METER TEROS 54 - Connect to METER Data Logger; Connect to Non-METER Data Logger

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OPERATION
The TEROS 54 comes standard with a 5-m cable. It may be purchased with custom cable
lengths for an additional fee (on a per-meter basis). In some instances, the cable can be
extended beyond 75 m by the user, but this is discouraged for a variety of reasons. Please
contact Customer Support for more details before extending or splicing cables.
2.2.1 CONNECT TO METER DATA LOGGER
The TEROS 54 works most efficiently with METER ZENTRA series data loggers. Check the
METER download webpage for the most recent data logger firmware. 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, configure the chosen logger port for the
TEROS54.
METER data loggers will automatically recognize TEROS54 probes.
3. Set the measurement interval.
METER data loggers measure the TEROS 54 every minute and return the average of the
1-min data across the chosen measurement interval.
TEROS 54 data can be downloaded from METER data loggers using either ZENTRA Utility or
ZENTRA Cloud. Refer to the logger user manual for more information about these programs.
2.2.2 CONNECT TO NONMETER DATA LOGGER
The TEROS 54 can be used with non-METER (third-party) data loggers. Refer to the third-
party logger manual for details on logger communications, power supply, and ground ports.
The TEROS 54 Integrator Guide
also provides detailed instructions on connecting sensors to
non-METER loggers.
TEROS54 probes can be ordered with stripped and tinned (pigtail) connecting wires for
use with screw terminals. METER recommends using a 4-pin M12 plug connector and a
connection cable with open wires for use with a non-METER data logger using either SDI-12,
tensioLINK serial, or Modbus RTU communications protocol.
Connect the TEROS 54 wires to the data logger as illustrated in Figure7 with the supply wire
(brown) connected to the excitation, the digital output wire (orange) to a digital input, and the
bare ground wire to ground.
NOTE: The acceptable range of excitation voltages is from 4.0 to 24.0 VDC. To read TEROS 54 with Campbell Scientific,
data loggers, power the sensors from a switched 12-V port or a 12-V port if using a multiplexer.