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MI Series

MI Series

Product catalog summary

Overview: The LA-1400/4400 series of integrating sound level meters, including models LA-4440 (Class 1), LA-1410, and LA-1440 (Class 2), are designed to meet the latest IEC/JIS standards. These devices are optimized for field measurements, offering ease of operation and cost-effectiveness. They can measure 14 items simultaneously, including the widely used Equivalent Continuous Sound Pressure Level (Leq), with a wide linearity range of 100dB.

Specifications: The series features a frequency range of 10Hz to 20kHz and a measurement range from 30 to 130dB. The devices support frequency weightings A, C, and Z, and time weightings FAST, SLOW, and IMPULSE. They are equipped with USB and RS-232C interfaces for data transfer and remote control.

Key Features:

Simultaneous Measurements: Capable of calculating all 14 measurement items at once, reducing setup errors.
Wide Linearity Range: Measures sound pressure levels from 30 to 130dB without needing range adjustments.
Easy Operation: User-friendly menu navigation with [+] and [ENTER] keys for setup.
Leq Measurement: Provides a reliable index for sound evaluation, crucial for environmental and mechanical noise assessments.
Analog Output: Offers AC, AC-Z, and DC outputs for various analysis needs.
Resume Function: Retains settings after power-off, facilitating quick restart of measurements.

Connectivity and Data Handling: The LA-1440 and LA-4440 models support communication with PCs for data control and storage. They also feature a comparator function for sound level comparison and external control capabilities.

Accessories and Options: The series supports various peripherals, including thermal printers for data output, extension cables for microphone placement, and sound calibrators for accurate measurements.

Applications: Suitable for a wide range of applications, from environmental noise monitoring to industrial and product noise analysis, these sound level meters provide comprehensive solutions for sound measurement needs.

Measurement Range: The device measures sound levels across different frequency weightings: A (26 to 137dB), C (30 to 137dB), and Z (35 to 137dB), adhering to JIS and IEC standards.

Frequency Weighting: Options include A, C, and Z, with intrinsic noise levels of 19dB or less for A, 22dB or less for C, and 27dB or less for Z.

Level Range: The device supports multiple level ranges from 20 to 130dB, with specific ranges allowing measurements from 30 to 130dB.

Time Weighting: Includes Fast, Slow, Impulse, and 10ms settings.

Measurement Items: Capable of measuring Lp, Leq, LE, LN, Lmax, Lmin, and Lpeak, with sampling intervals of 20.8µs for most items and 100ms for LN.

Calibration: Offers electrical calibration via an internal 1kHz sine wave or an external sound calibrator, with SC-3100A recommended.

Display: Features an LCD with LED backlight, displaying numeric and bar indicators, list displays, and trend graphs.

Memory: Manual and auto memory functions store up to 100 addresses for calculated values and 1000 addresses for Lp or Leq across 200 blocks.

Analog Output: Provides AC and DC outputs with selectable frequency and time weighting, with specific voltage ratings and output impedance.

External Control: Includes voltage level inputs and comparator functions with adjustable delay and hold times.

Connectivity: Supports RS-232C and USB for control and data output, compatible with specific printers.

Power Supply: Operates on two AA batteries or an AC adapter, with an approximate battery life of 8 hours.

Environmental Conditions: Operates within -10 to 50ºC and 25 to 90% RH, with storage conditions of -20 to 60ºC and 10 to 90% RH.

Physical Specifications: Dimensions are approximately 78(W) x 263(H) x 47(D)mm, weighing around 375g including batteries.

Accessories: Includes a windscreen, carrying case, hand strap, batteries, and various manuals.

Catalog excerpts

Integrating Sound Level Meter

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Focusing on field measurement with versatile functions, New LA LA-1400 / 4400 series integrating sound level meters conforms to the requirements of the latest standards of IEC / JIS. And also they are designed to focus on field measurement in pursuit of easy operation and cost-effectiveness. All models can measure 14 items simultaneously including Leq, which is popularly used in sound measurement, and have a wide linearity range of 100dB. Settings can be made with an easy-to-follow menu. From measurement of work environment to machine and product noise analyses, you can choose a suitable model...

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Series accomplishes your needs effectively with high-performance. What is Equivalent Continuous Sound Pressure Level (Leq)? There is a diverse array of sound sources to be considered when measuring an object; environmental noises of road and construction site, noise of the working environment at production site in factory, mechanical noise from products such as car, office equipment, and home appliance. The sound level of those generally fluctuates with time. The Leq measurement, which is an average of sound level in specified periods, is an important index for sound evaluation as a representing...

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•Sound Level Meter Functions Chart LA-1410 Linearity range Frequency range Measurement range Time weighting Lp, Leq, LE, LN ( L5, L10, L50, L90, L95, Hi, Low, Ave), Lmax, Lmin, Lpeak Measurement time Manual, arbitrary setup (199h59m59s max.) Total measurement time Measurement value (displayed for each item, ON / OFF selectable) Measurement value list display Trend graph display Trend list display Timer measurement function Trigger measurement function Trigger delay function • Total calculated values: 100 addresses • Total calculated values: 100 addresses X 200 blocks Manual memory Auto memory...

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•Option Comparator output function An optional software LA-0141 can output comparison result when the measured value exceeds the setting value. It makes use of determination of sound level under measurement. Set comparison value Input voltage Output voltage Output connector Rated output current Comparison item Lmax or Lpeak Delay time HOLD time Signal output cable 0ms, 100ms, 1s, 5s *It can be used for the determination only when the measured value keeps exceeding against the setting value. Error-determination caused from single-shot sound can be avoided. When [MANUAL] is set from hold time condition...

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•Basic Specifications LA-1410 Applying standards Microphone Preamplifier Linearity range Frequency range Measurement range Frequency weighting Intrinsic noise Level range Time weighting Measurement items Sampling interval Measurement time Total measurement time Start mode Calibration Recommended sound calibrator Display device Displayed update time Memory Manual memory function Auto memory Lp record Measurement condition memory function Resume Analog output Rated AC output Rated DC output Electrical specification External control input Comparator function (option: LA-0141) Clock function RS-232C...

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MI Series

MI Series

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