Electrical Instruments

JCDY-021 SERIES TRANSFORMER OIL DIELECTRIC STRENGTH TESTER is specially designed for testing the breakdown voltage of transformer oil and other kinds of insulating oils. Breakdown voltage testing of insulating oils can help to assess the condition of these oils within electrical equipment, such as transformers, capacitors, switches, etc. Based on the test results, the oil can be identified as aged due to an increase in water content, sludge, or if the oil has oxidized. FUNCTIONS & FEATURES: 1. High accuracy, long service life. 2. The test process is fully in compliance with the requirements of IEC 60156. 3. User-defined test. 4. Proof test. 5. The test process and result is displayed in real time on the LCD screen. 6. All parameters of the test process can be set. 7. The built-in EEPROM memory can save up to 100 groups of test data and results. 8. The built-in micro-printer can print the test results at any time. 9. All the human-machine interaction operations can be completed by rotating the mouse. 10. RS232 interface, upload test data to computer and make Word format test report. 11. Calibration interface available. 12. The tester is easy to operate, powerful, stable and reliable, and it has an excellent anti-interference ability.

Minimum Order: 1 bags

JSCP-405 Series High Performance CT PT Comprehensive Analyzer is used to measure all kinds of current transformer and voltage transformer. It can calculate the ratio errors and phase angle errors of current transformer and voltage transformer at rated burden and working burden in one-time test. The tester can automatically evaluate the test results according to the selected standard to determine whether the transformer is qualified. TESTS FOR CURRENT TRANSFORMER 1. Excitation curve and parameters test 2. Turns ratio test 3. Ratio and phase error test 4. Polarity mark check 5. Winding resistance measurement 6. Secondary loop burden measurement 7. Error line curve test for protection CT 8. Transient CT parameters test 9. CT nameplate guess 10. Saturation hysteresis loop curve measurement TESTS FOR VOLTAGE TRANSFORMER 1. Turns ratio test 2. Ratio error and phase angle error test 3. Polarity test 4. Secondary burden test 5. Winding resistance test

Minimum Order: 1 bags

KEY FEATURES: 1. 8 test options, including IEC-60156, IS6792, BS5874, ASTM D877, ASTM D1816 2. 7 inches colorful LCD touch screen. 3. All the selection can be finished on touch screen. 4. Oil temperature measurement. 5. RS232 interface. TECHNICAL INDEX: 1. Voltage OEM for clients 2. AC220V±10% power supply input, or OEM for clients 3. Output voltage: 0 – 100KV 4. Rate of voltage rise: 0.5kv/s±10%, 2kv/s±5%, 3kv/s±5%, 5kv/s±5% 5. Max test times: 9 6. Init wait times: 0 - 999s 7. Stir time: 0 - 999s 8. Wait time: 0 - 999s 9. Measurement accuracy: ± (1% of full scale + 2 digits) Resolution: 0.1KV 10. Temperature measurement: 11. Measurement range: 0°C to 70°C, or better 12. Temperature resolution: 1°C, or better 13. Operating temperature: up to 45°C 14. Storage: 100 groups 15. 7 inch colorful LCD with touch pad 16. Oil test vessel temperature measurement unit 17. All the selection can be done by touch panel with color LCD screen.

Minimum Order: 1 bags

1. TTR Measurement Range: 0.8~10000. 2. High Measurement Speed: three-phase test can be completed within 40 seconds. 3. Measurement Accuracy: Voltage measurement accuracy on HV side: 0.05% Voltage measurement accuracy on LV side: 0.1% Phase angle measurement accuracy: 0.1° TTR measurement accuracy: 0.1% (0.8－3000) / 0.2% (3000－10000) 4. Volume: 260MM×160MM×60MM 5. Weight: 3KG

