Four-wire
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Octal Four-wire Multiplexer
SIM925
Stanford Research Systems, Inc.
The SIM925 is an eight input channel, four-wire multiplexer for low-level signal applications. Kelvin-lead measurements are supported with optional buffering of the two sense leads
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Panel-mount Type Resistivity Meter (Four-Wire Transmission, 2-channel)
HE-960RW
HE-960RW connects resistivity sensor(ERF sereies) and measures resistivity and temperature in the sample water.This resistivity meter is ideal for such applications as the high-precision water monitoring employed at ultra-pure water plants used in semiconductor manufacturing.They utilize newly designed, high-precision, high-stability temperature measurement circuitry and a vastly improved temperature compensation function, an important element for measuring the resistivity of ultra-pure water.
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Field-Installation Type ORP Meter (Four-Wire Transmission)
HO-200
HO-200 connects ORP sensor and measures ORP and temperature in the sample water. It is suitable for neutralization reaction treatment management of aeration tank, denitrification tank, etc.
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Panel-mount Type pH Meter (Four-Wire Transmission, Industrial Time sharing Proportional Control)
HP-480TP
HP-480 connects pH sensor and measures pH and temperature in the sample water. Suitable for monitoring and control of various production processes and wastewater treatment, etc. Many types of electrodes are available to match the sample properties.HP-480TP is a pH meter with a time sharing proportional control function, making it ideal for tasks such as interval processing in any type of control process.
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Panel-mount Type Conductivity Meter (Four-Wire Transmission, 2-channel)
HE-960CW
HE-960CW connects conductivity sensor (ESH /FS Series) and measures conductivity and temperature in the sample water. It is ideal for the conductivity control of the purified water, pasteurized water, and water for injection that are used in the production of pharmaceuticals.And we have developed a lineup of electric conductivity sensors that can be used in conjunction, from the conventional insertion type to the flow-through type with improved cleaning and sanitary properties.
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Field-installation Type Residual Chlorine Meter (Four-Wire Transmission, Water flow beads)
HR-200
HR-200 is connected to a residual chlorine sensor (RA-20), which allows the free residual chlorine concentration to be measured with high accuracy. It is sutable for waterworks, pool water sterilization, and desalination systems. The measurement method is a three-pole polarographic method, which enables continuous monitoring of residual chlorine concentrations without using reagents. Stable measurement over a long period was realized by physical polishing cleaning using beads.
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Field-installation Type pH Meter (Four-Wire Transmission)
HP-200
HP-200 connects pH sensor and measures pH and temperature in the sample water. Suitable for monitoring and control of various production processes and wastewater treatment, etc. Many types of electrodes are available to match the sample properties.
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Panel-mount Type pH Meter (Four-Wire Transmission, 4 point ararm, Time sharing Proportional Control)
HP-960FTP
HP-960FTP industrial pH meter is a high-end pH meter with a four-point alarm and a time sharing proportional control function.It connects pH sensor and measures pH and temperature in the sample water.It can also be linked with a cleaning device via an external input, extending its automatic operation time.Many types of electrodes are available to match the sample properties.
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Field-installation Type MLSS Meter (Four-Wire Transmission)
HU-200SS
HU-200SS connects immersion type MLSS sensor (SS-90) and measures MLSS in activated sludge. A wide range (0-2000mg/L)of SS contents can be measured with excellent reproducibility using the near-infrared radiation transmission method. Any of the calibration curves of MLSS, Clay (inorganic mud) and Kaolin may be used as standard substances of SS. If "MLSS" is selected for an activated sludge treatment tank, "Clay" for the precipitation treatment of construction sludge, or "Kaolin" for white mud, a concentration can be obtained closer to an analyzed value.
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Panel-mount Type pH Meter (Four-Wire Transmission)
HP-480
HP-480 connects pH sensor and measures pH and temperature in the sample water. Suitable for monitoring and control of various production processes and wastewater treatment, etc. Many types of electrodes are available to match the sample properties.
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Panel-mount Type Conductivity Meter (Four-Wire Transmission, For Wide Range)
HE-960HI
HE-960HI is a wide-range type sanitary electric conductivity meter that can measure over a wide range from manufacturing water up to 500 mS/cm, and enables advanced concentration management through abundant outputs. It connects conductivity sensor (FES-220/310). Cleaning-in-Place (CIP) terminal management and a reduction in cleaning solutions is also achieved through accurate surface detection.And we have developed a lineup of electric conductivity sensors that can be used in conjunction, from the conventional insertion type to the flow-through type with improved cleaning and sanitary properties.
