1. Introduktion
The CEM DT-1317 Solar Irradiance Meter is a high-accuracy tool designed to simplify the installation, commissioning, and troubleshooting of photovoltaic (PV) arrays. This single handheld instrument measures solar irradiance, temperature, inclination, and direction of solar arrays. Its rugged, compact design and high-contrast LCD screen ensure easy readability even in direct sunlight.
This meter is essential for:
- Installing, commissioning, and troubleshooting photovoltaic (PV) arrays.
- Testing, documenting, and maintaining photovoltaic systems.
- Measuring irradiance, temperature, inclination, and direction of solar arrays.

Image: The CEM DT-1317 Solar Irradiance Meter being used in various application scenarios, including installation, daily operation, and performance testing of solar energy systems.
2. Nøglefunktioner
- Sunlight Measurement: Irradiance measurements up to 1400 W/m².
- Temperaturmåling: Utilizes a built-in temperature sensor or an external suction mount temperature probe for ambient and panel temperature readings.
- Kompas funktion: Measures roof or site orientation (0° to 360°).
- Måling af hældningsvinkel: Measures inclination from -90° to 90°, providing insights into roof and PV panel tilt.
- High Contrast LCD: Large numbers for easy readability in direct sunlight.
- High Accuracy and Rapid Response: Ensures reliable and quick measurements.
- Datahold funktion: Allows users to freeze and review måleværdier.

Image: A man holding the CEM DT-1317 Solar Irradiance Meter while standing near solar panels, illustrating its use for solar irradiance, temperature, compass, and tilt angle measurements.
3. Pakkens indhold
Når du åbner pakken, skal du kontrollere, at alle nedenstående varer er til stede og i god stand:
- CEM DT-1317 Solar Irradiance Meter (Main Unit)
- Ekstern temperaturprobe
- Bæretaske

Image: The CEM DT-1317 Solar Irradiance Meter, its external temperature probe, and a carrying case, displayed next to the product box.
4. Produktet er slutview
Familiarize yourself with the components and display elements of the DT-1317 Solar Irradiance Meter.
4.1 Meter Components

Image: Detailed diagram of the CEM DT-1317 Solar Irradiance Meter and its external probe, labeling the Light Irradiance Sensor, various buttons (C/F, HOLD, ZERO, Power, Backlight), and the external temperature probe slot. Dimensions are also indicated.
- Light Irradiance Sensor: Located at the top of the main unit.
- External Temperature Probe Slot: For connecting the external temperature probe.
- Knapper:
- °C/°F: Skifter mellem temperaturenheder i Celsius og Fahrenheit.
- HOLDE: Fryser den aktuelle måling på displayet.
- NUL: Resets the tilt angle measurement.
- Tænd/sluk-knap (rød): Tænder/slukker enheden.
- Backlight Key (Sun icon): Aktiverer/deaktiverer displayets baggrundsbelysning.
- Angle Reset (Triangle icon): Resets the tilt angle.
4.2 LCD Display Elements
- HOLDE: Angiver, at dataholdfunktionen er aktiv.
- Indikator for lavt batteri: Vises, når batterispændingen er lav.
- W/m²: Unit for solar irradiance.
- Compass Icon: Displays direction.
- °C/°F: Indikator for temperaturenhed.
- Måling af hældningsvinkel: Displays the measured inclination.
- Nul: Indicates the zero reference for tilt angle.
- Sonde: Indicates external probe is in use.
- Tester: Main unit display.

Billede: Et nærbillede view of the CEM DT-1317 Solar Power Meter's LCD display, showing irradiance (W/m²) and temperature (°C) readings, along with icons for HOLD, low battery, and compass.
5. Opsætning
5.1 Batteriinstallation
The DT-1317 Solar Irradiance Meter requires batteries for operation. Please note that batteries are not included in the standard package due to international shipping regulations. Purchase appropriate batteries from your local store or supermarket.
Sådan installeres batterier:
- Find batteridækslet på bagsiden af måleren.
- Åbn låget.
- Indsæt batterierne, og sørg for korrekt polaritet (+/-).
- Luk batterirummets dæksel forsvarligt.
5.2 Connecting the External Temperature Probe
If you intend to use the external temperature probe for panel temperature measurements:
- Locate the external temperature probe slot on the side of the main unit.
- Carefully insert the probe connector into the slot until it clicks into place.
- Ensure the probe is securely attached before use.

