Why am I seeing gaps or dotted lines in my sensor glucose (SG) graph? What should I do about this?
Gaps or dotted lines in your SG graph usually mean that: Your sensor and pump briefly lost connection, but they're designed to reconnect automatically. This is normal and doesn't disrupt your therapy. SmartGuard™ technology is designed to operate safely, even if the connection between your pump and sensor is interrupted. Your pump will alert you if it’s disconnected from your sensor for 30 minutes or longer. Move the pump closer to the sensor and wear the pump on the same side of your body as the sensor to ensure your sensor and pump remain connected. Separate your pump and sensor from wireless devices that may interfere with the wireless connection between your pump and sensor or turn off interfering devices. Additional detail:
- Objects or your body in between your pump and your sensor may interrupt the connection between the two devices.
- Nearby wireless devices, such as smart phones, may also disrupt the connection between devices.
- When the pump and sensor are disconnected, your SG readings continue to be collected and will appear as a dotted line on your graph once your devices reconnect.
- Instinct is small, with a small antenna, and has a battery that has been optimized to last 15 days. For these reasons, you may notice a difference in the connectivity between previous sensors and Instinct.
- If the lost connection continues for 30 minutes or longer, you may get a lost sensor alert. Follow the steps above to ensure the devices reconnect.
- It’s normal for you to experience disconnections, but if you have concerns about your connectivity, please contact MiniMed for support.



