INSPECT USA HR-3023SD Humidity Receiver Meter Instruction Manual

: August 31, 2024
: INSPECT USA

Table of Contents

HR-3023SD Humidity Receiver Meter
Specifications
Product Usage Instructions
Front Panel Description
Measuring Procedure
- FAQ
Q: What is the maximum size of the SD memory card supported by
Q: How do I set the clock time on the device?
- Read User Manual Online (PDF format)
- Download This Manual (PDF format)

HR-3023SD Humidity Receiver Meter

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Specifications

Circuit: Custom one-chip microprocessor LSI circuit
Display: TFT LCD size 2.4″
Measurement function: Humidity/Temp. meter, DEW, WET
Datalogger Sampling Time Setting range: 1, 2, 5, 10, 30, 60,
120, 300, 600, 1800, 3600 seconds
Memory Card: SD memory card 4 GB to 16 GB
Operating Temperature: 0 to 50°C
Operating Humidity: Less than 85% R.H.
Power Supply meter: Alkaline or heavy-duty DC 1.5V battery
(UM3, AA) x 6 PCs or DC 9V adapter input
Power Supply probe: Alkaline or heavy-duty DC 1.5V battery
(UM4, AAA) x 4 PCs
Weight: Meter – 232g / 0.51 LB, Probe – 93g / 0.204 LB
Dimension: Meter – 181 x 77 x 45 mm, Probe – 168 x 52 x 28
mm

Product Usage Instructions

Front Panel Description

The front panel of the Humidity Receiver Meter includes buttons
for power on/off, data logging, setting the clock time, setting
beep sound, adjusting sampling time, and other functions. The TFT
LCD display shows real-time humidity, dew point, wet bulb
temperature, and other relevant data.

Measuring Procedure

To measure humidity, dew point, and wet bulb temperature:

Ensure the device is powered on and the sensor probe is
correctly placed in the desired location.
Select the appropriate measurement function on the meter.
Adjust the sampling time according to your requirements.
Press the data logger button to save data at desired
intervals.
Retrieve data from the SD memory card for further analysis if
needed.

FAQ

Q: What is the maximum size of the SD memory card supported by

the device?

A: The device supports SD memory cards ranging from 4 GB to 16
GB.

Q: How do I set the clock time on the device?

A: To set the clock time, navigate to the clock setting option
on the front panel and adjust the year, month, date, hour, minute,
and second accordingly.

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SD Card real time data recorder Humidity/ Dew Point/ Wet Bulb Temperature. Wireless Sensor.
HUMIDITY RECEIVER METER
Model : HR-3023SD
OPERATION MANUAL

TABLE OF CONTENTS
1. FEATURES………………………………………………………………………………..1……………. 2. SPECIFICATIONS………………………………………………………………………2…………….. 3. FRONT PANEL DESCRIPTION……………………………………………………6…………….. 4. MEASURING PROCEDURE………………………………………………………..8……………..
4-1 Hygro-Thermometer measurment …………………………………………………..8……………… 4-2 Change the temperature unit ( , )………………………………………………9……………… 4-3 Data Hold……………………………………………………………………………………..9…………….. 4-4 Data Record ( Max./ Min. reading )………………………………………………….9………. 4-5 LCD brightness select…………………………………………………………………….1..0……………. 5. DATALOGGER…………………………………………………………………………..1..1…………… 5-1 Preparation before execute datalogger function…………………………………1..1.. 5-2 Auto Datalogger( Set sampling time 1 second )…………………………….1..2… 5-3 Manual Datalogger ( Set sampling time = 0 second )…………………………1..3…… 5-4 Check time & sampling time information…………………………………………..1..3……………. 5-5 SD Card Data structure………………………………………………………………….1…4…….. 6. Saving data from the SD card to the computer………………………………..1..5………… 7. ADVANCED SETTING…………………………………………………………………1..6………….. 7-1 SD memory card Format………………………………………………………..1..7………….. 7-2 Set clock time
( Year/Month/Date, Hour/Minute/ Second )………………………………..1..7….. 7-3 Set sampling time (Second )…………………………………………………..1..8………….. 7-4 Auto power OFF management………………………………………………..1..8……….. 7-5 Set beeper sound ON/OFF ……………………………………………………1..9…………. 7-6 Set SD card Decimal character……………………………………………….1..9……. 7-7 PROBE PATTING………………………………………………………………..2..0…. 7-8 Escape Setting……………………………………………………………………..2..0…………… 8. POWER SUPPLY from DC ADAPTER…………………………………………..2..0………….. 9. BATTERY REPLACEMENT………………………………………………………….2..1…….. 10. SYSTEM RESET………………………………………………………………………2..1………….. 11. RS232 PC serial interface………………………………………………………….2…2……….. 12. PATENT…………………………………………………………………………………..2..3………..

