The basic function of all intelligent: SJG-2083 Chinese online acid concentration meter using high-precision AD conversion and microcontroller micro-processing technology, can complete the HCL concentration measurement, temperature measurement, automatic temperature compensation, automatic range conversion, instrument self-test and other functions.
High reliability: The components are integrated into the block circuit board without complex function switches, adjustment knobs and potentiometers.
Strong anti-interference ability: The current output adopts photoelectric coupling isolation technology, which has strong anti-interference ability and realizes remote transmission. Has good electromagnetic compatibility.
Waterproof and dustproof design: protection and other IP65, suitable for outdoor use.
Automatic range conversion: automatic conversion of the range within the measurement range covered by the electricity.
RS485 communication interface: It can be easily connected to the computer for monitoring and communication.
Phase Sensitive Detector: Eliminates the effect of a wire on the measurement of hydrochloric acid concentration.
Automatically convert measurement frequency: Avoid electrification and improve measurement accuracy.
The main features of the entire Chinese display, friendly interface: the use of high-resolution dot matrix graphic LCD module, all the data, status and operational tips are Chinese display, there is no manufacturer-defined symbols or code.
Simple menu structure, text-based dialogue with the human table: compared with the traditional meter, SJG-2083 features a lot of increase, due to the use of a separate menu structure, similar to the operation of the computer, use more clear and convenient. It is not necessary to memorize the operation steps and the operation sequence. You can operate without the instructions and follow the on-screen instructions.
Simultaneous display of multiple parameters: HCL concentration, output current, temperature, time and status are displayed on the screen at the same time. The main display shows HCL concentration values ​​in 10x10mm format: eye-catching and visible distance; 6 sub-displays display output current, temperature, status, day, month, day, hour, minute, and second in 5x5 specifications to meet the user's different usage habits. And provide a time base for the secondary table.
Multi-function and practical notebook functions: Faithful recording of the operating conditions of the instrument and the occurrence of the alarm, easy to manage.
History curve and digital recorder function: The secondary meter automatically stores the secondary measurement data every 5 minutes and can continuously store the concentration of hydrochloric acid for months. Provides "historical curve" display and "timed fixed point" query two ways, "history curve" reflects the trend of the concentration of hydrochloric acid values ​​as a whole and the process is conducive to finding problems and solving problems. "Timed fixed point" function will get the measured hydrochloric acid concentration value at a specific point and time.
Digital clock function: Displays the current time and provides a time reference for the digital recorder function.
Backlight function: can be used in dimly lit or completely dark environment, according to the temperature changes, automatically adjust (can also be manually adjusted) contrast to clear, in order to meet personal habits.
Anti-program fly dead: The open dog program ensures that the instrument will not crash, which is the basic requirement of the online instrument.
Output current setting and check function: Manual current source function, which can check and arbitrarily set the output current value, which is convenient for detecting the recorder and the lower unit.
Two calibration methods: 2.00%, 4.00%, 6.0%, and 8.00% HCL can be selected for automatic calibration and manual input of electrical coefficients.
Chapter 2 Specifications 1, measurement range: Concentration: (0.00 ~ 15.00)% HCL, temperature: 0 ~ 99.9 °C;
2. Basic error of electronic unit: concentration: ±1.0%, temperature: ±0.3°C;
3, automatic temperature compensation range: 0 ~ 99.9 °C;
4, measured solution: 0 ~ 99.9 °C, 0.6MPa;
5, the basic instrument error: concentration: ± 2.0% (error after common point calibration can be less than 0.05%),
Temperature: ±0.5°C (0.0°C≤T≤80.0°C);
6, electronic unit repeatability error: ± 1.0%;
7. Electronic unit stability: ±1.0%/24h;
8, galvanic isolated output: 4 ~ 20mA (load <750Ω);
9, the output current error: ≤ ± 1% FS;
10, temperature coefficient compensation range: (0 ~ 10.0)% / °C (adjustable)
11, alarm relay: AC220V, 3A;
12, RS485 communication interface;
13, power supply: AC220V ± 22V, 50Hz ± 1Hz;
14, protection, etc.: IP65;
15, clock accuracy: ± 1 minute/month 16, data storage capacity: 1 month (1/5 minutes)
17, data continuous power-down save time: 10 years 18, dimensions: 146 (long) × 146 (width) × 108 (deep) mm,
Opening size: 138×138mm;
19, weight: 0.8kg;
20, working conditions: ambient temperature 0 ~ 60 °C relative humidity <85%.
