Shanghai Haixin Chromatography Instrument Co., Ltd
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Automatic testing device for dielectric constant loss factor and resistivity
Automatic testing device for dielectric constant loss factor and resistivity
Product details

TDM-4000 is an automatic instrument used to measure the electrical characteristics of transformer oil, insulation liquids, and other insulation material samples. TDM-4000 can be used to measure the capacitance, dielectric constant, dielectric loss, loss factor (loss factor), resistance, and resistivity of a sample.

TDM 4000 automatic testing device for dielectric constant loss factor and resistivityDetailed information:

characteristic

The microprocessor controls the fully automatic testing sequence.

Optional manual testing sequence.

Automatically and continuously calibrate resistance measurement circuits based on two internal resistance standards.

Automatically and continuously calibrate C&DF measurements based on internal standard capacitors

Internal alternating current (AC) power supply with line frequency and sine waveform.

An internal direct current (DC) power supply that provides (+) and (-) voltages.

Windows software that can be connected to a PC.

RS232 computer interface for downloading data or controls from a PC.

Centronics parallel printer interface for directly printing test data.

Menu driven software operation.

Can store up to 100 test results.

Measure resistivity using (+) or (-) voltage.

Open circuit grounding and interlock protection to ensure the safety of instruments and operators.

advantage

Eliminating manual balancing and reducing operator errors.

Reduced the time required for each test sample.

Provide high repeatability.

Provide printing, storage, or export of test data.

specifications

Dielectric constant and loss factor

testing voltage: 0-2400 V AC, with a step value of 1 volt for line frequency.

Accuracy: ± 1% of output

capacitance: 0 - 200 …. 1600 pF

Accuracy: ± 0.1% of reading ± 0.1pF

Maximum resolution: 0.01 pF

dielectric constantWhen using a typical oil testing unit (C=~70pF), it ranges from 1 to 20

Accuracy: ± 0.1%

resolving power: zero point zero zero one

Dissipation Factor(DF): 0 - 1.000

Accuracy: ± 1% of reading ± 0.0001

Maximum resolution: 0.00001 (10-5)

Dielectric loss0-10.00 watts

Accuracy: ± 1% of reading ± (10-5)

Maximum resolution: 0.001 milliwatts (10-6 watts)

cell constantAcceptable for any unit; The performance of oil testing units with 50-70 pF is optimal.

resistance-resistivity

testing voltage: 100-1000 V DC, with a step value of 1 volt

Accuracy: ± 1% of the set value

Resistance Range: 106 to 1012 Ohms

Resolution: 3 digits

Accuracy: up to ± 2% of 1G Ω readings, with high-end increased to ± 10%.

resistivity: The typical test unit for 1000 cm is 109 to 1015 Ω - cm.

Resolution: 3 digits.

Accuracy: ± 2% of the reading at 109-1013 Ω - cm

± 5% of reading at 1013-1014 Ω - cm

± 10% of the reading when it exceeds 1014 Ω - cm

measure

Manual measurement: Individual and continuous measurements of C, DF, and resistivity can be taken at a selected voltage.

Automatic measurement: The testing device automatically performs a set of C, DF, and resistivity measurements and displays the measurement results.

Display screen: 240x128 dot matrix LCD panel with backlight

Keyboard: A 20 key keyboard that provides numerical and soft function input.

output

RS-232 serial port: suitable for controlling instruments through a PC and for outputting data to a PC through an optically isolated serial port.

Centronics port: an optoelectronic isolated parallel port that can be connected to Centronics compatible printers.

Data storage: Capacity - can store up to 100 test results.

joint

Test voltage (HV): Amphenol MVH connector

Measurement terminal (LV): BNC connector

Grounding (GND): BTI-30 terminal

Security interlock (INTLK): 3-pin audio connector

Power connector: IEC three terminal socket

power supply180-260 volts, 50Hz, 60VA or

90-130 volts, 60Hz, 50VA

physical property

Size: Approximately 480 x 178 x 450 millimeters

Weight: Approximately 18 kilograms

Temperature range: -10 to 50OC

Humidity: 90% of ambient humidity, relative humidity

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