1. Introduktion
The Testo 545 Digital Lux Meter is designed for precise and convenient determination of illuminance in various working environments. This instrument helps assess light conditions to promote productivity, well-being, and health, preventing issues such as concentration problems and headaches. Its app compatibility allows for easy setup, configuration, and data management, turning your smartphone into a second display for real-time monitoring and documentation.

Figure 1.1: Testo 545 Digital Lux Meter with its external sensor.
Nøglefunktioner:
- Præcis måling: Accurate determination of illuminance for all common light sources according to the V-lambda curve.
- Bekvem betjening: Automatic calculation and display of time and point averages, with audible alarm sounds for fast and reliable results.
- Anvendelses alsidighed: Suitable for various environments, especially offices, to optimize light conditions for productivity and well-being.
- LED-kompatibilitet: Compatible with most commercially available LEDs, excluding single-color blue LEDs.
- App-forbindelse: Seamless integration with a smartphone or tablet app for graph history display, data viewing, storage, and documentation, or as a second display.
2. Sikkerhedsoplysninger
Please read this manual carefully before operating the Testo 545 Digital Lux Meter. Adhere to all safety instructions to ensure safe operation and prevent damage to the device or injury to personnel.
Generelle sikkerhedsretningslinjer:
- Do not expose the device to extreme temperatures, direct sunlight, or excessive humidity.
- Undgå kraftige stød eller vibrationer.
- Do not open the device housing. Repairs should only be performed by authorized service personnel.
- Sørg for, at batterierne er isat korrekt i henhold til polaritetsmarkeringerne.
- Bortskaf batterier og enheden i henhold til lokale regler.
- Keep the sensor clean and free from dust or obstructions to ensure accurate measurements.
3. Pakkens indhold
Bekræft, at alle nedenstående varer er til stede i din pakke:
- Testo 545 Digital Lux Meter instrument
- Transporttaske
- Calibration protocol (CoC)
- 3 x AA batterier
4. Opsætning
4.1 Batteriinstallation
The Testo 545 requires 3 AA batteries for operation. The battery compartment is located on the rear of the main unit.
- Find batteridækslet på bagsiden af enheden.
- Åbn dækslet ved at skubbe eller oplåse det som angivet.
- Isæt 3 AA-batterier, og sørg for at polerne (+/-) vender korrekt som markeret inde i batterirummet.
- Luk batterirummets dæksel forsvarligt.
4.2 Indledende tænding
After installing the batteries, the device is ready for its first use.
- Press and hold the power button (usually marked with an ON/OFF symbol) until the display illuminates.
- The device will perform a brief self-test.
- Ensure the external sensor is securely connected to the main unit via its cable.

Figur 4.1: Forside view of the Testo 545 main unit, showing the display and control buttons.
4.3 App-forbindelse
The Testo 545 can connect to a smartphone or tablet via the Testo Smart App for enhanced functionality.
- Download the "Testo Smart App" from your device's app store (Google Play Store for Android, Apple App Store for iOS).
- Sørg for, at Bluetooth er aktiveret på din smartphone/tablet.
- Power on the Testo 545.
- Open the Testo Smart App and follow the on-screen instructions to search for and connect to your Testo 545 device.
- Når du er tilsluttet, kan du view live readings, configure settings, and manage data directly from the app.

Figure 4.2: Using the Testo 545 in conjunction with the Testo Smart App on a smartphone.

Figur 4.3: Eksample screenshot of the Testo Smart App interface showing measurement trends.
5. Betjeningsvejledning
5.1 Basic Illuminance Measurement
To take a basic illuminance reading:
- Power on the Testo 545.
- Position the external sensor at the point where you wish to measure illuminance. Ensure the sensor's light-sensitive surface is facing the light source and is not obstructed.
- Allow a few seconds for the reading to stabilize on the display.
- The current illuminance value will be shown in Lux (lx).

