UNI-T UT352 Sound Level Meter

UNI-T UT352 Sound Level Meter

The UNI-T UT352 is a reliable handheld sound level meter engineered to measure environmental noise levels with precision. It supports both A-weighting and C-weighting modes mimicking human hearing sensitivity for A or offering a flatter response for machine-dominated environments. This instrument allows users to visualize real-time noise data via an LCD display and simulated analog bar graph, along with audible feedback, making ambient sound analysis straightforward and intuitive.

With ranges spanning 30 to 130 dB across multiple selectable segments (e.g. 30–80 dB, 50–100 dB, 60–110 dB, 80–130 dB), the UT352 adapts to diverse noise environments. Users can choose between fast (125 ms) and slow (1 s) response times to capture sudden spikes or average out fluctuations. Temperature-compensated accuracy of ±1.5 dB ensures consistent performance; the meter automatically flags readings that exceed or fall below its measurement bounds.

Built for convenience and endurance, the UT352 stores up to 63 data sets internally for later analysis. It offers both AC and DC analog outputs for external recording or integration with other instruments. Power flexibility is another highlight: it runs on four AA batteries or via external DC (6 V adapter), while auto power-off, low-battery warning, and backlight further enhance usability in the field. CE and UKCA certifications underscore its compliance with European standards.

• MAX/MIN modes
• Auto power off (cancelable)
• 63 sets data storage
• AC/DC analog signal output
• Over/under range indication
• Data hold, LCD backlight
• Simulated analog bar
• A (ear)/C (machine) weighting modes
• Manual/auto range selectable
• Fast/slow response rate (fast: 125ms, slow: 1s)
• Powered by batteries or external power source

Specifications:

Specifications	Range	UT352
Range	30～80dB	±1.5dB
	50～100dB	±1.5dB
	60～110dB	±1.5dB
	80～130dB	±1.5dB
Frequency	31.5Hz～8000Hz	√
Frequency Weighting	A&C	√
Sample Rate	FAST: 8 Times/s	√
	SLOW: 1 Times/s	√
Features
Analogue Outputs	AC: 0.707Vrms full scale; Output impedance: around 600Ω	√
	DC:2Vrms full scale; 10mV/dB; Output impedance: around 100Ω	√
Data Hold		√
Auto Power Off		√
Low Battery Indication	≤4.8V	√
MAX Mode		√
MIN Mode		√
Data Logging		63
High Alarm	Display “OVER”	√
Lower Alarm	Display “UNDER”	√
LCD Backlight		√
Analogue Bar Graph	30～130dB	√
General Characteristics
Power	1.5V Batteries (LR6) X 4
LCD Size	53mm X 41 mm
Product Color	Red and Grey
Product Net Weight	330g
Product Size	273mm X 70mm X 39mm

Applications:

• Environmental noise assessments (e.g., factories, roadsides, events).
• Workplace occupational noise monitoring.
• Quality control in manufacturing or product noise testing.
• Acoustic analysis in healthcare or musical instrument environments.

Package Contents:

• 1x English Operating Manual
• 1x Windscreen (microphone foam)
• 4x AA 1.5 V batteries

Documents:

• Datasheet
• User Manual