R280 Handheld Xγ Environmental Dose Rate Radiometer User Manual

Display interval setting................................................ ...............................................20

Alarm setting............................................... .................................................. ....20

Save online measurement data.............................................. .......................................twenty one

Reading radiometers to store data................................................ ........................................twenty two

Save the radiometer to store data.......................................... ....................................twenty four

Erase radiometer data............................................. ............................................25

Option Description................................................ .................................................. ...26

V. Technical parameters ................................................ .................................................. 30

Sixth, warranty ............................................... .................................................. .......32

7. Appendix ............................................ .................................................. .......33

Unit conversion formula............................................... ..............................................33

The meaning of sievert: ............................................ ............................................35

Correction factor calculation method.............................................. .......................................36

II I. Introduction

I. Introduction

Congratulations on using the R280 Series Multi-Function Digital Radiometer, which is based entirely on new standards, based on previous products, improved performance, easier operation, and excellent functional options:

The product has a dose accumulating count Sv, maximum value retention, manual storage, instant messaging with the computer, data analysis and other functions

1. Use the raised button: you can start working with just a click of the button, and you can get rich measurement data right away.

2. Strictly tested precision instruments: Each R280 series of multi-function digital radiometers are monitored and tested by the German Society for Nuclear Radiation Protection.

3. Can measure a variety of nuclear radiation: not only can measure γ, but also can measure β and Χ ray

4. R280 series multi-function digital nuclear radiometer adds power switch button to maximize battery life.

5. Ultra-low power consumption: The meter itself consumes a small amount of power, and with a 9V battery, the customer can easily replace it.

6. Large screen display: all values ​​and citation directory entries not found. Settings can be displayed on a large screen.

7. Data Storage: The R280 Multi-Function Digital Radiometer itself has a large amount of memory that can store data directly into the meter and then transfer it to the computer. No manual recording is required. And support to store data for 1 minute after power failure

8. Data can be analyzed by computer: The included Radiation Scanner software can display the real-time data of the radiometer in the computer, realize remote monitoring, analyze the measured data, and store data at any time interval.

9. Portable design: Because the meter is very compact and easy to carry, it can be put into your pocket.

10. Validation: The R280 series of multi-function digital radiometers are tested by German TUV safety equipment and comply with all European CE standards and US FCC 15 standards. You can carry a radiometer while on the air and monitor the cosmic radiation on the plane.

11. R280 has the functions of over-limit alarm, storage, maximum value recording, and instant messaging display with computer.

Function, users do not have to worry about data loss after battery replacement.

II Second, the panel

Second, the panel

R280 type radiometer panel:

Third, the operating instructions

Indicates the current radiation dose rate:  

Press the key to enter the standard mode. It displays the current measured value and is represented by the μSv/h unit by default. The R280 series of multi-function digital radiometers can be displayed not only by numerical values, but also by curved bar graphs. The bar graph at the bottom of the screen changes with the displayed value. The bar graph has scales of 0.1, 1, 10, 100, which are exponentially distributed. Note: If the measured value is small, the bar graph is displayed as a line.

Sv/h , Rem/h , CPS , CPM display unit conversion  

Press the button to display the unit to switch between μSv/h, average value over the past 24 hours, CPS, CPM and mR/h. The conversion formula for the unit is as follows:

10μSv/h=1mRem/h

Dose count up  

The R280 Series Multi-Function Digital Radiometer can also be used as a dosimeter to record the cumulative radiation dose over time in the current environment. The initial unit is μSv, which is automatically converted to mSv or Sv record display when the dose reaches a certain value.

Dose count up button

II Third, the operating instructions

Press the button once to enter the dose count mode, then the dose icon (μSv) is displayed on the screen and flashes. Press the button again, the dose accumulation count measurement ends, and the indication icon stops flashing, and the dose value currently accumulated has been displayed on the screen.