Figure 5.1: Measuring illuminance in an office setting with the Testo 545.
5.2 Avancerede målefunktioner
The Testo 545 offers advanced functions accessible via the device's buttons or the Testo Smart App.
- Time and Point Averages: The device automatically calculates and displays time and point averages. Refer to the on-screen menu or app interface for specific options to view these averages.
- Hold funktion: Press the "HOLD" button (if available, or via app) to freeze the current reading on the display. Press again to release.
- Min./maks. værdier: The device can track and display minimum and maximum measured values during a measurement session. Access this feature through the menu.
- Datalogning: When connected to the Testo Smart App, you can log measurement data over time for analysis and reporting.

Figure 5.2: The Testo 545 being used for illuminance measurement on a workbench.
6. Vedligeholdelse
6.1 Rengøring af enheden
To ensure optimal performance and longevity of your Testo 545:
- Tør enheden og sensoren af med en blød kludamp klæde. Brug ikke slibende rengøringsmidler eller opløsningsmidler.
- Ensure the sensor's light-sensitive surface is kept clean and free of dust, fingerprints, or smudges, as these can affect measurement accuracy.
- Do not immerse the device or sensor in water.
6.2 Opbevaring
When not in use, store the Testo 545 in its transport bag in a cool, dry place, away from direct sunlight and extreme temperatures.
6.3 Udskiftning af batteri
Replace batteries when the low battery indicator appears on the display. Refer to section 4.1 for battery installation instructions.
7. Fejlfinding
This section provides solutions to common issues you might encounter with your Testo 545.
| Problem | Mulig årsag | Løsning |
|---|---|---|
| Enheden tænder ikke. | Døde eller forkert isatte batterier. | Kontroller batteripolariteten. Udskift batterierne om nødvendigt. |
| Upræcise aflæsninger. | Dirty sensor; sensor not positioned correctly; external interference. | Clean the sensor surface. Ensure sensor is facing the light source directly. Move away from strong electromagnetic fields. |
| Cannot connect to Testo Smart App. | Bluetooth off; app not updated; device out of range. | Ensure Bluetooth is enabled on both devices. Update the app. Bring devices closer together. Restart both devices. |
| Display shows "OVER" or "---". | Måleområde overskredet. | The illuminance is above the maximum measurable range (100,000 Lux). |
8. Specifikationer
Detailed technical specifications for the Testo 545 Digital Lux Meter:
| Parameter | Værdi |
|---|---|
| Produktdimensioner | 10.9 x 7.5 x 3 inches (149 x 60 x 28 mm for main unit, 134 x 54 x 23 mm for probe) |
| Varemodelnummer | 0563 1545 |
| Batterier | 3 AA batterier (medfølger) |
| Light Measuring Range | 0 til 100,000 Lux |
| Nøjagtighed | Class C (F1 = 6% V(Lambda) adjustment, F2 = 5% cos-true evaluation, Total ≤ 15%, ±3% of mv ±1 Digit) |
| Opløsning | 0.1 Lux (<10000 Lux) / 1 Lux (≥ 10000 Lux) |
| Vægt | 1.54 pund (288 g) |
| Driftstemperatur | -4 to +122 °F (-20 to +50 °C) for instrument, -4 to +158 °F (-20 to +70 °C) for probe |
| Materiale til hus | ABS + PC / TPE |
| Kabellængde | 4.593 ft. (1.4 m) |
| Beskyttelsesklasse | IP40 (instrument), IP20 (probe) |
| Batterilevetid | 70 timer |
| Opbevaringstemperatur | -4 til +122 °C (-20 til +50 °F) |
9. Garanti og support
9.1 Garantioplysninger
Testo products are manufactured to the highest quality standards. For specific warranty terms and conditions, please refer to the warranty card included with your product or visit the official Testo webwebsted. Gem din købsbevis til garantikrav.
9.2 Kundesupport
If you encounter any issues not covered in this manual or require technical assistance, please contact Testo customer support. Contact details can typically be found on the Testo official webwebstedet eller på produktemballagen.
For further information and resources, visit the Testo-butik på Amazon.





