The new AVW200 interface module applies a new method for measuring the sensors frequency. The traditional method uses a time-domain approach. The natural or resonant frequency at which the wire is oscillating is determined by exciting the wire with an AC excitation, stopping the excitation, and then measuring time between response pulses.
We also have the optional AVW211, which incorporates an inbuilt spread-spectrum radio for wireless communications. With a 920- to 928-MHz frequency range, the AVW211 is suitable for Australia and Israel. Other frequencies are available upon request.
Features
- Greatly reduces measurement error due to noise
- Provides low current drain (300μA quiescent, 40 mA during 2 second measurement
- Resolves the vibrating -wire measurement to less than 0.001 hertz (Industry standard is 0.1 hertz)
- Optional inbuilt spread spectrum radio
- Uses SDI-12, serial output or PakBus network protocol to retrieve frequency of interest
- Includes dual channel coils plus thermistor
- Allows multiplexer control (requires AM16/32B)
- Uses simplified programming
- Supports standalone capability with optional wireless interface
Specifications
- Program Execution Interval: 1 second
- Memory: Either 128 or 512 kb of SRAM; 2 MB of OS Flash
- Voltage: 9.6 to 16 Vcd
- Size: 21.6 x 11.18 x 3.18 cm
- Weight: 430g
