Patiently specifically, the specific use of JCF-5H is used to use the use of various function keys to help prepare for use and is better use of the instrument in your hand.
This universal instrument is equipped with a high-definition dot matrix LCD screen, which can reduce the power consumption of the instrument while obtaining accurate detection data, so that the instrument is used for a long time in the outdoor no power condition.
The above figure is a front-side and back side of the instrument. The front is composed of a control key and a liquid crystal screen, and the back is composed of switches, data, detection ports, power supplies, and temperature and humidity interfaces.
This general-purpose dust detector has been well received and recommended since its listing, and has been in the top of our dust, which is worth recommending for you for many years. The instrument is sealed by spray metal shells and engineering plastic, and is more durable for a variety of industrial and mineral environments.
One: Front panel
(1) Display: 128 × 64 dot matrix liquid crystal display;
(2) Reset key: see the operation instructions for use;
(3) Test key: Press this button to enter the test program, the microcomputer completes the sampling, calculation and data display by preset;
(4) Data Key: Press this button to display the current storage area data;
(5) Division key: When displaying the storage area data state, press this button to change the display mode, (always display, distinguish);
(6) Set (←) button: Press this button to set the test item, test cycle, sampling time, print mode, etc., use the method of use;
(7) Self-school (→) button: Press this instrument to automatically enter the self-state, check whether the working status of the circuit is normal, use the method to see the operation instructions;
(8) Confirm key: This button is determined for setting corrections;
(9) Delete (Clock) button: This button is used to delete storage area data and clock settings, and use the method to see the operating instructions.
Two panels
(1) "intake" sampling gas enters the air pump from this opening;
(2) "ventilation" is discharged from this mouth;
(3) "Power" external 12.6V charging power supply;
(4) "Switch" instrument power switch;
(5) "Data Output" is the RS232 communication interface;
(6) "Temperature and humidity" is a temperature humidity test sensor socket
The self-school function is whether the microprocessor determines whether the internal circuit of the instrument is good.
The operation method is as follows: Under the screen "Please click" prompt, press the "self" button, at this time, the program enters the self-state, and the self-calorie time is 1 minute. When self-school, the screen displays "I am self-school". After 1 minute, if the instrument is successful, the screen shows "self-school". If the self is not successful, the screen displays "self-school mistakes, please check", and the self-school is unsuccessful, then the microprocessor can't be corrected. The disorder of the instrument will not guarantee the test accuracy.
Finally, how to operate the heavy test work?
A. Select test items:
1. After pressing the "Setting" button, the screen displays "Measurement Period Setting XX", this value is the number of times the measurement value, (press the "↑ ↓") button to set. If it is set to "03", the average value of 3 measurements is displayed after 3 times, and the ambient temperature, the humidity test value is stored in the corresponding storage area.
2, the test cycle is set, press the "confirm" button, the screen display "Sampling time set 01 minutes" This value is time to each sample, the instrument defaults for 1 minute, if there is a special need to press "↑ ↓" button Set 2, 3, 4 ···.
3, the sampling time is set, press the "Confirm" button, the screen displays "public integer setting", and the instrument defaults to "metric". (Introducing the special needs when testing the "particle number", is usually set to "metric").
4. Press the "Confirm" button, the screen displays "printing mode setting", the instrument defaults to "manual".
5, press "Confirm", the screen display "Test Method" instrument defaults to "PM10-TSP", if you need to select "Particle Number", press "↑ ↓" to select.
6. Press the "Confirm" button to return to the home screen.
B, start measurement
Press the "Measure" button, the instrument enters the measurement state, and the screen displays "PM10 / PM2.5 / TSP measurement":
The measured value shown is the measured unit cubic meter PM10, PM2.5, TSP concentration, accumulated plus number, after 1 minute (such as a set sample time for 1 minute), and then continues to sample after 10 seconds. When tested to a preset cycle (such as 3), the average value, temperature, humidity of 3 test values will be displayed, and this set of data is stored in the storage area, and the next cycle is performed.
If you need to test the number of particles, you can press "Set" to select the "particle number" to test the air clean degree of 300,000-level -1 million-level environments, and display the corresponding cleanliness level.
C, data query
Under the main screen "Please click" prompt (if you press the reset button in the test state) Press the "Data" button, the home screen displays a set of data for the latest test.
D, reset
When you need to change the current operating state of the instrument, press the "Reset" key instrument to return "Please"
E, communication connection
The instrument is coupled to the computer, and the test data is automatically stored and automatically transmitted to the predetermined super terminal file storage.
Using the USB-RS232 dedicated cable equipped with this unit, the rear panel printout of the instrument can be done with the computer USB port.
F, printer connection
The 25-core cable provided with the printer is connected to the machine's printer interface. At this point the printer works indicator, at which the printer work indicator is on, when the screen displays the storage area test data, press the "Print" button of this machine. This data can be printed.
It should be noted that although this will be sold many years in the market, it is still a relatively precise testing instrument, but also needs to be carefully maintained and kept to better achieve its value, and organize it. 5 precautions for your reference.
(1) Instruments are prohibited in a high dust concentration environment, in an environment of water, oil and corrosive substances and in high temperature environments;
(2) Work should be operated without pressure difference and temperature difference in the working position of the sampling port and the instrument;
(3) The power plug holder must be reliable;
(4) The instrument avoids vibration and impact when moving;
(5) This instrument does not apply to the need for explosion-proof.
Editor in charge: GT, read full text
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