Surface Resistivity
See Also: ESD, Ground Resistance
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Single-Phase Transformer Winding Resistance Meters
RMO-TW Series
RMO-TW series is perfect for winding resistance measurements of inductive objects. It is ideal for testing transformer windings (power transformers, distribution, autotransformers) and for on-load tap changer verification. In addition, any RMO-TW transformer ohmmeter & tap changer analyzer can also perform transformer demagnetization.The series contains 4 models, with maximal test currents from 10 A (RMO10TW) to 50 A (RMO50TW). They are fitted in a portable and lightweight metal housing.All transformer ohmmeters from RMO-TW series generate a true DC ripple-free current with automatically regulated measurement and discharging circuit. The injection of current and discharge of energy from the test object are automatically regulated.Three independent channels enable testing of three windings in series. Consequently, this enables measurements of winding resistance in every tap position of an on-load tap changer without discharging between the tests.DV-Win software enables control and observation of the test process, as well as saving and analyzing the results on a PC. It provides a test report, arranged in a selectable form as an Excel spreadsheet, PDF, Word, or ASCII format. Additionally, DV-Win measures and calculates the OLTC transition time, the ripple and the winding resistance for each tap changing operation. The software can also perform the calculations necessary for the “Heat Run” test. Finally, a user can export all results in the form of a report.
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Handheld Digital Multimeter, AC/DC Voltage, Continuity, Diode, Resistance, Temperature, 3.5, 2000
72-13435
*Clear LCD Display*Equipped with comfortable protective cover, test probe holder*2m drop test, precision protection*Auto Power Off*Auto Backlight Off*Loud Buzzer Sound*Knobs shift smoothly, in-line with ergonomics*Powered by AAA 1.5V x 2 batteries*12-month limited warranty *view Terms & Conditions for details
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Insulation Resistance Meter
AMIC-5005
Insulation resistance measurement - 15TΩ: * 50 - 1000 V, in 10 V steps, * 1000 - 5000 V, in 25 V steps ; Memory of 999 results and transmission to PC ; Measurement of AC and DC voltage and capacity ; Measurement of leakage current ;Function with digital filter
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Surface Profile
Surface profile: The degree of profile on the surface affects a coating’s overall performance and determines aspects such as adhesion, coverage and overall volume of coatings used. If the profile is too large the amount of coating required increases, otherwise there is a danger that the peaks remain uncoated - allowing rust spots to occur. If the profile is too small there may be an insufficient key for adequate adhesion.
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19" Drawer with Writing Surface, Unshielded, 3.5"H x 24"D
DR-031924-S
Unshielded drawers with writing surface are constructed of 20 ga. CRS and are furnished with ball bearing chassis slides to provide smooth operation. Available for 19" and 24" rackmount in 20", 24" and 30" depths, with or without a keylock
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19" Drawer with Writing Surface, Unshielded, 8.75"H x 30"D
DR-081930-S
Unshielded drawers with writing surface are constructed of 20 ga. CRS and are furnished with ball bearing chassis slides to provide smooth operation. Available for 19" and 24" rackmount in 20", 24" and 30" depths, with or without a keylock
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Handheld Turns Ratio & Winding Resistance Tester
TWR-H Series
Handheld TWR-H device is DV Power single-phase instrument designed for measuring transformer winding resistance and turns ratio.The instrument has two output DC sources for measuring transformer winding resistance. The first DC source can output up to 2 A DC and is used for injecting current to the transformer’s high voltage winding. The second DC source can output up to 10 A DC and is used for testing the transformer’s low voltage winding. This is especially useful when measuring winding resistance of distribution transformers. These transformers have large turns ratio and therefore a big difference between resistances of high voltage and low voltage windings. Upon the winding resistance test, it is also possible to demagnetize the transformer core. The demagnetization process is completely automatic and safe.Together with the turns ratio, the instrument also measures excitation current and phase shift. This enables detecting transformer core or winding turns failures which cannot be spotted by measuring turns ratio only. The instrument can output test voltage up to 40 V AC for this test, but it can also output a very low test voltage of 1 V AC which is necessary for turns ratio verification of the majority of current transformers.TWR-H is powered by an internal Li-Ion battery. Up to 100 tests can be performed with a fully charged battery.