Minimum Order: 1 bags

Introduction: JUNSUN's ZLDZ-10A Winding Resistance Tester has five current positions of 20mA, 200mA, 2A, 5A, 10A. It is a ideal tester for testing various resistances especially the sensibility equipment. Main Features: 1. The tester has a large output power, and the power of the tester itself is very little. 2. Using a four-wire method, the tester is quick, stable, high precision for testing the winding resistance. 3. It has a strong ability for anti-jamming, over current, over voltage and discharge. 4. The security is also very high. Specifications: 1. Resistance precision：±（0.2％RGD+2d） 2. Test range： 1.000Ω-1000Ω(20mA) 100.0mΩ-100.0 , Ω (200mA) 10.00mΩ-10.00Ω (2A) 4.000mΩ-4.000Ω (5A) 2.000mΩ-2.000Ω (10A) 3. The least scale：1uΩ 4. Output current precision:±5% 5. Support for data uploading to PC 6. Two hundred groups of data can be stored 7. With thermal printer to print the test data 8. Weight:10KG 9. Power supply：AC220V±10%，(50±1)HZ 10. Operation condition：-10～50℃ Humidity <90％ no condensation

Minimum Order: 1 bags

The GF1000 series multi-positions single phase kWh meter test bench can measure mechanical meters, electronic mechanical meters and electricity meter error by the way of automatic, semi-automatic or manual operation.It composes of single phase programmable power source, high precision single phase reference energy meter, meter suspension test rack, FEATURES: 1．With auto PC control software; 2．With barcode scanning function optional; 3．Meter positions can be chosen from 3 - 48; 4．Self-check and perfect protection function; 5．High resolution of voltage, current and power;

Minimum Order: 1 bags

GF312B2 portable three phase reference meter high accuracy 0.02%, with all kinds of optional clamp on ct and smart optical sampler. It can be applied in electrical laboratory or on site. it will be ensured by a combination of measures such as the use of 24bit A/D converter. APPLICATION: 1．Power plant; 2．Electrical laboratory; 3．Energy meter R & D; 4．Watt-hour meter factory; 5．Metrological service center; 6．Electricity power bureau & power company;

Minimum Order: 1 bags

GF312D1 is a handheld three-phase electricity meter calibrator.It mainly used on site. It has portable design and it can work 10 hours continuously when use Li- polymer battery. Features: 1.accuracy：0.05%，0.1% , ，0.2% 2.Portable design 3.Three power supply modes 4.Protection level: IP51 5.Weight:10.6

Minimum Order: 1 bags

Product Description 5V HVAC Pressure Sensor 5V Power Supply HVAC Pressure Sensor Pump Pressure Sensor Valve Pressure Sensor Applicable media Liquid, gas, steam Pressure range 0-10bar, 0-20bar Cell Ceramic capacitive pressure sensor Pressure measurement Gauge pressure, sealing pressure, absolute pressure Output 0.5-4.5VDC Power supply 5V Accuracy(linearity, hysteresis and repeatability) 1%F.S. Work temperature -20~70ºC Ambient temp -40~110ºC Temperature drift(zero) ±0.15% F.S. (-20~70ºC) Temperature drift(full range) ±0.15% F.S. (-20~70ºC) Electrical connection G1/4 Mechanical connection Parkard Housing material SS304 5V HVAC Pressure Sensor 0 5V HVAC Pressure Sensor 2

SHANGHAI CHENZHU INSTRUMENT CO., LTD. is a very established provider that specialises in automation and safety. We have over 24 years of experience in the design and manufacture of intrinsic barrier, signal conditioner, surge protection device, safety relay, power transmitter and intrinsically safe temperature transmitter. Our products and solutions cover many areas--from process automation safety to factory automation. CHENZHU temperature transmitter manufacturer a large range of head-mounted temperature transmitters. Temperature transmitter working transforms the temperature into an electrical signal no matter how tiny the amount of the signal might be. CHENZHU provides RTD input, TC input and RTD/TC input temperature transmitters. Based on the safety and automation system, temperature transmitters play an important role in the industrial field. CZWB Differential Temperature Transmitter The CZWB series is an intelligent temperature transmitter designed specifically for industrial complexity. This product is mainly installed in the head of the temperature sensor, the sensor is upgraded to an integrated temperature transmitter, to achieve the temperature of the field display and data transmission. RTD TC Temperature Transmitter Intrinsically Safe Temperature Transmitter FAQ of Temperature Transmitter What is temperature transmitter?- The temperature transmitter used RTD/TC as thermometers to temperature convert temperature variables into instruments that can transmit standardized output signals. Typically, a temperature transmitter sends or transmits a standardized output signal to a control device. Common electrical output signals are 4-20mA or 0-10V DC range in manufacturing plants. What is the difference between a temperature sensor and a temperature transmitter? We provide kinds of temperature sensor and transmitter, include thermistor temperature transmitter.

