Chemtrac HydroAct HA4, Руководство пользователя

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50 Chapter 3. Sensors
Units
If “User defined” is selected above, set the units using the custom units’ entry screen that will
be displayed when pressing the select button. Otherwise select from an appropriate list of units
for the parameter type.
Precision Select the number of digits following the decimal point to display. This should be appropriate
for the measurement. Options are 0 to 5.
Offline Value This is the value reported by the parameter when in ‘Offline’ mode, for example, if the
sensor is in alarm. Options are within the range of the parameter.
Averaging Enables or disables a rolling average for the parameter to smooth the reading. Options
are “Enabled” or “Disabled”. Selecting “Enabled” will allow editing of the following two form fields.
Length Enter the number of data points in the rolling average buffer. Options are 2..60.
Delay Enter the delay between collecting data points for the rolling average
5
. Options are 200..5000ms.
3.1.4.6 TOC
Parameter settings are accessed by selecting:
Options
→
Setup
→
TOC
Type A selectable list of parameter types. The selection made here will affect what options are
available below.
Name Available if “User defined” is selected as the type. The name can be up to 25 characters.
Units If “User defined” is selected above, set the units using the custom units’ entry screen that will
be displayed when pressing the select button. Otherwise select from an appropriate list of units
for the parameter type.
Precision Select the number of digits following the decimal point to display. This should be appropriate
for the measurement. Options are 0 to 5.
Offline Value
This is the value reported by the parameter when in ‘Offline’ mode, for example, if the
sensor is in alarm. Options are within the range of the parameter.
Averaging Enables or disables a rolling average for the parameter to smooth the reading. Options
are “Enabled” or “Disabled”. Selecting “Enabled” will allow editing of the following two form fields.
Length Enter the number of data points in the rolling average buffer. Options are 2..60.
Delay Enter the delay between collecting data points for the rolling average
6
. Options are 200..5000ms.
3.1.4.7 Modbus Setup
Modbus settings can be accessed by selecting:
5
An averaging delay of 2000ms with a length of 30 will result in a rolling average of 1 minute (30 × 2s) with a reading taken
every 2 seconds. If averaging is enabled it will apply to all aspects of the parameter value, e.g., it will apply to the value displayed,
logged and outputted.
6
An averaging delay of 2000ms with a length of 30 will result in a rolling average of 1 minute (30 × 2s) with a reading taken
every 2 seconds. If averaging is enabled it will apply to all aspects of the parameter value, e.g., it will apply to the value displayed,
logged and outputted.