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BET Flowing Gas Surface Area Analyzers
SA-9600 Series
The surface area of a material is, in many cases, as important as the chemical properties. As particle size decreases, surface area increases. Porosity of materials - from micropores to macropores - contribute even more to the total surface area. The interface at the surface is what defines how a solid reacts to other substances, be they gases, liquids, or solids.Surface area can impact shelf life, stability, dissolution and efficacy of pharmaceutical powders and tablets. Likewise, surface area can affect the rheological properties and hiding powers of pigments, paints, and coatings. It has a significant impact on the ability for materials like catalysts, adsorbents, filtration materials and air separation products to react in the designed application. Ceramics used in applications ranging from; dinner plates, to dental implants, to electronics, all are affected by surface area.
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Flood Modeling for River, Surface Water, and Urban Drainage Systems
Digital OneWater Flood Modeller
Flood Modeller, a Digital OneWater solution, is an industry-leading software platform which enables engineers and scientists to deliver faster and more accurate results by simplifying the modeling of river, surface water, and urban drainage systems. It enables you to confidently understand flood risk and develop optimal solutions to manage the impacts of climate change.
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Insulation Resistance Tester
250-1000V
Wuhan Fanke Transformer Manufacture Co., LTD
Professional Insulation Resistance Tester, 250-1000V
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DC Resistive Load Banks
LB-Series
Eagle Eye offers multiple DC Load Banks ranging from 10 480 VDC at 1 amp or 5 amp Resolution. These load banks offer a simplistic solution to UPS Battery Load Testing. Each load bank is easy-to-use with an LCD display operator control panel and user-friendly fan switches, load step switches, and master load switches. UPS load testing stimulates a real-world performance demand of a critical power
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Handheld Surface & Volume Low Resistivity Meter for Conductive Materials
Loresta AX
The Loresta AX Resistivity Meter a handheld unit measures the low resistivity of samples with consistent accuracy. This resistivity meter measures resistivity using a wide variety of probes. The Loresta AX uses a standard RCF that enables the user to input other RCF''s if known.
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Resistivity Meter with Multi Electrode
POLARES
Till this moment the use of Electrical Resistivity Tomography (ERT) for geology has always been basically the same since its debut, based on the original vertical Electrical Soundings (VES) principles: applying a continuous current to two stakes inserted into the ground and measuring the corresponding voltage between other two. The applied current and thus the relative tension have always been continuous, with an inversion in polarity for each measure. The new tool POLARES uses an alternate current, instead, sinusoidal type, with an adjustable frequency.
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Sole Puncture Resistant Tester
UI-FT03-1
Sole Puncture Resistant Tester is to test safety shoe sole steel plate insert nail puncture resistance/penetration ability.
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Measurement Of Surface Tenison Using The Pendant Drop Method
SURFTENS PD
Optik Elektronik Gerätetechnik GmbH
SURFTENS PD is an image processing software for measurement of surface tension of liquids by pendant drop method. By help of drop shape analysis the surface tension is calculated, using the form parameters of the pendant drop. SURFTENS PD is used in connection with OEG equipment, but also available as standalone solution for applications of customer.
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Transformer Winding Resistance Meter
XWRM-10
The Motwane Manufacturing Company
The Motwane make XWRM-10 is a dual channel 10A rated, Transformer Winding Resistance Meter designed and developed aftere xtensive research on challenges and requirements of testing of various Transformer winding resistance. The instrument has One Current channel and two Resistance Channels. The instrument provides a large open circuit voltage of 42Volts, for fast charging of the highly inductive windings of transformers, to provide stable resistance values in minimum time. The XWRM-10 is intended to replace complex bridge set up with a single compact instrumentThe XWRM-10 is based on 4-wire measurement methodto measure low resistance accurately. The instrument iswell protected against inductive kickbacks offered by theinductive windings and gives stable reading on varioustypes of transformers.
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Hand Held Sheet Resistance Measurement Instrument[Replaceable Probe Set (Non-destructive Probe & Contact Probe) ]
DUORES
Easy to measure sheet resistance & carry aroundReplaceable hand-held probes for Non-destructive & Contact type
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Surface Analysis
Bruker Nano Surfaces provides industry-leading surface analysis instruments for the research and production environment. Our broad range of 2D and 3D surface profiler solutions supply the specific information needed to answer R&D, QA/QC, and surface measurement questions with speed, accuracy, and ease. Bruker’s AFMs are enabling scientists around the world to make discoveries and advance their understanding of materials and biological systems. Our tribometers and mechanical testers deliver practical data used to help improve development of materials and tribological systems.
