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SW-523

DIGITAL SOUND LEVEL METER

数字式噪音计

SW-523

中文

English

01~08

09~16

安全条例

用户须知

初次使用仪器前，请先仔细阅读安全条款和操作指南

在使用仪器之前请仔细阅读本手册中的所有操作指南

和安全条例，没有按照本手册所指引的操作方法使用

仪器有可能会造成仪器的损害、影响测量精度、对使

用者或第三者的人身伤害。

不要用任何方式自行打开或修理仪器，严禁非法改装。

请妥善保管仪器，不要放置在儿童可以接触到的地方，

避免无关人员的使用。

仪器电磁辐射可能对其他设备和装置造成干扰，请不

要在飞机或医疗设备附近使用本仪器，不要在易燃、

易爆的环境中使用仪器。

仪器更换的废旧电池和报废的仪器不可与生活垃圾一

同处理，请按国家或者当地的相关法律规定处理废旧

电池和报废仪器。

仪器出现任何的质量问题，或对使用仪器有任何疑问

时请及时联系当地经销商或深达威仪器厂家，我们将

第一时间为您解决。

专业铸造品质品质成就品牌

- 01 -

- 02 -

功能说明

校正方法

● 本噪音计符合国际委员会IEC651 TYPE2和美国国际

标准ANSI S1.4 TYPE2

● 测量范围30dB～130dB

● 精度可达 ±1.5dB

● A权（模拟人耳）和C权（机械噪音）响应特性选

择。快速/慢速反应速率选择。

● AC和DC模拟信号输出，可连接至频率分析

仪或X-Y轴记录器做数据统计分析。

●10分钟自动关机。

﹡ 请使用94dB@1KHz标准音源

1. 状态设定：A权，FAST，3 0～130dB档

2. 将麦克风头小心插入标准音源孔内

3. 打开标准音源开关，使用一字批调尾部小圆孔

（如图1-13）处的电位器使LCD显示为94.0

﹡ 本产品出厂前已经调校好，建议校正周期为一年

- 03 -

（图1）

SW-523

结构

- 04 -

规格

● 准确度：±1.5dB（以标准声源为准，94dB @1KHz）

● 频率响应：31.5Hz～8.5KHz

● 动态范围：50dB

● 测量范围：30～130dB

● 频率计权特性：A权和C权

● 数位显示：4位数，解析度0.1dB，取样频率为2次/秒

● 动态刻度显示：1刻度代表2dB或1dB、取样频率为2次

/秒

● 动态刻度档位：30～130dB、30～80dB、50～100dB、

80～130dB

● 过载指示：“OVER”和“UNDER”符号表示

● AC信号输出：0.65Vrms/每档满刻度，输出阻抗约

600ohm

● DC信号输出：10mV/dB，输出阻抗约100ohm

● 动态特性：FAST（快速）和SLOW（慢速）两种反

应速率

● 麦克风：6mm电容式麦克风

● 最大值锁定：MAX

● 工作温湿度：0℃～40℃，10%～80%RH

● 储存温湿度：﹣10℃～60℃，10%～70%RH

● 电池类型：3x1.5V AAA

● 外形尺寸：215x63.5x27mm

- 05 -

功能（如图1）

1. 电容麦克风;

2. 显示面板;

3. 电源开关;

4. 档位开关：30～80、50～100、60～110、80～130、

30～130;

5. 最大值（MAX）和最小值（MIN）开关;

6. 频率加权（A/C）选择开关频率加权A为人耳所感觉

噪音量频率加权C为机械噪音特性;

7. 时间加权（FAST/SLOW）选择开关：FAST（快速）：

使用125毫秒的时间常数，在大多数情况下均设定

如此；LOW（慢速）：使用1秒的时间常数，此常数

可使变动位更稳定;

8. 背光灯控制按键;

9. AC模拟信号输出插孔;

10. DC模拟信号输出插孔;

12. 海绵球（防风罩);

13. 校正孔;

14. 电池盖;

（图2）

- 06 -

1. 测量范围指示

2. 电量符号

3. 噪音值显示

4. 噪音单位分贝

5. A权和C权

6. 模拟刻度

7. OVER警示符号（读值超过该档位最大时显示）

8. SLOW（慢速反应）

9. FAST（快速反应）

10. UNDER警示符号（读值低于该档位最小时显示）

11. MAX最大值显示

12. MIN最小值

9 8 7

11 12

LCD显示说明（如图2）

- 07 -

1. 使用前，请您打开产品背面的电池盖，正确装上三

颗AAA（7号）电池。

2. 盖好电池盖并使用。

3. 当电池电压不足时，LCD会显示电量符号，表示此时

电池电量低，须更换新电池。

1. 按下电源开关开机。

2. 按下▲或▼选择适合的刻度档位测量当前噪音，以不

出现“UNDER”或“OVER”为准。

3. 要测量以人耳为感觉的噪音请选用dBA，要测量机械

噪音请选用dBC。

4. 要读取即时的噪音量请选择FAST，如果获得当时的平

均噪音量请选SLOW。

5. 如要获取噪音量的最大值可按“MAX”键。

操作前准备事项

操作步骤

- 08 -

1. 请勿置于高温，潮湿的地方使用。

2. 环境噪音必须低于被测物体之噪音才可以正常测量。

3. 长时间不使用请取出电池，避免电解液漏出损伤本

产品。

4. 在室外测量噪音的场合，可在麦克风头上装上防风

罩，避免麦克风直接被风吹到而测量以其它的杂音。

5. 使用环境条件：200公尺高度以下，相对湿度≤80%

RH，工作环境温度 0℃～40℃室内使用。

注意事项

- 09 -

Safety Regulation

Please read intently the safety regulation and

operation manual before your first time using.

