV is selected instead of pH the instrument will read the voltage generated
by a pH, redox or ion type electrode within the range of ±1000mV.
4
Temperature Adjustment
Model 430-020 is supplied with a temperature probe enabling automatic
temperature compensation to be used. If the probe is disconnected then
manual temperature compensation can be used instead.
4.1 Manual Temperature Adjustment
If the temperature probe is disconnected ‘MANUAL’ will be displayed above
the temperature value. To manually adjust the temperature press or hold the
Up or Down arrow keys to adjust the temperature in whole degrees.
Note that manual temperature adjustment can only be performed if the
temperature probe is not connected.
4.2 Automatic Temperature Correction (ATC)
When the temperature probe is connected the 430-020 meter will
automatically detect the connection and the temperature will be displayed
continuously on the screen. The pH reading will be automatically
compensated depending on the temperature of the sample being measured.
The ATC range is 0 to 100°C (32 to 212°F). If the temperature probe is
removed the temperature will be displayed for 10 seconds.
‘Hi Temp Err’ is displayed if the readings are above 100°C.
‘Lo Temp Err’ is displayed if the readings are below 0°C.