ZDCY-80 Intelligent DC Low Voltage Resistance Tester

ZDCY-80Intelligent DC Low Voltage Resistance Tester

1general narrate, recount, state

ZDCY-80Intelligent DC Low Voltage Resistance TesterComposed of an intelligent DC low resistance tester and a DC resistance testing fixture. LCD displays various parameters and measurement results. The testing fixture has a potential fixture and a current fixture. Mainly used to test the DC resistance of winding wires. This instrument also comes with a temperature sensorAnd directly display the temperature value on the display screen, with automatic temperature coefficient compensation function. The measurement result obtained is the corrected standard 20 degree sample resistance value, and the resistance value can be automatically converted into resistivity. This instrument is also randomly equipped with a standard resistance box (10 m Ω, 100 m Ω, 1 Ω). For users to test and calibrate the instrument. The test clip can be used to measure the resistance of other conductors, and the test data can be uploaded to our company's independently developed quality management system software for statistical analysis and processing of the test data.

2Main technical parameters

2.1 Measurement range: 10 μ Ω～ 20K Ω

2.2 Resolution: 1 μ Ω

2.3 Accuracy: (20 ± 5 ℃) ≤± (0.1%+3 words)

2.4. Distance between two potential fixtures: 1000 ± 1mm

2.5. The distance between the current fixture and the adjacent potential fixture is (50 ±) 1mm

2.6. Fixture blade width: 2 ± 0.2mm

2.7. Suitable sample diameter: 0-18mm

2.8. Environmental conditions for use: Temperature: 0-40 ℃ (To ensure measurement accuracy, it is recommended to use a temperature of 20 ± 5 ℃)

Relative humidity:<80%

2.9. Input power supply: AC220V ± 10% 50Hz

2.10. Dimensions: L × W × H mm 1350 × 260 × 300

2.11. Total weight of the machine: 27Kg

ZDCY-80Intelligent DC Low Voltage Resistance Tester

3Operation and usage methods

3.1. Plug in the power plug. The power socket must use a three hole power socket and follow the national electrical installation standards. The left socket N is connected to the neutral wire, the right socket L is connected to the phase wire, and the center socket must be properly connected to the grounding wire of the unit's power supply system.

3.2. The four wires led out from the bottom threading hole on the front of the instrumentrootTest cable connectionConnected to the front panel of this instrumentcorresponding Hcur、Hpot、Lpot、Lcur Four testing terminalsTighten the socket and tighten the nut.

3.3. Turn on the power switch, and the LCD screen will display:

among which“R:”To measure the resistance value, “P:”To measure the resistivity, “T:”To measure the temperature value.

pressShortcut menu key“MEAS”You can enter the settings interface, as shown below:

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“temperature compensation: Copper”Compensate according to the temperature coefficient of copperPress the adjacent soft key to change to aluminum or turn off temperature compensation

“Temperature setting”Press the adjacent soft key to correct the measured temperature value

“Electrical resistivity setting”Press the adjacent soft key to turn on or off the resistivity display functionSet the line type and external dimensions

“Measurement settings”Press the adjacent soft key to select the measurement mode as direct reading mode or comparison mode

“short circuit”Press the adjacent soft key during zeroing to reset

The "line type" can be a circular or flat line, which can be changed within the measurement settings

The "diameter" can be moved with the cursor using arrow keys and entered using numeric keys

The "Machine", "Class", "Model", and "Inspection" can be moved with the cursor using arrow keys and entered using numeric keys. They are mainly used in conjunction with our company's quality management system software

3.4 Zeroing: The randomly configured "measuring clip" is used for measuring the resistance of other objects and for "zeroing". When resetting, insert the "measuring clip" into the measuring instrument panelHcur、Hpot、Lpot、Lcur Four testing terminalsInside the socketAnd short-circuit the measuring clip according to the relevant provisions in the "Operation Manual". Press againSoft key next to 'short circuit':

The instrument automatically resets the seven measurement gears.

