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General| Type | Digital Multimeter |
|---|---|
| Diode Test | Yes |
| Auto Ranging | Yes |
| Data Hold | Yes |
| Operating Temperature | 0°C to 40°C |
| DC Current Range | 400μA to 10A |
| AC Current Range | 400μA to 10A |
| Continuity Test | Yes |
| Display | LCD, 4000 counts |
| Measurement Range | As per individual functions |
Ensure the meter is used only as specified in the manual to maintain its protective features. Check batteries are correctly placed.
Follow all warnings and instructions during measurements to prevent damage to the apparatus, components, or operator injury.
Switch off the instrument after measurements. Remove batteries for long-term storage to prevent leakage.
The HT4000 measures air speed, temperature, humidity, and pressure, storing data and featuring auto power-off and backlight.
Check the instrument for transit damage, verify accessories, and understand the 9V battery operation and low battery indication.
Allow the instrument to acclimatize to normal measuring conditions after storage in extreme environments to ensure accuracy.
Detailed description of the HT4000's physical components and the elements displayed on the LCD screen.
Explanation of the dual functions of keys like POWER/SELECT, HOLD/RECALL, MAX/MIN, and ESC/REC for measurement and data management.
Instructions for activating/deactivating display backlight and changing measurement units for various parameters.
Procedure for connecting the probe, setting units, and taking measurements of air speed, temperature, and humidity.
Guide on how to measure air flow by setting pipe area and taking atmospheric pressure readings using the internal sensor.
Steps for saving measurement results to memory and recalling them for display, including memory cancellation.
General information on maintaining the precision instrument, avoiding high temperatures and direct sunlight, and proper shutdown.
Detailed steps for replacing the battery, including safety precautions for technicians and proper disposal methods.
Instructions for cleaning the instrument with a dry cloth and information regarding the proper disposal of equipment and batteries.
Detailed specifications including measurement units, ranges, resolution, and accuracy for air speed, airflow, humidity, temperature, and pressure.
Details on operating/storage environmental conditions, general data like dimensions and weight, and a list of included accessories.
Details the warranty period, manufacturer's rights, exclusions, and conditions under which the warranty is void.
Guidance on testing battery and probes before contacting service, and procedures for returning the instrument for repair.
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