HYDROSENSE HS2410
Revision 5.0
P a g e 18 | 27
6.0 CALIBRATION
SETUP
(<CALIB>
K
EY
)
NOTICE
To access the calibration settings, you will require a password. The
password is ‘2000’.
NOTICE
Calibration must be performed after installation and any lamp
replacement.
NOTICE
Allow a minimum of 24 hours of power up prior to calibration to allow
the lamp to stabilize.
Using actual process stream flows for the calibration is desirable to provide the best accuracy. This will
zero out any background influences that may be present in the process water. At least two points of
entry at different contaminant levels are required. These levels may initially be unknown for calibration
purposes and entered in manual calibration at a later date after laboratory results are returned. One of
these points may be clean process water (0 PPM hydrocarbons).
Prepared samples may be used for calibration and testing although variations in personal blending
techniques, the source of the hydrocarbon and background water, the container used, and the retention
time prior to use will all play a part in the concentration reliability and repeatability.
6.1 BEFORE
CALIBRATION
Open the sample chamber door. Lift the Lamp Blue Box off the tray and place it on the door brackets.
Check that the flow plate is resting securely in place against the tray. The flow plate has a special
reflective core and MUST be placed in the tray with the etched “UP” side facing out (toward you).
Slowly open the process stream valve to allow a steady and even flow over the flow plate. Check that
the outfall is draining well and water is not building up in the drain tray. Verify that the flow plate is
evenly and completely covered with the flowing water. The sample flow may not initially cover the whole
flow plate by itself. Stir up the flow plate by rubbing the flow plate so the water sheens evenly and
completely across the flow plate as it flows. Place the Lamp Blue Box back against the tray and secure
it with the retaining latch. Close the chamber door. Make sure the Sample Chamber Door is closed
tightly. The door MUST be closed to eliminate any background light interference during and after
calibrations.
6.2 CALIBRATION
For Calibration, the Hydrosense 2410 can accept up to 5 sample points to draw a calibration curve. A
calibration curve is used because some samples may not be linear as concentrations increase.
6.2.1 AUTOMATIC CALIBRATION <1-AUTO>
Press <CALIB> key, enter password at the prompt, then 1-AUTO.
Press <ENTER> to proceed to 1
st
calibration. Normally, the 1st point is clean process water (0.0 ppm).
Manually put the handle of the 3 way valve to the “up” position and let the clean process water flow
through the Hydrosense 2410. Enter the ppm value (0.0). Once the reading (FLR rdng) has stabilized,
press <ENTER> key. The display will now proceed to the second point.
A different concentration of contaminated water is required. If the process stream has a different
concentration than 0 ppm, put the handle of the 3 way valve to “down” position to allow the process
stream to flow through the Hydrosense 2410.
