Hach 900 MAX User Manual
Section 5
Page 71
8990options.fm
pH Probe
Figure 22
pH Probe Wiring to Junction Box (grounded)
Figure 23
pH Probe Wiring to Junction Box (un-grounded)
5.2.2 pH Probe Programming
1.
From the Main Menu, select
OPTIONS>ADVANCED OPTIONS>DATALOG.
2.
Highlight Select Inputs using the
UP
and
DOWN
keys and press
SELECT
.
3.
Highlight pH using the
UP
and
DOWN
keys, then press
SELECT
.
4.
Press the
CHANGE CHOICE
key to cycle between Logged and Not
Logged, then press
ACCEPT
.
5.
Enter a logging interval, then press
ACCEPT
. Valid logging intervals are
shown on the status bar along the bottom edge of the display.
6.
Select another channel to configure or press
RETURN
to back up one
step. Press
MAIN MENU
to return to the Main Menu display.
5.2.3 pH Probe Calibration
Calibrate the pH probe after the pH probe is connected and programmed.
Calibrating the pH probe requires a thermometer and any two of the following
buffer solutions: 4, 7, or 10 pH.
Calibrating the pH probe requires a thermometer and any two of the following
buffer solutions: 4, 7, or 10 pH.
The pH probe is an application sensitive device. When used in harsh
environments, the accuracy and life expectancy of pH probes can decrease.
environments, the accuracy and life expectancy of pH probes can decrease.
Yellow
Green
Clear
pH
Glass
Red
Black
GND
REF
RT
D
D
RT
D
D
Yellow
Green
Clear
pH
Glass
Red
GND
REF
RT
D
D
RT
D
D