Data Acquisition Units - Data Loggers

A data logger or datalogger is an electronic device that is used in conjunction with a computer to monitor or record various signals.

The data logger may have internal sensor(s) so it measures where it is located or it may have one or a number of channels where external sensors can be connected. Some data loggers can be configured to accept a wide range of sensors.

Using the computer, the data logger is programmed to "wake up" at predetermined intervals, take a reading and go back to sleep. The time period between readings is called the "sample period" and can range from many readings per second to once per day. The data logger will have an internal memory where the readings are stored. Once this memory is full, the data logger can be programmed to stop taking new readings, and therefore not loose any readings or, overwrite the oldest reading.

Once the data logger has been monitoring for the required time period, it is connected to the computer. The stored readings are then downloaded and saved on the computers hard disk. A graph can now be produced showing the measured signal over time - providing an accurate account of what the data logger measured - useful for proving a shipment got too hot in transit or that your office is too hot to work in!

Data loggers are used in a wide variety of applications from simple monitoring of temperature in an office environment to monitoring the temperature of perishable products in transit or optimising the production process of food, pharmaceutical or engineering products. The same data logger can be used in a variety of applications, if you want to make a record of:

• Temperature
• Temperature e Relative Humidity
• Pressure/Level
• Process Signals
• Weather Stations

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Temperature Data Loggers
All these data loggers can be used to monitor temperature and a wide range of applications. From simple office environment monitoring, through process monitoring and monitoring temperature sensitive products in transit. Many are single channel data loggers but some, can be configured to accept multiple sensors, like SL7000, SL1000 e SL2100 . Wireless environmental monitoring systems for measuring temperature and relative humidity and transmitting the readings back to a central location are available with SL400 e spYdaq systems.
	Features
	Temperature range up to +140ºC, without thermal barrier Excellent accuracy up to ±0.5ºC and temperature resolution of 0.02ºC Wide range of available models with different sizes and shapes, as small as 6mm high and 17mm of diameter, or as USB pen drive Water resistent models and completely sealed Supplied with TempIT software for easy configuration and data retrieval for analysis
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Temperature and Relative Humidity Data Loggers
All these data loggers can be used to monitor temperature and relative humidity in a wide range of applications. From simple office environment monitoring, through process monitoring and monitoring relative humidity and temperature sensitive products in transit. Some can be configured to accept multiple sensors, like the SL7000 . Wireless environmental monitoring systems for measuring temperature and relative humidity and transmitting the readings back to a central location are available with SL400 e spYdaq systems.
	Features
	Temperature range from -20ºC up to +85ºC and relative humidity range up to 100%RH Temperature accuracy up to ±0.5ºC and resolution of 0.07ºC Relative humidity accuracy of ±2%RH and resolution of 0.04%RH Wide range of available models with different sizes and shapes, as small as 6mm high and 17mm of diameter, or as USB pen drive Supplied with TempIT software for easy configuration and data retrieval for analysis
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Pressure/Level Data Loggers
High quality pressure data loggers from Signatrol Ltd. high quality pressure data logger. Typical applications includes also level measurement in wells, bore holes, waste water, reservoirs, lakes and rivers, tank monitoring and sewage treatment plants.
	Features
	Pressure ranges from 0 to 100 mBar up to 1000bar and up to 250mH2O Up to 130,000 readings Roughed AISI316L for housing and wetted parts Threded process connections for pressure data logger Level data logger with IP68 The available diameter of 10mm for the level data logger, allows the application in narrow holes and guide pipes
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Process Signals Data Loggers
These data loggers accept most common industrial signals like 4/20mA, milliVolt and Voltage signals. The SL1000 and SL2100 can also be configured in the software for thermocouple input. The SL7000 can also be configured for mA, Voltage, Thermocouple, Pt100 (RTD) and slidewire inputs - all be selecting the input required in the software, no need to specify at the time of order.
	Features
	Universal inputs, including RTD/Pt100, voltage, current, thermocouples and relative humidity Up to 500,000 readings Roughed housing materials available in ABS or extruded aluminium Data logging in modes "off-line" to internal memory or "on-line" when connecting to a PC
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Weather Stations
Signatrol offer three wireless weather stations, the low cost WH3080 and WH1090 and the more advanced 6152UK Vantage Pro 2. All are complete systems, including all outdoor sensors as well as the main display console. The WH1090/WH3080 are even supplied complete with USB lead and software.
	Features
	Measurement of outside temperature, relative humidity, wind speed, wind direction, atmospheric pressure and rainfall The WH1090/WH3080 are a very capable, low cost weather stations aimed primarily at the home user. Complete stations including all sensors and Windows software The 6152UK is a professional, wireless weather station offering unbeatable performance. Complete system including all outdoor sensors and indoor console Communication up to 300m of line of site
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