Minimum Order: 200000

SHANGHAI CHENZHU INSTRUMENT CO., LTD., signal isolator suppliers, is a very established provider that specialises in automation and safety. We have over 24 years of experience in the design and manufacture of intrinsic barrier, signal conditioner, surge protection device, safety relay, signal conditioning isolation, digital signal isolator, power transmitter and intrinsically safe temperature transmitter. Our products and solutions cover many areas--from process automation safety to factory automation. Signal conditioner is used in industrial process control systems. It connects industrial field instruments and control systems to complete the function of signal matching and conversion. Through reliable isolation technology, it resists various interference attacks and ensures the stability of the system and instruments in a complex electromagnetic environment. The Signal conditioner of Chenzhu using special design achieves anti-interference among power supply, input, and output. At the same time, it has a strong EMC performance that can work normally even under strong interference. So far, our signal conditioner, as a member of the whole safety automation system, has been applied to tens of thousands of industrial sites. And the stability of the control system escort, possessing the most complete models, has reached the international level. CZ2000 Series Signal Conditioner CZ2000 range signal conditioners use high-efficiency electromagnetic isolation technology to achieve reliable galvanic isolation among power supply，input， and output, which effectively solves the problem of field interference in industrial automation control systems. This ensures a stable and reliable operation of the system. CZ2000 Analogue Signal Conditioner CZ2000 Analogue Signal Conditioner Loop Power CZ2000 Temperature Converter Signal Conditioner CZ2000 Voltage/Current Input Signal Conditioner CZ3000 Series Signal Conditioner CZ3000 range signal conditioners are electrical devices, which are connected between the industrial field instrument and the control room. They effectively solve the field interference of industrial automation control systems and ensure stable and reliable operation of the system through reliable galvanic isolation among the power supply, input, and output. CZ3000 Analogue Signal Conditioner CZ3000 Analogue Signal Conditioner Loop Power CZ3000 Temperature Converter Signal Conditioner CZ3000 Pulse Input Signal Conditioner CZ3000 Frequency Converter Signal Conditioner CZ3500 Series Bus powered Signal Conditioner CZ3500 range rail-powered signal conditioners are high-performance products. The new design concept and technology are perfectly combined to achieve various performance characteristics, such as high-precision, small-volume, easy installation and high interference suppression, ensuring more convenient system integration and more reliable operation. What is the difference between 2-wire transmitter, 3-wire transmitter and 4- wire transmitter? 2-wire transmitter 2-wire transmitters are the simplest and most economical way to used them in the industrial field. The zero-end current is 4mA, which is sufficient to drive the transmitter's internal circuitry, while the current at 4-20mA represents the range of process transmissions measured. 3-wire transmitter Some transmitter require more power than the signal loop can supply their internal circuity. The three-wire current output can share a ground wire with the power supply, saving a wire. 4-wire transmitter Four-wire transmitters have their own internal power supply, and they do not need to be connected to a DC power supply. It has two power cords and two current output lines. The output of a 4-wire transmitter is usually a current signal. We provide kinds of isolated signal conditioner, include pt100 signal conditioner, universal signal conditioner, 24v to 5v signal converter, 5v to 24v plc signal converter and so on.

