PRODUCT
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Overview
The AM16/32B multiplexer significantly increases the number
of sensors that you can measure with a Campbell Scientific
data logger. It interfaces with the data logger and adds
terminals so that you can wire additional sensors of almost any
type.
Benefits and Features
Significantly increases the number of sensors the data logger
can measure
Can multiplex 16, 32, or 48 sensors
Supports many types of sensors including thermistors,
potentiometers, strain gages, vibrating wires, reflectometers,
and soil moisture blocks
Decreases the cost of cabling individual sensors on long wire
runs
Allows a relay address to be used to go directly to a specific
channel—reducing power consumption and wear on the
relay switches
Electrical surge protection via gas tubes on all analog I/O,
and varistors or TVS diodes on all other connections
Prevents sensor-cable damage by providing strain relief for
sensor leads and independent routing for sensor shield lines
Eliminates the requirement for dc blocking capacitors for
gypsum soil moisture blocks, significantly reducing sensor
cost
Detailed Description
Depending on sensor type, the AM16/32B can multiplex 16, 32,
or 48 sensors. Up to six AM16/32Bs may be connected to the
same data logger, depending on the number of control ports
and analog inputs available.
The AM16/32B either multiplexes 16 groups of four lines (a
total of 64 lines) through four common (COM) terminals.
Alternatively, a manual switch setting allows the AM16/32B to
multiplex 32 groups of two lines (also a total of 64 lines)
through two COM terminals. A cable connects the common
terminals to data logger analog inputs, excitation channels, or
ground as required by the sensor. The data logger controls the
multiplexer using two control ports, or one control port and
one excitation channel.
Greatly
Increases
Sensor
Capacity
Connects many sensors to single
data logger
16- or 32-Channel Relay Multiplexer
AM16/32B
