The UV3p is a powered sensor with a low mV output. It should be read
using a differential voltage channel, to avoid possible signal errors that
may occur if connected single-ended.
The LAC1 input card is used in its 15-channel (differential) mode, with the
15-30 slider set to "15".
Power for the UV3p sensor is shown routed through relay channel 63.
Power from the logger’s own battery is connected to terminal 63 using the
internal jumper in the DL2e logger. Alternative sources of power can be
used, if preferred (see the DL2e User Manual).
Note: The cable screen is connected to channel 61- or 62- terminals for
electrical screening purposes. These are the digital earth/frame
connections of the DL2e, and are also used for the Power 0V return.
DL2e Sensor Codes
UV3pA, B or AB
When creating your DL2e logger configuration with the LS2e software,
you can use the UVP sensor code provided.
Warning!
Do not use the sensor code “UV” from much earlier releases. It
has a different conversion factor that will give incorrect results if used with
the UV3p sensors.
If you have an earlier release of the LS2e software, you can download the
latest version from the Delta-T web site.
All that remains is to choose suitable sampling and logging intervals (see
data requirements
) in your logging configuration.
Relay warm up for powered channels
The UV3p sensor needs power warm-up. Specify one of the relay
channels 63 or 64 and configure it for the warm-up function with a warm-
up time of 10 seconds. This length of time is required for the zero settling
of the sensor amplifier.
UV3 User Manual 1.1
UV3p Logger Connections
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