Kanomax 3521 Guía de inicio rápido

Piezoelectric Balance Dustmeter

MODEL 3521

Before any use, read the manual carefully and understand correctly its content and

warnings and precautions indicated therein.

Kanomax Instrument (Shengyang) Co., Ltd.

Take good care of this manual for future reference.

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Operational Manual

Before Use

Our company sets the following regulations on the warnings in the manual:

[Notes to the mark]

Danger：For prevention of personal injury caused by an accident

The mark implies that there will be a danger of personal injury if improper

operation is conducted by ignoring the mark.

Note: For prevention of the product from any damage.

The mark implies that any product will be damaged or its performance will fail

if improper operation is conducted by ignoring the mark.

[Notes to the legend]

△ The mark denotes precautions(including danger). The Legend depicts the content of attention.

(Left legend is for protection from high temperature).

The mark denotes prohibitions. The legend depicts prohibitions.

(Left legend is for prohibition of dismantling).

● The mark denotes compulsory acts and instructions. The legend depicts instructions.

Danger

○ The instrument should be far away from any

environment containing combustible gases.

○ Never dismantle or heat the battery box

or throw it into fire.

…… Explosion hazard

○Never do any

cleaning in the

high-voltage

supply period.

Prohibition

Guard against

crack

Correct use

Prohibition

Note

○ The instrument should not be impacted heavily.

……If it drops or collides, damage or

trouble will occur easily.

○ Never dismantle, modify or repair the instrument by yourself

……this will lead to short circuit and malfunction

of the instrument.

○ Don’t seal the impacter port with your finger

…… this will lead to the pump failure.

○ Don’t measure in any environment with sharply changing

temperature and humidity

…… it can cause measurement error.

○ Don’t use volatile solvents for wiping the body.

……The surface stains can be removed with a soft cloth. Stubborn stains

can be removed with a soft cloth containing neutral cleaner. Volatile

solutions including thinner and gasoline are prohibited, otherwise Prohibition

the casing may be deformed and deteriorated.

○Miscellaneous airstream should be kept away from the

measuring hole and the effect of air conditioner and cooling fan avoided.

……it can cause measurement error.

Prohibition

Prohibit modification/ dismantling.

Prohibition

Correct use

Thank you for the purchase and the use of Kanomax

products. Please read the operational manual carefully and

do observe relevant precautions for your correction

operation of the precision instrument.

■Table of Contents

1. Working Principle 1

2．NameofParts 2

3．Specifications 4

4．InstallationofPartsandPreparationforTesting 5

5．Measuring Method 11

6．BatteryIndication 12

7．Changing 12

8．SettingtheMenu 13

9．Printing 16

10．Regular Maintenance and Replacement of Impacter Snout 17

11. Confirmation of Troubles 20

12．Warranty/ Repair and After-Sale Service 21

Working Principle

The measuring principle of the piezoelectric balance-type dust counter is completely different

from that of the previous light random type. This measurement calculates the concentration of dust

in air by directly measuring the weight of dust in air per unit volume. As a result, both stability

and precision are greater than by light random mode.

The dust particle in the air is spread in a diameter ranging from subparticle to tens of

micrometer. The instrument is graded by use of an impacter and specially measures the

concentration of dust particles that affect the human body, namely, the dust concentration in the

range of subparticle to tens of micrometers. The graded suspended particle has nothing to do with

the diameter of particle. Dust is colleted onto the piezoelectric element (crystal) at an approximate

rate of 95% by electrostatic collection method. Depending upon the dust mass collected, the

inherent frequency of the piezoelectric element will change correspondingly, proportional to the

dust mass collected. The instrument calculates the concentration value finally in terms of the

change in frequency of the piezoelectric element after a certain quantity of air absorbed in a given

time and dust particles are collected onto the piezoelectric element. The calculation formula:

C=α×f

C ---- Concentration value

f ---- Frequency difference measured for the crystal

α---- calculation factor，α=1/EStQ, E=charged efficiency, S=crystal sensitivity, t=test time,

Q=flow.

Besides, in this instrument, two piezoelectric elements are used to correct the temperature

error, thereby improving the precision and stability of measurement greatly. The sampling air is

absorbed by a subminiature rotary pump and its air flow has nothing to do with the change in

power voltage. The use of electronic governor ensures the stability of the instrument to absorb air

in a given time. As these gears are adopted, the measurement precision is improved remarkably

with guaranteed stability.

