1. Introduction
This manual provides detailed instructions for the safe and effective use of your Westward Infrared Thermometer, Model 28AF72. This device is designed for non-contact temperature measurement, offering a wide temperature range and adjustable emissivity for various applications. Please read this manual thoroughly before operation and retain it for future reference.
1.1 Safety Information
- Do not point the laser directly into eyes or at reflective surfaces that could redirect the laser into eyes.
- Do not use the thermometer in environments with explosive gas, vapor, or dust.
- Do not immerse the unit in water or other liquids.
- Keep the device away from strong electromagnetic fields.
- Always ensure the measurement surface is safe to approach and measure.
- Dispose of batteries according to local regulations.
2. Package Contents
Verify that all items are present in your package:
- Westward Infrared Thermometer (Model 28AF72)
- Operating Instructions Manual (this document)
- Battery (pre-installed or separate, refer to setup for installation)
3. Product Features
- Non-Contact Measurement: Safely measure temperatures from a distance.
- Wide Temperature Range: Measures from -4°F (-20°C) to 752°F (400°C).
- Adjustable Emissivity: User-adjustable from 0.10 to 1.00 for accurate readings on various surfaces.
- Laser Sighting: Single dot laser for precise targeting of the measurement area.
- Digital Display: LCD with backlight for clear readings in various lighting conditions.
- Sound Alert: Provides an audible alert for certain conditions (e.g., high/low temperature limits, if configured).
- Full Size Body: Ergonomic design for comfortable handling.
4. Setup
4.1 Battery Installation
The Westward Infrared Thermometer operates on a battery (included). Follow these steps to install or replace the battery:
- Locate the battery compartment cover, typically on the handle of the device.
- Open the battery compartment cover.
- Insert the battery, ensuring correct polarity (+ and - terminals).
- Close the battery compartment cover securely.
Note: If the device does not power on, check battery orientation or replace with a fresh battery.
5. Operating Instructions
5.1 Taking a Measurement
- Point the thermometer at the target surface. The single dot laser will indicate the approximate center of the measurement area.
- Press and hold the measurement trigger. The temperature reading will appear on the LCD.
- Release the trigger to hold the last measured temperature on the display.
5.2 Emissivity Adjustment
Emissivity is a measure of an object's ability to emit infrared energy. Different materials have different emissivities. For accurate readings, adjust the emissivity setting to match the target material.
- The Westward 28AF72 allows emissivity adjustment from 0.10 to 1.00.
- Refer to the device's specific buttons or menu options (not detailed in product description, assume standard interface) to access and adjust the emissivity setting.
- Common Emissivity Values:
- Most organic materials, painted surfaces, water: 0.95
- Shiny metals: 0.10 - 0.30
- Concrete, asphalt: 0.95
5.3 Laser Sighting
The integrated single dot laser assists in aiming the thermometer at the desired measurement spot. Ensure the laser is pointing at the center of the area you wish to measure for optimal accuracy.
5.4 Temperature Range and Operating Conditions
- Measurement Range: -4°F to 752°F (-20°C to 400°C).
- Operating Temperature: 32°F to 122°F (0°C to 50°C). Operating the device outside this range may affect accuracy or damage the unit.
6. Maintenance
6.1 Cleaning
To ensure accurate readings and prolong the life of your thermometer:
- Wipe the unit clean with a damp cloth. Do not use abrasive cleaners or solvents.
- Keep the lens clean. Use a soft cloth or cotton swab with a small amount of isopropyl alcohol to gently clean the lens.
- Ensure the device is dry before storage or next use.
6.2 Storage
When not in use, store the thermometer in a dry, cool place, away from direct sunlight and extreme temperatures. If storing for extended periods, remove the battery to prevent leakage.
7. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Device does not power on | Dead or incorrectly installed battery | Check battery polarity, replace battery. |
| Inaccurate readings | Incorrect emissivity setting, dirty lens, outside operating temperature range | Adjust emissivity, clean lens, ensure operating within specified temperature range. |
| Laser not visible | Laser function off (if applicable), bright ambient light | Check device settings, move to a less brightly lit area. |
| "Err" or other error message | Measurement outside range, sensor issue | Ensure target temperature is within -4°F to 752°F. If error persists, contact support. |
8. Specifications
| Feature | Detail |
|---|---|
| Brand | Westward |
| Model | 28AF72 |
| Temperature Range | -4°F to 752°F (-20°C to 400°C) |
| Operating Temperature | 32°F to 122°F (0°C to 50°C) |
| Emissivity Adjustment | Adjustable, 0.10 to 1.00 |
| Laser Sighting Type | Single Dot |
| Display Type | Digital LCD with Backlight |
| Alert Type | Sound |
| Connectivity Technology | Infrared |
| Power Source | Battery Powered |
| Product Care Instructions | Wipe Clean |
| Item Weight | 0.01 ounces |
9. Warranty and Support
Westward products are manufactured to high-quality standards. For specific warranty information, please refer to the warranty card included with your product or visit the official Westward website. If you encounter any issues or require technical assistance, please contact Westward customer support through their official channels.
Note: Keep your purchase receipt as proof of purchase for warranty claims.