Billede: En detaljeret view of the CEM DT-1317, highlighting the internal temperature sensor and the external temperature probe slot, along with an example of the meter in use with the probe attached to a solar panel.
6. Betjeningsvejledning
6.1 Tænd/sluk
- Press the red power button to turn the meter ON.
- Press and hold the red power button to turn the meter OFF.
6.2 Solar Irradiance Measurement
- Tænd måleren.
- Point the light irradiance sensor directly towards the sun or the solar panel surface you wish to measure.
- The solar irradiance value in W/m² will be displayed on the LCD.
6.3 Temperaturmåling
- The meter automatically displays temperature using its built-in sensor.
- If the external probe is connected, the display will show the temperature measured by the probe.
- Tryk på ° C / ° F knappen for at skifte mellem enhederne Celsius og Fahrenheit.
6.4 Kompasfunktion
- The compass icon and reading on the LCD indicate the orientation of the meter.
- Hold the meter level and rotate it to determine the desired direction.
6.5 Tilt Angle Measurement
- Place the meter on the surface whose tilt you want to measure (e.g., a solar panel).
- The tilt angle will be displayed on the LCD.
- To set a new zero reference for relative angle measurements, press the NUL knap.
- To reset the angle measurement to absolute, press the Angle Reset knap.
6.6 Datahold
- Tryk på HOLDE button to freeze the current reading on the display. The 'HOLD' icon will appear.
- Tryk på HOLDE button again to release the data hold function and resume live readings.
6.7 Baggrundslys
- Tryk på Baggrundsbelysningstast (sun icon) to turn the LCD backlight on or off for better visibility in low-light conditions.
SLUK IKKE automatisk ned
The meter features an auto-shutdown function to conserve battery life. It will automatically power off after a period of inactivity. Press the power button to restart the device.
7. Vedligeholdelse
7.1 Rengøring
- Wipe the meter's exterior with a soft, dry cloth.
- Brug ikke slibende rengøringsmidler eller opløsningsmidler.
- Keep the light irradiance sensor clean and free from dust or obstructions for accurate readings.
7.2 Opbevaring
- When not in use, store the meter in its carrying case to protect it from dust, moisture, and physical damage.
- Fjern batterierne, hvis enheden ikke skal bruges i længere tid, for at forhindre lækage.
7.3 Udskiftning af batteri
- Udskift batterierne, når indikatoren for lavt batteriniveau vises på LCD-skærmen.
- Se afsnit 5.1 for instruktioner om batteriinstallation.
8. Fejlfinding
| Problem | Mulig årsag | Løsning |
|---|---|---|
| Måleren tænder ikke | Døde eller forkert installerede batterier | Kontroller batteripolariteten, og udskift med nye batterier. |
| Inaccurate irradiance readings | Dirty sensor, obstruction, low battery | Clean the light irradiance sensor. Ensure no obstructions. Replace batteries if low. |
| Temperature probe not working | Loose connection, faulty probe | Ensure the external probe is securely connected. If problem persists, contact support. |
| Skærmen er svag eller flimrer | Lavt batteri | Udskift batterierne. |
9. Specifikationer
| Fungere | Rækkevidde | Opløsning | Nøjagtighed |
|---|---|---|---|
| Sollys | 0 - 1400 W/m² | 1 W/m² | ±5 % |
| Temperatur | -30°C til 100°C (-22°F til 212°F) | 0.1°C (0.2°F) | ±1°C (±2°F) |
| Temperature measurement response time: 30s | |||
| Hældning | -90° til 90° | 0.1° | ±1.5° - ±3.5° |
| Kompas | 0° til 360° | 1° | ±7° |

Image: A table summarizing the data metrics for Irradiance, Temperature, and Tilt Angle, including measurement ranges and the compass function.
9.1 Fysiske egenskaber
- Hovedenhedsdimensioner: Approximately 17.5 cm (H) x 5.3 cm (W) x 3.5 cm (D)
- Probe Dimensioner: Approximately 17.5 cm (H) x 4.2 cm (W) x 2.8 cm (D)
- Vægt (emballeret): Cirka 1.5 kg
10. Brugertips
- Batteriberedskab: Remember that batteries are not included in the package. Please purchase the required batteries from a local store before first use.
- Farvevariation: The instrument may be delivered in either black or blue color. There is no functional difference between the colors.
- Sensorpleje: Always ensure the light irradiance sensor is clean and unobstructed for the most accurate readings.
- Sondens placering: For accurate panel temperature measurements, ensure the external probe is in good contact with the panel surface.
11. Garanti og support
CEM provides a warranty for its products against defects in materials and workmanship. If you encounter any issues with your DT-1317 Solar Irradiance Meter, please follow these guidelines:
- Rapportering af mangler: Defective items must be reported and returned within the specified warranty period.
- Original emballage: Ensure the product is returned in its original packaging.
- Nødvendig information: When reporting a defect, please provide a clear description of the issue and your purchase ID.
- Kontakt support: For warranty claims, technical assistance, or any questions regarding the product, please contact the seller or CEM customer support directly.

