Ono Sokki รุ่นLA-1411เครื่องวัดระดับเสียงความแม่นยำสูงAIntegral average precision sound level meter LA-1411 Class2

LA-1411

Applicable standard

IEC 61672-1 : 2013 Class 2

JIS C 1509-1 : 2017 Class 2
JIS C1516 : 2014 Class 2

Microphone

1/2-inch backelectret-type
condensor microphone MI-1433
Nominal sensitivity level:-29 dB

Preamplifier

MI-3111 Preamplifier for mocrophone

Linearity range

100 dB (Wide range), 80 dB (Normal range)

Measurable frequency range

10 Hz to 8 kHz(IEC, JIS)

Measurement level range

A : 26 to 135 dB(IEC, JIS)
C : 31 to 135 dB(IEC, JIS)
Z : 36 to 135 dB(IEC, JIS)

Frequency weighting

A，C，Z

Intrinsic noise

A : 20 dB or less
C : 25 dB or less
Z : 30 dB or less

Level range

20 to 90 dB, 30 to 90 dB, 40 to 100 dB, 50 to 110 dB, 60 to 120 dB (Normal range),
70 to 130 dB, 40 to 120 dB (Wide range)

Time weighting

FAST, SLOW

Measurement items

L_p, L_eq , L_E, L_max, L_min, L_peak, L_Ｎ(L_high, L₅, L₁₀, L₅₀, L₉₀, L₉₅, L_low, L_ave)

Level trend

Ｌ_p, every kind of calculated value

Sampling interval

31.25 μs (other than L_N )
100 ms(L_N)

Measurement time

Manual, arbitrary setup (199 h 59 m 59 s max.)

Total measurement time

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Start mode

Manual only

Internal calibration signal (REFOUT)

1 kHz sine wave (For upper limit level range : -6 dB(normal range), -16 dB(wide range))

Recommended sound calibrator

SC-2500,SC-3120,SC-2120A

Display

LCD with LED backlight semitransparent (124 x 64-dot)
Measurement value display by numeric and bar indicators
List display and trend graph display for various kinds of calculated values
Displays of date, time, measurement time, and conditions of various kinds of instruments

Display update time

Display by numeric:1 s, bar indicator: 0.1 s, trend screen: 0.2 s

Manual memory function

Total calculated values: 100 addresses

Auto memory function

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L_p Record memory function

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Measurement condition memory function

Condition memories (9 kinds)

Resume function

Settings activated at power ON can be selected from follows; settings used at previous power OFF, factory setting, and any condition memory number which is set from menu.

Backup function

The backup of data stored in clock and memory can be performed by built-in secondary power source.
• Time for full charged: approx. 24 hours
• Backup period: more than 3 months (when stored at temperature of 23 °C)

AC output *¹

0.707 Vrms/F.S (normal range), 2.236 Vrms/F.S. (wide range), load resistance 10 kΩ or more (with upper-limitation value of bar indicator)

Frequency weighting can be selected: conjunction with selected frequency weighting or fixed to Z-weighting.

DC output *¹

2.5 V/F.S. (with upper-limitation value of bar indicator)
Amount of voltage fluctuation per 10 dB: 0.25 V
Load resistance: 10 kΩ or more

External control input

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Comparator function

(Option: LA-0141) *²

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Timer function

Built-in (year/month/day/hour/minute)

RS-232C

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USB

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Cable extension *3

(Between microphone and main unit)

305 m max.

Printer function

-

Power requirement

Size AA battery × 2 pcs.
(manganese (6R) or alkaline (LR6) or oxyride (ZR6)) or PB-7090 AC adapter (option))

Battery life (continuous using)

Approx. 8 hours (LR6 alkaline battery in use / 23 °C/ backlight off / not RS-232C･USB in use)

Operating (storage) temperature range

-10 to 50 °C (-20 to 60 °C)

Operating (storage) humidity range

25 to 90 %RH (10 to 90 %RH) with no condensations

Outer dimensions

Approx. 78(W) × 263(H) × 47(D) mm

Weight

Approx. 360 g (including batteries)

Accessories

Windscreen×1 (φ 70 mm), carrying case×1, hand strap×1,
size AA battery × 2 pcs. instruction manual(CD), simple,operation guide

Option

• LA-0141 Comparator output option
• SC-2500 Sound calibrator (Class1)
• SC-3120 Sound calibrator (Class1/c)
• SC-2120A Sound calibrator (Class2)
• AG-2010 Microphone extension cable (10 m)
• AG-2030 Microphone extension cable (30 m)
• AG-2050 Microphone extension cable with code reel (50 m)
• AG-2100 Microphone extension cable with code reel (100 m)
• LA-0203D Tripod for sound level meter
• PB-7090 AC adapter (120 to 240 VAC)
• AX-501 Signal input-output cable (2 m)
• AX-5022A RS-232C cable for PC (2 m)
• DPU-414 Thermal printer for RS-232C
( AX-5024 RS-232C cable for printer (2 m) is supplied as standard)
• PW-C0725-W2-U AC adapter (100 to 240 VAC) for DPU-414 (by SEIKO instruments)