This article explains how to safely clean the surface of DT 19mm sensors without damaging them. The sensor surface is made of acrylic (PMMA), which requires some care when choosing cleaning products.
Who is this article for?
Anyone who needs to clean or disinfect a 19mm Disruptive Technologies sensor, for example, in healthcare, food service, or other environments where regular cleaning is required.
What do you need?
- A compatible cleaning product (see the recommended list below)
- A soft cloth, preferably microfiber, to reduce the risk of scratching
How to clean your sensors
To clean your 19mm sensor safely, follow these steps:
- Choose a cleaning product from the recommended list below. Avoid products on the "not recommended" list.
- Apply a small amount of the cleaning product to a soft microfiber cloth; do not apply it directly to the sensor.
- Gently wipe the sensor surface. Avoid vigorous rubbing or scraping, as this can damage the acrylic surface.
- Keep the contact time with any cleaning product as short as possible. The acrylic surface can soften if exposed to chemicals (especially alcohols) for extended periods.
- If needed, wipe the sensor with a damp cloth (water only) to remove any remaining cleaning product.
Recommended and Not Recommended Cleaning Products
The sensor's acrylic (PMMA) surface is generally tolerant to chemicals, but repeated or extended exposure, especially combined with heat or abrasion, can degrade its appearance. The chemical resistance depends on the concentration of the cleaner, contact time, and temperature.
Recommended (safe to use):
- Soap and water
- Hydrogen peroxide disinfectants (3%–5%)
- Isopropyl alcohol (<70%)
- Bleach, household laundry grade, oxygen-based
- Microfiber cloths (reduce the risk of scratching)
Not recommended (avoid these):
- Ethyl alcohol (pharmacy grade)
- Household bleach (chlorine-based)
- Other stronger cleaners and disinfectants
Attention!
These recommendations are based on information we believe to be reliable, but without any guarantees, as conditions and methods of cleaning are beyond our control.
Troubleshooting / FAQ
Q: Can I use hand sanitizer to clean the sensor?
A: Most hand sanitizers contain ethyl alcohol, which is not recommended for cleaning the 19mm sensor's acrylic surface. Use isopropyl alcohol at less than 70% concentration instead, and keep contact time as short as possible.
Q: What happens if I use a harsh cleaner by mistake?
A: A single brief exposure is unlikely to cause visible damage. However, repeated use of harsh chemicals, especially combined with scrubbing, can soften or degrade the acrylic surface over time. Switch to a recommended cleaner going forward.
Q: Does this apply to all Disruptive Technologies sensors?
A: This article covers cleaning instructions specifically for the 19mm sensors. If you have a different sensor type, contact support for guidance.