1. Introduction
The NITERUS HT-9600 is a portable air quality detector designed to measure particulate matter (PM2.5, PM10, and 0.3μm, 2.5μm, 10μm particles) and environmental conditions such as temperature and humidity. It features a 2.8-inch LCD display for clear data presentation and has a large data storage capacity for historical analysis. This manual provides essential information for the safe and effective use of your device.

Figure 1: HT-9600 Particle Counter and included accessories.
2. Safety Information
Please read and understand all safety instructions before operating the device. Keep this manual for future reference.
- This device is not a personal safety device.
- Do not expose the device to extreme temperatures, humidity, or direct sunlight.
- Avoid strong impacts or dropping the device.
- Do not attempt to disassemble or modify the device, as this will void the warranty and may cause damage.
- Use only the specified power adapter for charging.

Figure 2: Device back panel with safety warning and battery compartment.
3. Setup
3.1 Package Contents
Verify that all items are present in the package:
- HT-9600 Air Quality Detector
- Carrying Case
- 9V Battery (pre-installed or included)
- USB Power Adapter
- User Manual

Figure 3: Package contents.
3.2 Battery Installation and Powering the Device
- When using the unit for the first time, install the supplied 9V battery. Open the battery compartment cover on the back of the device.
- Connect the 9V battery to the battery clip and place it inside the compartment. Close the cover securely.
- The meter has a battery power indication function on the LCD screen. When the display shows a low battery icon (e.g., an empty battery symbol), replace the battery promptly.
- The device can also be powered via USB. Connect the provided USB power adapter to the USB interface on the side of the device.
3.3 Device Overview

Figure 4: HT-9600 Device Layout and Controls.
Buttons:
- Power Key: Turns the device on/off.
- RUN: Initiates or stops a measurement cycle.
- ENTER: Confirms selections or enters menus.
- SHIFT: Used for various functions, potentially for changing display modes or units.
- BACK: Returns to the previous screen or menu.
- Page Up (▲): Navigates up through menus or data records.
- Page Down (▼): Navigates down through menus or data records.
Ports:
- USB Interface: For powering the device or potentially data transfer.
- Sampling Air Inlet: Where air is drawn into the device for particle detection.
- Temperature and Humidity Detection Port: Sensor for environmental readings.
4. Operating Instructions
4.1 Power On/Off
- Press the Power Key to turn the device on.
- Press and hold the Power Key to turn the device off.
4.2 Basic Measurement
- Ensure the device is powered on and the sampling air inlet is clear.
- Press the RUN button to start a measurement cycle. The device will begin drawing air and analyzing particle counts.
- The LCD display will show real-time data for particulate matter (0.3μm, 2.5μm, 10μm), temperature, and humidity.
- Press the RUN button again to stop the measurement.
Video 1: HT-9600 Particle Counter in operation, displaying real-time data.
4.3 LCD Display Description
The 2.8-inch LCD provides comprehensive information. Refer to the table below for a detailed description of each display element:

Figure 5: Detailed LCD Display Description.
| Number | Display Description |
|---|---|
| 1 | Hour/minute/second |
| 2 | Year/month/day |
| 3 | Battery level indication |
| 4 | Counting unit (Piece/L) |
| 5 | Schematic diagram of concentration grade (color bar) |
| 6 | Display area of particle counting (0.3μm, 2.5μm, 10μm) |
| 7 | Humidity (%RH) |
| 8 | Temperature (°F or °C) |
| 9 | Measuring object (Particulate matter) |
| 10 | Weight unit (μg/m³) |
| 11 | Display area of particle weight calculation (PM2.5, PM10) |
4.4 Air Quality Standard Reference
The device's display includes a schematic diagram of concentration grade. The following table provides a reference for PM2.5 average standard values over 24 hours:

Figure 6: New Air Quality Standard Reference.
| Color Grade | Air Quality Level | PM2.5 (μg/m³) |
|---|---|---|
| Green | Excellent | 0 - 35 |
| Yellow | Good | 35 - 75 |
| Orange | Slight pollution | 75 - 115 |
| Purple | Moderate pollution | 115 - 150 |
| Brown | Heavy pollution | 150 - 250 |
| Red | Serious pollution | > 250 |
4.5 Data Storage and Retrieval
The HT-9600 can store up to 2000 data points. Use the Page Up (▲) and Page Down (▼) buttons to navigate through stored records. The video demonstrates accessing records.
5. Maintenance
5.1 Cleaning
- Wipe the device exterior with a soft, dry cloth.
- Do not use abrasive cleaners or solvents.
- Ensure the sampling air inlet is free from dust or obstructions.
5.2 Battery Replacement
Refer to section 3.2 for instructions on replacing the 9V battery when the low battery indicator appears on the display.
5.3 Storage
- When not in use for extended periods, store the device in its carrying case in a cool, dry place.
- Remove the battery if storing for a very long time to prevent leakage.
6. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Device does not power on. | Low or depleted battery; incorrect battery installation; power adapter issue. | Replace the 9V battery. Ensure the battery is installed correctly. Try powering via USB. |
| Inaccurate readings. | Sampling air inlet obstructed; device not calibrated (unlikely for user); extreme environmental conditions. | Check and clear the sampling air inlet. Ensure device is used within specified operating conditions. |
| Display is blank or frozen. | Software glitch; low battery. | Try turning the device off and on again. Replace the battery. |
If you encounter issues not listed here or if the problem persists, please contact customer support.
7. Specifications
| Feature | Detail |
|---|---|
| Model Number | HT-9600 |
| Product Type | PM2.5 Detector, Dust Particle Counter |
| DIY Supplies | Electrical |
| Usage | Industrial (also suitable for indoor, car, office, surroundings) |
| Test Particle Sizes | 0.3μm, 2.5μm, 10μm (PM2.5, PM10) |
| Counting Efficiency (0.5μm) | 100 ± 10% |
| Display | 320*240 2.8-inch LCD display with color backlight |
| Temperature Accuracy | ±0.5℃ |
| Humidity Accuracy | ±3%RH |
| Data Storage Capacity | Up to 2000 data points |
| Battery | 9V (included) |
| Power Source | Battery or USB Powered |
| Dimensions (Approx.) | Height: 9.6 inches, Width: 3.34 inches, Depth: 1.5 inches |
| Package Dimensions (Approx.) | Length: 30 cm, Width: 26 cm, Height: 15 cm |
| Package Weight (Approx.) | 0.5 kg |
| Certification | CE&ROHS |

Figure 7: Key features of the HT-9600.
8. User Tips
- Understanding Particle Counts: The device displays particle counts in "pieces per liter" for 0.3μm, 2.5μm, and 10μm particles. Larger particles (like 10μm) are often visible as "dust specs" in the air.
- Interpreting Air Quality: Use the provided Air Quality Standard table (Section 4.4) to interpret the concentration grade displayed on the screen. A green indicator signifies excellent air quality, while red indicates serious pollution.
- Versatile Application: The HT-9600 is suitable for monitoring air quality in various environments, including indoors (homes, offices), inside vehicles, and in general surroundings.

Figure 8: Application scenarios for the HT-9600.
9. Warranty and Support
For warranty information, technical support, or service inquiries, please contact the seller or manufacturer directly. Keep your purchase receipt as proof of purchase.
The product is certified with CE&ROHS standards.