1. FEATURES

Meter and probe w/o wire connect. Humidity/Temp. meter, Humidity measurement can show %RH and Temp.,
Dew , Wet , Temp. Temp. display unit default to or . Meter can default auto power off or manual power off. Real time SD memory card Datalogger, it Built-in Clock
and Calendar, real time data recorder , sampling time set from 1 second to 3600 seconds. Manual datalogger is available ( set the sampling time to 0 ), during execute the manual datalogger function, it can set the different position ( location ) No. ( position 1 to position 99 ). Innovation and easy operation, computer is not need to setup extra software, after execute datalogger, just take away the SD card from the meter and plug in the SD card into the computer, it can down load the all the measured value with the time information ( year/month/date/ hour/minute/second ) to the Excel directly, then user can make the further data or graphic analysis by themselves. SD card capacity : 4 GB to 16 GB. * LCD with green light backlight, easy reading.
Can default auto power off or manual power off. Data hold, record max. and min. reading. Meter power by UM3/AA ( 1.5 V ) x 6 batteries or DC 9V adapter. Probe power by UM4/AAA ( 1.5 V ) x4 batteries and Support type c socket. RS232/USB PC COMPUTER interface. * Available for the HVAC applications.
1

2. SPECIFICATIONS

2-1 General Specifications

Circuit

Custom one-chip of microprocessor LSI

circuit.

Display

TFT LCD size : 2.4 ”

Measurement function

Humidity/Temp. meter,DEW ,WET

Datalogger Sampling Time Setting range
Memory Card Advanced setting

Auto

1, 2, 5, 10, 30, 60, 120, 300, 600,

1800, 3600 second
@ For anemometer measurement,
the sampling time setting value should be 2 seconds.

@ Sampling time can set to 1 second, but memory data may loss.

Manual Push the data logger button

once will save data one time.
@ Set the sampling time to
0 second.

@ Manual mode, can also select the 1 to 99 position ( Location ) no.

SD memory card. 4 GB to 16 GB.

Set clock time ( Year/Month/Date,

Hour/Minute/ Second )

Auto power OFF management
Set beep Sound ON/OFF
Set sampling time
Decimal point of SD card setting
SD memory card Format

2

Data Hold Memory Recall Sampling Time of Display Data Output
Operating Temperature Operating Humidity Power Supply meter Power Supply probe Power Current Meter
Power Current Probe
Weight Dimension
Accessories Included

Freeze the display reading. Maximum & Minimum value. Approx. 1 second.

RS 232/USB PC computer interface. Connect the optional RS232 cable
UPCB-02 will get the RS232 plug. Connect the optional USB cable
USB-01 will get the USB plug. 0 to 50 .

Less than 85% R.H.

Alkaline or heavy duty DC 1.5 V battery ( UM3, AA ) x 6 PCs, or DC 9V adapter input. ( AC/DC power adapter is optional ).
Alkaline or heavy duty DC 1.5 V battery (UM4, AAA) x 4 PCs * Support type c socket
Normal operation ( w/o SD card save data ) : Approx. DC 55mA. When SD card save the data : Approx. DC 80 mA.

