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Climate control system


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Islamabad (Islamabad Capital Territory)
TECHNOLOGICAL PRODUCTS • Access Control System ( Honeywell / BOCSH ) • Public Address System ( BOSH / TOA / AC Audio )
Rs 1.000
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Pakistan (All cities)
Overview The automatic control for the molten steel level of the mold is one of the key technologies of continuous casting production. It is very important to reduce the labor intensity of workers, improve production efficiency, improve the quality and output of casting billet, reduce overflow and breakout of steel and improve the management level of steelmaking and continuous casting. The molten steel is poured into the mold. In order to prevent overflow, the molten steel level must be kept stable. Otherwise, during the casting process, if the level will fluctuate too much, and slag will be involved, forming surface slag inclusion on the surface of the casting billet, affecting the quality of the billet. The test points out that the relationship between the level fluctuation and the depth of casting billet surface slag inclusion is as follows: The experience has shown that surface slag inclusions can be eliminated when the level fluctuation is within ±10mm. At the same time, if the level fluctuation is more than 10mm, the rate of longitudinal cracks on the casting billet surface is 30%. It means that the level fluctuation directly affects the surface quality of the casting billet. The principle of the system The eddy current type molten steel level gauge is the key to the system. The system operates reliably and has excellent performance: high temperature resistance, strong anti-interference ability, fast dynamic response (lag time 0.10s), high detection accuracy (±05mm), and large measurement range (0-150mm). The selected electromagnetic field frequency ensures that the level detection probe only detects the level change of the mold and does not detect the mold flux or steel slag layer. The system has the advantages of simple operation and no radiation protection problems. The system is insensitive to argon blowing, and its sensors can be mounted on the tundish car or on the platform. The sensor is cooled by compressed air during use. The principle is shown in the figure A high-frequency exciting winding is installed above the molten steel surface of the mold. The high-frequency magnetic field generated by the high-frequency exciting winding induces eddy currents on the molten steel surface to form a magnetic field. The magnetic field generated by the induced eddy current is in the opposite direction to the magnetic field generated by the high-frequency exciting winding, which changes the impedance of the high-frequency exciting winding. Under the condition that the winding material and structure, steel grade, temperature remain unchanged, the coil impedance change only has a single-value function relationship with the height of the molten steel level. As long as the impedance change of the high-frequency winding is detected, the change of the molten steel level in the mold can be converted. The components of the system Continuous casting mold level automatic control system is composed of eddy current tyoe molten steel level gauge, controller and digital actuator for adjusting the opening of tundish stopper. The detection end of the mold level automatic control system is ① eddy current displacement sensor, which uses the eddy current mutual inductance effect between the energized coil and the metal conductor to detect the distance. The effective signal of the eddy current sensor is amplified and linearized by the circuit of ② mold level gauge, which converts the 0-150mm change in the molten steel level of the mold into a standard signal of 4-20mA.DC, and then transmits it to the ③ control computer to complete data processing and system control functions. We can also control the actuator manually and automatically through the ④on-site operation display control panel, and the opening of the stopper is controlled by the ⑤ actuator to realize the automatic control of the molten steel level. 1 Eddy current sensor; 2 mold level gauge; 3 control computer; 4 On-site operation display control panel; 5 digital actuator; The control principle of the system The system can be set to four control modes: automatic, semi-automatic, manual and motor clutch. The automatic mode is the closed-loop control system of the molten steel level, and control the opening of the stopper by the digital actuator; the semi-automatic mode uses opening degree setter and digital actuator to set the opening of the stopper manually; the manual mode is to open and close the button directly to control the opening of the stopper; the motor clutch mode is quickly changed from any of the above control methods to manual stopper operation. The functions of the system also include: display and record of molten steel level, nozzle opening and casting speed; setting of molten steel level and nozzle opening; alarm of molten steel level at limit value etc. In addition to taking the detection of molten steel level as the main feedback signal of the control system, the control system also considers various interference factors that have an impact on the level control. These interference factors include: 1. The influence of the change of the flow characteristics on the control system after the melt loss of the stopper 2. The influence of the weight change of molten steel in the tundish on the control system 3. The influence of the change of the casting speed of the continuous casting machine on the control system 4. The influence of the mold width change (the mold width is adjustable) on the control system 5. The influence of the vibration frequency and amplitude of the mold on the molten steel level gauge The function and software implementation In order to overcome these disturbances, the mold level control strategy adopts PID control. And on the basis of PID control, self-adaptive correction and feedforward control are introduced to form an advanced control system. The level control is the main loop, and there is a proportional gain of the main loop controller. According to the self-adaptive correction of the mold width change and feedforward compensation of casting speed, so as to further reduce and eliminate liquid level fluctuations caused by mold width adjustment and casting speed changes. In order to reduce the frequent action of the stopper, the system adopts the intergarting time change of the controller, and automatically selects a longer intergarting time when the molten steel level fluctuates lightly. And the system will choose a shorter intergrating time when molten steel level fluctuates greatly. Thereby, the fluctuation of the controlled object caused by the frequent action of the stopper rod is suppressed. In the signal processing of molten steel level gauge, an appropriate filtering link is added and the vibration frequency synchronous filter is used for filtering processing, which can overcome the interference of mold vibration frequency and amplitude variation.