Processing of data measured: the instrument adopts MCU for control, which features great

speed, few errors and menu set-up. It can store 500 data records and can communicate with the

computer or print out data directly, thereby making it more intelligent.

Besides, the dust deposited on the elements should be removed by manual cleaner.

Name of Parts

 Name of Parts

Display screen

Probe

Impacter

Display scree

contrast adjuster

Key

Power

switch

Cleanin

Communicatio

interface

Cleaning

Adaptor interface

Cell box fixed button

Cell box

Cleaning box fixed button

Cleaning box

Cleaning

sponge

 Display Screen

2002/12/12 12:12:12

MEMORY START

hgf

120s No:003 ｜｜

1.0８ｍｇ／ｍ３

｜｜

a．Date & Time-------- Current date & time

b．Measurement mode-------- Time for measurement can be set to 120s, 24s or at random

by users (10~3600s).

c．Storage record -------- It displays current record number with 500 data to be

stored at most. When measurement is over, “STORE” will be blinked,

prompting the data can be stored. Press “MEMORY” key to store the data.

d．Surplus of cleaning -------- As the crystal absorbs more and more dust, this

item becomes smaller to the right. When the crystal dust exceeds 10μg

“cleaning” will be blinking here, the crystal must be cleaned.

e．Concentration value -------- Upon measurement, the value will be blinked

f．Status of operation -------- upon cleaning and starting for the stability of the crystal

frequency, “wait” is blinked upon energization, “ready” is shown and upon

measurement residual time will be displayed.

g．High voltage pointer --------Upon energization at high voltage, the high voltage will be

shown when the pointer enters into the black part in the middle of the frame, the status

of operation will turn to “ready”. Then measurement can begin.

h．Cell mark -------- Power of cell is shown section by section.

 Key

Menu key

Upward key

MEAS

CLN

High voltage keyDownward key

Measurement start key

SET

Set key Memory Key

Main Specifications

Name Piezoelectric Balance Dustmeter

Model Model 3521

Measurement Object Weight concentration of particles drifting in the air indoor or outdoor

使用温度范围 -10℃～40℃

保存温度范围 -30℃～60℃

Measurement Range 0～10mg/m3

Diameter of Particle to Be

Measured Below Φ10μm，below Φ7.07μm（by changing the impacter nozzle）

Measurement Time 120s, 24s, 10～3600s（measured through the menu）

Measurement Precision ±10%（Indicated value）

Elutriating Apparatus Inertial impact elutriating apparatus (impacter)

Suction Flow 1l/min

Cleaning Gear Manual cleaning crystal

Communication Protocol Standard RS232

Communication Baud Rate 4800bps, 9600bps, 19200bps (set through the menu)

Number of Data Memory 500

Weight About 2.4kg

Overall Dimension 65（w）×180（l）×150（h）mm

Power Source

1) AC/Dc adaptor (input: AC100～240V)

2) Built-in Ni-Mh cell (9.6V-1.5AH), 4.5h for consecutive use and

5-8h for charging

Attachments (on delivery)

1) Cleaning box ……… 2

2) Cleaning sponge ……… 2group

3) The sponge erection plate ……… 1

4) Cleaning agent ……… 100cc

5) Strap ……… 1

6) Sponge pressure plate ……… 1

7) Burettes ……… 2 个

8）AC/DC adaptor ……… 1

9) Φ7.07μimpacter nozzle ……… 1

10) Communication cable ……… 1

11) Communication software CD ……… 1

12) Directions for use ……… 1 copy

13) Printer (optional) ……… 1 unit

14) Adaptor of printer (optional) ……… 1 unit

15) Print Cable (optional) ……… 1 unit

Installation of Parts and Preparation for Testing

●Dismantling and Installation of Battery Box

(1) First press “the Fixing batteries box button” and then slide the battery box down the

channel guide as shown in the figure below.

Fixing the batteries bo

button

Batteries box

(2) Press “fixing batteries box button” to the bottom, slide the batteries box horizontally

along the groove as shown in the figure below.

(3) Installation of battery box: inverse the sequence of (1)and (2) and push up the battery

box, the installation is over.

（4）Installation of battery box: inverse the sequence of (1), (2) and (3) and push up the

batteries box, the installation is over.

Groove

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