Approx. DC 15 mA.

Meter : 232 g/ 0.51 LB. Probe : 93 g/0.204 LB

Meter

181 x 77 x 45 mm.

Probe 168 x 52 x 28 mm.

Instruction manual……………………………………..1…P..C……
RHP-01 Probe…………………………………………..1…P..C

3

Optional Accessories

SD Card ( 4 G ) Humidity Probe, RHS-221 AC to DC 9V adapter. USB cable, USB-01. RS232 cable, UPCB-02. Data Acquisition software,SW-U801-WIN. Hard carrying case ( CA-06 )

2-2 Electrical Specifications (23±5 )

Humidity/Temp. meter

A. Humidity Measuring Range Resolution Accuracy

0 % to 95 % R.H.

0.1 % R.H. 70% RH :

±(3% reading + 1% RH).

< 70% RH :

±3% RH.

B. Temperature Measuring Range Resolution Accuracy

0 to 50 /32 to 122 0.1 /0.1 ±0.8 /1.5

Dew Point ( Humidity )

Range

-25.3 to 48.9

Resolution

0.1

Range

-13.5 to 120.1 .

Remark :

Resolution

0.1 .

Dew Point display value is calculated from the

Humidity/Temp. measurement automatically.

The Dew Point accuracy is sum accuracy value of

Humidity & Temperature measurement..

4

Wet bulb ( Humidity )

Range

-21.6 to 50.0

Resolution

0.1

Range

-6.9 to 122.0 .

Remark :

Resolution

0.1 .

Wet bulb display value is calculated from the

Humidity/Temp. measurement automatically.

The Welt bulb accuracy is sum accuracy value of

Humidity & Temperature measurement..

5

3. FRONT PANEL DESCRIPTION
Fig. 1 6

3-1 Display 3-2 Power Button ( LCD Brightness adjustment ) 3-3 Hold Button 3-4 REC Button 3-5 Button (Unit Button ) 3-6 Button ( Function Button ) 3-7 TIME Button ( SET Button ) 3-8 ENTER ( LOG Button ) 3-9 SD card socket 3-10 Reset Button 3-11 RS-232 Output Terminal 3-12 DC 9V Power Adapter Input Socket 3-13 Battery Compartment/Cover 3-14 Battery Cover Screws 3-15 Stand 3-16 Meter Tripod Fix Nut 3-17 Humidity/Temp. sensor 3-18 Probe power indicator 3-19 Probe link indicator 3-20 Probe power Button 3-21 Probe batter cover screws 3-22 Probe batter cover 3-23 Probe Tripod Fix Nut 3-24 Probe power type c socket
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4. MEASURING PROCEDURE
4-1 Hygro-Thermometer measurment

Pressing the ” Power Button “( 3-2, Fig. 1 ) > 2 seconds Turn on the meter.

Pressing the ” Power Button ” ( 3-2, Fig. 1 ) continuously and > 2 seconds again will turn off the meter.

Turn on the humidity Probe by pressing the ” Power Button “(3-2, Fig.1) . Short press ” Power Button ” Turn on the humidity probe , the auto power off (about 10 minitu) function will enable. long press ” Power Button ” Turn on the humidity probe the auto power off function will disable
The meter screen will show waiting probe word and wait a morment the meter will show mesurement value.
Remark : when screen keep appearing “waiting probe” word ,Please check probe power ,or press meter” HOLD ” key > 2 second or press ” SET ” key > 2 second to do Around divice scan and divice pairing , wait a morment the screen will display the discovered devices, then select correct divice and press ” ENTER ” key , wait a morment the meter will link the divice and screen will show measure value.
Pressing the ” Function Button ” ( 3-6, Fig. 1 ) continuously ( not release the button ), the Display will show the following text in sequence :
(RH+Temp+DEW+WET)—> (RH+Temp)—>
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4-2 Change the temperature unit ( , )
How to change the Temperature unit, select to the Humidity and Temperature measurement function only,then press the “Unit Button ” ( 3-5 Fig.1) continuously,the unit will change from ” ” to ” ” sequence, until the desired unit is present on the Display release the ” Unit Button “, the select unit will save into the memory with default.
4-3 Data Hold
During the measurement, press the ” Hold Button ” ( 3-3, Fig. 1 ) once will hold the measured value & the LCD will display a ” HOLD ” symbol. Press the ” Hold Button ” once again will release the data hold function.
4-4 Data Record ( Max., Min. reading )