Rs 200.000
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Islamabad (Islamabad Capital Territory)
We Link Corporation Deals In All Kind of Home & Office Products Security Surveillance System CCTV Security Analog Day Night Cameras. IP Base CCTV Cameras 2 Megapixel, 5 Megapixels. DVR (Digital Video Recorder) NVR (Network Video Recorder) HVR (Haybard Video Recorder) Biometric System Biometric Time Attendance System. Biometric Attendance & Access Control System. Facial Attendance & Access Control System RFID Access Control System. Fingerprint, RFID Cards, Password Access Control System RFID Cards Electric Bolt & Magnetic Door Locks Point Of Sale Items Thermal Receipt Printers Barcode Scanners Cash Drawers We Provide 1 Year Warranty & Services after sale Absolutely Free with No Visiting Charges. We Provide Our Services in ISLAMABAD, RAWALPINDI, PESHAWAR, ABBOTABAD, MANSEHRA, BATAGRAM, MARDAN, SWABI, CHARSADA, DARGAI, MALAKANAD, BATKHELA, MINGORA SWAT, KHWAZAKHELA, SHANGLA, DI KHAN, KOHAT and Gilgit. For any query feel free contact us on 051-5389303, 0346-6559798, 0323-9259789 Address Office # 8-B, Aurakzai Plaza, Lehtrar Road, Khana Pull, Islamabad Email_ linkcorporation@mail.com , linkcorporationisb@gmail.com
Rs 35.000
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Pakistan (All cities)
The composition of the system The photoelectric strip automatic center position control system is mainly composed of sensors, amplifiers, PLC controllers, hydraulic control and other parts. System composition block diagram The main technical parameters 1. Detection width: 300-2800mm 2. Detection light source: 220VAC. (100VAC) 30W. High frequency white light works continuously 3. Photodetector: precision die-casting components, time constant 20ms 4. Maximum working voltage: 50VDC 5. Distance from receiver to emitter: 300-1000mm 6. Operating temperature: 0℃-60℃ 7. Resolution: 0.5mm 8. Linearity: ±1%F.S (after linearization) 9. Repeatability error: △R1%, F.S 10. Servo-valve working signal: ±10V 11. Rated pressure (oil pressure): 4.5Mpa 12. Rated flow: 30L/min 13. Symmetry: 10%
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Lahore (Punjab)
The New Linux F0-18 Time Attendance Plus Access Control System Features .1 touch a-second user recognition .Fingerprint reader with durable and highly accurate ZK optical sensor .Stores 3000 templates, 5,000 cards and 100,000 transactions .Reads Fingerprint and/or Card .Optional integrated smart card reader .Built-in Serial and Ethernet ports .Tamper-proofs switch and alarm outputs .Request-to-exit and alarm contacts .Audio-Visual indications for acceptance and rejection of valid/invalid fingers Contac Link Corporation
Rs 13.000
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Islamabad (Islamabad Capital Territory)
CSP is a full service general contractor specializing in Residential, commercial, institutional renovation / construction & Security surveillance. We offer traditional general contracting services as well as designing, planning & management services. We provide services including • CIVIL CONSTRUCTION • ELECTRICAL WORKS • MECHANICAL WORKS • FABRICATION • SECURITY SURVEILLANCE Building Services Building services includes Full design, advisory and Trouble shooting Exercises associated with Building services. Some of