Minimum Order: 200000

SHANGHAI CHENZHU INSTRUMENT CO., LTD. is a very established provider that specialises in automation safety. We have over 24 years of experience in the design and manufacture of intrinsic barrier, signal conditioner, surge protection device, safety relay, power transmitter, carrier current transmitter, high power transmitter, low power transmitter and temperature transmitter. Our products and solutions cover many areas--from process automation safety to factory automation. Power transmitter can transfer complicated current like 0~1A/0~5A/0~10A into industry-standard output, adopting the true RMS detection technology. We offer DC supply (True RMS) or AC supply for your choice. Power transmitter can be used in the detection of the non-sinusoidal current signal, such as switching mode power supply, thyristor output current, etc. The product needs an independent 24V power supply. Input, output, and power supply are each galvanically isolated. Dielectric strength between input side and power, the output is 4kV. The product adopts DIN35mm rail mounting, compact and convenient for installation on site. All in all, the transmitter has the good character of automation and safety, just like other interface products created by Chenzhu. CZDL Series AC/DC Current/Voltage Transmitter Power transmitter adopts the true RMS detection technology, can transfer complicated current like 0~1A/0~5A/0~10A into industry standard output. We offer DC supply (True RMS) or AC supply for your choice. The product can be used in the detection of the non-sinusoidal current signal, such as switching mode power supply, thyristor output current, etc. FAQ of Power Transmitter What is a power transmitter?- A power transmitter is a measuring instrument that converts the measured power( AC voltage, AC current, reactive power, reactive energy, frequency, phase, power factor, DC voltage, DC current, etc.) into a linear proportional DC current or voltage output( electrical pulse output). It is widely used in electric power, petroleum, coal, metallurgy, railways and other departments of electrical measurement, automatic control and scheduling systems.

Minimum Order: 200000

CTL500 swing out rotors low speed centrifuge for 1.5-50ml tubes Microprocessor controlled and DC brshless motor drived. LED digital display. Automatic calculation for RCF and you can control run by RCF. Special damper for automatic balancing function. Electric lik lock system for operational safety. Various stainless steel racks for easy replacement. Remaining time is displayed in seconds when it is less than 1 minutes. Specifications Small Low Speed Universal Centrifuge, without rotor Model CTL500 Max.Speed (r/min) 5000 Max. RCF (x g) 4030 Max. Capacity (ml) 240 Control Microprocessor Drive DC Brushless Motor Speed Range (r/min) 100-5000 Speed Control Accuracy (r/min) ±30 Timer Range(min) 1-99 Noise (dB) ≤ 60 Power Supply V (Hz) 220/110 (50/60), 5A, single phase Dim. (W x D x H) mm 355 x 485 x 285 Weight (kg) 22 Rotors Rotor Type Rotor No. Max. Capacity (place x ml) Max. Speed (rpm) Max. RCF (x g) Tube Size (Range, ml) Adapters for smaller tubes Fixed Angle Rotor 1 24 x 10 5000 4030 5-15 Available Swing-out Rotor with tube holders 2 4 x 50 4200 2760 5-20 Available 4 x 4 x 15 4200 2760 5-15 Available 4 x 6 x 5 4200 2760 5 Unavailable Swing-out Rotor with tube holders 3 4 x 100 4000 2500 1.5-100 Available

PRODUCT DESCRIPTION Wholesale GPR111 Red Color Single Tilt Surveying Reflector Prism with Target for Leica Total Stations Model: GPR111 Specifications Prism Constant Range Centering Accuracy 0mm 2500m 2.0mm Features Plastic frame. Leica type of connector (no threads). Does not have a 5/8 x11 thread. Single tilt prism with soft bag Circular prism sealed in red polymer holder. Large integrated target plate provides good visibility. Optical Surveying Reflector Prism Applications Surveying reflector prisms are used by surveyors and engineers to measure the change in position of a target that is assumed to be moving. Survey prisms are used for a wide range of monitoring applications including: Rail Monitoring Settlement Monitoring Displacement Monitoring Deformation Monitoring Convergence Monitoring Optical Surveying Reflector Prism Installation Monitoring prisms should be installed using the following guidelines: Attached to a rigid structure that is sufficiently stiff as to not move through a single monitoring cycle Located to minimize the effects of temperature and radiant heat on a target Installed with clear sight lines back to the total station Avoid sight lines that require shooting through a fence or another mesh Avoid sight lines shooting just past corners which can cause refraction Avoid sight lines that include a source of heat that can cause a heat shimmer GPR111 Surveying Reflector Prism 0 GPR111 Surveying Reflector Prism 1