Chen Yang CYGM99A User manual

Digital Gauss/Tesla Meter

CYGM99A

User’s Manual

ChenYang Technologies GmbH & Co. KG

Markt Schwabener Str. 8

85464 Finsing, Germany

Tel. +49-(0)8121-2574100

Fax: +49-(0)8121-2574101

Email: in[email protected]e

http://www.chenyang.de

The Gaussmeter CYGM99A works according to Hall Effect measuring

principle. It is a microprocessor controlled instrument and can be used to

measure DC/AC magnetic field strength of permanent magnet materials,

motors, speakers, magnetic sensors/ transducers, other machines and

instruments etc. with high resolution. It is powered with 3 pieces of AA

batteries (+1.5VDC) or via USB cable (+5VDC).

1. Characteristics

- Wide measuring range and high resolution

- A low-cost measuring device, which is easy to operate, portable

and convenient to handle and store.

- Ideal for quick quality checks and comparative measurements,

with built-in polarity display.

- Data communication with computer via USB cable for further

signal processing.

- Remote control by computer.

2. Technical Data

Measuring ranges: 0-50mT, 0-200mT, 0~500mT and

0-2000mT

Basic accuracy: DC: ±1.0%, AC: ±2.0%

Resolution: DC x1: 0.0 ~ 50.000mT, 0.001mT

DC x10: 0.0 ~ 500.00mT, 0.01mT

DC x1 0.0 ~ 200.00mT, 0.01mT

DC x10 0.0 ~ 2000.0mT, 0.1mT

AC x1: 0.0 ~ 50.000mT, 0.001mT

AC x10: 0.0 ~ 500.00mT, 0.01mT

AC x1: 0.0 ~ 200.00mT, 0.01mT

AC x10: 0.0 ~ 2000.0mT, 0.1mT

Measuring magnetic field: DC/AC (static & dynamic field)

AC frequency range: 10Hz ~ 10kHz

Functions: Automatic range x1/x10 selection

Automatic unit Gs/mT selection

Automatic probe zero adjustment

N/S pole display for DC measurement

RMS/Peak value for AC measurement

Max hold, Min hold, Display hold

Local/Remote control

Display: 5 Digit LCD

Display Unit: mT/Gs (1mT=10Gs)

Ambient temperature: +5°C ~ +50°C

Storage temperature: -20°C ~ +70°C

Relative humidity: 20% ~ 80%

Power supply: 3 x 1.5V AA batteries or USB 5V

Dimensions: 190mm x 90mm x 33mm

Weight: 365g

3. Accessories

1. 3 x 1.5V AA batteries (not included if the transport is by air freight)

2. 1 x Hall probe CYTP98B (option: CYTP98A/CYAP98A/CYAP98B)

3. 2 x 0.9m USB Cable

4. 5V DC Voltage adapter (standard mobile phone charger)

4. Hall probes

Probe Name

transverse probe

Part number

CYTP98A

CYTP98B

Measuring range

0-50mT, 0-500mT

0-200mT, 0-2000mT

Probe size

1.5 x 4 x 65mm

Picture

Probe Name

axial probe

Part number

CYAP98A

CYAP98B

Measuring range

0-50mT, 0-500mT

0-200mT, 0-2000mT

Probe size

Ø7 x 80mm

Picture

5. Measuring Principle

The Gaussmeter works according to Hall Effect principle. There are two

kinds of Hall probes: transverse and axial probes, which are used for

different magnetization directions.

According to the Hall Effect, a voltage can be measured at right angle to

the current path when a conductor or semiconductor with current flowing

in one direction is introduced perpendicular to a magnetic field. The Hall

voltage can be calculated from:

BIkV HHH 

Where: VH: Hall voltage in volts

B: the applied field in Gauss

kH: sensitivity of the element in volts/Gauss

I: bias working current in amperes

The initial use of this discovery was for the classification of chemical

samples. The development of indium arsenide semiconductor compounds

in the 1950's led to the first useful Hall Effect magnetic instruments. Hall

Effect sensors allowed the measurement of DC/AC (static/dynamic)

magnetic fields without requiring motion of the sensors.

6. Measuring Method

The magnetic lines of the measured magnetic field should perpendicularly

pass through the Hall Effect element of the Hall probe.

Put the Hall probe on the surface of the measured magnet or at the

measuring point of a magnetic field carefully.

Electric

Charge

Hall Effect and its Electrical Parameters

Vertical

direction

7. Part and Functions

Front Panel

1: USB A port for probe 2: LCD 3: Unit select

4: Zero reset 5: RMS/Peak select 6: Max/Min hold

7: Local/Remote select 8: Power switch 10: Display hold

11: AC/DC mode 12: Measuring range

9: USB micro B port for PC connection or voltage adapter

The sensing plan of the Hall

sensor/probe should be

positioned perpendicular to the

magnetic field

Measurement of magnetic field

in a space or gap

Incorrect use of Hall probe,

too large measuring force,

Easy damage the Hall probe!!