Or press the button for 2 seconds to enter the set measurement time. The dose icon (μSv) and the time unit “min” icon are displayed on the screen. At this time, there are three digits displayed in the display. The default state is 060, which means 60 minutes, and the maximum count is 999 minutes. At this time, adjust the time you want by operating the up () or down button (). When you press and hold the up or down button for 2 seconds, the value will increase or decrease rapidly. After setting the time, press the Enter key (), the time setting is completed, and stop flashing. Press the Enter key again to start the timer dose accumulation operation state, and the dose accumulation work status flag: “Sv” is displayed in the display. At the same time, the "TIME" flag starts to flash, indicating that the current measurement is working. If the measurement time is set, the meter buzzer will sound a short beep at the end of the measurement. At this time, the cumulative dose value for this time period is displayed, and “TIME” is displayed on the current interface and stops flashing. If the key is pressed shortly before the time has elapsed, it will enter the non-timed accumulation or recording state; if it is long pressed, it will re-enter the timing setting state.

The measurement can be stopped in the following three ways.

- In the case of non-timed measurement, the second short button, the accumulated measurement ends, and the measurement result is displayed on the screen; during the timing measurement, short press the button to enter the irregular accumulation state.

- Long button, enter the timing setting, and set the timing time to 000. After confirmation, the measurement result disappears and the default dose rate test state is entered.

- Select other operating modes and the measurement results disappear.

Pulse count  

The R280 series multi-function digital radiometer can also be used as a normal Geiger counter. Under this setting, it only records the received pulse, only pulse measurement, not converted to Sv (dose equivalent unit, 1Sv=100Rem ). The multi-function digital radiometer displays the cumulative amount of pulses received into the LCD.

Pulse count button

Press the button once to enter the pulse count mode, and then the pulse icon is displayed on the screen. And flashes. Press the button again, the dose accumulation count measurement ends, and the indicator icon stops flashing, and the screen shows the dose value that has been accumulated.

Or press the button for 2 seconds to enter the set measurement time, and the pulse icon is displayed on the screen. At this time, there are three digits displayed in the display. The default state is 060, which means 60 minutes, and the maximum count is 999 minutes.

The time setting method is the same as the previous dose accumulation operation.

If the measurement time is set, the meter buzzer will sound a short beep at the end of the measurement. At this time, the accumulated count value of this time period is displayed, and “TIME” is displayed on the current interface and stops flashing.

Also, the measurement can be stopped in the following three ways.

- In the case of non-timed measurement, the second short button, the accumulated measurement ends, the measurement result is displayed on the screen; during the timing measurement, short press the button to enter the irregular time

II Third, the operating instructions

Add status.

- Long button, enter the timing setting, and set the timing time to 000. After confirmation, the measurement result disappears and the default dose rate test state is entered.

- Select other operating modes and the measurement results disappear.

Menu Settings  

Press the button to enter the menu setting interface. You can set the time (TIME), date (DATA), correction factor (CAL), alarm threshold (ALM), average time setting ( T ), pulse sound ().

Time format: hour/minute/second

Date format: month / day / year

Correction factor: The factory default calibration factor of the instrument is 2.10. (Note: The calibration source of the R280 radiometer is based on the Co60 source, and the correction factor is 2.1. If the Cs-137 source is used, the difference will be caused by the difference in the pulse amplitudes of the two types of nuclides through the GM tube. Differently, the correction factor must be re-corrected. It is recommended that the correction factor experience value be 1.4.) For all operations, modify the value by pressing the up () or down button () and confirm by pressing the Enter key.

The correction factor (CAL) cannot be modified at will, otherwise the measurement data will be inaccurate. If it is really necessary to modify, the instrument must be regularly calibrated by a professional nuclear protection staff and the current correction factor calculated to be modified. You must enter the password when you modify it. First enter the correction factor interface: the “CAL” mark flashes, the word “----” is displayed in the middle of the display. After the carriage return is confirmed, the first “-” flashes and then enters the first one. - "become "c", the second "-" flashes, then enter the keys on the keyboard in sequence:, the display shows "ccc-", while "-" flashes, then enter the button, the display will show the current The correction factor (such as 2.10), and flashes, you can modify the value as you did before. When the correction factor increases, the calculated radiation value is reduced. When the correction factor is reduced, the calculated radiation value is increased.

Alarm threshold: 1-99μSv/h, default is 10 (only R280 models have alarm function)

Average time: This setting can change the processing response time of the meter to the radioactive source, setting the range from 8s to 60s. As the radiation dose rate increases, the average time is automatically scaled according to the current average time set. When set to 8s, the fastest reaction time can reach 2s when the radiation intensity is greater than 5μSv/h. The factory default time of the instrument is 60s

Pulse sound: ON and OFF two state selection

II Third, the operating instructions

data storage   

Once the button is pressed, the meter stores the current measured dose rate value into the instrument's memory (manual single storage, while recording time and radiance values).

