Product category:
Gauges, Indicators and Instruments
News Release from: HBM UK | Subject: Canhead
Edited by the Engineeringtalk Editorial
Team on 24 November 2003
Measuring system takes the strain
The Canhead system can reduce installation costs during experimental stress analysis using strain gauges and is particularly suited to tests involving some hundreds or thousands of measuring points.
HBM reckons its Canhead system can reduce installation costs during experimental stress analysis using strain gauges and is particularly suited to tests involving some hundreds or thousands of measuring points The system is based on separating the basic module from the amplifier module
This article was originally published on Engineeringtalk on 7 Jan 2005 at 8.00am (UK)
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The amplifiers are installed close to the application and a standard CANbus system is used for data transmission through the Canheads.
This eliminates the need for expensive connection cables and simplifies installation.
Each Canhead is designed for ten channels and comes complete with an analogue to digital (A/D) convertor for each channel allowing synchronous data acquisition.
An additional channel is used for temperature compensation using a strain gauge or a resistor.
A CANopen protocol is used for transmitting data from up to 12 Canheads on a single bus line.
HBM's ML74 communication module is used as the master for uploading data to an MGCplus or MGCsplit system and, for users of the Catman measurement software, the system provides plug and play compatibility.
An added advantage of the Canhead system is that the installation can be prepared before the amplifier is connected.
The amplifier may also be removed without losing the acquired data from individual measuring points.
The range of Canhead products includes basic modules available in quarter- or half-bridge circuits for all standard strain-gauge resistance values (120, 350, 700 and 1000ohm).
The amplifiers operate on the 600Hz carrier frequency eliminating both thermoelectric voltages at the points of contact and the DC voltage drift.
Bridge excitation voltages of 0.5, 1 and 2.5V are available. Request a free brochure from HBM UK ...
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