YH-DCW Technical Overview

一、Technical Performance Parameters

15.Working modes: conventional working mode of the acquisition instrument support, 24-hour continuous sampling working mode, and automatic triggering monitoring working mode.

1.Allowed Installation method:Indoor, Test Chamber, Buried or Underwater Installation

2.Applicable temperature range: -40℃~+55℃

16.Anti communication interference capability:<30V.

3.When there is strong vibration and impact, remote communication may not be possible.

17.Remote control: Through the supporting system software, the working mode and parameters of the acquisition instrument, such as sampling time and continuous sampling time, can be adjusted.

4.Power on potential sampling

Sampling range: ±3V, ±30V, ±100V, automatic range switching.

Sampling error: within the range of ±3V,<±5mV; Other range, ≤1%.

18.Power supply methods: disposable batteries, solar cells, rechargeable batteries.

19.Collector power consumption:

Battery output current in standby mode ≤10μA.

5.Power off potential sampling

Sampling range: -3.000V~+3.000V.

Sampling error:<±10mV

20.In case of communication abnormalities, it can store operating data for more than six months to ensure that test data is not lost. When communication is restored, data can be automatically uploaded.

6.Open Current Potential sampling

Sampling range: -3.000V~+3.000V.

Sampling error:<± 5mV

21.Device Clock

Equipped with GPS and automatic timing. In GPS timing mode, the device clock error is less than 20ms.

Equipped with a clock, the clock error is less than 5 seconds every 24 hours.

7.AC power sampling (AC stray current interference voltage)

Sampling range: 0V-10V, 0V-30V, 0V-100V, automatic range switching.

Sampling error: ≤ 5%.

22.Wireless remote upgrade: The embedded control program inside the collection bit can be upgraded remotely through wireless transmission.

8.Sampling of AC current flowing through the test piece (AC current density)

Sampling range: 0-10mA, 0-100mA, automatic range switching

Sampling error: ≤1%. Resolution: 10μA. Current sampling resistance: ≤10Ω.

二、Safety Performance Parameters

1.The printed circuit board of the data acquisition instrument adopts measures such as moisture-proof, salt spray proof, and bacteria proof to meet the requirements for buried use.

9.Sampling of DC current flowing through the test piece (DC current density)

Sampling range: ± 1mA, ± 20mA, automatic range switching.

Sampling error: ≤ 1%. Resolution: 1 μA.

Current sampling resistance: ≤ 10Ω.

2.Insulation resistance: The insulation resistance between the reference line and the shell, and between the zero position line and the shell is greater than 10M Ω.

3.Anti AC interference: With filtering function, it can work normally in AC interference voltage environments below 30V, and the accuracy of potential acquisition meets the requirements.

10. Corrosion rate resistance sampling

Sampling range: 10~80mΩ.

Resolution: 0.01mΩ.

Sampling error: 2%.

4.Dielectric strength: The collector can withstand a dielectric strength test voltage of 1500V for 1 minute without breakdown or flashover.

5.The ground potential input terminal of the acquisition instrument can withstand 15kV instantaneous (20us) DC high voltage and work normally.

11.Communication method: Supports 2G/3G/4G communication and Ethernet communication.

6.Lightning protection performance: The data acquisition device can meet the lightning protection requirements of Class 4 installation category in GB/T3482, Class 4, GB/T17626.5, with a nominal discharge current greater than 60kA.

12.Reference input impedance:>10MΩ.

13.Current flowing through the reference electrode:<3μA

7.Explosion proof performance: The data acquisition device installed in the explosion-proof area has a package installation kit, and the explosion-proof level of the explosion-proof installation kit meets the technical requirements of GB 3836.

14.Power outage test delay sampling time: Supports power outage test data collection, with a minimum collection delay time of 30-999ms.

8.The protection level of the casing meets the requirements of IP68 in GB4208.