Product introduction

1.  BD400H is a second-generation resistivity testing instrument that is independently designed and produced by Xi'an HongHu Testing Instrument Co., Ltd., which has the entire intellectrual property of the instrument. It replaces the 20-year old model of DB-4.

2.  The system is composed by high-precision constant current power supply, high-precision voltmeter, and embbeded smart management system.

3.  The system uses 192*64 resolution LCD screen to display testing process and parameters. The operation procedure is simple and concise, with testing information clearly showing up in the display.

4.  We provide custom-made service according to customers' specific needs. We accept OEM order from customers as well.

5.  We provide custom-made service to produce testing fixture according to customers' specific needs.

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1. 192*64 resolution LCD display.
   

2. Can input material thickness, and the system can automatically provide the testing result of resistivity.

3. Automatically display testing procedure, and show the result of forward voltage and reverse voltage.

4. Directly display tested resistivity value.

5. Automatically save testing parameters: system current output, voltage range, etc.

6. The system can automatically memorize the parameters used by a customer before, such as current output, voltage range, even material thickness, until they are changed by the customer.
   

Technical parameter

Main technical standards:

1. Testing range: 10^-4—10⁵Ω with resolution of 10^-6.

2. Digital voltmeter range and current output option:

    i. Voltmeter range: 2 mV, 20 mV, 200 mV, 2V

    ii. Current output option: 1uA, 10uA,100uA,1mA,10mA,100mA.

3. Testing (voltage display) precision and stability:

    i. Service voltage range 20mV -- 2V and service current output option of 10uA -- 100mA:  ±(0.1% digit +6 characters)

    ii. Service voltage range 2mV and service current output option of 1uA： ±(0.25% digit +8 characters)

    iii. Display: 4½ digits displaying 0 -- 1.9999 and the corresponding unit. Tested voltage value has the resolution of 0.1uV. 

4. Testing electrode:

    i. Current electrode: the length of current electrode is 50mm, contact testing model with an area that has the width of 5mm, the distance between two current electrodes is 100±1mm.

    ii. Potential electrode: the length of potential electrode is 50mm, contact testing model with an area that has the radius R<0.5mm, the distance between two potential electrodes is 20mm±2%.

    iii. Pressue of potential electrode: the pressure along the edge of testing model is > 65N/m.

5.  Power supply: 220±10%   50HZ or 60HZ with power consumption < 50W

6.  Dimension:

    i. Testing instrument outer dimension: 365mm*345mm*110mm

    ii. Testing frame outer dimension: 220mm*150mm*220mm