The working principle of the instrument is to indirectly measure the concentration of the solution by measuring the conductivity of the solution. It is known that at a constant temperature, the conductivity of the low-concentration electrolyte corresponds to the concentration of the solution, and the concentration does not change. When the solution temperature changes, the conductivity also changes, that is, the concentration of the solution is a function of conductivity and temperature. If the temperature of the solution can be measured and it is corrected to the conductivity at the standard temperature according to the foregoing relationship, it can be directly converted to the concentration of the solution. It should be emphasized that the concentration of the solution is the sum of the conductivity of the conductive ions in the water. If there are two or more conductive components in the water, the above concentration-temperature-conductivity data can be measured. The instrument can also be used. Measurement; If the ratio of the conductive composition in the water is uncertain, you cannot use this instrument to measure.
In order to avoid electrification, the instrument generates a square wave signal with high stability and is added to the conductivity cell. The current flowing through the conductivity cell is proportional to the concentration of the measured solution. After the secondary table converts the current from a high-impedance op amp to a voltage, it is programmed. After signal amplification, detection and filtering, a potential signal reflecting the concentration is obtained; the microprocessor alternately samples the temperature signal and the conductivity signal, and after calculation and temperature compensation, the concentration value at a constant temperature is obtained.
The temperature coefficient setting range is 0~10%°C-1, and the temperature coefficient for measuring the HCL concentration is set at 1.60%. It is recommended that users do not modify it.
When “Automatic†is selected in the “Temperature Measurement†item, and the good temperature compensation power is connected, the temperature value shown in this table is the measured value of the temperature compensation power and the instrument will perform automatic temperature compensation. When “Manual†is selected in the “Temperature Measurement†item, the meter is in the manual temperature setting state, ie, the actual temperature of the measured liquid is not detected, but the temperature value manually set by the user is used and displayed, and the temperature is on the display screen. There will be a "hand" in front of the value, and the instrument will perform manual temperature compensation.
Chapter 4 Installation of the Instrument 4.1 Unpacking SJG-2083 The Chinese On-line Acid Concentration Meter is composed of a secondary meter and a sensor. The electrical constant is divided into 30.000, 40.000, and 50.000. In general, 30.000 can be used. Stainless steel shields are also available for outdoor installation. When the user unpacks the box, please check the quantity, specifications and accessories of the instrument according to the packing list. If the quantity is incorrect or the model does not match, contact the manufacturer or the seller.
1. SJG-2083 secondary table 2, measuring cell or measuring device cover 3, electrically conductive (user-selected) branch 4, instruction manual 5, packing single
Material Selection:
1. Frame: 2MM thicknesses cold-roll Stainless steel.
2. Motor: Germany SEW brake motor (outer), power 0.75KW, power supply 220V.
3. Control system: Imported Japan Mitsubishi converter and PLC to control of electric box (150%1HZ)
4. Opening & closing speed: 0.6-1.5m/s (adjustable).
5. Safety Device: Korea Photocell Sensor, emergency stopping reaction when sensing obstacles.
6. Curtain: France high-density polyester fiber and the surface coating processing, thickness 0.8MM, variety colors can be chose: Red, yellow, blue, green, orange, gray, white, transparent, etc. Tensile strength: 4000/3500N/5cm, tear strength 600/600N. Fire-proofing level: German standard DIN75200 Usage temperature: -30 ° C +70 ° C.
7. Wind resistant: The Aluminium alloy Reinforce Girder to increase wind resistant effect.
8. Curtain replacement function: Aluminium alloy Reinforce Girder is loaded between 2 pieces Curtain, can be replaced easily if any curtain broken, save your cost.
9. Transparent window: 1.2MM thickness transparent PVC window, size and location is up to your request, more safer.
10. Seal: Seal brush are Installed inside the guides, and the special bottom design, to fit any uneven ground.
11. Cotrolling way: Push button + radar sensor, very convenient.
12. Limiting Switch: Mechanical limiting switch, easily and exactly.
13. Emergency STOP: With emergency stop button on control panel, can stop easily by
Hand once disconnect or accident
14 Fault recovery function: All Hongfa's production is with fault recovery function, system will self-recovery after power cut off.
15. Delivery time: About 7 business days with contract and deposit confirmed.
16. Pyament item: 50% before production, and the other 50% before shipment.
17. Warranty Details: We provide 12 months warranty for all doors and accessories (except man-made disasters, Irresistible natural disasters, ect^).
We have many professional engineers with rich experience, qualified products, perfect service system, and good cooperation relationship with many famous companies.
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