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Panel-mount Type ORP Meter (Four-Wire Transmission)
HO-480
The HO-480 industrial ORP meter is an ORP converter for measuring the oxidation-reduction potential of all types of solvent.Being combined with a lead-free sensor, it makes measurements in a way that is kind to the environment.
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Industrial pH Meter (Four-Wire Analyzer)
HP-200-K
One-touch calibration function Realizes gentle measurement by combination with lead-free ORP electrode
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Field-installation Type Electric Conductivity Meter (Four-Wire Transmission, For High-concentration)
HE-200H
HE-200H connects conductivity sensor (FES-125F,126F) and measures conductivity and temperature in the sample water. It can be used not only for measurement of electrical conductivity in aqueous solution, but also for concentration adjustment and rinse monitoring of CIP, etc., as well as for concentration monitor of process.
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Panel-mount Type Conductivity Meter (Four-Wire Transmission, For Low-concentration)
HE-480C
HE-480C connects conductivity sensor (ESH /FS Series) and measures conductivity and temperature in the sample water. This is a highly functional model, with high-performance temperature compensation, and is applicable to a wide range of tasks, from managing pure water for use with semiconductors, to managing the quality of boiler water.
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Panel-mount Type Resistivity Meter (Four-Wire Transmission)
HE-480R
HE-480R connects resistivity sensor(ERF sereies) and measures resistivity and temperature in the sample water.The feature is the high-precision temperature compensation function.Its high-performance temperature compensation makes it ideal for sequential monitoring of ultra-pure water used in manufacturing processes in the semiconductor field, and many other fields, including the areas of electrical goods, foods and medicines.
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Micro-Ohmmeters
The Micro-ohmmeter performs reliable low resistance measurements with test currents to 10A and resolution to 1. Uses a four-wire Kelvin bridge method, which eliminates test lead resistance for a measurement accuracy of 0.25%.
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RS-232 to RS-422/RS-485 Interface Converter
Model 9365
FEATURES: DIN Rail Mountable; User Selectable RS-422 or RS-485; User Selectable Two- or Four-wire RS-485; DataSpy® LCD Display; Intelligent Control of RS-485 Transmitter and Receiver; DTE/DCE Compatible; Data Rates Up to 115.2 kbp.
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Panel-mount Type Dissolved Oxygen Meter (Four-Wire Transmission, Membrane Type)
HD-480
The HD-480 industrial dissolved oxygen meter takes sequential measurements of the concentration of dissolved oxygen, which is an indicator used in the management of activated sludge tanks in waste water processing, and the quality of the water in boilers, or rivers and waterways.As there is no need to exchange the membrane of the disposable sensor included, it is easy for anyone to use.
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Resistance Meter
MT16-4L
М-module МТ16-4Л is a mezzanine module (hereinafter referred to as a mezzanine), designed to measure the resistance of resistive sensors using a four-wire measurement circuit in sixteen channels (sixteen-channel digitizer). М-module МТ16-4Л is installed on the mezzanine carrier - module НМ-М and is connected to it via a local information highway. Up to four mezzanines of various types can be installed on the NM-M module. The NM-M module, together with the mezzanines installed on it, forms a VXI module of the C-1 size and is used to create information measuring VXI systems.
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AC Current Isolated Sensor Two / Four Wire Transducer
TSCT (Average Sensing) / TFCT (TRUE RMS)
Kusam Electrical Industries Limited
• Transform Input: AC 5~400A directly into DC 4~20mA, no need external CT.• Suitable for application with high waveform distortion :(Frequency converter, Motor, SCR )• High accuracy ＜0.5%• High response time• High stability, easy connection.
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SparkFun Load Sensor Combinator
The SparkFun Load Sensor Combinator is a bare PCB that combines four load sensors into a standard four-wire Wheatstone bridge configuration. If you open up an electronic bathroom scale, you’ll find a large rat's nest of wires. The Load Sensor Combinator was created to combine the 12 wires found in a bathroom scale into the standard four-wire Wheatstone bridge configuration.
