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product name：ST2921B Proton Exchange Membrane Fuel Cell Bipolar Plate Resistance Tester
1、 Structural features
2、 Overview
2.1 Basic functions
The ST2921B proton exchange membrane fuel cell bipolar plate resistance testing system is a professional integrated measuring instrument that uses the principles of four terminal method and four probe method to test the electrical resistivity, bulk resistance, contact resistance, and other parameters of proton exchange membrane fuel cell (PEMFC) bipolar plates, carbon paper, and components.
2.2 Adopting Major National Standards
GBT20042.6-2011 Proton Exchange Membrane Fuel Cells - Part 6: Test Methods for Bipolar Plate Characteristics, GBT 20042.7-2014 Proton Exchange Membrane Fuel Cells - Part 7: Test Methods for Charcoal Paper Characteristics, and GBT 1552-1995: Direct Four Probe Method for Determining the Resistivity of Silicon and Germanium Single Crystals.
2.2 Complete system composition:
The main units of the testing system include: measurement and control host and color LCD display screen, automatic pressure control console, automatic thickness dial gauge, four terminal gold plated electrode, four probe testing platform and four probe probe, as well as supporting PC measurement and control software.
2.3 Advantages and characteristics:
a. The measurement and control mode conforms to national standards, with scientific, reasonable and high accuracy.
Comply with GBT20042.6-2011 Proton Exchange Membrane Fuel Cells - Part 6: Test Methods for Bipolar Plate Characteristics, GBT 20042.7-2014 Proton Exchange Membrane Fuel Cells - Part 7: Test Methods for Charcoal Paper Characteristics, and GBT 1552-1995 Direct Four Probe Method for Determining the Resistivity of Silicon and Germanium Single Crystals.
b. One machine with multiple functions, professional and efficient.
In a system, the four probe method completes horizontal resistivity testing, while the four terminal method completes vertical resistance, resistivity, and contact resistance testing.
The important units of the system include: carbon paper thickness uniformity test, electrode comprehensive vertical surface resistivity test, carbon paper plane resistivity test, carbon paper vertical resistivity test, bipolar plate body resistivity test, bipolar plate carbon paper contact resistance test, etc., which are professionally integrated and cost-effective.
c. Fully automatic continuous stepped multi pressure point continuous testing mode. Intelligent fitting of "resistivity pressure" curve, "resistance pressure" curve, and "contact resistance pressure" curve. Good repeatability, simplicity and efficiency.
Replacing single point representation with complete curves and data lists is more intuitive and comprehensive.
Overcoming the drawbacks of fatigue and poor consistency in manual pressure application mode, improving work efficiency and testing accuracy.
d. The color screen displays multiple parameters on the same screen: resistivity, resistance, contact resistance, pressure, height, etc.
Overcoming the limitations of digital LED displays that cannot display multiple contents synchronously.
e. Multi mode selection for human-machine dialogue measurement and control, simple and efficient.
Single machine mode, all parameter settings and function conversion of the instrument are displayed using touch buttons and color screens,
Online mode, with supporting PC software, providing complete and convenient functions such as parameter setting interface, measurement and control interface, and online help interface. Used to achieve measurement and control functions for instruments on the PC, as well as functions such as data viewing, editing, saving, printing, and historical query.
f. The instrument has height and pressure self calibration functions, ensuring that the client maintains high-precision measurement and control effects for a long time.
2.4 Applicable scenarios
This instrument is suitable for testing the electrical resistivity, bulk resistance, contact resistance, and other parameters of proton exchange membrane fuel cell bipolar plate materials and components. Widely used in higher education institutions, research institutes, measurement units, industrial and mining enterprises related to fuel cell bipolar plates, it is an important and excellent tool for testing and analyzing the resistance parameters of fuel cell bipolar plates.
