Industrial Instrumentation Products
Browse our catalog of precision measurement and control solutions from industry-leading manufacturers.
M4 Knick ARD 50 — Modular Immersion Holder for One Sensor
Description A modular immersion holder for one pH, ORP, conductivity, or oxygen sensor in tanks, basins, and channels...
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M4 Knick ARD 75 — Modular Immersion Holder for up to 3 Sensors
Description A modular immersion holder for up to three pH, ORP, conductivity, or oxygen sensors in tanks, basins, and...
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M4 Knick ARF 200 / ARF 202 — SS Flow-through Fitting for One Sensor
Description Compact 316 stainless-steel flow-through fittings for one pH/ORP, conductivity, or oxygen sensor in a sam...
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M4 Knick ARF 201 — PP Flow-Through Fitting for One Sensor
Description A polypropylene flow-through fitting for one pH/ORP, conductivity, or oxygen sensor in a 90° sample-loop ...
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M4 Knick ARF 210 — Flow-Through Fitting for up to 3 Sensors
Description A modular 316 stainless-steel flow-through fitting for up to three pH/ORP, conductivity, or oxygen sensor...
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M4 Knick ARF 215 — Plastic Flow-Through Fitting for up to 3 Sensors
Description A modular PP-H or PVDF flow-through fitting for up to three pH/ORP, conductivity, or oxygen sensors in a ...
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M4 Knick ARF 240 — Flow-through Fitting for Direct Installation in Pipelines
Description A straight 316 stainless-steel flow-through fitting installed directly in pipelines, suited to high-flow ...
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M4 Knick ARI 106 H — Hygienic Ingold Static Holder
Description A hygienic DN 25 Ingold static holder for inline pH, ORP, conductivity, or oxygen measurement in tanks an...
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M4 Knick BPR Valve — Back Pressure Relief Valve
Description A 316 stainless-steel back-pressure relief valve that regulates upstream pressure for analytical sample m...
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M4 Knick CHEMfit 311/315 — Static Tri-Clamp Holder
Description Tri-clamp static holders for 120 mm pH, ORP, conductivity, temperature, or turbidity sensors in tanks and...
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M4 Knick CL-80 — Simple Cleaning System for Immersion Holders
Description CL-80 provides electro-pneumatic cleaning for pH, ORP, conductivity, and dissolved oxygen sensors in proc...
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M4 Knick CL-90 — Simple Cleaning System for Retractable Holders
Description CL-90 provides electro-pneumatic cleaning for pH, ORP, conductivity, and dissolved oxygen sensors in proc...
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M4 Knick CP Compact Panel — Sample Conditioning Panel
Description A compact sample-conditioning assembly for elevated-temperature and elevated-pressure applications. The p...
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M4 Knick CR Cationic Resin Columns — Refillable Ion Exchange Columns
Description Refillable cation-exchange columns for sample conditioning before analytical measurement. Resin exchanges...
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M4 Knick CSF 625 — Stainless Steel Flow-Through Fitting
Description A compact stainless-steel flow-through fitting for the SE625 conductivity sensor, with a 90° sample-loop ...
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M4 Knick CSR 120 — Simple Retractable Holder for 120 mm Sensors
Description A compact retractable holder for 120 mm pH, ORP, conductivity, or oxygen sensors in low-pressure processe...
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M4 Knick CSR 225 — Simple Retractable Holder for 225 mm Sensors
Description A compact retractable holder for 225 mm pH, ORP, or conductivity sensors in low-pressure processes. Opera...
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M4 Knick CSR 3600B — Simple Ball Valve Retractable Holder
Description A modular ball-valve retractable holder supporting insertion depths up to 36 inches and a choice of const...
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M4 Knick CSR 425 — 1" Ball Valve Retractable Holder
Description A ball-valve retractable holder for 425 mm long, 12 mm diameter Pg 13.5 pH sensors, installed through a 1...
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M4 Knick CSS 120 — Static Holder for 120 mm Sensors
Description A static holder for 120 mm pH/ORP, conductivity, or dissolved oxygen sensors, suitable for new installati...
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M4 Knick CSS 225 — Static Holder for 225 mm Sensors
Description A static holder for 225 mm pH/ORP, conductivity, or dissolved oxygen sensors, suitable for new installati...
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M4 Knick CaliMat Buffers — pH Calibration Solution
Description Ready-to-use pH calibration solutions for industrial and laboratory measurement. Dosing bottles include a...
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M4 Knick Calibration Station — Mobile Sensor Calibration, Storage & Transport
Description An organized bench and field platform for sensor calibration, storage, and transport. The foam-lined case...
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M4 Knick Ceramat WA 150 — Rugged Pneumatic Retractable Holder for Unical & Uniclean Systems
Description A pneumatic retractable holder for 225 mm pH, ORP, conductivity, and oxygen sensors. Unical and Uniclean ...
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M4 Knick Ceramat WA 154 — Rugged Pneumatic Retractable Holder for Longer Immersion Depths
Description A pneumatic retractable holder for 225 mm pH, ORP, conductivity, and oxygen sensors. Unical and Uniclean ...
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M4 Knick Ceramat WA 160 — Rugged Pneumatic Retractable Immersion Fitting for Unical and Uniclean
Description A pneumatic immersion-style retractable holder for 225 mm pH, ORP, conductivity, and oxygen sensors. Unic...
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M4 Knick ELL — Pre-Assembled Basic Measurement Loop
Description The ELL is a preassembled measurement loop designed to simplify basic industrial pH, ORP, conductivity, a...
