Finding and Setting a Sampling Interval

A sampling interval is the frequency at which the device samples the relevant sensor for data. For example, a sampling interval of 5 minutes means that the device samples the sensor every 5 minutes. The sampling interval is defined for a group. All channels in the group have the same sampling interval,  which can be viewed and changed.

Changing the sampling interval changes the sampling interval of every channel in the same sample group.

The minimum sampling interval is determined by the sensor. Typical sampling frequency ranges from once every 5 minutes, 30 minutes, or hourly, but it can include anything in between. While sampling frequency can be reduced to shorter intervals such as once per minute, it is recommended  that these types of applications include an external power supply to reduce battery replacement frequency.

To find and set a sampling interval value:

1. In the left pane, click Devices. 
2. In the Sites Tree pane, click the device name.
3. In the right pane, click the Configuration tab. The Stream Management table is displayed.
4. In the Stream Management table, select Data Streams in the top right drop-down box.
5. To find the sampling interval value, check the value in the channel’s Sample Interval column. The value is displayed in minutes. 
6. To set the sampling interval value, do the following steps:

1. 1. In the Stream Management table, hover your mouse pointer over the channel of the group whose sampling interval you wish to modify. 
   2. Click on the green pencil icon  at the right end of the line. The Update Sampling Interval for Group window opens.
   3. In the Update Sampling Interval for Group window, modify the value of the sampling interval in seconds.
   4. If you changed the sampling interval, the new sample interval will take effect only after the next transmission of the device.