the specifically indicated are Aluminum, Wood & glass work Building renovation & Construction. False Ceiling of all type Window Blinds venation/ Vertical Tile flooring Wooden flooring Building paint & Polish. Electrical work of all type. Heating & Cooling system Roof Waterproofing & Heat insulation. Electronic Security CCTV Surveillance System Access Control & time Attendance System Panic Alarm System Fire Alarm System Walk Through Gates and Detectors GSM Alarm System Gate Automation System Under vehicle Surveillance System Mechanical Security Anti-Shatter Film / Blast Film Mesh Fence Bullet Proof Door, Steel Doors Bullet Proof/ Metal Automatic Gate Security Guard Post Windows Safety Grills Razor Wire / Concertina Wire Arms / Boom Barriers Hydraulic Road Blocker Civil Construction Safe Room / Panic room Blast Proof Walls / T-Walls RCC Boundary Walls Sand Walls 215, 2nd Floor, Capital Business Center, F-10 Markaz, Islamabad Ph: +92 51 2809515-6 Ph: +92 51 2535304 Cell: +92 343 2002000
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Lahore (Punjab)
Electronics Doctor.... contact# 03074422991 ZK software F18 2.4" TFT RFID Fingerprint Time Attendance Clock + Access Control Brand New Description: F18 is an innovative biometric fingerprint reader for access control applications, offering unparalleled performance using an advanced algorithm for reliability, precision and excellent matching speed. The F18 features the fastest commercial-based fingerprint matching algorithm and ZK high-performance, high-image quality optical fingerprint sensor. The device offers the flexibility to be installed standalone or with any third party panel that supports 26-bit Wiegand. All the operation can be done on the TFT-LCD. The fingerprint image will display on the screen. That will guide the user to put the finger on to proper position and increase the recognition rate. TCP/IP and RS485 are available that the device can be used in different network. Features: Fingerprint reader with durable and highly accurate ZK optical sensor 1 touch a-second user recognition Stores 1,500 templates, 5,000 cards and 30,000 transactions Reads Fingerprint and/or Card Optional integrated smart card reader Built-in Serial and Ethernet ports Tamper-proofs switch and alarm outputs Request-to-exit and alarm contacts Audio-Visual indications for acceptance and rejection of valid/invalid fingers.
Rs 21,5
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Lahore (Punjab)
Electronics Doctor.... contact# 03074422991 Model: Support the access contorl function(differet time open the door,people open the door,disassemble the police,Police have no closed the door,the door is opened illegally alarm,door button input,Wired doorbell interface,all the way alarm output,stress alarm,etc.)and attendance functions,Can be equipped with access control software and ground software. Fingerprint Template Capacity:500 Record capacity:30000 Communication:TCP/IP or RS485/RS232 communication Power Supply: Standby current:50mA Working Current:400mA Fingerprint: 2000 Storage:50000 Language: Simplified Chinese Traditional Chinese Enlish .
Rs 22,29
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Pakistan
Doesn't Matter where you are, you can have 24/7 look at your Home, Facory or Business Place via online CCTV Cameras.
