UM51 200 - Thermometer VOLTCRAFT - Free user manual and instructions
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| Product type | Environmental measurement instrument (anemometer, luxmeter, sound level meter, thermometer, hygrometer) |
| Weight | 282 g (instrument without accessories) |
| Power supply | 1 x 9 V battery |
| Display | Large LCD screen with backlight |
| Measurement functions | Sound level, light intensity, wind speed, air temperature, type K temperature, relative humidity |
| Measurement ranges | Sound: 30-130 dBA; Light: 0-20000 Lux; Wind: 0.4-30 m/s; Air temp.: -30 to +60°C; Type K temp.: -200 to +1372°C; Humidity: 0-100% RH |
| Interface | USB (USB-UART bridge) |
| Intended use | Indoor comparative measurements (factories, schools, offices, home). Not for medical or outdoor use. |
| Safety | Avoid humidity, extreme temperatures, shocks. Do not use in explosive atmosphere. Observe battery polarity. |
| Maintenance | Clean with a dry, lint-free cloth. No aggressive products. |
| Included parts | Probes (temperature/humidity, type K, anemometer, light), tripod, USB cable, software CD, carrying case, 9 V battery |
| Repairability | Repairs by qualified technician only. No spare parts listed. |
| Configuration options | Changeable units (°C/°F, Lux/FC, dBA/dBC, m/s/ft/min, etc.), adjustable auto power off, temperature offset. |
| Additional functions | HOLD, MIN/MAX/AVG recording, backlight, disableable auto power off. |
Frequently Asked Questions - UM51 200 VOLTCRAFT
How to measure sound level with the Voltcraft UM51 200?
Turn on the device, press button (3) to switch to SOUND mode. Point the microphone (9) towards the sound source at about 1 m. Use the wind protection if necessary (>10 m/s). The level is displayed in dBA or dBC.
How to change the battery of the UM51 200 thermometer?
Turn off the device. Unscrew the battery compartment cover on the back. Replace the used battery with a new 9 V battery, respecting polarity. Close carefully.
How to use the HOLD function on this device?
During a measurement, press the HOLD button (4) to freeze the displayed value. The HOLD symbol appears. Press again to release.
How to measure temperature with a type K probe?
Connect the type K probe to the TYPE K + and - connectors. Turn on the device, press (5) to display the type K temperature. Hold the probe on the measurement point. The unit can be changed with (13).
How to disable auto power off?
In SETUP mode (long press on button 3), select SLP with the ▲/▼ buttons. Press (15), choose OFF with ▲/▼, confirm with (15). Exit SETUP mode.
What to do if the screen shows no value?
Check the battery (charge level) and sensor connections. If the screen remains blank, replace the battery or perform a reset by disconnecting/reconnecting the battery.
How to measure light intensity with the luxmeter?
Connect the light probe to the LIGHT socket. Turn on, press (3) until LIGHT appears. Remove the protective cap and point the sensor towards the source. Use (14) to switch between Lux and Fc.
How to configure the temperature unit (°C/°F)?
Access SETUP mode (long press on button 2). Select TEMP with ▲/▼, press (15), choose °C or °F with ▲/▼, confirm with (15). Exit SETUP mode.
Can I use this device outdoors?
No, use is only allowed indoors. Avoid humidity, rain, and explosive atmospheres. Sensors can be used remotely if the instrument stays dry.
How to connect the device to a computer?
Install the software provided on CD. Connect the USB cable between the device (USB port) and the computer. The instrument turns on automatically. Launch the program to transfer data.
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