Four-wire
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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 Resistivity Meter (Four-Wire Transmission)
HE-200R
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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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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Panel-mount Type pH Meter (Four-Wire Transmission, Pulse Proportional Control)
HP-480PL
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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Field-installation Type Residual Chlorine Meter (Four-Wire Transmission, Rotating Type)
HR-200RT
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 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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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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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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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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Field-installation Type Color Meter (Four-wire Transmission)
HU-200CL
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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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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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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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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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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Field-installation Type Dissolved Oxygen Meter (Four-Wire Transmission, Membrane Type)
HD-200
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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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 Residual Chlorine Meter (Four-Wire Transmission)
HR-480
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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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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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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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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Short Circuit Locator
A694
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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Resistance Measurement
PROMET
High-precision micro-ohm measuring systems with adjustable DC test current for determining resistances on circuit breakers or inductive loads such as transformers, for example. The high-precision ohm meters of the PROMET series are used to determine very low electrical resistances in the µΩ range. The adjustable test current of up to 600 A in combination with a four-wire measuring method delivers measurement results which meet stringent accuracy requirements. State-of-the-art power electronics coupled with a robust design guarantee excellent reliability for use as a portable device in switching stations and industrial environments. Typical applications include determining the contact resistance of switchgear devices and determining the resistance on inductive loads such as transformers.
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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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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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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 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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Field-installation Type Turbidity Meter (Four-Wire Transmission, Immersion Type)
HU-200TB-IM
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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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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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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Panel-mount Type Residual Chlorine Meter (Four-Wire Transmission, polarography method type)
HR-480P
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.
