Thermal Resistance Calibration Simulator

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Thermal resistance calibration simulator is a high-performance hand-held, professional resistance me…

Productoverview:
ZW-YF-2 seriesThermal simulation instrument calibrationIs a high performance portable, with a resistance measurement and output function is very professional.You can test and calibration of temperature transmitter, temperature display instrument and the data acquisition system can directly measure the temperature and thermal resistance connected circuit.
Two, work principle:
ZW-YF-2 seriesThermal simulation instrument calibrationThe principle is that when the measured voltage by a precision resistor and a relay, programmable divider circuit is transformed into appropriate small amplitude voltage signal, the buffer amplifier, sent to the A / D devices with high precision, and the appropriate sampling rate, the instantaneous value is converted into digital signal flow.
The current is measured by high precision electronic compensating transformer built-in, namely direct access measurement, or electronic compensating transformer clamp (clamp meter), the measured current is converted to the appropriate signal amplitude small current, by sampling precision resistor is converted into voltage signal to the A / D devices with high precision. The appropriate sampling rate will be converted into digital signal instantaneous flow.Digital signal measured voltage and current to the FPGA logic circuit in transmission using photoelectric coupler to achieve electric isolation circuit under test and test system. To ensure the stability of the safety test and test data.
Three, widely used:
ZW-YF-2 seriesThermal simulation instrument calibrationIs a high performance portable, with a resistance measurement and output function is very professional.Tester can test and calibration of temperature transmitter, temperature display instrument and the data acquisition system can directly measure the temperature and thermal resistance connected circuit.
Four, main features:
1, the 28 character dot matrix LCD screen, and display three lines, line type, line *, second, third measurement data.
Measuring 2 and seven kinds of thermal resistance measurement and Simulation of current and resistance.
3, three kinds of thermal resistance mode selection.
4, low power consumption, the battery is full after more than 48 hours of continuous work.
5, constant current charging, overcharge of the battery voltage under voltage automatic shutdown and automatic protection function, ensure the battery is not due to overcharge or undervoltage and damage, long service life of battery.
6 control, single chip computer, in order to achieve high precision.
7, using imported shell, beautiful appearance, small volume, light weight.
Five, technical parameters:
1, voltage measurement range: 0~ + 1000mV: accuracy: + 0.05%;
Input impedance: 2, > 10M;
Output: 3, range: 0~ + 100mV: < 0.5 ohm impedance;
4, current measurement: 0~ + 20mA + 0.05%: accuracy of input impedance is about 5;
5, 24V DC voltage output, load 30mA;
6, size: 223*96*55.
Six, the conditions of use:
1, power: 6V Ni MH (Li ion) battery, charging, 220VAC, 5Hz;
2, temperature: 0~50 degrees (beyond the temperature range, accuracy drops);
3, humidity: 0 ~ 85%RH;
4, the environment: no corrosive gas.
Seven, the basic functional requirements:
1, work out the requirements of volume to be as small as possible, light weight as much as possible;
2, the work site does not work station, the calibrator in most cases is placed on the ground to work with;
3, on-site measurement data required to reliably store data, and can conveniently exchange;
4, if there is a need for energy measurement error, requires the tester must first be a standard electric energy meter, and should be a convenient operation, high precision, multifunctional and intelligent electric energy meter;
5, sometimes the need for site connection check this requires calibrator, you need to be able to display the vector analysis, vector diagram and wiring diagram, line identification phase, so the test instrument is a table and vector analysis software combined with standard electric energy.
Eight, temperature measurement and output:

Note: the measurement precision of the full scale is concerned+ 0.05%FS,The measurement accuracy of column"temperature range"To ensure the accuracy of the measurement range, measurement accuracy must be considered with the thermocouple accuracy. 
Nine, selection table:

Note:
1 power: the machine is equipped with a detachable 6V1300mAh high capacity Ni MH battery energy group 1, which can meet the field work for a long time.External charging power supply of imported DC12V1A switching power supply;
Working environment: 2, temperature 0~50 humidity is lower than 90%3. size: 223 * 96 * 55mm4;
3, weight: 500g;
Statement: 4, the appearance of the product in kind prevail, change the product development sometimes relates to the technical standard, and the change of the shape, without notice.

The warranty and customer service service:
ZW-YF-2 series thermal simulation instrument calibration resistance product warranty period is twelve months, life-long maintenance.The warranty period of non-human damage, free maintenance, beyond the warranty period, maintenance services for a fee and shipping fee.The first use of a new user, based on the menu function can prompt the operation, there are technical difficulties, please call our technical department to give answers. When necessary the company can send engineers to the scene to guide.