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Resistivity Meter
Resistivity meterRSM-500 is used for measuring the volume resistivity of transformer oil and other electrical insulating liquids. • Auto ranged from 109 to 1015 ohm cm • Test voltages: internally generated +500V DC
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Low Resistance Ohmmeters
Some times know as Ducter testers, these are highly accurate, easy to operate instruments that measure resistance with resolution as fine as 0.1 micro-ohm. Digital micro-ohmeters and DLROs measure contact resistance of switch and circuit breakers, aircraft frame bonds, and rail and pipeline bonds just to name a few of the applications. Megger has models available for testing using test currents from 0.5 mA to 200 amps covering a multitude of applications that require precise low-resistance measurements.
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Contact Resistance Test Sets
When a high current passes through a pair of mechanically independent metallic contacts, the resistance must be as low as possible. An increase in resistance can lead to additional degradation, as I2R losses will cause local heating of the contact surfaces. Our range of micro-ohmmeters measure both steady state and dynamic low resistance values. With test currents up to 600A available, logging and trending are also available on some models. We ensure that our Contact Resistance tests sets are portable, making them suitable for field measurements. Our contact resistance testers’ portability makes them ideal for a vast range of resistance testing across the entire LV, MV HV and EHV spectrum.
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Precision Resistance Meter
IC4
Precision digital resistance meter IS4 is intended for use in an upgraded version of the TEST-9110 installation quality control system and testing on-board cable networks. The IC4 module can also be successfully used in other control and measurement systems based on the open international VXI standard.
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Surface And Subsurface EW System Tester
MS 1119
CPCI Based BTA is used to test ECM System Processor (80386 & 8051) Boards. This system consists of a Single Board Computer (SBC), CPCI RS422 Communication and Bus Interface Board (CBI), CPCI Digital Input & Output (DIO) Board and CPCI Analog Input & Output (AIO) Board to provide the necessary input/output signals to/from the board to be tested.
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3 Wire (Analogue) Earth Resistance Tester
1105 ER
Standard Electric Works Co., Ltd
● Capable of measuring earth resistance and earth voltage.● 2mA measuring current permits the testing of earth resistance without tripping earth leakage current breakers in the circuit under test.● In addition to facilitating for precision measurement, test leads for simplified two-wire measuring system also are supplied as standard accessories.● Battery operated.● Battery life indicator. ● Calibration performed with supplied test leads.
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Electrical Resistance (ER) Monitoring
The electrical resistance (ER) technique is an "on-line" method of monitoring the rate of corrosion and the extent of total metal loss for any metallic equipment or structure. The ER technique measures the effects of both the electrochemical and the mechanical components of corrosion such as erosion or cavitation. It is the only on-line, instrumented technique applicable to virtually all types of corrosive environments.
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Resistive & Capacitive, Inductive AC Load Bank
RLC
Inductive & capacitive load banks are reactive only and must be used in combination with a resistive load bank to provide the desired load profile to test a power system. Reactive loads banks can provide either a leading power factor (Capacitive) or lagging power factor (Inductive).
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Chemical Analysis + Surface Analysis
Rocky Mountain Laboratories, Inc.
An independent surface chemistry and microanalysis laboratory to serve the needs of industrial, academic, and governmental clients. Our objective – to provide real-world solutions for industries with materials and process development needs – is as fundamental to our organization today as when we began. Over the years we have strived to adapt our services to the specific needs of these clients.
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3 Wire (Digital) Earth Resistance Tester
ST-1520
Standard Electric Works Co., Ltd
● Capable of measuring earth resistance and earth voltage.● 2mA measuring current permits the testing of earth resistance without tripping earth leakage current breakers in the circuit under test.● Auto power off function.● The timer operates automatically for about three to five minutes when the "PUSH BUTTON SWITCH" and "TIMER ON BUTTON" are pressed together. This will keep test "ON" for the duration of the timer.● Timer for test function (count 3-5 minutes).● Battery operated.● Data hold function.● Small and light weight.● Calibration performed with supplied test leads.
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Transformer DC Winding Resistance Tester
HTZZ-50A / 246
Wuhan Huatian Electric Power Automation Co., Ltd.
Measurement transformer around the group and large power inductor dc resistance ideal equipment.
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High Coil Resistance Reed Relays
Series 118
The Pickering Series 118 is a range of very sensitive reed relays that are ideal for portable electronic instruments or other applications where low power consumption and a very small footprint is important. They have 5 volt coils with a resistance up to 2200 Ohms and the option of an internal diode.
