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The 911 provides 20 channels
of voltage and current measurement at 16 bit resolution and 1m V
integrity and is fitted with general purpose disconnectable screw
terminal connectors. When used to measure standard 4-20mA current loops
it has a number of internal current shunts. The number of channels
committed to current measurement is determined when the module is built.
External current shunts can be used but accuracy is then dependent on the
integrity of connection and shunt used. The module can be programmed to
integrate signals to be measured over one complete mains cycle period (50
or 60Hz). The 911 will reject large amounts of mains borne interference
superimposed on the microvolt signals. During measurements the
interference is continually monitored and should it exceed the dynamic
range of a measurement mode in use it can be reported or a higher range
selected. Measurements can be made continuously or under direct command
from a host computer and returned in one of several formats most
convenient for the supervisory software on the host computer.
Especificaciones:
Número de canales por módulo:
20
No of poles / module 2
Connector type input channels Isothermal screw terminal
Measurement modes
· m VDC mV DC
· Thermocouple
· Ambient temperature
· Sensor health
Measurement ranges 12V
· 1.5V
· 180mV
· 23mV
Measurement resolutions 17 bit @ 40/sec
· 14 bit @ 200/sec
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