Press and hold the button for 2 seconds to enter the settings for timing storage. And the “MEM” icon is displayed on the screen. At this time, there are three digits displayed in the display. The default state is 001 (meaning that it is automatically stored once every 1 minute, and the maximum interval can be set to 999 minutes). The time setting operation is as described above. Press the Enter key to start the timer dose accumulation operation state, and the display shows the storage working status flag - "MEM", and the "TIME" flag starts to flash, indicating that the current measurement is working.

If the measurement time is set, the meter buzzer will sound a short beep at the end of the measurement. At this time, the maximum dose rate value for this time period is displayed, and “TIME” is displayed on the current interface and stops flashing. During the timed storage process, it is still possible to manually store a certain value currently seen in a single operation. If you press and hold, it will re-enter the timing setting state.

The automatic storage function can be stopped as follows.

- Press the 2s long button to enter the timing setting and set the timing to 000.

- Select the operating mode other than the dose rate to stop the automatic storage function.

Note: If the internal memory data space is full, “F-OU” will be displayed on the display with the “MEM” mark flashing. It can be connected with the host computer. After downloading the data in the memory, the data in the current memory area can be cleared by the erasing operation of the host computer, and then the storage can be continued.

data transmission  

(Note: The simplified version of the R280 radiometer does not have this feature)

This type of radiometer adopts the plug-and-play USB communication mode. After connecting the instrument, it can directly perform various operations through the host computer, without having to operate the meter itself.

In the USB communication state, “----” will be displayed on the display. If you need to see the current measurement data from the instrument at this time, press the button to display the current dose rate. It is recommended to disconnect the connection after the host computer normally interrupts. Disconnect the physical connection.

Power on / off  

Press 2s for a long time, turn it on or off.

Every time you shut down normally, after you turn it on again, the data stored in the memory will still exist. When the power is turned off abnormally, there is no guarantee that the stored data will still be retained.

Power indicator  

The R280 series radiometer power supply is powered by a 9V battery. You can choose either an alkaline battery or a rechargeable battery.

There is a power voltage detection function inside the meter. When the battery is low, the battery indicator on the display will flash. It is recommended to replace the battery when the battery indicator is flashing. When the battery is changed, the memory data can be kept for one minute. When the power is seriously insufficient, the meter will automatically shut down and the stored data will be lost.

II IV. Radiation Scanner Software

Fourth, Radiation Scanner software

Data from the radiometer can be read out to a computer and converted to imaged data for further data processing using the "R280 Radiometer" and the Radiation Scanner computer software. In addition, the Radiation Scanner computer software can remotely transmit the measured values ​​of the radiometer to the computer for display and analysis.

USB cable connecting the radiometer to the computer

Computer and radiometer connection diagram

The R280 radiometer is connected to a computer via a dedicated USB cable for easy remote monitoring and storage. This feature provides the best solution for situations where the field radiation is large and has to be monitored at any time.

Dedicated USB cable length: Generally, a 1 meter long cable is provided, and a 5 meter long cable can be provided if necessary. It can be extended up to 100 meters with a USB extender.

System Requirements  

1, CD-ROM or DVD-ROM is mainly used to install software

2, WIN 2000, WIN XP, WIN VISTA

Software Installation  

1. Open the Chinese version of the CD and enter the Radiation Scanner to run.

Click the "Install" button to start the installation, and then follow the prompts, the installer is released by default to the "c:\SiLabs\MCU_3" folder. After the release is complete, select the "Launch the CP210X VCP Driver Installer" option, and then click the "FINISH" option, the following menu pops up:

II IV. Radiation Scanner Software

Click "Install" to continue the installation. If this menu does not pop up, go to the "c:\SiLabs\MCU_3" folder and find CP210xVCPInstaller.exe. Double-click to run this program.

2. Operation: After the installation is complete, you can find the Radiation Scanner item under “Start → Program → coliy” and click to start the software. You can also launch the software by clicking on the desktop shortcut.

3. Software Uninstall: Click “Start → Program → coliy → Uninstall Radiation” and follow the prompts to remove the software from the computer.

