Product category:
Telemetry, data acquisition + loggers
News Release from: Signatrol | Subject: SL400
Edited by the Processingtalk Editorial
Team on 24 January 2003
New radio link data collector covers
over 300m
The Signatrol claim to be the leading UK supplier of data loggers has been strengthened further by the introduction of their new SL400 Radio Link Data Collector: it collects any data across the plant
The Signatrol claim to be the leading UK supplier of data loggers has been strengthened further by the introduction of their new SL400 Radio Link Data Collector: it collects any data across the plant This system, which allows the user to measure, display and record real time temperature and humidity data, is already finding application in cold stores, supermarkets, warehouses, laboratories, computer buildings, museums, stately homes and art galleries In addition to measuring temperature and humidity, the SL400 can also be configured to measure light level and UV content, vital parameters in buildings where delicate artefacts are stored or displayed
This article was originally published on Processingtalk on 25 Feb 2003 at 8.00am (UK)
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The wireless technology means that the SL400 system offers significant savings in terms of wiring and installation costs, whilst providing the ultimate in flexibility.
Systems can be installed quickly and without any disruption to existing structures or buildings.
One consequence of this is that the SL400 can be used cost effectively for short-term installations.
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A typical system consists of a receiving base station, permanently connected to a PC, and up to 256 remote monitoring stations.
Each station transmits data to the base unit and can have up to four sensor inputs, giving a total capability of 1024 channels per installation.
The frequency of data transmission can be set from 15 seconds up to 90 minutes.
The SL400 uses the latest pan-European, licence free 434 MHz radio transmission frequency, in line with the new style directive 99/5/EC which became mandatory in December 2002.
Each remote transmitter has a built-in long life battery providing up to five years life at a sampling rate of once per 20 minutes, and can be mounted up to 300 m away from the base station, extending to 1000 m with a direct line of sight.
An optimal liquid crystal display is also available to provide local indication of temperature and humidity.
Although one of the main uses for the SL400 is for monitoring temperature and humidity, the unit can be set up to measure almost any physical parameter as long as a suitable transducer is available which provides a milliamp or low level DC signal.
As a result SL400 transmitters can be positioned in strategic locations in industrial plants to measure not only temperature but also pressure, level, flow or load, transmitting back the data to the central location, using additional repeater stations if required.
The Windows based software can be configured to provide the operator with measured values in a variety of standard formats -from simple bar graphs to multi line traces, and graphics can be added which show the location of the remote transmitters.
Live data alarms can be set and using the North Communications COMPASS system, the data can be input into a compatible BMS or Programmable Controller.
An optional network adaptor allows the SL400 to be connected remotely on an existing Ethernet network providing access from anywhere on the local area network.
The base station uses the PC hard disk to store readings.
However, if the computer is turned off, the base station will store readings in its own internal memory for up to a week and then down-load them automatically when the PC is turned on again.
Signatrol offer full support on installing and setting up the SL400 as well as advice on how to get the best out of the system.
The SL400 is just part of the Signatrol extensive range of data loggers and instrumentation.
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