The data record function records the maximum and minimum readings. Press the ” REC Button ” ( 3-4, Fig.1 ) once to start the Data Record function and there will be a ” REC ” symbol on the display.
With the ” REC ” symbol on the display : a) Press the ” REC Button ” ( 3-4, Fig. 1 ) once, the ” REC MAX ” symbol along with the maximum value will appear on the display.
b) Press the ” REC Button ” ( 3-4, Fig. 1 ) again, the ” REC MIN ” symbol along with the minimum value will appear on the display.
c) To exit the memory record function, just press the ” REC ” button for > 2 seconds at least. The display will revert to the current reading.
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4-5 LCD brightness select Depending on the brightness of the environment, can use the “Backlight Button ” ( 3-2, Fig. 1 ) select from 3rd-order LCD Backlight brightness.
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5. DATALOGGER
5-1 Preparation before execute datalogger function
a. Insert the SD card Prepare a ” SD memory card ” ( 4 G to 16 G, optional ), insert the SD card into the ” SD card socket ” ( 3-9, Fig. 1). The front panel of the SD card should face against the down case.
b. SD card Format If SD card just the first time use into the meter, it recommend to make the ” SD card Format ” at first. , please refer chapter 7-1 ( page 17 ).
c. Time setting If the meter is used at first time, it should to adjust the clock time exactly, please refer chapter 7-2 ( page 17 ).
d. Decimal format setting The numerical data structure of SD card is default used the ” . ” as the decimal, for example “20.6” “1000.53” . But in certain countries ( Europe …) is used the ” , ” as the decimal point, for example ” 20, 6 ” “1000,53”. Under such situation, it should change the Decimal character at first, details of setting the Decimal point, refer to Chapter 7-6, page 19.
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5-2 Auto Datalogger ( Set sampling time 1 second )
a. Start the datalogger
Press the ” LoggerButton ( 3-8, Fig. 1 ) > 2 Sec. , the LCD will show the text ” LOGGER “, and flashing , at the same time the measuring data along the time information will be saved into the memory circuit. Remark : How to set the sampling time, refer to Chapter 7-3,
page 19. How to set the beeper sound is enable, refer to
Chapter 7-5, page 19.
b. Pause the datalogger
During execute the Datalogger function , if press the ” Logger Button ” ( 3-8, Fig. 1 ) once will pause the Datalogger function ( stop to save the measuring data into the memory circuit temporally ). In the same time the text of ” LOGGER ” will stop flashing. Remark : If press the ” Logger Button ” ( 3-8, Fig. 1 ) once again will execute the Datalogger again, the text of ” LOGGER ” will flashing .
c. Finish the Datalogger
During pause the Datalogger, press the ” Logger Button ” ( 3-8, Fig. 1) continuously at least two seconds, the ” Logger ” indication will be disappeared and finish the Datalogger.
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5-3 Manual Datalogger ( Set sampling time = 0 second )
a. Set sampling time is to 0 second
Press the ” Logger Button ( 3-8, Fig. 1 ) >2 Sec. , the LCD will show the text ” Logger “, then press the ” Logger Button ” ( 3-8, Fig. 1 ) once, the ” LOGGER ” will flashing once and Beeper will sound once, at the same time the measuring data along the time information will be saved into the memory circuit. The lower Display will show the Position ( Location ) no. and saved into the SD card too.
Remark : During execute the Manual Datalogger, It can use the ” Button ” ( 3-5, Fig. 1) or ” Button ” ( 3-6, Fig. 1 ) to set the measuring position (1 to 99, for example room 1 to room 99 ) to identify the measurement location , the lower Display will show P x ( x = 1 to 99 ).
b. Finish the Datalogger
Press the ” Logger Button ” ( 3-8, Fig. 1) continuously at least two seconds, the ” Logger ” indication will be disappeared and finish the Datalogger.
5-4 Check time & Sample information & connected probe number
During the normal measurement ( not execute the Datalogger ), short press ” Time Button ” ( 3-7, Fig. 1 ) once , the TFT LCD display will present the time information of Year, Month/Date, Hour/Minute & Sampling time & connected probe number information .
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5-5 SD Card Data structure

