Vernier Software and Technology
Vernier Software & Technology
Tech Info Library

Go Direct Energy Sensor Troubleshooting and FAQs

Go Direct® Energy Sensor, order code GDX-NRG, $89
Specifications and User Guide

- Primary Test:
1. Make sure the load switch is in the "Internal 30 " setting
2. Connect the sensor to a AA battery.
3. The Potential should be approximately 1.5 volts.

When connected to Graphical Analysis, Choose New from the File menu. A file should open with four graphs, potential, current, resistance and power. If this doesn’t happen, verify that you have a current version of the software.
     TIL 3182: What software do I need to use a Vernier Energy Sensor?

- Secondary Test:
If the above steps are successful and the unit is still not behaving properly try the following:
1. Zero the Sensors on the Energy Sensor while shorting out the Source terminals. Remove the short.
2. Connect a known voltage source (e.g. a battery) in the 2-5V range to the Source terminals of the Energy Sensor.
3. Connect an appropriate resistor that would draw about 100 mA of current from the source, e.g. for a 3V source use a 30 Ohm resistor.
4. On LabQuest 2, the bar gauges should read the applied voltage and the appropriate current calculated from Ohm’s law. On Logger Pro the Auto ID file gauges should give these same readings.
5. If the step above is successful, the VES is operating correctly and the issue is somewhere in the components that are connected to the Energy Sensor. Double check your wiring, and make sure all connections are secure.

TIL 3228: Readings from Vernier Energy Sensor are noisy.
TIL 3243: Can I use the Vernier Energy Sensor in place of other voltage or current sensors?
TIL 4223: Why doesn't the warning LED of my Energy Sensor come on?
TIL 4408: Energy Sensor gives erratic readings with custom generator.

Software requirements
-TIL 3182: What software do I need to use a Vernier Energy Sensor?

- Source input potential range ± 30 V
Source input current range ± 1000 mA
     Potential Sensor 0.01%
     Current Sensor 0.01%
13-bit resolution (using SensorDAQ)
     Potential Sensor 0.008 V
     Current Sensor 0.26 mA
12-bit resolution (using LabPro, LabQuest 2, LabQuest, LabQuest Mini, TI-Nspire Lab Cradle)
     Potential Sensor 0.016 V
     Current Sensor 0.52 mA

Input impedance
     Potential Sensor > 2 MΩ
Insertion resistance
     Current Sensor 0.1 Ω

Frequency response
     Potential Sensor –3 dB @ 160 Hz
     Current Sensor –3 dB @ 160 Hz

- Vernier Variable Load, order code VES-VL, $64
- Vernier Resistor Board, order code VES-RB, $18

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