AVW206

-NOTE-

Electrical specifications are valid over a -25° to +50°C range unless otherwise specified. Non-condensing environment required.

Internal Radio Frequency Range

910 to 918 MHz

Radio Power

250 mW

Older AVW206 modules (serial # < 11224) have 100 mW radios.

Number of Vibrating Wire Sensors Measured

Up to 2 vibrating wire sensors can be connected to the analyzer module.

Additional sensors can be measured by using an AM16/32-series multiplexer.

Power Requirements

9.6 to 16 Vdc

Analog Input/Outputs

2 differential (DF) vibrating wire measurements (V+ and V-) and 2 single-ended (SE) ratiometric resistive half-bridge measurements (T+ and T-) for vibrating wire sensor's onboard temperature sensor.

Digital Control Ports

3 digital control ports (C1 – C3)

C1 functions as an SDI-12 I/O communication port.C2 functions as a Clk output for multiplexer control.C3 functions as a Reset output for multiplexer control.

RS-232 Port

1 9-pin RS-232 port

(for connecting to a data logger COM port)

Measurement Resolution

0.001 Hz RMS

(±250 mV differential input range; -55° to +85°C)

Measurement Accuracy

±0.013% of reading

(±250 mV differential input range; -55° to +85°C)

Input Voltage Range

±250 mV

(differential) for vibrating wire inputs

Common Mode Range

±25 V

Baud Rates

Selectable from 1200 to 38.4 kbps

(ASCII protocol is one start bit, one stop bit, eight data bits, and no parity.)

Memory

Either 128 or 512 kB of SRAM

Memory

2 MB of OS Flash

CE Compliance Standards to which Conformity Is Declared

IEC61326:2002

Dimensions

21.6 x 11.18 x 3.18 cm

(8.5 x 4.5 x 1.2 in.)

Weight

0.43 kg

(0.95 lb)

Typical Current Drain @ 12 Vdc

Quiescent, Radio Off

~0.3 mA

Radio Duty Cycling 1 s

~3 mA

(includes quiescent current)

Radio Always On

~26 mA

(radio transmit current 100 mA)

Active RS-232 Communication

~6 mA

(3 s after communication stops, the current will drop to the quiescent current.)

Measurement

~25 mA

(averaged over the 2 s)