Radiometer software installation failure solution  

The software and driver installation is complete, but the online failure can be checked as follows:

1. Press the "USB" button of the radiometer, if not, press this button.

2, open the system properties (specific method is: right click on "My Computer" click on "Properties"), enter the "Device Manager" check whether the port column is normal, if not normal, then display a yellow triangle (the middle one Exclamation point). Need more at this time

The new driver, the specific method is: find the "SiLabs" folder in the system installation disk (usually C drive), open the "C:\SiLabs\MCU\CP210x\Windows_2K_XP_S2K3_Vista" folder, run the "CP210xVCPInstaller" file, you can automatically Update the driver and do not run other applications during the update process. After the update is completed, check whether the yellow triangle disappears in the port of the Device Manager. If it disappears, the port is normal. Otherwise, you need to repeat the above operation.

Connecting radiometer  

Step 1: Connect the radiometer to the computer with a USB cable.

Step 2: Auto Connect: Click on the menu “Operation → Auto Online” or click the Auto Online icon on the toolbar to automatically connect the radiometer.

Online success: Manually set online or automatic online, the system will give a prompt after successful online.

Automatic online icon on the toolbar, click this icon

II IV. Radiation Scanner Software

Online failure: Manually set online or automatic online, the system will give a prompt after the online failure.

The reasons for the online failure are many different from the two suggested above. Here are a few more references:

1. The driver is not installed completely and can be done by updating the driver.

2. The USB cable is faulty.

If the above problems do not exist, you can close the software and start again. Try it several times. Generally, the connection can be successful.

Online measurement  

After the connection is successful, online measurements can be made. Click the menu "Operation → Online Measurement" shortcut CtrlT or click the "Online Measurement" icon on the toolbar.

If you need to pause, click the menu "Operation → Pause Measurement" or click the toolbar to pause the measurement icon, the system enters the pause online measurement state.

Online measurement main interface:

Online measurement icon on the toolbar, click this icon

The Y-axis is the dose rate scale value and is automatically adjusted; the X-axis is the amount of data measured. Up to 20 current measurement data can be displayed in the display area.

If you want to see the previous data, click the "current trend map" icon on the toolbar. In this trend graph you can see all the data information for a continuous (no disconnection or pause in the middle) test. Drag the scroll bar to view test information for all test data.

II IV. Radiation Scanner Software

In the current trend graph, only the trend graph of the current measurement data can be seen. If you want to view the previous trend graph, you can use the historical trend graph. The method is to click on the "Historical Trend Graph" icon on the toolbar to open a trend graph of all previously measured data. A trend graph of all historical measurement data that has not been deleted can be viewed in the historical trend graph.

After clicking the icon, select “Acquisition Date” and then “Acquisition Time”, the starting time point of all collected data on this day will be displayed in the collection time. If there is no collected data on the selected date, “No Data” will be displayed, and “No Data” will be displayed on the main interface of the displayed trend graph. Drag the scroll bar to view test information for all test data.

Display interval setting  

Click the menu "Settings → Display interval setting..." or click the toolbar display interval setting icon to open the display interval setting interface.

Click to change the interval value. The interval value ranges from 2 to 60 seconds. The default is 2 seconds. Setting the display interval value is still valid when the software is started again.

The display interval is the interval between data collected each time during online measurement.

Alarm setting  

Click the menu "Settings → Alarm Settings..." or click the alarm setting icon on the toolbar to open the alarm setting interface.

II IV. Radiation Scanner Software

When “Alarm” is selected, the alarm is turned on, and “Alarm Threshold” can be set at this time. The alarm is off by default and the alarm threshold defaults to 5μSv/h. The alarm value setting range is 1 to 1000 μSv/h in increments of 1 μSv/h.

After the alarm setting is turned on, the alarm will start when the collected dose rate value exceeds the set alarm threshold. The way to alarm is to record the overdose dose rate value and time, and display it on the left side of the software, and sound an alarm tone. The alarm log can display up to 255 alarm values ​​at the same time. If it exceeds, the previous alarm value is deleted.

Save online measurement data  

The data collected by the online measurement can be saved as an EXCEL format file or a TEXT text file for further analysis by the tester.

