Hach-Lange ISECL18103 User Manual - Manual (Page 2)

Figure 1 Probe overview
1 Sensor protection cap 3 Sensing element
2 Reference junction 4 1 or 3 m (3.28 or 9.84 ft) cable
Preparation for use
Prepare the probe for use before calibration or sample measurement.
1. Remove the sensor protection cap from the probe.
2. Rinse the probe with deionized water. Blot dry with a lint-free cloth.
Note: Prior to use, the probe must be conditioned for at least 30 minutes in 25 mL of the lowest
concentration standard solution in the calibration set.
If probe stabilization is slow after storage, condition the probe for up to one hour in 25 mL of
the lowest concentration standard solution in the calibration set.
Calibration
Before calibration:
The probe must have the correct service-life time stamp. Set the date and time in the meter before the probe is attached.
It is not necessary to recalibrate when moving a calibrated probe from one HQd meter to another if the additional meter is
configured to use the same calibration options.
Default calibration standard set for ISECl181 probe requires 100, 1000 and 12500 mg/L Chloride standard solutions. A new
method can be made if custom calibration or measurement settings are needed. Refer to
Advanced operation on page 7
for a list of additional calibration sets.
To view the current calibration, push , select View Probe Data, then select View Current Calibration.
If any two probes are connected, push the UP or DOWN arrow to change to the single display mode in order to show the
Calibrate option.
Prepare the probe for use (refer to Preparation for use on page 2).
Calibration notes:
• Stir the standards and samples at a slow and steady rate to prevent the formation of
a vortex.
• Additional standard sets along with the minimum number of calibration points can be
selected on the Calibration Options menu.
• Push Skip to omit a standard from the calibration routine. The display will not show
Skip until the minimum number of standards is met.
• Begin with the lowest concentration during calibration. This reduces carry-over
contamination to give the best results.
• Note the temperatures of the standards during calibration. Keep temperatures
between calibration standards within ±2 ºC for optimal results.
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