WWhheenn tthee SfirDstctaimrde,isthuesSedDicnatordthies museetedr,intthoethSeDmcaertedr, the SD card will generate a folder :
HRA01
If the first time to execute the Datalogger, under the route HRA01, will generate a new file name HRA01001.XLS. After exist the Datalogger, then execute again, the data will save to the HRA01001.XLS until Data row reach to 30,000 rows, then will generate a new file, for example HRA01002.XLS
Under the folder HRA01, if the total files more than 99 files, will generate a new route, such as HRA02 ……..
The file’s route structure : HRA01 HRA01001.XLS HRA01002.XLS ………………… HRA01099.XLS HRA02 HRA02001.XLS HRA02002.XLS ………………… HRA02099.XLS HRAXX …………………
Remark : XX : Max. value is 10.
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6. Saving data from the SD card to the computer ( EXCEL software )

After execute the Data Logger function, take away the SD card out from the ” SD card socket ” ( 3-9, Fig. 1 ).
Plug in the SD card into the Computer’s SD card slot ( if your computer build in this installation ) or insert the SD card into the ” SD card adapter “. then connect the ” SD card adapter ” into the computer.
Power ON the computer and run the ” EXCEL software “. Down load the saving data file ( for example the file name : HRA01001.XLS, HRA01002.XLS ) from the SD card to the computer. The saving data will present into the EXCEL software screen ( for example as following EXCEL data screens ) , then user can use those EXCEL data to make the further Data or Graphic analysis usefully.
EXCEL data screen ( for example )
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EXCEL graphic screen ( for example )

7. ADVANCED SETTING

Under do not execute the Datalogger function, press the ” SET Button ” ( 3-7, Fig. 1 ) continuously at least two seconds will enter the ” Advanced Setting ” mode. then press the ” (3-5, Fig. 1 )” or ” (3-6, Fig. 1 ) “key ,to select will chang setting mode (text will turn yellow color),in sequence to select the eight main function, as follows:

SD FORMAT CLOCK TIME
SAMPLE TIME AUTO POWER OFF BEEPER SOUND DECIMAL POINT PROBE PARRING ESCAE SETTING

SD memory card Format Set clock time ( Year/Month/Date, Hour/ Minute/Second ) Set sampling time (Second ) Auto power OFF management Set beeper sound ON/OFF Set SD card Decimal character Select correct device to do parring Escape setting function

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Remark : During execute the ” Advanced Setting ” function,if press ” Power Button ” ( 3-2, Fig. 1 ) once will exit the ” Advanced Setting ” function, the LCD will return to normal screen.
7-1 SD memory card Format

