Using An Apogee SQ 500 PAR Sensor With 21X Micrologger
Connect a 12V power supply to the Microlog. Connect the PAR sensor to adny of the input channels - for the page, suppose the PAR sensor is connected to 02 input on Microlog as shown in figure below:
Start by pressing *1A on the Microlog. This takes you to the program table 1
Enter the time interval by pressing 1 (1 second) and then press A
Next, press 2 as it will take you to program 2 since we are measuring differential volts; then press A
Next I input the values for field 1 to 6 as per the manual
- for 01 (Repetitions) - press 01,
- for 02 (Range Code) - press 03,
- for 03 (Channel number for first measurement) - press 2 (if you added the PAR sensor to second input),
- for 04 (Input location for first measurement) - press 1
- for 05 (Multiplier) - press 1
- for 06 (Offset) - press 0
Finally, press *6A to read the values
The number on the screen of microlog is millivolts. Multiply it by 100 to ascertaine PAR readings in micromol/m2-s
| Authors | Uzair Jamil |
|---|---|
| License | CC-BY-SA-4.0 |
| Organizations | FAST |
| Cite as | Uzair Jamil (2023–2024). "Using An Apogee SQ 500 PAR Sensor With 21X Micrologger". Appropedia. Retrieved June 3, 2026. |