◆ Read this operation manual and safety regulation

before using this instrument. Operating it may cause

damage to instrument, or affect metrical accuracy,or

body damage to user or partners if you don't follow this

manual.

◆ Don't try to open or fix instrument by any means,

refitting is not allowed. Keep it carefully, don't place it

on where can be reached by children, and avoid people

who has no knowledge on it using the instrument.

◆ Electromagnetic radiation of this instrument may cause

interference to other instruments or devices. Don't use

it nearing airplane or medical instruments,and in

flammable,volatilizable circumstance.

◆ Th used battery or instrument beyond repair should be

dealt with by national or local related legal stipulation,

and can't be handled with general life garbage.

◆ If there are any quality problems, or doubts about

using of instrument, please contact the local franchiser

or Sndway industry, we will solve it as soon as possible.

- 10 -

Function declaration

Adjusting mean

1. This meter is according with standard IEC651 TYPE2

of The National Committee and The American National

standard ANSI S1.4 TYPE2.

2. The range of measurement : 30dB~130dB.

3. The accuracy : ±1.5dB.

4. Two characteristic choices of A weight(simulates human

's ears) and C weight(mechanical noise) response. Two

reaction rate choices of quick and low speed .

5. The output of AC and DC analog signal can be

connected to frequency analyzer or X-Y axis recorder

for statistic analysis of data.

6. Shut itself down automatically after no operation

around ten minutes.

* Please use 94dB@1KHz standard sound source

1. State setting: A weight, FAST, 30~130dB shift

2. Place the head of microphone into the hole of standard

sound source carefully

3. Turn the sound source on, use a slot type screwdriver

to adjust potentiometer that is inside a little hole at the

bottom(as shown in 1-13) till the LCD display screen

shows 94.0

* This product is already adjusted before go out, and the

period of adjustment is one year, we recommend.

- 11 -

Struction

figure 1 13

- 12 -

Specification

1. The accuracy: ±1.5dB(based on the standard sound

source 94dB@1KHz)

2. Frequency response range: 31.5Hz~8.5KHz

3. Dynamic state range: 50dB

4. Measurement range: 30~130dBA、35~130dBC

5. Frequency weighting character: A weight and C weight

6. Numerical digit display: 4 digits, resolution 0.1dB,

sampling frequency 2 times/second

7. Dynamic scale display: 1 scale equals 2dB or 1dB,

sampling frequency 2 times/second

8. Dynamic scale shift: 30~130dB、30~80dB、50~100dB、

80~130dB

9. Over capacity display: \"OVER\" and \"UNDER\" in display

screen

10. AC signal output: 0.65Vrms for each shift and full

scale, the output of impedance around 600ohm

11. DC signal output: 10mV/dB, the output of impedance

around 100ohm

12. Dynamic character: Two choices of reaction rate

\"FAST\" and ”SLOW“

13. Microphone: 6mm capacitor microphone

14. Max locking: MAX

15. Batter: 3x1.5V AAA

16. Working temperature and humidity: 0℃~40℃,

10%~80%RH

17. Storage temperature and humidity: -10℃~60℃,

10%~70%RH

- 13 -

Function(as shown figure 1)

1. Capacitor microphone

2. Display screen

3. Power

4. Shift: 30~80、50~100、80~130、30~130

5. Max/Min

6. Frequency weighting(A/C)

A weighting is for the sound volume of frequency that

can be felt by human's ears C weighting is for

mechanical noise character.

7. Time weighting(FAST/SLOW)

FAST: 125millisecond set as time constant can be

used in many situations

SLOW: 1second set as time constant is to make sure

of stabling variable digit

8. Backlight control key

9. The output port of AC analog signal

10. the output port of DC analog signal

12. Sponge ball(windshield)

13. Hole for adjustment

14. Battery cover

- 14 -

LCD display illustration

9 8 7

11 12

1. the measurement range display

2. the power display

3. the value display

4. the unit display

5. A/C weight display

6. analog scale

7. OVER warning signal(the value is beyond the max of

scale in this shift)

8. SLOW(react slowly)

9. FAST(react fastly)

10. UNDER warning signal(the value is below the min of

scale in this shift)

11. the max value display

12. the min value display

figure 2

- 15 -

Preparation before operation

Operation process

1. Before using it, please open the battery cover on the

back of the product and put three AAA batteries in

correctly.

2. Put the battery cover back.

3. When the power is low, the power signal in LCD screen

will be light, at this time, batteries should be changed.

1. Press the power key to turn it on.

2. Press ▲ or ▼ to choose suitable scale for current

noise, based on no \"UNDER\" or \"OVER\" light.

3. Choose dBA for noise that can be felt by human's ears,

choose dBC for mechanical noise.

4. Choose FAST for current reading, choose SLOW for

average reading.

5. Press \"MAX\" key for the max value.

- 16 -

Attentions

1. Do not use it in high temperature,humid circumstance.

2. Make sure that noise of circumstance is below the

noise you test.

3. Take batteries our if you don't use it for a long time to

prevent leakage of electrolyte from damaging the

product.

4. Put the windshield on in outdoor in case the

microphone is winded directly so that it could test

other noises.

5. Operation environment conditions: below 200 meter

height, the relative humidity≤80%RH, environment

temperature 0℃~40℃ indoor.

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