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Battery Fault Insertion Unit
The Battery Fault Insertion Unit (FIU) provides intelligent switching of cell-simulation channels for the Battery Simulator 1200. The switching capability enables simulation of open-circuit and short-to-rail fault conditions on any cell channel for the purposes of battery management system (BMS) testing. Additionally, a four-wire auxiliary input allows you to connect an external digital multimeter (DMM) instrument to any cell channel for very high-accuracy bypass current and cell voltage measurements. Each FIU provides 24 independently-programmable cell-switching channels for one or two 12-cell Battery Simulator 1200 units. Additional Battery Simulator 1200 and FIU instruments can extend functionality up to 120 series-connected cell channels.
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Resistance Measurement
PROMET 100 / 200 / 600 high-accuracy, precision ohm meters deliver an adjustable test current up to 600 A which is independent of the supply voltage. They utilize the four-wire resistance measurement method, enabling them to meet extremely stringent accuracy requirements when determining resistance values in the micro-ohm range.State-of-the-art power electronics coupled with a robust design guarantee maximum reliability, even when used as portable devices in switching stations or industrial environments.The modern operating concept, an interface to the test systems of the ACTAS product line and an optional remote control unit make these micro-ohm meters flexible and versatile.
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Field-installation Type Electric Conductivity Meter (Four-Wire Transmission, For Low-concentration)
HE-200C
HE-200 connects conductivity sensor (ESH/FS Series) and measures conductivity and temperature in the sample water. It is suitable for monitoring pure water/boiler water drainage recovery control and inline measurement of pharmaceutical water conductivity according to USP<645> quality guidelines.
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Electrical Testing
Innovative Testing Solutions, Inc.
Our specialty is Direct Current automotive components. We perform product validation and design verification testing on both electrical components and systems. Also, we perform warranty investigation testing and failure analysis. We have voltage capabilities to 300 volts and current capabilities to 1000 amperes. Both two-wire and four-wire resistance measurements are supported from NanoOhms to GigaOhms.
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Field-installation Type Ammonia Nitrogen Meter(Four-Wire Transmission)
HC-200NH
HC-200NH is an ammonia nitrogen(NH4-N) meter using ion electrode method which is designed for aeration control in wastewater treatment.
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Field-installation Type Dissolved Oxygen Meter (Four-Wire Transmission, Optical Type)
HD-200FL
Optical dissolved oxygen sensor with no electrolyte replacement and rugged membrane.Highly intelligent, including automatic recognition of membrane properties when replacing the sensor cap.The HD-200FL is an optical (fluorescent) dissolved oxygen meter suitable for monitoring aeration tanks used for sewage treatment, effluent treatment, and other processes. Compared to conventional membrane polarographic type sensors, there is no need for electrolyte (internal fluid) replacement or warming, up. Characteristics of optical sensors are utilized to realize unequaled, improvement in ease of maintenance and reduction in running costs. Moreover, it features enhanced user-friendliness, with sensor caps that have built-in memory and a membrane replacement notification function.
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PXIe-4147, 4-Channel, ±8 V, 3 A Precision PXIe Source Measure Unit
786888-01
PXIe, 4-Channel, ±8 V, 3 A Precision PXI Source Measure Unit - The PXIe-4147 is a 4-channel source measure unit (SMU) ideal for high-pin-count applications. It features 4-quadrant operation, and each channel has integrated remote four-wire sensing for accurate measurements. The sample rate of the PXIe-4147 can reduce measurement times, capture transient device characteristics, and help you perform current-voltage (I-V) characterization of devices-under-test (DUTs). With a high-speed sequencing engine, you can synchronize SMUs with each other or with other instruments such as switches or high-speed digital test modules. Additionally, you can tune the PXIe-4147 response to any load to achieve optimum responses with maximum stability and minimum transients using SourceAdapt technology.
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Transformer Winding Resistance Tester
KRI 9310
KRI 9310 adopt Kelvin four-wire testing method, which effectively eliminates the influence of the resistance of the test line on the test results. It can be able to increases the current to 10A by which can test extremely low resistance to 0.01 Ω(such as amorphous alloy, Copper-nickel, nickel-chromium-iron, iron-chromium-aluminum etc). For the tested objects with high resistance value (CT/PT), the instrument can extend the range to 20 kΩ，so the wide resistance test range enables KRI9310 can cover 80% of the power transformer products on the market and switchgear bus-bar cable etc. The power of the tester use the built-in rechargeable lithium battery that can test hundreds of transformers by one time charging.
