Temperature/Humidity probes for the USB LabJack
Data acquisition unit.
Available from Audon Electronics is a range of low cost
temperature and humidity sensors for the LabJack USB
data acquisition unit.
The LabJack U12 USB data acquisition and control unit features
8 single ended or 4 differential analogue inputs, 2 analogue
outputs and 20 digital I/O. This new range of temperature and
humidity sensors can be connected directly to the LabJack's
analogue inputs, being powered from the LabJack's 5V supply.
Up to 8 sensors may be connected to a single LabJack.
The TP-100 is a 0-100°C plastic probe whilst the TP-200 is a
5mm diameter, 150mm long stainless steel probe with a
temperature range of -50°C to 150°C. Both come with 1.5m
cable. Other lengths can be supplied to special order.
The TH-100 is a combined temperature and humidity sensor
housed in a 70mm x 70mm x 25mm ventilated plastic enclosure
that may be desk or wall mounted. Temperature range is 0-100°C
and the unit can measure humidity over the entire 0-100%RH
range.
The LabJack has a ±10V input range at 12-bit resolution.
Differential channels can make use of the low noise precision
amplifier with gains of 1,2,4,8,16,20. Data can be streamed
to disk at 1kHz and a bursts mode allows over 4000 samples
to de taken at a 8kHz rate. The two 0-10V analogue output
channels can be updated at a 50Hz rate with 10-bit resolution.
All analogue I/O are accessed via screw terminals.
The LabJack has 20 digital I/O channels which can be individually
configured as input or output. Four digital I/O's are accessed
via screw terminals whilst the remaining 16 are accessed through
a 25-way D connector. The use of the PC's USB port allows for
a simple plug-and-play installation process and by using USB
hubs, up to 80 LabJacks may be connected to a single USB port.
Included with the LabJack are the free example applications
LJlogger and LJscope. LJlogger provides datalogger type
functionality. It reads all inputs, controls all outputs, writes real
time data to the Internet or hard disk, and sends email when
events are triggered. Scaling can be applied to the analogue
input channels to produce readings in engineering units.
LJscope is a virtual oscilloscope program with FFT display.
Extensive software support is included, and the LabJack
comes with a DLL, and ActiveX component and LabView VI's.
Many example program's in Visual Basic, C, Delphi, LabView,
Testpoint, DAQFactory are available.
_________________________________________________
April 2003
