Temperature Protection PTC Thermistor Description PTC (positive temperature coefficient )thermistor switches at one particular temperature. Making use of the characteristics that the resistance of PTC thermistor increases sharply above curie temperature, when ambient temperature increases abnormally, protective circuit installed PTC thermistor will turn on or cut off loop through resistance changing, achieving thermal protection purpose. PTC thermistor protect such equipment and components as motors, transformers, power transistors and thyristors against over-temperature. A PTC thermistor is less expensive than a thermostat, and its switch temperature can be more accurately specified. It is also smaller and easier to design-in to electronic circuitry. Therefore PTC thermistor can be ideal devices for temperature detection, monitoring, indicating, limiting and over (excessive) temperature protection. Typical Application of PTC Thermistor for Temperature Protection and temperature limiting sensors Limit temperature measurement of Industrial electronics application. Power supplies, switch power supply. Home appliances, such as dish washers, washing machines, ironing machines, electric cookers, etc. Electronic data processing and communications engineering (DC/DC converters). Motor windings overheating Protection. Automotive electronics. Semiconductor heatsinks, enclosure panels, temperature-limited transistors. Lighting applications. Features of PTC Thermistor for Temperature Protection and temperature limiting sensors 2 Outlook construction: A-radial leaded epoxy resin coated form, B-metal tag lug form. PTC Thermistor Protection temperature: 60-130C Quick response. Long stability. Small dimension, convenient for installation. Do not need to be reset after protection.
Telecom PTC Thermistor Description This series of ceramic PTC (positive temperature coefficient ) thermistors help provide protection against power cross, power induction surges and lighting surge defined in ITU, Telcordia, UL. Available in chip, radial-leaded coated and non-coated, SMD, twin vertical surface mount configuration. PTC thermistor overcurrent protector provides reversible, self-resetting protection against over-currents of telecommunication line protector units, improve the reliability of custom premises and network equipment. Ceramic PTC thermistors can be found providing re-settable line protection at the exchange, monitoring hot spots and protecting ringers, battery feeds, transformers and relay circuits. Also used extensively to protect the mobile phone's battery pack against overcharging in land-based and radio mobile communications. Advanced developments in telecom equipment in recent years have radically altered the protection requirements of both exchange and subscriber equipment. The PTC thermistor must protect the telephone line circuit against overcurrent, which may be caused by the following examples: Surges due to lighting strikes on or near to the line plant. Short-term induction of alternating voltage from adjactent power lines or railway systems, usually caused when these lines or systems develop faults Direct contact between telephone lines and power lines. To provide good protection under such conditions, a PTC thermistor is connected in series with each line, usually as secondary protection; However, even with primary line protection (usually a gas discharge tube), the PTC thermistor must fulfill severe requirements. Surge pulses of upto 2KV can occur and in order to withstand short term power induction, the PTC thermistor must withstand high voltages. If the line has primary protection, a 220V to 300V PTC thermistor is adequate. Without primary protection, 600V PTC device is necessary. We can manufacture a series of PTC thermistor fulfilling both requirements. Typical Application of PTC Thermistor in Telecommunication Protection Central Office Switching Equipment (C.O), analog and digital line cards, T1/E1 equipment, xDSL modems and splitters, multiplexers, CSU/DSU, servers. Primary Protection Modules, MDF (main distribution frame) modules, network interface devices (NIC). Custom Premises Equipment, also known as subscriber terminal equipment (T.E.), IT equipment: Modem, phone sets, fax machines, phone wall outlet (plugs), alarm systems, answering machine, PBX systems, ADSL Splitters, internet appliance, POS terminals. Access Network hardware, LAN WAN equipment, Powered Ethernet systems, VoIP (voice over IP equipment), Set-top box (S.B), etc. Telecom PTC Thermistor Features Compliant with ITU-T K20 K21 K45 Basic level lightning surges (10/700ª¦s) Basic level power Induction (600V,1A,0.2S) Power contact criteria A/B (230V,15min.) Suitable for continuous connection to main voltage 110/230 VAC in tripped (high ohmic) condition.
