Quartz Transducers are widely used in the oil industry for measuring downhole
pressure and temperature with very high accuracy. The latest generation of
Quartzdyne Transducers (Quartzdyne DM, DS and DX series) include high resolution
frequency counters and provide a two-wire serial I2C interface instead of the
traditional frequency outputs.
Due to their digital interface they are called digital pressure transducers.
The Avanti AVA-02 Digital Quartz Transducer Simulator substitutes such a digital
Quartzdyne pressure transducer and facilitates testing of data acquisition
systems in the absence of a real transducer.
Pressure and temperature values can be set independently by means of two
rotary switches. Constant values or ramps with regular saw-tooth edges can be selected.
Two jumper links are provided for setting the device address, allowing up to 4
devices on the same I2C bus. Activity on the I2C bus is indicated by an LED,
which flashes up whenever the simulator is being polled successfully for
pressure or temperature readings.
The AVA-02 Digital Quartzdyne Simulator also features a special error mode,
which simulates erratic I2C behaviour. This is useful for checking how well
a data acquisition system recovers from a locked up I2C bus and whether it can
detect inconsistent data values.
With the introduction of their Digital ASIC, Quartzdyne made
some enhancements to the I2C protocol. The firmware in the AVA-02 has been updated
accordingly and now supports I2C checkbytes, 32bit status/control registers and redundant
The new revision (AVA-02-A for ASIC) is backward compatible
with earlier versions and is therefore shipped by default. The older version is still
available on special request (to be ordered as AVA-02-F for FPGA).
Model-No: AVA-02-A (or AVA-02-F on special request)
Price: £145.- + VAT.
Please contact Avanti for price in USD or EUR.