Settle Method Criteria - Veris U3 Operating Instructions Manual

Pub# OM20-U3-pH

Settle Method Criteria

Figure 16
The electrodes are pre rinsed with water before cycling into the soil. This removes any dust which may
have built up on the electrodes, and establishes moisture for the pH sensor to properly function. A
measurement time of 7-15 seconds is required to allow the pH reading to move from the water pH to a
stabilized soil pH reading. The following settling methods are employed to allow the pH cycle to as quickly
as possible; while also alerting the user to potential issues.
Quick Settle (QS): Electrodes met a superior settle criterion in 8 seconds or less. The reading is stored,
and the cycle continues.
Standard Settle (S): Electrodes met standard settle criteria in less than the maximum settle time (default
12 seconds). The settled reading is recorded in the data file, and the cycle continues.
Time Out (TO): Electrodes didn't settle within the maximum settle time. The reading was recorded;
however, one or both the electrodes didn't meet the standard settle criteria. If 40% of your sensor data falls
in the category, consider increasing your maximum settle time.
Time Out Redo (TORD): Electrodes took longer than the maximum settle time, and the reading had
excessive noise. The software will prompt the user to pull forward 10 feet and redo the sample. No data
point will be logged in file.
Figure 17
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