Cd-x08 series 3 digital temperature controller Feature 1. New algorithm using fuzzy logical pid control 2. Six alarm mode setting freely 3. Tc input, rtd input, voltage input, ampere input 4. Relay output, voltage output, ampere output 5. 3 digit led display Model and parameter 1.How to select input type Rtd Pt100(0-499.9ípc) No need custom-mode; free exchange the input way Tc K(0-600ípc) R(0-1600ípc), s(0-1600ípc)ú¼bú¿0-1800ípcú¬ú¼eú¿0-1000ípcú¬ú¼nú¿0-1200ípcú¬ú¼jú¿0-800ípcú¬ú¼tú¿0-400ípcú¬ Need custom-mode 2.Technical parameters Measuring accuracy Less ía0.5%f.Síal dig Control mode On/off control, pid direct action, pid reverse action Control accuracy ía1ípc Control output Relay output, voltage output 0-10madc output, 4-20madc output Relay contact burden 3a/250vac Power 90-250vac 60hz Anti-interference Iec 3g Carton
Cd-xoo series 4 digital temperature controller with following details. Feature 1. New algorithm using fuzzy logical pid control 2. Six alarm mode setting freely 3. Tc input, rtd input, voltage input, ampere input 4. Relay output, voltage output, ampere output Model and parameter 1.How to select the type Standard signal 0-5vdc input, 1-5vdc input 0-10madc input 4-20madc input Level input is 0-50dvc Rtd Pt100 (0-499.9íµ), gu50(0-99.9íµ) No need custom-made; freee Exchange the input way Tc K(0-600íµ), j(0-800íµ), t(0-400íµ R(0-1600íµ), s(0-1600íµ), b(0-1800íµ), e(0-1000íµ), n(0-1200íµ), l Need custom-mode 2.Technical parameters Measuring accuracy Less ía0.5%f.Síal dig Control mode On/off control, pid direct action, pid reverse action Control accuracy ía1ípc Control output Relay output, voltage output 0-10madc output, 4-20madc output Relay contact burden 3a/250vac Power 90-250vac 50hz/ 60hz Anti-interference Iec 3g Carton
Model VC1 is type of thermostat/thermal protector consisted of bimetal construction. Low resistor circuit with gold diffused point devise inside .It is suitable for household electrical appliance, dynamoelectric tool and battery that required thermal resistance protect. 24.7 x 5.4 x 6.8 mm
VA1 is a bi-metal constructed thermostat/thermal protector with low resistor circuit and gold diffused point devise inside. Its tiny size and constant temperature controlled make it exceptionally suitable for electric blanket, heating pad and household appliance. 24.3 x 9.5 x 4.4 mm
V6AP A is actuated by current passing through it and by the heat received from the ambient temperature. It has compact design, long lifecycle, reliability and more features. A variety of standard terminal, configurations is available to allow the easiest mounting and handling. Precise tripping time prevents motor overheating. 23.7 x 9.5 x 4.0 mm
V8AM is a small metal cased thermal protector, Provide both thermal and current overload protector . Apply to motor AC or DC , Lighting, Transformer, Battery packs, Ballasts and small household application 19 x 7 x 3.3 mm
The energy monitor is helping to change the energy usage habits of households and help family to save energy, money and do something for environment protection. 1) with wireles tranmitting, receiver display the current power information, the money you are spending on power. 2) history power charge you had spent for monthly and annal. Up to 2 years information can be preserved. 3) check from a single location if appliances before leaving your home. Be safe every time you leave your home. 4) an audible alarm for excessive electricity usage 5) power supply: 2pcs aa for receiver; 2pcs aaa for transmitter (not include) 6) wireless transmitting range: up to 30m in room. 7) display currencies: ú, $ & euros 8) day/week/month usage view and daily/weekly/monthly average view 9) clock/date display 10)accessories: 1 receiver, 1 transmitter with, 1 dc adaptor, 1 clip on sensor, 1 instruction manual. Packingindividual packing: 1pc/pv bag, 1set/ plain paper box; 20pcs/ctn Carton size:480x250x260mmcarton cbm:0.0312 Qty per carton20pcs/ctncartons per 20' container:833 Gross weight: 12kg/ctnqty per 20' container:16640