Use the ” Button ” ( 3-5, Fig. 1 ) or ” Button ” ( 3-6, Fig. 1 ) select to ” SD CARD FORMAT ” position then press ” ENTER ” key.
Use the ” Button ” ( 3-5, Fig. 1 ) or ” Button ” ( 3-6, Fig. 1 ) to select the display text to ” YES ” or ” NO “.
YES – Intend to format the SD memory card NO – Not execute the SD memory card format
If select the upper to ” yES “, press the ” Enter Button ” ( 3-8, Fig. 1 ) once again, the Display will show text ” SURE ” to confirm again, if make sure to do the SD memory card format, then press ” Enter Button ” once will format the SD memory clear all the existing data that already saving into the SD card.
7-2 Set clock time ( Year/Month/Date,Hour/Minute/ Second )
Use the ” Button ” ( 3-5, Fig. 1 ) or ” Button ” ( 3-6, Fig. 1 ) select to ” CLOCK DATA TIME ” position then press ” ENTER ” key.
Press the ” Enter Button ” ( 3-8, Fig. 1 ) once, Use the ” Button ” ( 3-5, Fig. 1 ) or ” Button ” ( 3-6, Fig. 1 ) to adjust the value ( Setting start from Year value ). After the desired value is set, press the ” Time Button ” ( 3-7, Fig. 1 ) once will going to next value adjustment ( for example, first setting value is Year then next to adjust Month, Date, Hour,Minute, Second value ).
After set all the time value ( Year, Month, Date, Hour, Minute, Second ), press the ” ENTER Button ” ( 3-8, Fig. 1 ) once ,will save and Back to ” Advanced Setting screen “.
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Remark : After the time value is setting, the internal clock will run precisely even Power off if the battery is under normal condition ( No low battery power ).
7- 3 Set sampling time ( SecondS )

Use the ” Button ” ( 3-5, Fig. 1 ) or ” Button ” ( 3-6, Fig. 1 ) select to ” SAMPLI TIME ” position then press ” ENTER ” key.
Use the ” Button ” ( 3-5, Fig. 1 ) or ” Button ” ( 3-6, Fig. 1 ) to adjust the value ( 1, 2, 5, 10, 30,60, 120, 300, 600, 1800,3600 seconds ).
After the Sampling value is selected, press the ” Enter Button ” ( 3-8, Fig. 1 ) will save the setting function with default and Back to ” Advanced Setting screen “.
7-4 Auto power OFF
Use the ” Button ” ( 3-5, Fig. 1 ) or ” Button ” ( 3-6, Fig. 1 ) select to ” AUTO POWER OFF ” position then press ” ENTER ” key.
Use the ” Button ” ( 3-5, Fig. 1 ) or ” Button ” ( 3-6, Fig. 1 ) to select the display text to ” YES ” or ” NO “.
YES – Auto Power Off management will enable. NO – Auto Power Off management will disable.
After select the upper text to ” YES ” or ” NO “, press the ” Enter Button ” ( 3-8, Fig. 1 ) will save the setting function with default and Back to ” Advanced Setting screen “.
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7- 5 Set beeper sound ON/OFF