3、 Technical parameters
3.1 Characteristic parameters of measurable samples
a. Types of measurable samples: bipolar plate materials (graphite or metal), diffusion layer materials (fuel cell specific carbon paper, etc.), bipolar plate components!
b. Measurable impedance range:
Measurable resistivity range: 20.00 × 10-6~200.00 × 103 Ω * cm, resolution: 1.0 × 10-6~0.01 × 103 Ω * cm.
Measurable resistance range: 20.00 × 10-6~200.00 × 103 Ω, resolution: 1.0 × 10-6~0.01 × 103 Ω.
Measurable contact resistance range: 20.00 × 10-6~200.00 × 103 Ω * cm2, resolution: 1.0 × 10~6-0.01 × 103 Ω * cm2.
c. Recommended electrode selection, sample size, and pressure range: Table 3.1 below.
Table 3.1 Recommended Table for Four Terminal Electrode Selection, Sample Size, and Pressure Range
Serial number
Electrode model
ST2921-SD50
ST2921-SD30
1
Electrode Type
Four terminal electrode
Four terminal electrode
2
Circular cross-section (cm2)/diameter (mm)
50/φ80
30/φ62
3
Measurable sample cross-section (mm)
φ 80 inner circle or rectangle
Φ 62 inner circle or rectangle
4
Measurable sample thickness (≤ cm)
2.0
2.0
5
Measurable pressure range (MPa)
0 ～ 4.0
0 ～ 4.0
6
Selection reference
National standard recommended type
National standard protocol type
3.2 Test condition parameters can be provided
(Circle diameter or rectangular side length)
Including 5cmX5cm square
Including 2.1cmX2.1cm square
a. Eight level constant current source: 0.1uA, 1.0uA, 10uA, 100uA, 1.0mA, 10mA, 100mA, 1.0A. Accuracy ± 0.1%.
Voltmeter: 20mV~2.0V automatic range, accuracy ± 0.1%.
b. The electrode selection and pressure condition recommendation system provides a rated pressure of 10000N (1000KG), with a recommended cross-section of 25cm2 as the column. The optional pressure range is 0-4MPa, which is related to the electrode and sample cross-section. Please refer to Table 3.1 for details
3.3 Single machine mode data representation form and accuracy level parameters
a. Real time synchronous display: resistivity ρ、 Resistance R, contact resistance, accuracy ± 0.3%, Scientific notation of "5 significant digits+order of magnitude units".
b. Real time synchronous display: pressure P, thickness W, accuracy ± 0.2%, 4 significant digits.
c. Real time synchronous display: Test the direction of current magnitude.
3.4 Online mode data representation form and accuracy level parameters
a. The software measurement and control interface and instrument color screen display relevant content in real-time synchronization.
b. After the test is completed, a test report can be printed, which includes "Resistivity ρ- Pressure Pa "form and curve, resistance Rp pressure Pa" form and curve, contact resistance Rj pressure Pa "form and curve.
3.5 Instrument dimensions and weight parameters
a. External dimensions: long × wide × Height=33cm × 30cm × 47cm
b. Weight: 20Kg
3.6 Instrument Power Configuration Parameters
a. Power supply: voltage U=220V ± 10V, frequency f=50Hz ± 5Hz
b. Power: P<200W, fuse specification 250V1.0A
3.7 Instrument usage environment and storage methods
a. Temperature: T=0-40 ℃, relative humidity: RH ≤ 60%
b. There should be no strong electromagnetic interference in the studio and no shared power supply with high-frequency equipment.
4.0 Customer Service Hotline
For more services, please scan the WeChat code, follow or search the WeChat official account "lattice four probes".
There are more operation videos and online customer service for you in the official account! Customer service hotline: 400-635-7098
Company Name: Suzhou Jingge Electronics Co., Ltd
Address: Room 202, Building 20, No. 199, Xiarong Street, East the Taihu Lake Ecological Tourism Resort (the Taihu Lake New Town), Wujiang District, Suzhou
MailCompilation：215200
Contacts ：Grace
Phone：+8618762109211
Mailbox：zhengjingjing@szjgdz888.com
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