6
USING APOGEE QUANTUM SENSORS WITH ZENTRA SYSTEM
3. DATA INTERPRETATION
Apogee Quantum sensors used with the ZENTRA system report PPFD in units of micromoles
per square meter per second. Additionally, the sensor orientation information is provided
in the metadata tab of ZENTRA Cloud and ZENTRA Utility Microsoft
®
Excel
®
file downloads.
Sensor orientation is reported as the zenith angle in units of degrees, with a zenith angle of
0° indicating a sensor oriented straight up.
4. TROUBLESHOOTING
This troubleshooting section details possible major problems and their solutions. If the
problem is not listed or these solutions do not solve the issue, contact
Customer Support.
Table 2 Troubleshooting
Problem Possible Solution
Sensor not responding Check power to the sensor and logger.
Check sensor cable and stereo plug connector integrity.
Check that the SDI-12 address of the sensor is 0 (factory default).
Check this with ZENTRA Utility by going to Actions, select Digital
sensor terminal, choose the port that sensor is on, and send the
?I! command to the sensor from the dropdown menu.
Sensor values are not reasonable Verify the sensor is not shaded.
Verify the angle of sensors.
Cable or stereo plug
connectorfailure
If the stereo plug connector is damaged or needs to be replaced,
contact Customer Support for a replacement connector or
splice kit.
If a cable is damaged refer to the METER wire-splicing guide for
cable repair.
It is recommended that Apogee Quantum sensors are returned for factory recalibration every
2 years. Visit Apogee repairs (apogeeinstruments.com/recalibration-and-repairs) or contact
Apogee Technical Support (techsupport@apogeeinstruments.com) for details.
5. CUSTOMER SUPPORT
NORTH AMERICA
Customer support representatives are available for questions, problems, or feedback
Monday through Friday, 7:00 am to 5:00 pm Pacific time.
Email: support.environment@metergroup.com
sales.environment@metergroup.com
Phone: +1.509.332.5600
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