✅ Dustlight FAQ — Executive Summary

What is the Dustlight?

A personal, wearable dust monitor for trade and industrial environments. It measures respirable dust and PM fractions, giving real‑time alerts to help reduce exposure risks. It is not a compliance instrument.

✅ Core Functions

• Real‑time monitoring of respirable dust.

• Traffic‑light indicator (green/yellow/red) + display.

• Alerts workers when dust reaches critical levels.

• Helps determine when PPE or extraction is needed.

• Supports risk assessment, process evaluation, and exposure awareness.

✅ Usage & Wearing

• Worn on the body using the clip or accessories.

• Best accuracy when worn close to mouth/nose (chest strap recommended).

• One‑button operation, intuitive display.

✅ Dust Thresholds

• Based on TRGS 900 (Germany).

• Red alert at 1250 µg/m³ respirable dust.

• Yellow threshold adjustable via app.

✅ Battery & Charging

• Up to 9 hours continuous mode.

• Up to 40 hours eco mode.

• Full charge in ~3 hours via magnetic USB cable.

✅ Measurement & Accuracy

• Photometric laser‑based measurement.

• Real‑time readings every 1 second (active mode).

• Adjustable to 60 seconds in eco/passive mode.

• Accuracy:

• PM1/PM2.5: ±5 µg/m³ & ±5–10%

• Other fractions: ±10%

• Suitable for indoor/outdoor use (wind may affect readings).

• Operating range: –10°C to 55°C, 0–80% RH (non‑condensing).

• IP5X dust‑protected (not water‑resistant).

✅ Limitations

• Not a replacement for PPE.

• Not certified for regulatory compliance.

• Cannot detect gases (NOx, CO, diesel emissions).

• Cannot automatically identify dust type in mixed environments.

• No Ex‑rated version yet (in development).

✅ Software & App

Basic vs Business Plan

Business Plan adds:

• Cloud storage

• Web app access

• PDF reports

• Material‑specific configurations (additional annual fee)

Basic Plan:

• Local storage only

• No PDF reports

• Only general dust configuration

Licensing

• Licenses are device‑specific.

• Organisations can have unlimited users.

• Users can link up to 15 devices, depending on licenses purchased.

Data Handling

• Device memory overwrites itself every 3–6 months.

• Data deletion only removes it from the user account, not the device.

• Business plan: cloud‑synced data backed up.

• Account deletion removes all synced data.

Access & Roles

• Admin: manage users/devices, assign roles.

• User: view own synced data only.

• Tokens used for joining organisations; they never expire.

✅ Material‑Specific Configurations

Available options include:

• Mixed Dusts (default)

• Welding (TIG/MIG/electrode)

• Softwood dust

• Silica gel

• Fumed silica

• Precipitated silica

• Oil mist

Notes:

• Mixed Dusts covers most environments (incl. crystalline silica).

• Material‑specific configs improve accuracy and adjust thresholds.

• Custom configs require an annual fee.

✅ Hardware

• Powered by internal battery + magnetic USB cable.

• Bluetooth 4, approx. 10–20 m range.

• Charging cradles in development.

• IP5X dust‑protected.

• Not water‑resistant.

✅ Environment

• Works indoors/outdoors.

• High humidity or condensation can distort readings.

• Strong wind affects particle concentration at the sensor.

✅ Accessories

• Click‑Fast connector for clips, straps, patches.

• Chest strap recommended for most accurate personal exposure measurement.

✅ Maintenance

• Annual cleaning + recalibration recommended.

• System tracks maintenance due dates and notifies customers.

• Service includes cleaning, recalibration, fault checks (not battery replacement).