Measurement of AC

magnetic field

generated by AC

current

DC magnetic field

AC Magnetic field

Measurement of

surface flux density

of a magnet

Hall probe

13: USB micro B port for measuring instrument 14: Hall chip

Functions:

1) USB A port for probe: to connect the Hall sensor/probe to the

measuring instrument.

2) LCD: to display the field strength and pole direction (“N” north pole,

“S“ south pole) etc.

3) Unit select: to select the display unit (Gs or mT).

4) Zero reset: to reset the measuring value.

5) RMS/Peak select: to select the display format of AC signal (RMS

value or Peak value).

6) Max/Min hold: to hold the max/min value.

7) Local/Remote select: to select the control mode (local or remote).

8) Power switch: to switch ON/OFF the measuring instrument.

9) USB micro B port for PC connection: to connect the external 5V

power supply and for data communication between Gaussmeter and

10) Display hold: to hold the current value.

11) AC/DC mode: to select the measurement of AC or DC magnetic field.

12) Measuring range: to select the measuring between range 0-50mT

and 0-500mT for Hall Probes CYTP98A and CYAP98A or between 0-

200mT and 0-2000mT for Hall Probes CYTP98B and CYAP98B

13) USB micro B port of Hall probe: to connect the Hall probe to the

measuring instrument.

8. Measuring Procedure

1) Connect the Hall probe (13) to the measuring instrument (1) via micro

USB cable.

2) Install 3 x 1.5V AA battery to the battery compartment or connect the

+5V power supply via USB cable to the measuring instrument.

3) Switch on the power of measuring instrument by pressing “ON/OFF”

button (8), LCD display shows 0000.0mT or other value.

4) Select measuring range by pressing the “Range” button (12), the

measuring range changes between 0-200mT and 0-2000mT as

follows (as example by using Hall probe CYTP98B or CYAP98B):

0-2000mT

0-200mT

Pole display (DC)

Measuring value

Display hold

Max/Min hold

RMS/Peak display (AC)

Data transmit

High-speed mode

Display unit

Power display

5) Select AC/DC Mode by using the “AC/DC” button (11), the display

shows the following DC or AC measuring mode:

“N” north pole, “S“ south pole for DC magnetic field

6) Select unit by pressing “Unit”(3), unit changes between Gs and mT

7) Reset Gaussmeter. Keep the Hall probe far away from magnetic

field or put it in a Zero point calibrator , LCD display shows zero after

pressing “Reset” button (4):

Note: You must reset the Gaussmeter before you start a new

measurement after you have changed the measuring range (12) and

AC/DC mode (11).

8) Select Max/Min hold by pressing the “Min/Max” button (6).

Note: Under the Max/Min mode the display changes only when the

actual measuring value is larger/smaller than the last value displayed.

Therefore you must firstly reset to the normal mode by using button

(6), if you need to measure a magnetic field, which is smaller/larger

than the previously measured value.

9) Select display format of AC signal by using the “RMS/Peak” button

(5). The measuring results are shown in RMS or peak value as

follows:

Note: AC measuring results are assumed as sinusoid magnetic field

signal. The RMS or amplitude of fundamental wave is displayed on

LCD.

DC magnetic field

AC magnetic field

Unit: mT

Unit: Gs

Normal display

Min hold

Max hold

RMS

Peak

10) Display hold can be selected by pressing “Hold” button (10).

11) Take off the protective tube of the Hall probe, position the Hall probe

(14) on the surface of the measuring object (such as permanent

magnet), and read the display value (measuring value and pole

display “N” or “S“, N for north pole, S for S pole).

Note: The magnetic pole of the measuring object is N pole if the

display shows “N” while the label side of a transverse Hall probe is

faced towards the surface of the measuring object. In this case you

can read the mark SONNECY of the Hall probe (see picture below).

The magnetic pole of the measuring object is N pole if the display

shows “N” when the end of an axial Hall probe is put on the surface of

the measuring object.

12) After the measurement please put the protective tube on the Hall

probe in order to protect the Hall element and switch off the power

13) The Hall probes delivered are calibrated by using an identical

reference Gaussmeter CYGM99A. Therefore all of our Hall probes

are compatible for the Gaussmeter CYGM99A.

9. Control with PC

1) Connect the measuring instrument (9) to PC via USB cable and install

the CH340G driver for new detected device. This measuring device is

identified as a serial port COMx.

2) The measuring instrument has a full duplex serial port, which is

configured with 1MHz baudrate, no parity check and one stop bit.

User can send following 1 byte ASCII code to select corresponding

functions.

No.

