Rfl100 Overview; Delays In A Vainet Network - Vaisala RFL100 Guía Rápida

RFL100 Overview

Vaisala RFL100 Data Logger is a completely wireless, battery powered data logger. It supports
several types of Vaisala humidity and temperature measurement probes. RFL100 is intended
as a data collection point in a Vaisala viewLinc Monitoring System.
VaiNet wireless
>100 m (328 ft) range
RFL100
Data Loggers
Figure 5 Connecting RFL100 to the viewLinc Monitoring System
The wireless connection of the RFL100 requires a Vaisala AP10 Access Point. AP10 can connect
up to 32 loggers to the viewLinc Monitoring System, and you can have up to 8 access points in
range of each other. In a typical indoor space, install the AP10 within 100 meters (328 ft) of the
RFL100. In an open space with line-of-sight and no interfering structures, the range can be
over 500 m (1640 ft). The wireless connection operates on 868 MHz or 915 MHz frequency
band depending on the model.
RFL100 is optimized for low power operation. It reads the probe once a minute, and transmits
measurement data to the access point every four minutes. Because the radio link is not
continuous, remote management actions and system joining status may take some time to be
updated on the display of the data logger.
Before you start installing RFL100 Data Loggers, install the viewLinc Enterprise
Server and at least one AP10 Access Point within range of the RFL100. This way
RFL100 can immediately discover your access point and join your system.
For more information on viewLinc Monitoring System installation, see viewLinc
Setup Guide (M211820EN).

Delays in a VaiNet Network

VaiNet protocol and VaiNet devices are designed for power-efficient operation. Some of the
design choices that enable long battery life also create significant delays that the users should
be aware of.
Intermittent Radio Connections
Radio connections between VaiNet access points and data loggers are not continuous. Access
points take turns communicating in a two-minute cycle, and connected data loggers send their
measurement data to their connected access point every four minutes. This introduces various
delays:
Wired
network
AP10
Access Point
NTP Server
viewLinc
Enterprise Server
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