If the measuring clip is not properly short circuitedAfter pressing the short circuit button, the LCD screen will display:

(Tip: The test clip did not short-circuit as required)

Zeroing must be completedRemove the 'measuring clip', otherwise it will affect the accuracy of the test results. Before testing each batch of samples, the measuring instrument should be reset to zero.

3.5. Instrument settings

3.5.1 As this instrument is mainly used to measure the resistance of winding wires, it has been set to direct reading measurement before leaving the factory, which means the measurement result is 1 The resistance of a winding wire with a length of m.

3.5.2 Setting of Environmental Temperature

according toGB/T4074.5-2008 Winding wire test method 5: Resistance, regulation: Resistance is 1m at 20 ℃

DC resistance of long winding wire. When it's not thereIf measured at 20 ℃, the temperature coefficient must be corrected. This instrument automatically corrects the measured resistance value based on the temperature coefficient specified in the standard within the temperature range of 15 ℃ to 25 ℃. To ensure the accuracy of the measurement results, it is recommended to measure at an ambient temperature of 15 ℃ to 25 ℃. The resulting measurement is the corrected resistance value of the 1m long sample at the current temperature, without the need for manual correction.

3.5.3 Test conductor material setting: This instrument can detect copper (Cu) and aluminum (Al)）Set up two materials, the steps for setting up are as follows:

As shown in the above figure:“temperature compensation: Copper”Compensate according to the temperature coefficient of copperPress the adjacent soft key to change to aluminum or turn off temperature compensation

After setting up the instrumentWhen the operating environment temperature and the tested material are not changed, there is no need to perform instrument settings according to section 3.5.

Attention: Before use, the oil hole should be filled with oil④ Inject an appropriate amount of engine oil into the sample to make the handwheel rotate flexibly during straightening and avoid wear on the screw ⑦.

First, press the positions of the two fixtures on both sidesRemove the paint film of the sample clamped under the potential and current fixtures ③ on both sides.Lift up the handles of the potential and current clamps on both sides② Open the potential and current clamps.When the sample is less thanWhen 3mm, a straightening device can be used to straighten the sample;Press one end of the sample onto the left clamp of the sample straightening device① Press the other end under the right clamp ⑥. Rotate the sample straightening handwheel ⑦ clockwise to straighten the sample. Press down the potential and current clamp handles ② on both sides to clamp the test sample tightly. The instrument automatically selects the gear based on the resistance of the tested sample and displays the measurement results. Namely: Rx=****** on the LCD screen, which is the corrected DC resistance value of the one meter long test sample at the current ambient temperature.

3.7After the test is completed, the handles of the potential and current fixtures on both sides must be lifted first② Open the potential and current clamps. Then lift the left and right clamp handles of the straightening device and remove the sample. To avoid damage to the potential and current fixtures due to the tension of the sample.

3.8 Accuracy check

The measurement accuracy of this instrument has been calibrated in detail before leaving the factory, but it is possible that the measurement accuracy may decrease due to user error or data accumulation caused by long-term use. Therefore, based on the characteristic that users mainly use this instrument to measure the resistance of copper rods or winding wires, it is randomly equipped with10m Ω, 100m Ω, and 1 Ω, one 3-speed standard resistance box. After a period of use, users can use a standard resistance box to perform accuracy checks on the instrument according to the following methods.

3.8.21 Environment during Inspection

Temperature:20±1℃

Requirements for the working environment of other reference instruments.

3.8.2 Resistance accuracy inspection steps

3.8.2.1 Remove the sample measurement line from the panel and insert the testing clip.

Note: The instrument must first be turned on and preheatedMore than 15 minutes.

3.8.2.2 According to Articles 3.5.2 to 3.5.3 of this manual“temperature compensation: Copper”Set to closed state

3.8.2.3Randomly configured10 mOh.100 mOh.1Ω, three standard resistors, clamp them one by one on the measuring clamp (note: the red clamp faces in the same direction) for measurement, and record their actual measured values.

3.8.2.4 Compare the measured value with the standard resistance, and the error should be within 1%. If there is a significant deviation, please contact our company.

Non professionals are not allowed to make arbitrary settings to avoid affecting the measurement accuracy of the instrument.