Use the ” Button ” ( 3-5, Fig. 1 ) or ” Button ” ( 3-6, Fig. 1 ) select to ” BEEPER SOUND ” position then press ” ENTER ” key.
Use the ” Button ” ( 3-5, Fig. 1 ) or ” Button ” ( 3-6, Fig. 1 ) to select the display text to ” YES ” or ” NO “. YES – Meter’s beep sound will be ON with default. NO – Meter’s beep sound will be OFF with default. is power ON.
After select the upper text to ” YES ” or ” NO “, press the ” Enter Button ” ( 3-8, Fig. 1 ) will save the setting function with default and Back to ” Advanced Setting screen “.
7- 6 Decimal point of SD card setting
The numerical data structure of SD card is default used the ” . ” as the decimal, for example “20.6” “1000.53” . But in certain countries ( Europe …) is used the ” , ” as the decimal point, for example ” 20,6 ” “1000,53”. Under such situation, it should change the Decimal character at first.
Use the ” Button ” ( 3-5, Fig. 1 ) or ” Button ” ( 3-6, Fig. 1 ) select to “DICIMAL CHARAGTER” position then press ” ENTER ” key.
Use the ” Button ” ( 3-5, Fig. 1 ) or ” Button ” ( 3-6, Fig. 1 ) to select the display text to ” USA ” or ” EURO “.
USA – Use ” . ” as the Decimal point with default. EURO – Use ” , ” as the Decimal point with default.
After select the upper text to ” USA ” or ” EURO “, press the ” Enter Button ” ( 3-8, Fig. 1 ) will save the setting function with default and Back to ” Advanced Setting screen “.
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7-7 Select the PROBE PATTING 1) Use the ” Button ” ( 3-5, Fig. 1 ) or ” Button ”
( 3-6, Fig. 1 ) select to ” PROBE PATTING ” position then press ” ENTER ” key. 2) Use the ” Button ” ( 3-5, Fig. 1 ) or ” Button ” ( 3-6, Fig. 1 ) select to correct device then press ” ENTER ” key to do parring. 3) wait morment lcd screen will show probe measurement value. 7-8 Escape Setting 1) Use the ” Button ” ( 3-5, Fig. 1 ) or ” Button ” ( 3-6, Fig. 1 ) select to ” ESACAPE SETTING ” position then press ” ENTER ” key. 2) Use the ” Button ” ( 3-5, Fig. 1 ) or ” Button ” ( 3-6, Fig. 1 ) Select to escape Setting station, then press ” ENTER ” key meter will escape setting function. back to measurement function.
8. POWER SUPPLY from DC ADAPTER
The meter also can supply the power supply from the DC 9V Power Adapter ( optional ). Insert the plug of Power Adapter into ” DC 9V Power Adapter Input Socket ” ( 3-12, Fig. 1 ).
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9. BATTERY REPLACEMENT

Main meter :

When the left corner of LCD display show ”

“, it

is necessary to replace the battery. However, in-spec.

measurement may still be made for several hours after

low battery indicator appears before the instrument

become inaccurate.

Loose the screws of the ” Battery Cover ” ( 3-14, Fig. 1 )

and take away the ” Battery Cover ” from the instrument

and remove the battery.

Replace with DC 1.5 V battery ( UM3, AA,

Alkaline/heavy duty ) x 6 PCs, and reinstate the cover.

Make sure the battery cover is secured after changing

the battery.

Probe : 1) When the probe power indicator appears flicker, express low
battery it is necessary to replace the battery. 2) Loose the screws of the ” Battery Cover ” ( 3-20, Fig. 1 )
and take away the ” Battery Cover ” from the instrument and remove the battery. 3) Replace with DC 1.5 V battery ( UM4, AAA, Alkaline/heavy duty ) x 4 PCs, and reinstate the cover. 4) Make sure the battery cover is secured after changing the battery.
10. SYSTEM RESET
If the meter happen the troubles such as : CPU system is hold ( for example, the key button can not be operated… ).

Then make the system RESET will fix the problem. The system RESET procedures will be either following method :
During the power on, use a pin to press the ” Reset Button ” ( 3-10, Fig. 1 ) once a while will reset the circuit system.

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11. RS232 PC SERIAL INTERFACE
The instrument has RS232 PC serial interface via a 3.5 mm terminal ( 3-11, Fig. 1 ).
The data output is a 16 digit stream which can be utilized for user’s specific application.
A RS232 lead with the following connection will be required to link the instrument with the PC serial port.

Meter

PC (9W ‘D” Connector)

Center Pin…………………………………….P. in 4 (3.5 mm jack plug) Ground/shield…………………………………..P..in 2
Pin 5

2.2 K resistor

The 16 digits data stream will be displayed in the following format :
D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0

Each digit indicates the following status :

D0

End Word (0D)

D1 & D8

Display reading, D1 = LSD, D8 = MSD

For example :

If the display reading is 1234, then D8 to