ASCII Code

Explanation (for CYTP98B and CYAP98B)

Measuring range is 0-2000mT (larger range)

Measuring range is 0-200mT (smaller range)

AC magnetic field

DC magnetic field

Zero reset

Max hold

Min hold

RMS value for AC measuring

Peak value for AC measuring

Hold mode

Normal display

Remote control (PC)

Local control (keypad)

Start sending data to PC

Stop sending data to PC

High-speed mode

Normal-speed mode

3) In order to enable the remote control, “C” must be sent firstly. The

measuring instrument is back to local control, when “K” is sent or

“Local/Remote” button (7) is pressed.

Normal display

Hold mode

Local control

Remote control

Label Side

Mark SONNECY Side

In the remote control mode all ASCII instructions can be responded.

Remote control instructions 1-11 are identical with keypad functions.

Therefore the rest of instructions should be only explained in

following.

4) Enable or disable data sending by using “B” or “E” instruction. The

measuring results in unit “mT” are sent to the computer continuously.

The sampling frequency is 1024 samples per second. (Data format is

shown in chapter 10.)

Note: The tracing values are sent to PC via USB. It means that the

received value should be identical to the value shown on LCD in DC

mode. But in AC mode, the received data is the tracing value of AC

magnetic field, which is different from the RMS or peak value shown

on LCD.

5) Enable or disable high-speed mode by using “H” or “N” instruction.

In order to reach a higher data throughput, high-speed mode can be

enabled for transmitting 10240 samples per second.

Note: These two instructions are only responded when data sending

is disabled.

10. Data Format

When data sending is enabled, the measuring instrument sends data to

PC continuously, which indicates the tracing value of magnetic field in unit

“mT”. The sampling frequency is 1024 S/s in normal-speed mode and

10240 S/s in high-speed mode.

1) In normal-speed mode the measuring results are sent in ASCII form.

Each 7 bytes represent a complete result with sign, as shown below.

Measuring range 0-2000mT:

Sign

Integer Part

Decimal Point

Decimal Part

1 byte

4 bytes

1 byte

Measuring range 0-500mT and 0-200mT:

Sign

Integer Part

Decimal Point

Decimal Part

1 byte

3 bytes

1 byte

2 byte

Measuring range 0-50mT:

Sign

Integer Part

Decimal Point

Decimal Part

1 byte

2 bytes

1 byte

3 byte

For example, in the measuring range 0-2000mT following bytes mean

1234.5mT with N polarity.

Binary

0x2B

0x31

0x32

0x33

0x34

0x2E

0x35

ACSII

2) In high-speed mode the original binary codes are sent, which are the

conversion result of a 14-bits ADC. Theoretically the data range 0-

16383 of the converted result corresponds the minimum and

maximum magnetic field strength of current measuring range.

Conversion result of ADC

2 bytes

For example, under measuring range 0-2000mT following bytes mean

586.9mT with N polarity

Binary

0x32

0xC8

Decimal

200

((50*256+200)-Offset)/nADC*MR=586.9mT

where Offset=8192 is the theoretic offset of ADC conversion result,

nADC=16384 is the ADC data range and MR=2000mT is the current

measuring range.

Normal-speed

High-speed

11. Packing List

Net weight: 735g

1 3 x 1.5V AA batteries (not included if the transport is by air freight)

2 1 x Hall probe CYTP98B (CYTP98A or CYTP98A or CYTP98B)

3 2 x 0.9m USB Cable

4 1 x 5V DC Voltage adapter

12. Warranty

Measuring instrument: 12 months

Hall sensor/probe: no guarantee. However we offer you

Replacement for reduced price (10%

discount)

Please contact us for technical questions, repairing and replacement etc.

ChenYang Technologies GmbH & Co. KG

Markt Schwabener Str. 8

85464 Finsing, Germany

Tel. +49-(0)8121-2574100

Fax: +49-(0)8121-2574101

Email: [email protected]e

http://www.chenyang.de

Table of contents

Popular Measuring Instrument manuals by other brands

Suaoki

Suaoki D40 user manual

Elster

Elster BK-G1.6 operating instructions

Endress+Hauser

Endress+Hauser Deltabar FMD71 technical information

Duratool

Duratool D03128 manual

Vega

Vega VEGAPULS 65 Quick setup guide

Tonghui

Tonghui TH2618B Operation manual

Tenmars

Tenmars TM-801 user manual

MSR

MSR 145 user manual

TPS

TPS WP-82 manual

ELMETRON

ELMETRON CP-511 user manual

PCB Piezotronics

PCB Piezotronics 003C30 Installation and operating manual

Tenma

Tenma 72-10465 manual

Endress+Hauser

Endress+Hauser Proline Promag 50 Brief operating instructions

Siemens

Siemens SITRANS F Coriolis FCT030 Function manual

KLINGER

KLINGER CMF V Series instruction manual

EXFO

EXFO FTB-2 Notice

Keysight

Keysight M8290A Getting started guide

ADTEK

ADTEK MW-5 operating manual