Geotechnical
Instrumentation
Multiplexer 16/32 Unit
For use with the VibWire-101
Vibrating Wire Instrumentation
For use with the VibWire-
Introduction
The Mux-16/32
multiplexer unit is 32 x 2 way and 16 x 4 way relay expansion unit for
use with the VibWire-101
vibrating wire sensor interface unit. The Mux-16/32
is fully encapsulated device making it safe from the ingress of water,
sand and dust.
Vibrating Wire Sensor Application
The Mux-16/32
output connects to the Vibrating wire sensors to the VibWire-101
interface unit. The Mux-16/32
can switch full 4 wire sensor signals, or when large channel count
solutions are required then 2 wire frequency or temperature signals.
The VibWire-101
interface is a SDI-12 network
product and will work with any suitable 3rd party data logger.
The VibWire-101
switches the channel and makes the sensor readings automatically.
Low Power Operations
The Mux-16/32
only energises a relay during a switching operation and is de-activated
at any other time. This means power supply requirements are kept to an
absolute minimum. The systems are ideally suited for stand-alone
remote systems.
Channel Select Display
A channel select display shows the sensor input in use only at the time of switching. The display is off at all other times. This feature is useful to show that the MUX-16/32
is installed and operating correctly.
Case Design
The encapsulated design of this product makes it suitable for use in the most harshest of environments. This device will still operate after short term immersion in water and will still be working long after more expensive competitive products have failed.
The Mux-
Vibrating Wire Sensor Application
The Mux-
Low Power Operations
The Mux-
Channel Select Display
A channel select display shows the sensor input in use only at the time of switching. The display is off at all other times. This feature is useful to show that the MUX-
Case Design
The encapsulated design of this product makes it suitable for use in the most harshest of environments. This device will still operate after short term immersion in water and will still be working long after more expensive competitive products have failed.
Installation
The Mux-16/32
is installed like all other AquaLOG range of products using the plastic
quick release plastic mounting tabs onto the standard system base
plates. The unit is fast to fit and easy to replace.
System Expansion
The Mux-16/32
enables the VibWire-101
interface to handle from 1 to 128 channels of vibrating wire sensor
inputs. See manual for details.
Menu System Control
The Mux-16/32
unit is fully integrated into the menu system of the VibWire-101.
The User can select any channel within the Mux-16/32
and take sensor reading and this operation is available regardless to
how many MUX-16/32 units are
in use. It takes only a few seconds to switch between channels.
The Mux-
System Expansion
The Mux-
Menu System Control
The Mux-
Typical
VibWire-101
Multiplexer System
32 x 2 Channel -
16 x 4 Signal Inputs
Built-in
Gas Discharge Lightning Protection
Channel Select LED Display
Low Power Operation by design
Relay energisation only when switching
Low Power Operation by design
Relay energisation only when switching
Fully encapsulated
enclosure -
Immersion
proof
Safe from the ingress of sand and dirt
Interference immunity switching protocol
Single Channel Selection for Sensor Test
Safe from the ingress of sand and dirt
Interference immunity switching protocol
Single Channel Selection for Sensor Test
SDI-12
Network
AquaLOG -
Data Logger
Specifications
Length = 185 mm
Depth = 130 mm
Height = 45 mm including earth post
Weight = 1 Kg
Power Supply At switching only 20 mA @ 12V for 2 sec
Relay Type Latching
Switching 32 x 2 way or 16 x 4 way
Termination 3.5 mm
Length = 185 mm
Depth = 130 mm
Height = 45 mm including earth post
Weight = 1 Kg
Power Supply At switching only 20 mA @ 12V for 2 sec
Relay Type Latching
Switching 32 x 2 way or 16 x 4 way
Termination 3.5 mm
Installation details
4.1 mm mounting hole
4.1 mm mounting hole
6.75 inches