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Pakistan (All cities)
Overview The system realizes the fixed-length measurement of the width, thickness and length of the continuously cast product through machine vision and laser rangefinding system. The measured data is transmitted to the host system through the optical fiber. The host system calculates the weight of each billet according to different steel grades and specific gravity, so that we can realize the fixed length measurement and fixed weight control of the cast products and the precise control of the steelmaking process in the production process. After cutting the billets by fixed weight and length, the fixed weight cut-to-length system is checked by the online weighing measurement system, so as to give feedback to the fixed length model of control system. The slab number (automatic checking) can also be automatically identified online by using machine vision, and the weight and slab number can be automatically stored in the local database for use in the production and management system. The measuring principle of the system On the upper surface of the billet, a set of linear CCD cameras and a laser rangefinding instrument are respectively installed. Through machine vision and laser correction, we can achieve precise measurement of the cast products’ shape. Through accurate cast products’ shape monitoring, the billet thermal expansion coefficient of cast products and cast products’ density at the current temperature, we can obtain the quality of the billet. At the same time, we can achieve high-precision quality cut-to-length , namely, fixed-weight and fixed-length. The system can be matched with the weight detection and calibration system. The system adopts the online barrier-free hidden integral roller table weighing method for continuous casting products, and connects its weighing data into the intelligent control model. The model and steel billet weighing system, and the fixed weight cut-to-length system realize the closed-loop control of the system model, and optimize the fixed weight accuracy through automatic signal collection. The features of the equipment The cutting control technology for fixed-length and fixed-weight of cast products is a concrete manifestation of the lean production management of steel products. In the era of high-quality competition of steel products, only high-end intelligent technology and management can reduce costs, improve quality and market competitiveness. 1. Data management can be carried out according to shifts, pouring times, days, weeks, months, etc., as well as data management according to specifications, production capacity, quality, etc. 2. Each stream can send out signals such as pre-clamping, clamping, cutting, roll-up, roll-down and return of the cutting car according to the user's requirements. 3. The detection and cutting precision is high, the controllable length sizing accuracy is ±1mm, and the quality sizing accuracy is more than 1.5‰. 4. It is not sensitive to other high-intensity light interference, and overcomes the influence of light sources such as sunlight and arc welding. 5. The monitor displays the running status of the current hot billet in real time and displays the corresponding parameters. 6. Laser rangefinding and CCD machine vision are used to calculate the weight of the cast products and optimize the cutting to length. 7. Historical cutting data is automatically stored, and the system can set rules for historical data. 8. Support the free transformation of fixed length, and a variety of operation modes are available for the operator to choose. 9. Adopt advanced high temperature laser measurement and high pixel linear CCD technology. 10. The system provides abundant interfaces, which can communicate with the PLC control. 11. Applicable to all kinds of continuous casting machine flame cutting system. 12. Provide automatic, upper and manual cutting control. The main technical requirements 1. Width range of the inspected cast product: 120~2000 mm 2. Length range of the inspected cast product: 1000~20000 mm 3. Thickness range of the inspected cast product: 35~400 mm 4. Steel billet moving speed: 3.5 m/s 5. Billet running speed: 6.5m/min 6. Temperature of the measured steel billet: 0~850 °C 7. Measurement accuracy: width ±0.2mm thickness ±0.2mm length ±0.2mm 8. Fixed weight accuracy: 0.8‰ (temperature model verification) 9. Quality inspection check: 1‰
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Pakistan (All cities)
Overview The infrared converter slag detection system uses a far-infrared thermal imager to monitor the situation of converter tapping in real time, and is connected to the main control computer in the electrical room through the conversion and transmission of video signals. The radiation intensity in the infrared wavelength range of 7-14um is different to distinguish molten steel and slag. In the later stage of the converter tapping, the molten steel gradually decreases, and the steelmaking slag is involved in the molten steel and flows out of the tapping hole. After the thermal imager recognizes the steelmaking slag in the imaging temperature measurement, it will give an alarm according to the slag content ratio threshold set by the software. The thermal imager will start the slide plate to close the tapping hole, so as to realize the control of the slag in the converter tapping, and ensure the maximum yield of molten steel and the minimum control of the steelmaking slag