Click the menu "File → Save Online Data..." or click the toolbar to save the online data icon to pop up the Save Data dialog box.

The function is to save the current continuously collected data to a file. Supported file types are Excel file (.xls) and Text file (.txt).

Reading radiometer to store data  

After the connection is successful, click on the menu "Operation → Read radiometer to store data" or click the toolbar icon to start reading the radiometer to store data. If the system is in the online measurement state, a prompt will be given:

Click the button "Yes ( Y )" to start reading the radiometer to store data, click "No ( N )"

Default save file name

Default save file type

II IV. Radiation Scanner Software

Discard the reading radiometer to store data. If the system is not in the online measurement state, it will go directly to the reading radiometer storage data state.

Wait a while during the reading process. This time is related to the amount of data stored in the radiometer. The more data is stored, the more time it takes. In this process, the software will be inoperable, which is caused by software delay, not a crash.

The top shows “single data collection” and the bottom is “automatic data collection”. If the stored data in the radiometer has only one type of "single acquisition data" or "automatic data collection", only information of one type of data is displayed on the interface without displaying the other.

Each yellow solid represents a data point collected at a time, and there is detailed information of the data point above it: acquisition date, acquisition time, and dose rate information. Drag the scroll bar to see all the data.

Save the radiometer to store data  

The stored data in the radiometer can be saved to the Excel file or the Text file for the user to analyze the data.

Click the menu "File → Save Radiometer to store data..." or the toolbar to save the radiometer storage data icon to pop up the save dialog. This function saves all the data in the read radiometer to a file. If you only want to save one of the data, you can click the menu "File → Save radiometer to store data once..." or "File → Save radiometer to automatically store data...", the storage method is the same as above, no Let me repeat.

If the stored radiometer storage data is not saved, a prompt will be given when exiting the software, asking if you want to save the radiometer to store data. If you click “Yes ( Y )”, the data will be saved, save as above, and select “No”. N )", give up saving and exit the program.

II IV. Radiation Scanner Software

Erase radiometer data  

The storage space in the radiometer is limited, and the stored data needs to be deleted to store the new stored data. The stored data in the radiometer will not be restored after it has been erased, so this operation should be done with caution.

Click the menu "Operation → Erase radiometer to store data" or the toolbar erase radiometer to store data icon, the system will pop up a prompt box asking if you want to erase the radiometer data.

Click the button "Yes ( Y )" to erase the data stored in the radiometer, and click "No ( N )" to erase. After the erase is successful, the prompt “Storage Data Erase Complete!” will be given.

Option description  

Click the menu "Settings → Options..." to open the Options Configuration sub-interface. There are three setup modules in the options: save settings, data management, online settings.

1, save settings

The manual save mode is to give a prompt to ask if you need to save the online measurement data when the software is closed; the automatic save mode is to automatically save the online measurement data when the software is closed.

When the radio button "Auto Save" is clicked, a dialog box prompts you to select the folder to be automatically saved:

II IV. Radiation Scanner Software

Clicking the "OK" software will record the selected folder for automatically saving data, and "Cancel" will be considered as abandoning the option to automatically save. This set file directory is also the default file directory for other data to save.

Default file type: The default save file type provided when saving data. The system defaults to Excel file. You can change the saved file type by selecting the file type when saving data. The data will be saved to the set file type in the auto save mode.

2, data management

The date of collection will display all the dates with recorded data. After clicking the date to be viewed, the start time of all collected data in the date will be displayed in the collection time column, and the detailed information of the information collected at that time will be displayed in the collection information column: initial acquisition time, termination acquisition time, and collected. The maximum and minimum values ​​in the data, the amount of data.

Click the collection time to save the collected data, the “Save” button is available, click the “Save” button to pop up the save dialog box, and the save method is consistent with the above save.

Click the collection time of the data you want to delete, and then click the "Delete" button to pop up the deletion confirmation.

"OK" deletes the data, and "Cancel" discards the deleted data.

The function of cleaning is to free up the disk space. The data collected by the online measurement is saved on the disk. After deleting the collected data, the occupied disk space is not completely released. This requires manually releasing the space by clicking the "Clean" button. . After clicking the "Clean" button, the software starts to automatically clean up and free up disk space, and the cleanup completes the popup completion message:

3, online settings

The online setting refers to the operation after the radiometer is successfully connected. There are three operation options:

No operation: no operation after online success, waiting for the user's operation.

