2.3
Input Signals
The PROLOGGER has 22 channels for input signals. These are divided into:
•
Sixteen analog channels with 16-bit resolution. These can be in any
combination of up to 16 single-ended or 8 differential voltage inputs ,
These channels accept signals from
±
5 millivolts full-scale to ±5.00 volts
full-scale.
•
Two high speed serial ports (bi-directional synchronous, eight 16 bit
channels on each).
•
Four counter input channels (16-bit resolution).
•
Two sense input channels (used for LOG START and SDI-12 signals).
The PROLOGGER has a number of operating modes for its analog inputs.
Analog inputs are available as low resolution (8 bit, a0 – a15) or high
resolution (16 bit, A0 – A15) all with programmable gain settings. (See
PROLOGGER Configuration Table
on page 47.)
For more about inputs see
Installation and Connection
on page 23.
Note: To save power the PROLOGGER only measures signals on channels
specified in the scheme. If you load a scheme that only specifies a single
channel, the remaining channels are not scanned. If you want to scan signals
on all channels, you must load a scheme that specifies all channels.
2.3.1
Instruments
To complement the PROLOGGER, a range of low power instruments and
sensors is available. They are designed for direct connection to the
PROLOGGER and can use the PROLOGGER’s battery or their own power
supply.
The PROLOGGER has a broad input range. This means that instruments such
as thermocouples, pyrometers, RTDs (like the PT100), strain gauge pressure
transducers, precision thermistors and frequency derived signals can generally
be connected without amplification or signal conditioning.
2.4
Outputs
The PROLOGGER has two outputs and two power sources for external
instruments. The outputs have a wide range of uses, for example they can be
used to set off an alarm or switch on an external device.
UNIDATA
6 PROLOGGER OVERVIEW
Summary of Contents for Starlog Prologger 7001
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