ATI
Q45D/60 Dissolved Oxygen System
Part 5 – Configuration
O & M Manual
Revision C (7/09)
32 -
5.22 Measure Menu [MEASURE]
The default menu for the system is the display-only menu MEASURE. This menu
is a display-only measurement menu, and has no changeable list items. When
left alone, the instrument will automatically return to this menu after
approximately 30 minutes. While in the default menu, the UP arrow allows the
user to scroll through the secondary variables on the lower line of the display. A
brief description of the fields in the basic transmitter version is as follows:
TRANSMITTER MEAS SCREENS:
25.7C
Temperature display. Can be displayed in C or F,
depending on user selection. A small “m” on the left side of
the screen indicates the transmitter has automatically
jumped to a manual 25C setting due to a failure with the
temperature signal input.
320 mV
Raw sensor signal. Useful for diagnosing problems.
100% 20.00 mA
PID Status screen (if enabled.) Shows the present controller
output level on left, and actual transmitter current on the
right. The controller can be placed in manual while viewing
this screen by pressing and holding the ENTER key for 5
seconds until a small flashing “m” appears on the screen. At
that point the controller output can be adjusted up or down
using the UP and LEFT arrow keys. To return to automatic
operation, press and hold the ENTER key for 5 seconds and
the “M” will disappear.
20.00 mA
Transmitter output current.
Slope = 100%
Sensor output response vs. ideal calibration. This value
updates after each calibration. As the sensor ages, the slope
reading will decay indicating sensor aging. Useful for
resolving sensor problems.
Offset = 0.0 mV
Sensor output signal at a zero ppm input. This value updates
after a zero-calibration has been performed. Useful for
resolving sensor problems.