content. The effect of slag detection in converter tapping is of great significance to the control effect of the slag amount. The converter slag detection and control system developed by our company conducts non-contact monitoring of the tapping steel flow through the far-infrared detector thermal imager. It can detect the slag condition in real time and output an alarm signal and control system, which can replace manual visual inspection and provide accurate, efficient and stable slag detection effect. When the system finds the slag, the intelligent control unit quickly makes a judgment of lifting the furnace and blocking the slag and outputs an alarm signal. As shown in Figure 1, the system includes thermal imager, front purge protection box, front electrical box, power distribution cabinet, main control monitor, monitor of rocking furnace chamber, sound and light alarm, infrared converter slag monitoring software system, etc. The features of thermal imager 1. The temperature measurement range is 200°C ~ 2000°C, high temperature measurement accuracy, and multiple temperature measurement intervals can be set. 2. High-resolution thermal imaging system, the imaging picture is clear, and the imaging color can be freely marked according to the set temperature. 3. With hot zone alarm function, the alarm zone and temperature range can be set arbitrarily. 4. With hot zone tracking function 5. Equipped with special 7~14um infrared filter lens The technical parameters 1. Temperature measurement range: 200°C ~ 2000°C 2. Temperature measurement accuracy: 2% 3. Detection accuracy and alarm accuracy: ≥98% 4. Resolution: ≥ 0.5℃ 5. Pixels: 640x240PT 6. Band: 7~14um 7. Field of view: 7.5°×5.5° 8. Frame rate: ≥ 25 frames/sec 9. Equipment service life: ≥5 years 10. The normal operation rate of the automatic control system: ≥99%
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3 photos

Islamabad (Islamabad Capital Territory)
We Link Corporation Deals In All Kind of Home & Office Products Security Surveillance System CCTV Security Analog Day Night Cameras. IP Base CCTV Cameras 2 Megapixel, 5 Megapixels. DVR (Digital Video Recorder) NVR (Network Video Recorder) HVR (Haybard Video Recorder) Biometric System Biometric Time Attendance System. Biometric Attendance & Access Control System. Facial Attendance & Access Control System RFID Access Control System. Fingerprint, RFID Cards, Password Access Control System RFID Cards Electric Bolt & Magnetic Door Locks Point Of Sale Items Thermal Receipt Printers Barcode Scanners Cash Drawers We Provide 1 Year Warranty & Free Services After Free Absolutely With No Visiting Charges. We Provide Our Services in ISLAMABAD, RAWALPINDI, PESHAWAR, ABBOTABAD, MANSEHRA, BATAGRAM, MARDAN, SWABI, CHARSADA, DARGAI, MALAKANAD, BATKHELA, MINGORA SWAT, KHWAZAKHELA, SHANGLA, DI KHAN, KOHAT and Gilgit. For any query feel free contact us on 051-2617414 051-5389303, 0346-6559798, 0334-5598416 Address Office # 8-B, Aurakzai Plaza, Lehtrar Road, Khana Pull, Islamabad Email_ linkcorporation@outlook.com, link.corporation@yahoo.com
Free
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Karachi (Sindh)
We Deal In All Products Boundary wall laser beam sensor system. Boundary Wall Razor Wire for Sucre Boundary Walkthrough Gate, Metal Detector Automatic gates system & All type of automation systems. Access control system. Easy car GSM, GPRS Tracker system.( Self Monitoring system) Finger print machine, Access Control system CCTV, Camera, DVR. Stands Alone & DVR Card PABX EXT card & Electric lock system. Civil Contraction and Electrical Work Tile, marble Fixing, coloring and Gate Fabrication Wee enclose introduction brochures about for your review and we hope that the information will provide many of the answers to the questions you might have looking forward to your earlier response. Regards, EASY AUTOGATES www.easyautogates.com
Rs 90.000
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Pakistan
We Deal In All Products Boundary wall laser beam sensor system. Boundary Wall Razor Wire for Sucre Boundary Walkthrough Gate, Metal Detector Automatic gates system & All type of automation systems. Access control system. Easy car GSM, GPRS Tracker system.( Self Monitoring system) Finger print machine, Access Control system CCTV, Camera, DVR. Stands Alone & DVR Card PABX EXT card & Electric lock system. Civil Contraction and Electrical Work Tile, marble Fixing, coloring and Gate Fabrication Wee enclose introduction brochures about for your review and we hope that the information will provide many of the answers to the questions you might have looking forward to your earlier response. Regards, EASY AUTOG GATES
Rs 60.000
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Karachi (Sindh)
We Deal In All Products Boundary wall laser beam sensor system. Boundary Wall Razor Wire for Sucre Boundary Walkthrough Gate, Metal Detector Automatic gates system & All type of automation systems. Access control system. Easy car GSM, GPRS Tracker system.( Self Monitoring system) Finger print machine, Access Control system CCTV, Camera, DVR. Stands Alone & DVR Card PABX EXT card & Electric lock system. Civil Contraction and Electrical Work Tile, marble Fixing, coloring and Gate Fabrication Wee enclose introduction brochures about for your review and we hope that the information will provide many of the answers to the questions you might have looking forward to your earlier response.
Rs 15.000
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