1. Introduktion
The Extech Instruments HW30 HeatWatch is a multi-function stopwatch designed to provide essential environmental data alongside precise timing capabilities. This device displays digital up/down timer functions, current temperature, humidity, and calculates the heat index, which indicates how hot it feels when humidity is combined with the actual temperature. It is an ideal tool for monitoring conditions in various environments, particularly those with hot weather. Additional features include a 12/24-hour clock, a standard stopwatch, 30 lap/split memory, and a programmable alarm.
2. Nøglefunktioner
- Multi-function stopwatch with digital display.
- Integrated up/down timer.
- Real-time temperature display.
- Real-time humidity display.
- Heat Index calculation for perceived temperature.
- 12/24-hour clock display.
- Stopwatch function with 30 lap/split memory.
- Programmable alarm function.
3. Pakkens indhold
Kontroller, at alle varer er til stede og i god stand, når du åbner pakken:
- HW30 HeatWatch Humidity and Temperature Stopwatch
- Snor
- 1 x Lithium Metal Battery (installed or separate)
- Betjeningsvejledning (denne vejledning)
4. Produktet er slutview
The HW30 HeatWatch features a robust design with clearly labeled buttons for easy operation and a large LCD for clear readings.

Figur 4.1: Forside view of the Extech HW30 HeatWatch, showing the display and control buttons.

Figur 4.2: Detaljeret view of the HW30 display, indicating humidity (50%), temperature (86°F), and heat index (88°).
4.1. Betjeningselementer og display
- START/STOP knap: Starter og sætter tidsfunktioner på pause.
- MODE knap: Cycles through different operating modes (Time, Stopwatch, Humidity/Temperature/Heat Index, Alarm).
- LAP/SPLIT/RESET Button: Records lap/split times or resets the stopwatch.
- RECALL knap: Accesses stored lap/split memory.
- LCD-skærm: Shows time, measurements, and function indicators.
5. Opsætning
5.1. Batteriinstallation
The HW30 HeatWatch requires one Lithium Metal battery for operation. The battery is typically included with the device.
- Find batteridækslet på bagsiden af enheden.
- Use a small screwdriver or coin to open the battery compartment.
- Insert the Lithium Metal battery, ensuring correct polarity (+/-) as indicated inside the compartment.
- Sæt batterirummets dæksel på igen og fastgør det.
Note: Bortskaf brugte batterier ansvarligt i henhold til lokale regler.
6. Betjeningsvejledning
This section details the various functions and modes of the HW30 HeatWatch.

Figure 6.1: The HW30 HeatWatch being held, demonstrating its portable and ergonomic design for active use.
6.1. Grundlæggende betjening og valg af tilstand
Tryk på MODE knappen for at skifte mellem følgende visningstilstande:
- Tidstilstand: Viser det aktuelle klokkeslæt (12- eller 24-timers format).
- Stopurstilstand: For timing events, including lap/split functions.
- Humidity/Temperature/Heat Index Mode: Shows environmental readings.
- Alarmtilstand: For setting and activating the programmable alarm.
6.2. Indstilling af tid og dato
- I tidstilstand skal du trykke på og holde MODE knappen, indtil tidscifrene begynder at blinke.
- Brug START/STOP knappen til at justere det blinkende ciffer (timer, minutter, sekunder).
- Tryk på OMGANG/MELLEM/NULSTIL button to move to the next digit or setting (e.g., 12/24-hour format, date).
- Når alle indstillinger er konfigureret, skal du trykke på MODE button to exit setup.
6.3. Using the Stopwatch Functions
- Switch to Stopwatch Mode using the MODE knap.
- Trykke START/STOP for at begynde timingen.
- Trykke OMGANG/MELLEM/NULSTIL to record a lap or split time. The display will momentarily show the recorded time while the stopwatch continues to run in the background.
- Trykke START/STOP igen for at sætte stopuret på pause.
- Tryk på for at genoptage START/STOP. Tryk på for at nulstille OMGANG/MELLEM/NULSTIL mens stopuret er på pause.
- To recall stored lap/split times, press the MINDE OM button in Stopwatch Mode. Use OMGANG/MELLEM/NULSTIL to scroll through memory.
6.4. Humidity, Temperature, and Heat Index Measurement
The HW30 automatically measures and displays humidity, temperature, and calculates the heat index in the dedicated mode.
- Switch to Humidity/Temperature/Heat Index Mode using the MODE knap.
- The display will show the current humidity percentage, temperature (in °F or °C), and the calculated heat index.
- Allow a few minutes for the sensors to stabilize and provide accurate readings, especially when moving the device between environments with different conditions.
6.5. Indstilling af alarmen
- Switch to Alarm Mode using the MODE knap.
- Tryk og hold på MODE knappen, indtil alarmtidscifrene begynder at blinke.
- Brug START/STOP button to adjust the flashing digit (hours, minutes).
- Tryk på OMGANG/MELLEM/NULSTIL button to move between hours and minutes.
- Når det ønskede alarmtidspunkt er indstillet, skal du trykke på MODE knappen for at bekræfte.
- For at aktivere eller deaktivere alarmen skal du trykke på START/STOP button in Alarm Mode. An alarm icon will appear on the display when activated.
7. Vedligeholdelse
7.1. Rensning
- Tør enheden af med en blød, damp klæde. Brug ikke slibende rengøringsmidler eller opløsningsmidler.
- Ensure the device is dry before storage or further use.
7.2. Opbevaring
- Store the HW30 in a cool, dry place away from direct sunlight and extreme temperatures.
- If storing for extended periods, it is recommended to remove the battery to prevent leakage.
7.3. Udskiftning af batteri
Replace the battery when the display becomes dim or the unit ceases to function. Refer to Section 5.1 for battery installation instructions.
8. Fejlfinding
This section addresses common issues you might encounter with your HW30 HeatWatch.
| Problem | Mulig årsag | Løsning |
|---|---|---|
| Intet display eller svagt display | Lavt eller dødt batteri; Forkert batteriinstallation. | Replace the battery; Ensure battery is installed with correct polarity. |
| Unøjagtige temperatur-/fugtighedsmålinger | Sensors not stabilized; Extreme environmental conditions. | Allow several minutes for the unit to acclimate to the environment; Ensure sensors are not obstructed. |
| Stopwatch not responding | Unit in incorrect mode; Buttons stuck. | Cycle through modes to Stopwatch Mode; Check for any physical obstructions on buttons. |
| Heat Index reading seems off | Heat index calculation is based on specific algorithms and can vary slightly; Sensor acclimation. | Ensure temperature and humidity readings are stable; Understand that heat index is a calculated value. |
9. Specifikationer
Technical specifications for the Extech HW30 HeatWatch Humidity and Temperature Stopwatch:
| Specifikation | Værdi |
|---|---|
| Modelnummer | HW30 |
| Produktdimensioner | 3.1 x 2.6 x 0.8 tommer (7.9 x 6.6 x 2.0 cm) |
| Varens vægt | 0.71 ounce (0.02 kilo) |
| Batteritype | 1 Lithium Metal batteri (medfølger) |
| Materiale | Plast |
| Farve | Grøn |
| Fabrikant | Extech |
| Første ledige dato | 20. april 2004 |
10. Garanti og support
Extech Instruments products are designed for reliability and performance. For specific warranty information, please refer to the warranty card included with your product or visit the official Extech Instruments website. For technical support, troubleshooting assistance beyond this manual, or to inquire about replacement parts, please contact Extech Instruments customer service through their official channels.
Du kan finde flere oplysninger og supportressourcer på Extech Instruments Brand Store on Amazon.