HYDROSENSE HS2410
Revision 5.0
P a g e 19 | 27
If the concentration of process stream is close to 0.0 ppm, a prepared sample (refer to Section 10.0)
and a sample pump will be used. Disconnect the inlet of clean water and connect the prepared sample
into the inlet. Pump the prepared sample through the Hydrosense 2410.
Press <ENTER> to input ppm value of the 2nd point. Enter the known or unknown
*
ppm value of
stream concentration (i.e., 30.0 PPM). Once the reading (FLR rdng) has stabilized, press the <ENTER>
key.
*
If the ppm value is unknown, enter a random value that would be indicative of what is flowing through
the unit and take a sample by opening grab sample take off valve at the same time. After finishing turn
back the valve to close position. Send the sample for lab analysis promptly. Record the FLR signal
value on the bottom line of the display. The laboratory ppm value and corresponding FLR reading (FLR
rdng) will be entered in manual calibration at a later date.
Press <0> to finish calibration OR Press <ENTER> to continue to third calibration and repeat the
above procedure for each additional concentration level. A minimum of two inputs is required.
THIS COMPLETES THE CALIBRATION IF KNOWN VALUES WERE ENTERED.
If random unknown
values were entered, the laboratory results will need to be entered in manual cal (see Section 6.2.3) to
correct the values of the samples.
6.2.2 MANUAL CALIBRATION WITH LABORATORY RESULTS
When the lab results have been returned, press the <CALIB> key, enter the password at the prompt,
then press <2> for Manual Calibration.
Press <ENTER> to proceed to 1st point value. Your initial ppm value will be displayed. If a grab sample
was taken for this point, key in the lab value of sample in PPM and press <ENTER>. Otherwise, Just
press <ENTER>. The unit will prompt you to enter a FLR value in mV. This was recorded for you when
you first took the grab sample. Press <ENTER> to accept this and proceed to 2
nd
calibration point (2
nd
point).
Press <ENTER> to procced to 2
nd
point value.
Key in the lab result in PPM of Sample # 2 if a grab sample was taken and press <ENTER>. Otherwise,
Just press <ENTER>. The unit will again prompt you to enter a FLR value that corresponds to your
sample. Press <ENTER> to accept this value.
Press <ENTER> to continue calibration and repeat the above procedure for each sample.
Press <0> to finish calibration, then press <DISPLAY> to main display menu.
THIS COMPLETES THE MANUAL CALIBRATION.
6.2.3 GAIN
SETTING
The FLR signal gain is typically factory set and should only be modified if directed by an Arjay
Engineering representative. The procedure to change the gain is as follows:
Press the <CALIB> key, enter the password at the prompt, then press <4> to Set Gain.
Enter the new gain value then press <ENTER>. Note: the actual gain set may differ than the desired
value due to the resolution of the gain setting circuitry. The actual gain will be displayed if the gain
setting menu is re-entered.
Press <DISPLAY> to main display menu.