Start online measurement: After online success, start online measurement immediately.

Read the stored data: After the connection is successful, immediately start reading the data stored in the radiometer.

II quad, Radiation Scanner Software Page29

Five, technical parameters

II V. Technical parameters Page31

Sixth, warranty

Germany Kelei Technology Co., Ltd. guarantees that every instrument it manufactures is free from defects in materials and workmanship.

All products are warranted for one year after shipment to the original consumer.

Germany Kelei Technology Co., Ltd. reserves the right to change the design at any time.

This Chinese manual is translated and provided by German Kelei Technology Co., Ltd.

II VII, appendix

Seven, appendix

Unit conversion formula  

UNITS OF RADIATION MEASUREMENT

The curie is the number of particles per second from 1 gram of Radium = 3.7 x 10 E10 counts/second = 37 billion cps = 37 billion Becquerel.

1 Becquerel (Bq) = 1 count per second = 1 event per second

1 microcurie = 1 uCi = 37,000 Bq = 37,000 cps.

1 microcurie = 2.22 x 10E6 disintegrations / minute = 2,220,000 cpm.

1 nanocurie = 1 billionth of a curie = 2,220 disintegrations / minute.

1 picocurie = 2.2 disintegrations / min.

Dosage units:

Gray (Gy) = 1 Joule/kg

Sievert (Sv) = Gray x QF, where QF is a "quality factor" based on the type

Of particle. The Sievert is a measure of biological effect.

QF for electrons, positrons, and xrays = 1 QF = 3 to 10 for neutrons,

Protons dependent upon the energy transferred by these heavier particles.

QF = 20 for alpha particles and fission fragments.

Converting older units:

1 rad = 1 centigray = 10 milligrays ( 1 rad = 1cGy = 10 mGy )

1 rem = 1 centisievert = 10 millisieverts ( 1 rem = 1cSv = 10 mSv )

1 mrad = 10 μGy

Nominal background radiation absorbed dose of 100 mrad/year = 1 mGy/yr.

Nominal background radiation dose biological equivalent of 1mrem/year = 10μSv/yr.

Occupational whole body limit is 5 rem/yr = 50 μsv/yr. (Recently proposed that levels be reduced to 2 rem/yr.)

2.5 mrem/hr or 25 μSv/hr is maximum average working level in industry.

Exposure rate from Naturally Occurring Radioactive Material (NORM) ; an

Empirically derived conversion factor for Ra-226 decay series: 1.82 microR/hour = 1 picoCurie/gram.

mR/h=10μSv/h

mR=10μSv

II VII, appendix

The meaning of sievert :  

In physics, we already know three kinds of rays α, β, γ (the X-rays belong to the low-energy γ-ray range), which not only have different physical properties, but also have different effects on the human body. In order for the three rays to be compared when applied to the human body, a value is established which is based on the effect of the radiation on the organism.

Sietert Sivert ( symbol Sv, dose equivalent unit , 1 Sv = 100 rem)

rem (roentgen equivalent man) rem, roentgen equivalent body

Correction factor calculation method  

Suppose three data points are calibrated: 7.5uSv/h, 75uSv/h, 750uSv/h. The real-time data samples measured at these three dose rate measurement points are as follows (the instrument's correction factor S0):

7.5uSv/h:

75uSv/h:

750uSv/h:

Calculate the average of the three points: V1 = 7.268421 uSv/h

V2 = 71.76684 uSv/h

V3 = 753.8526 uSv/h.

Based on these three data, a new calibration factor S can be calculated:

S = (V1 × S0 / 7.5 V2 × S0 / 75 V3 × S0 / 750) / 3

For example: S0 = 2.1, after correcting the correction factor based on the above three sets of measurement data,

S = (7.268421 × 2.1 / 7.5 71.76684 × 2.1 / 75 753.8526 × 2.1 / 750) / 3

= 2.051806

≈2.05

209-211, Block A, Fanghe Zhengyuan Office Building, No. 16 Guanghua Road, Zhangjiawan Development Zone, Tongzhou, Beijing

Tel/Fax (switchboard) 010-57118919 (straight line) 13501267210

QQ Zip code: 101113

E-mail:

Http://