ATI
Q46C2 2Electode Conductivity System
Part 5
– Configuration
31
O&M Manual
Rev-H (6/19)
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 8 - Calibration for more details.
Cal Zeros
This function calibrates all range zero-points to the specific sensor being
used. This function is only required to be performed once at initial start-
up or when the sensor has been replaced. See Part 8 - Calibration for
more details.
Cell Const
This function allows the user to directly enter the factory measured cell
constant for the Q25C2 sensor. When this feature is used, calibration with
reference solutions is not necessary. See Part 8 - Calibration for more
details.
TC Factor
This function allows the user to directly enter the factory measured
temperature offset value marked on the sensor label. The default for
this setting is 7.50 and most sensors are fairly close to that number
Cond Range
This function allows the user to set the display range of the transmitter for
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 key to modify the range for
the desired range and then press ENTER.
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5.24 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 Q46C2
lock/unlock code.
Press ENTER to toggle lock setting once code is
correct. Incorrect codes do not change state of lock condition.
Set Delay
The delay function sets the amount of damping on the instrument. This
function allows the user to apply a first order time delay function to the
conductivity measurements being made. Both the display and the output
value are affected by the degree of damping. Functions such as
calibration are not affected by this parameter. The
calibration routines
contain their own filtering and stability monitoring functions to minimize the
calibration timing. Press ENTER to initiate user entry mode, and the value
will flash. Use the arrow keys to modify value; range is 0.1 to 9.9 minutes.
Press ENTER to store the new value.
