METER TEROS 12 - 2.2 Connecting

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TEROS 12
2.2 CONNECTING
The TEROS12 works most efficiently with METER ZENTRA, EM60, or Em50 data loggers. The
TEROS12 can also be used with other data loggers, such as those from Campbell Scientific,
Inc. For extensive directions on how to integrate the sensors into third-party loggers, refer to
the TEROS 12 Integrator Guide.
TEROS12 sensors require an excitation voltage in the range of 4 to 15VDC and operate at a
4VDC level for data communication. TEROS 12 can be integrated using SDI-12 protocol. See
the TEROS 12 Integrator Guide for details on interfacing with data acquisition systems.
TEROS12 sensors that are ordered for use with ZENTRA, EM60, or Em50 data loggers come with
a 3.5-mm stereo plug connector (Figure1) to facilitate easy connection with METER loggers.
Ground
Data
Power
Figure1 Stereo plug connector
The TEROS12 sensor comes standard with a 5-m cable. It may be purchased with custom
cable lengths for an additional fee (on a per-meter basis). This option eliminates the need
for splicing the cable (a possible failure point). However, the maximum recommended length
is75 m.
2.2.1 CONNECT TO METER DATA LOGGER
The TEROS 12 sensor works seamlessly with METER ZENTRA, EM60, or Em50 data loggers.
Logger configuration may be done using either ZENTRA Utility (desktop and mobile
application) or ZENTRA Cloud (web-based application for cell-enabled ZENTRA data loggers).
1. Plug the 3.5-mm stereo plug connector into one of the sensor ports on the logger.
2. Using the appropriate software application, congure the chosen logger port for
TEROS12.
3. Set the measurement interval.
ZENTRA, EM60, or Em50 data loggers measure the TEROS 12 every minute and return the
minute-average data across the chosen measurement interval. TEROS 12 data can be
downloaded from these loggers using either ZENTRA Utility (desktop and mobile application)
or ZENTRA Cloud (web-based application for cell-enabled data loggers).