ATI Q46H/85 PAA System Part 6 – Configuration
36
O&M Manual
Rev F (8/17)
6.23 Calibration Menu [CAL]
The calibration menu contains items for frequent calibration of user parameters. There are four
items in this list: Cal PAA, Cal Temp, Set Range, and Cal Zero.
Cal PAA The PAA calibration function allows the user to adjust the transmitter
span reading to match a reference solution, or to set the sensor zero
point. See Part 7 – Calibration for more details.
Cal pH The pH calibration function allows the user to adjust the
(if enabled) transmitter offset and span to match the sample or reference buffers.
See Part 7 – Calibration. The temperature calibration function allows the
user to adjust the offset of the temperature response by a small factor of
±5 °C. The temperature input is factory calibrated to very high accuracy.
However, long cable lengths and junction boxes may degrade the
accuracy of the temperature measurement in some extreme situations.
Therefore, this feature is provided as an adjustment. See Part 7 –
Calibration for more details.
Cal Temp The temperature calibration function allows the user to adjust the offset
of the temperature response by a small factor of ±5 °C.The temperature
input is factory calibrated to very high accuracy. However, long cable
lengths and junction boxes may degrade the accuracy of the temperature
measurement in some extreme situations. Therefore, this feature is
provided as an adjustment. See Part 7 - Calibration for more details.
Set Range This function allows the user to set the display range of the transmitter to
a specific application. Once set, all output functions use this display
range to establish configuration settings. Press ENTER to initiate user
entry mode, and the value will flash. Use the arrow keys to modify value;
available ranges include 20.00 ppm, 200.0 ppm, and 2000 ppm. Press
ENTER to store the new value. The display range does not affect the
internal auto ranging scaler that, therefore, sensitivity is to specification
in any user selected range.
6.24 Configuration Menu [CONFIG]
The Configuration Menu contains all of the general user settings:
Entry Lock This function allows the user to lock out unauthorized tampering with
instrument settings. All settings may be viewed while the instrument is
locked, but they cannot be modified. The Entry Lock feature is a toggle-
type setting; that is, entering the correct code will lock the transmitter and
entering the correct code again will unlock it. The code is preset at a
fixed value. Press ENTER to initiate user entry mode and the first digit
will flash. Use arrow keys to modify value. See end of manual for the
Q46H lock/unlock code. Press ENTER to toggle lock setting once
code is correct. Incorrect codes do not change state of lock condition.
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