Four-wire
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Product
Field-installation Type Ammonia Nitrogen Meter(Four-Wire Transmission)
HC-200NH
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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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Product
Field-installation Type Turbidity Meter (Four-Wire Transmission, Immersion Type)
HU-200TB-IM
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HU-200TB-IM connects immersion type turbidity/ MLSS sensor (SS-150) and measures turbidity and SS in activated sludge. The sensor can be immersed directly in the sample water tank. Optimal for turbidity and SS management of wastewater and intake.
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Panel-mount Type pH Meter (Four-Wire Transmission, Industrial Time sharing Proportional Control)
HP-480TP
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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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Field-installation Type Turbidity Meter (Four-Wire Transmission, For Wide Range)
HU-200TB-W
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HU-200TB-W is a turbidity meter developed to continuously measure turbidity in processes with large turbidity changes, such as water intake and sedimentation tanks in water supply plants. It employs transmission 90-degree scattered light method and is ideal for monitoring changes in processes with large turbidity changes from low range (10 degrees) to high range (2000 degrees). An electric wiper cleaning can be installed as an option, and long-term stable measurement is possible by periodic cleaning.
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Product
Field-installation Type Dissolved Oxygen Meter (Four-Wire Transmission, Membrane Type)
HD-200
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HD-200 connects the DO (Dissolved Oxygen) sensor (DO-1100) and measures the DO in the sample water.The measurement method is membrane type polarography method. It is suitable for monitoring DO in wastewater treatment or aquarium for aquaculture.
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Panel-mount Type Conductivity Meter (Four-Wire Transmission, For Wide Range)
HE-960HI
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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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Field-installation Type Color Meter (Four-wire Transmission)
HU-200CL
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HU-200CL connects flow through color detector Cl-20 and measures color and turbidity in the sample water. Suitable for monitoring purified water.
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Product
Panel-mount Type pH Meter (Four-Wire Transmission, Pulse Proportional Control)
HP-480PL
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HP-480PL industrial pH meter is a pH meter with a pulse proportional control function, which can drive a pulse pump directly.It connects pH sensor and measures pH and temperature in the sample water.As the HP-480PL has a high injection resolution per pulse, it can be used to control a pulse pump as part of a system for processing involving fine control of pH values, for example controlling the pH values of microscopic or small samples.
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Product
Field-installation Type Simplified Fluoride Ion Concentration Meter(Four-Wire Transmission)
HC-200F
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HC-200F is connected to a fluoride ion electrode (1009) to detect free fluoride ions in the sample water.(Total fluorine is not detected.) It is suitable for fluoride ion monitoring in effluent from factories, e.g., those of semiconductor FPD and glass manufacturers.
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Panel-mount Type Residual Chlorine Meter (Four-Wire Transmission)
HR-480
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HR-480 industrial residual chlorine meter takes sequential measurements of free residual chlorine, which is an indicator used in the inspection of the anti-bacterial properties of drinking water and swimming pools.The sensor(RS-1) combined with uses a galvanic method with no drive section, making it highly maintainable, and producing stable measurements over a long period.
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Field-installation Type Turbidity Meter (Four-Wire Transmission, High-sensitivity)
HU-200TB-H
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HU-200TB-H connects flow-through type turbidity sensor (SS-120-H) and measures turbidity. It accurately measures turbidity in the range of low to medium concentration (10 degrees) by the 90-degree transmission scattering method with less stray light.Optimal for control and monitoring of wastewater treatment and production processes.
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Product
Field-installation Type Dissolved Oxygen Meter (Four-Wire Transmission, Optical Type)
HD-200FL
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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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Product
Panel-mount Type pH Meter (Four-Wire Transmission, 4 point ararm, Time sharing Proportional Control)
HP-960FTP
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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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Product
Field-installation Type pH Meter (Four-Wire Transmission)
HP-200
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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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Field-installation Type Electric Conductivity Meter (Four-Wire Transmission, For High-concentration)
HE-200H
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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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Field-installation Type Residual Chlorine Meter (Four-Wire Transmission, Rotating Type)
HR-200RT
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HR-200RT is connected to a residual chlorine sensor (RA-30), 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 Electric Resistivity Meter (Four-Wire Transmission)
HE-200R
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HE-200R connects resistivity sensor (ERF Series) and measures resistivity and temperature in the sample water. It is suitable for measurement of UPW resistivity.
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Product
Resistance Meter
MT8-4L
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М-module МТ8-4Л is a mezzanine module designed to measure the resistance of resistive sensors using a four-wire measurement circuit in eight channels (eight-channel digitizer). М-module МТ8-4Л is installed on the carrier of mezzanines - module НМ-М and is connected to it via a local information highway. Up to four m-modules of various types can be installed on the NM-M module. The NM-M module, together with the m-modules installed on it, forms a VXI module of size C-1 and is used to create information measuring VXI systems.
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Resistance Measurement
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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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Product
4-Wire Universal Cable/Harness Tester
LX-850
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Shenzhen Lian Xin Technology Co., Ltd.
Starting up conducts self-diagnosis and self-correction·The system can scan and direct automatically.·The system provides advanced instant open-circuit, short-circuit, continuity test, can test the wire break·It can function as unilateral, standard, multi-segment and spot test of wire·The maximum test voltage is AC1000V / DC1500V·The system adopts the advanced four-wire measurement, and the minimum measurable range is 1mΩ.·The maximum test spot is 256.·640×480 full Chinese/English large color display .·All varieties of linearity and safety tests are available.·Fully programmable continuous test is available.
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Electrical Testing
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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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Product
Four Wire Modem for SEL Mirrored-Bits
MBT 9600
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Application specific features set the MBT9600 Four Modem apart from the conventional high speed modems. Its compact size and ease of installation make the MBT9600 an ideal, low cost alternative to conventional audio tone teleprotection systems.The circuitry is ideally suited for use over private networks such as conventional voice channels over analog microwave.
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Electronic Resistance Store
MPS2
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The MPS2 module is a mezzanine module designed to form DC resistance in two channels with a four-wire measurement circuit. MPS2 is installed on the mezzanine carrier - the NMU module and is connected to it via a local information highway. Up to four mezzanines of various types can be installed on the NMU module. The NMU module together with the mezzanines installed on it forms a VXI module of the size C-1 and is used to create information measuring VXI systems.
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Short Circuit Locator
A694
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The A694 is a short circuit locator designed for fault location in metallic cables. The instrument measures the ratio of the resistances of the two sections of failed conductor using a four-wire "Kelvin" connection, thus eliminating errors associated with contact resistances of the test leads. With the A694 you can determine if the cable has more than a short and locate the first and the last fault. The instrument locates fault with an insulation resistance up to 5 Mohms in cables that have a total resistance greater than 0.1 ohm and less than 40 kohms. The distance to fault is measured as a percentage of the total length of cable and is displayed on a large LCD display.
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Panel-mount Type Resistivity Meter (Four-Wire Transmission)
HE-480R
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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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Product
Battery Fault Insertion Unit
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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Panel-mount Type Residual Chlorine Meter (Four-Wire Transmission, polarography method type)
HR-480P
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Panel-mount type transmitter HR-480P connects residual chlorine sensor (RA-20) and measures residual chlorine and temperature in the sample water. Suitable for monitoring swimming pool and anti-bacterial properties of drinking water.
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Panel-mount Type Conductivity Meter (Four-Wire Transmission, For Low-concentration)
HE-480C
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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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Field-installation Type Residual Chlorine Meter (Four-Wire Transmission, Water flow beads)
HR-200
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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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Octal Four-wire Multiplexer
SIM925
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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