Universal input pid process controller With smart i/o module system - 4 digits process (pv) and 4 digits process set (sv) display - universal process input (tc, rtd, mvz , vz , maz) - optional secondary sensor input - dual or multi point calibration For zvoltage / current input - configurable on/off, p, pi, pd and Pid control forms - adaptation of pid coefficients to the system With auto-tune and self-tune - manual/automatic mode selection For control outputs - bumpless transfer - smart i/o module system - programmable heating, cooling and Alarm functions for control outputs - motorized valve control function - 8 steps profile control ( ramp & soak ) function And start-hold-stop by using logic input module - remote set point function by using analogue input modules - retransmission of process value or process control By using 0/4...20 maz current output module - detection of heater failure by using 0...5a vct input . Module - hardware configuration by using input/output modules - rs-232 (standard) or rs-485 (optional) serial communication with modbus rtu protocol Application fields applications Glass motorized valve control Plastic profile control Petro-chemistry pid process control Textile heater failure detection Automative Machine production industries
Water temperature sensor
Labotrix analysis software In line with standard for science lab equipment in primary & secondary schools issued by the ministry of education, july 19, 2006. With online and offline capabilities; multichannel data acquisition, completelyindependent research and development. Domestic embedded acquisition system, 7inch highdefinition digitallcd touchscreen. Specific features are as follows: 1, inch lcd color digital display. 2, fullfunction touch operation 3, 4 data acquisition channels, 4 analog channels, 4 digital channels, enabling the connection to four sensors. 4, plug and play sensors and automatic identification 5, 12bit high precision a/d sampling accuracy, up to 420k/s data sampling rate. 6, three standard usb interface, easy connection to keyboard, mouse, memory and other peripheral usb devices. 7, one usb_device standard interface, enabling the synchronization with the pc. 8, one sd interface for easy data storage, system upgrading. 9, builtin network card enabling the access to the internet, lan, pc for data transmission.Builtin supercapacity 4400mah rechargeable battery pack enabling 8hours power supply in the fieldwork. Advantages 1. Hardware highly concentrated, small size, leegant shape, without external power supply, the use of usb-powered and transmittiong data directly, . Convenient, safe, stable, high-speed, and providing professional experimental integrated solutions 2. Friendly software interface, teaching oriented, graphical operationg interface, simple and poweful. 3. Operating software support for multiple languages, operationg interface can be made to meet usersdemands.Language option switch languge to help reading: french german italian russian spanish portuguese
Overview Hart intelligent integration temperature transmitter is adopt the latest international digital integrated technology and automatic control with the domestic industry in accordance with the actual needs but the entire research and development of a new generation of intelligent flow totalizer, well-structured, nice appearances, the hardware use such less components and parts, no potentiometer and moving parts, full-featured, easy operation, reliability, high stability, applicable to chemical, petroleum, metallurgy, light industry, food, electricity, energy management and other fields. .
