|
LA-1410 |
LA-1440 |
LA-4440 |
| Applicable standard |
IEC 61672-1 : 2002 Class 2
|
IEC 61672-1 : 2002 Class 1 |
|
JIS C 1509-1 : 2005 Class 2
|
JIS C 1509-1 : 2005 Class 1 |
| Microphone |
1/2-inch backelectret-type
condensor microphone MI-1432
Nominal sensitivity level:－29 dB
|
1/2-inch backelectret-type
condensor microphone MI-1234
Nominal sensitivity level:－29 dB
|
| Preamplifier |
MI-3111 Preamplifier for mocrophone
|
| Linearity range |
100 dB
|
| Measurable frequency range |
10 Hz to 8 kHz(IEC, JIS)
|
10 Hz to 20 kHz(IEC, JIS) |
| Measurement level range |
A : 26 to 137 dB(IEC, JIS)
C : 31 to 137 dB(IEC, JIS)
Z : 36 to 137 dB(IEC, JIS)
|
A : 27 to 137 dB(IEC, JIS)
C : 30 to 137 dB(IEC, JIS)
Z : 35 to 137 dB(IEC, JIS) |
| Frequency weighting |
A，C，Z
|
| Intrinsic noise |
A : 20 dB or less
C : 25 dB or less
Z : 30dB or less
|
A : 19 dB or less
C : 22 dB or less
Z : 27dB or less
|
| Level range |
20 to 90 dB, 30 to 90 dB, 40 to 100 dB, 50 to 110 dB, 60 to 120 dB, 70 to 130 dB, 40 to 120 dB
|
| Time weighting |
FAST, SLOW
|
FAST, SLOW, Impulse, 10 ms |
| Measurement items |
Lp, Leq , LE, Lmax, Lmin, Lpk, LＮ(LHI, L5, L10, L50, L90, L95, LLO, LAV) |
| Level trend |
Ｌp, every kind of calculated value |
Lp, every kind of calculated value
(Read out the displayed value as auto memory call)
|
| Sampling interval |
31.25 μs (other than LN )
100 ms(LN)
|
20.8 μs (other than LN)
100 ms(LN) |
| Measurement time |
Manual, arbitrary setup (199 h 59 m 59 s max.) |
| Total measurement time |
--- |
Arbitrary setup (199 h 59 m 59 s max.) |
| Start mode |
Manual only |
Manual, timer (time setting, in increment of 1 minute), trigger (can be started after a lapse of specified time [0 to 10 seconds, in increment of 1 second] after trigger detection: trigger delay function) |
| Calibration |
Electrical calibration by internal calibration signal (1 kHz sine wave), calibration by external sound calibrator |
| Recommended sound calibrator |
SC-3120 Sound calibrator (piston-phone type) |
| 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, display by bar indicator: 0.1 s, trend screen: 0.2 s |
| Manual memory function |
Total calculated values: 100 addresses |
| Auto memory function |
--- |
Leq : 1000 addresses x 200 blocks
Total calculated values: 100 addresses x 200 blocks |
| Lp Record memory function |
--- |
Sound level with time weighting is stored at the specified interval. (1000 address × 200 blocks)
Storing intervals (1 ms, 2 ms, 5 ms and 10 ms) |
| 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), 2.238 Vrms/F.S. (wide range), load resistance 10 Ω 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 |
--- |
Operation: toggle operation of start/place in pause
Specifications of hardware: negative pulse input
(voltage level: Low:0.0 to 0.5 V, Hi:3.0 to 50 V)
Pulse width: 100 ms or more
Absolute maximum rated input voltage: 5 V
|
| Comparator function (Option: LA-0141) *2 |
--- |
Set comparison value : 40.0 to 130.0 dB
(in increment of 0.1 dB)
Comparison item : Lmax or Lpeak
Delay time : 0 ms, 100 ms, 1 s, 5 s
HOLD time : 100 ms, 1 s, 5 s, manual
Output logic : negative or positive logic
Output format : open collector
(withstand voltage:+3 to +24 VDC, current:50 mA or less) |
| Timer function |
Built-in (year/month/day/hour/minute) |
| RS-232C |
---
|
Control of operation, data output, print out (to the DPU-414 printer)
Baud rate : 9,600/115,200 bps |
| USB |
---
|
Control of main unit and data output, print out (to BL-112U printer)
USB2.0 FULL SPEED (connecting virtual COM port) |
| Cable extension *3
(Between microphone and main unit)
|
305 m max. |
105 m max. |
| Power requirement |
Type 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
(including batteries) |
Approx. 375 g(including batteries) |
| Accessories |
Windscreen×1 (φ 70 mm), carrying case×1, hand strap×1, type
AA battery × 2 pcs. |
| Option |
-
LA-0141 Comparator output
-
SC-2120A Sound calibrator (speaker type)
-
SC-3120 Sound calibrator (piston-phone type)
-
AG-2010 Microphone extension cable (10 m)
-
AG-2030 (30 m) Microphone extension cable (30 m)
-
AG-2050 (50 m) Microphone extension cable with code reel (50 m)
-
AG-2100 (100 m) Microphone extension cable with code reel (100 m)
-
LA-0203C Tripod for sound level meter
-
PB-7090 AC adapter (100 to 240 VAC)
-
AX-501 Signal input-output cable (2 m)
-
AX-5022 RS-232C cable for PC (2 m)
-
DPU-414 Thermal printer
( 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
-
BL-112UI Recommended thermal printer with USB interface (by SANEI Electronics)
|