Hach-Lange HQD Portable Meter User Manual - Manual (Page 15)

• the LDO sensor cap should be replaced
• the calibration is out of range
• the calibration results are outside acceptance criteria settings
About sample measurements
Each probe has specific preparation steps and procedures for taking
sample measurements. For step-by-step instructions, refer to the
documents that are included with the probe.
About check standards
Run Check Standards verifies equipment accuracy by measuring a
solution of a known value. The meter will indicate if the Check Standard
passed or failed. If the Check Standard fails, the calibration icon
is
shown until the probe is calibrated.
The meter can be set to automatically show a reminder for check
standard measurement at a specified interval with a specified
acceptance criteria. The reminder, value of the check standard, and
acceptance criteria can be changed. For step-by-step instructions, refer
to the documents that are included with the probe.
Use a sample ID
The sample ID tag is used to associate measurements with a particular
sample location. If assigned, stored data will include the sample ID.
1. Push the key.
2. Select, create or delete a sample ID:
Option Description
Current ID Select an ID from a list. The current ID will be
associated with sample data until a different ID is
selected.
Create a New Sample
ID Enter a name for a new sample ID.
Delete Sample ID Delete an existing sample ID.
Use an operator ID
The operator ID tag associates measurements with an individual
operator. All stored data will include the operator ID.
1. Push the key.
2. Select, create or delete an operator ID:
Option Description
Current ID Select an ID from a list. The current ID will be
associated with sample data until a different ID is
selected.
Create a New
Operator ID Enter a name for a new operator ID (maximum
10 names can be entered).
Delete Operator ID Delete an existing operator ID.
Data management
About stored data
The following types of data are stored in the data log:
• Sample measurements: stored automatically each time a sample is
measured in the Press to Read or Interval Mode. When the
continuous measurement mode is used, data is stored only when
Store is selected.
• Calibrations: stored only when Store is selected at the end of a
calibration. Calibration data is also stored in the IntelliCAL (R) probe.
• Check standard measurements: stored automatically each time a
check standard is measured (in the Press to Read or Interval Mode).
When the data log becomes full (500 data points), the oldest data point
is deleted when a new data point is added. The entire data log can be
deleted to remove data that has already been sent to a printer or PC
(
key > Delete Data Log). To prevent deletion of the data log by a
user, use the Security Options menu.
English 13