Bw thermal protector application field: Hid ballast Dc motor Battery packs Transformer Fractional horsepower motor Heating appliance The product sells point Miniature size Positive make and break with snap -action disc Suitable for most impregnation processes Competitive price 2.Rated voltage: ac250v/115v (50/60hz) 3.Rated current: 5a/8a 4.Rated open temperature range: 50~150 fc, in steps of 5 5.Tolerance: (+/-)5fc 6.Resetting temperature : lower than rated open temperature 30(+/-)15fc 7.Switching cycles in: 5, 000 cycles 8.Contact arrangement:normally closed 9.Standard contact resistance:fn50m¬+ Key specifications/special features 1.Dimension case: with leading wire 70mm normally Metal:20.0x7.4x3.8mm 15x6.7x3.2mm 155.83mm Plastic:20.8x8.0x4.2mm 15x7.2x3.8mm 156.13.2mm
Display windows : 320í-240 high resolution chart blue-white LCD Input accuracy: í+ (0.2%F.S+1) digit Input type: Standard voltage 0-5V, 1-5V Standard current 0-10mA, 4-20mA T.C: K, S, B, T, E, J, Wre325, N RTD: Pt100, Cu50, Cu100 specially input: R, WRe526, the mV signal, other output types: Switch output: Relay contact output (resistance 250VAC/0.8A or 250VAC/3A) the SSR trigger (12V/50mA) DC12V/50mA DC24V/50mA DC5V/50mA transform output: 4-20mA (the load
1.Fast response , high sensitive. 2.Glass sealing, able to stand for low temperature 3.Coaxial structure makes it easy to install and can stand for high temperature R value :10k--5000k B value :3950, 3899, 4020, 4050, 4200, etc. Precisionú¦+/-1%--+/-10%
Bi-metal thermometer Dial size: 2", 2 1/2", 3", 4", and 6" Stainless steel 304 casing, internals & socket 1% F.S., botton connection
II.Functional Characteristics 1.Dual processing chip, real virtual value measurement, agile reaction 2.Mains supply and genset power supply management, ATS control 3.Large screen backlight character LCD display 4.Chinese and English menu, interactive operation. Can be set and operated without computer. 5.Auto start, auto protection 6.Perfect auto protection, direct character display alarm details and working state, more than 50 fault records. 7.Large numbers of connected parameters: double coolant temp., double oil pressure, fuel level and oil temp. etc. 8.All the relays contact capacity is over 10A/250VAC/30VDC. 9.Electronic speed governing and mechanical speed regulation (controlling DC motor directly arecompatible. Many user-defined settings: timing start or stop etc. 10.RS232 communication, attached fªfour-remote controlfª monitoring software 11.Unique rubber bearing design with waterproof, dustproof and shock absorption features.
I.Functional Characteristics 1.Provides remote start port, time setting function of delayed start and stop ;can control genset to start , stop and load automatically. 2.All the relay output contact capacity is over 10A. 3.Convenient ATS control function, with mains supply output and genset emergency supply output. 4.Two connecting ways of Coolant temperature and oil pressure:analog measurement and alarm switch 5.Auto-record the running time of genset. 6.Protection functions: low oil pressure, high coolant, over speed, emergency stop and over crank, ect.
Tp2 application field: be used in: 1. Fractional horsepower motor 2. Fluorescent ballasts 3. Motor of washer 4. Motor of 5. Transformers 6. Lighting lamps 7. Dc motor of automobile 8. Battery changer 9. Household electric appliances 10. Oa-machines etc. Key specifications/special features: 1. Dimension case: 18.5mmx6.7mmx3.6mm (with leading wire 45mm-5mm normally) 2. Rated voltage: ac250v/125v (50/60hz) 3. Rated current: 6a/12a 4. Rated open temperature range: 45~145 degrees centigrade, in steps of 5 degrees centigrade. 5. Tolerance: (+/-)5 degrees centigrade 6. Resetting temperature: lower than rated open temperature 30(+/-)15 degrees centigrade 7. Switching cycles in: 10, 000 cycles 8. Contact arrangement: normally closed 9. Standard contact resistance: ≤50mª+ Pack information: to be informed Third party certificates: Vde ul Product sample availability policy: Free below 10 pcs samples but transport charge Order lead times(days): 7~10 days Minimum order quantity: No Dimension case: 18.5mmx6.7mmx3.6mm