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M4 Knick HPR Valve — High Pressure Reduction Valve
Description An adjustable rod-in-tube pressure reducer for high-pressure liquid sampling, including boiler lines with...
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M4 Knick K25 — Conductivity Sensor for Heavily Polluted and Fibrous Media
The K25 is a four-electrode conductivity sensor for process streams containing heavy contamination or fibers. Its PEE...
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M4 Knick M4i-420 — 4...20 mA Display, Transmitter, and Controller
Description An integrated analog display, transmitter, and controller package for up to four Memosens pH, ORP, conduc...
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M4 Knick M4i-Link — Integrated Controller for Secure Data Transmission
Description An integrated remote-monitoring package for secure access to measurements and Memosens sensor diagnostics...
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View DetailsM4 Knick M4i-RTU — Digital Display, Transmitter, and Controller
Description A modular display, transmitter, and controller package using MemoRail Modbus to connect up to eight Memos...
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M4 Knick MP Monitoring Panel — Sample Monitoring Panels for Pressure, Temperature, & Flow
Description A compact pretubed panel for continuous analytical measurements in low-temperature, low-pressure sample a...
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M4 Knick MemoRail Modbus — DIN Rail-Mounted Memosens Transmitter with Modbus RTU
Description MemoRail Modbus is a compact DIN rail transmitter offering as many as two sensor inputs. It accepts the S...
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M4 Knick MemoRail — DIN Rail-Mounted Memosens Transmitter
Description MemoRail brings Memosens pH, ORP, conductivity, oxygen, and temperature measurements into a compact DIN r...
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M4 Knick MemoSuite — Sensor Management Software
Description PC software for calibrating and managing Memosens pH, ORP, oxygen, conductivity, and temperature sensors ...
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M4 Knick MemoTrans — Ultra-Compact Memosens Transmitter
Description MemoTrans is a compact two-wire transmitter for Memosens pH, ORP, conductive or inductive conductivity, a...
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M4 Knick Memosens Cable — Digital Sensor Cable
Description Digital cables connect Memosens sensors to transmitters through noncontact inductive power and signal tra...
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M4 Knick PL H-93 pH Sensor
M4 Knick PL H-93 pH Sensor The PL H-93 is intended for highly alkaline liquids and processes containing suspended sol...
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M4 Knick PL PETR — Analog pH & ORP Combination Sensor for Dirty Applications
Description An analog combination sensor measuring pH, ORP, and temperature through one process connection and one tr...
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M4 Knick Paraly SW 112 — Software to Collect Memosens Sensor Data Through a Portavo Portable Meter
Description No-cost Windows software for USB-equipped Portavo and Portamess instruments, supporting meter configurati...
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M4 Knick Portavo 904 X — Memosens Portable Meter for Hazardous Areas
Description A portable meter for hazardous-area field measurements, offline calibration, sensor diagnostics, and logg...
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M4 Knick Portavo 907 Multi — Multi-parameter Memosens Portable Meter with Data Storage and USB
Description Portable measurement, calibration, and diagnostics for pH, ORP, conductivity, and oxygen in the plant, sh...
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M4 Knick Portavo 908 Multi — Memosens Portable Meter with Data Storage, USB, and Printing Capability
Description A portable measurement and calibration instrument with printing capability for pH, ORP, conductivity, and...
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M4 Knick ProgaLog 4000 — Transmitter Configuration Software
Description PC software for offline configuration of Protos II 4400 and Stratos Multi transmitters, including their d...
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M4 Knick Protos II 4400 — Modular 4-Wire Multi-Parameter Transmitter
Description Protos II 4400 provides modular four-wire analysis of pH, ORP, conductive or inductive conductivity, and ...
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M4 Knick S120 — CPVC Static Holder for 120 mm Sensors
Description An economical CPVC static holder for 120 mm sensors measuring pH, ORP, conductivity, or dissolved oxygen ...
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M4 Knick SC Sample Coolers — High Temp Process Conditioning
Description Stainless-steel sample coolers for liquid, gas, or steam sample conditioning, supplied as panel component...
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M4 Knick SE515 pH Sensor
M4 Knick SE515 pH Sensor The SE515 is the ideal pH sensor for water and wastewater treatment applications. The Memos...
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M4 Knick SE547 ISFET pH Sensor
M4 Knick SE547 ISFET pH Sensor The SE547 measures pH without a glass sensing membrane, using an ISFET element in a du...
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M4 Knick SE554 AMSN Combination pH & ORP Sensor
M4 Knick SE554 AMSN Combination pH & ORP Sensor The SE554 AMSN measures pH and oxidation-reduction potential simu...
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M4 Knick SE554 pH Sensor
M4 Knick SE554 pH Sensor The SE554 is built for pH measurement in dirty liquids, suspended-solids service, an...
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M4 Knick SE555 AMSN Combination pH & ORP Sensor
M4 Knick SE555 AMSN Combination pH & ORP Sensor The SE555 AMSN combines pH and ORP measurement for industrial app...
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M4 Knick SE555 All-Purpose pH Sensor
M4 Knick SE555 All-Purpose pH Sensor The SE555 covers a broad range of industrial pH applications, including aggressi...
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M4 Knick SE557 Refillable pH Sensor
M4 Knick SE557 Refillable pH Sensor The SE557 uses refillable liquid electrolyte for precise pH measurement in liquid...
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M4 Knick SE558 pH Sensor for Low-Conductivity Liquids
M4 Knick SE558 pH Sensor for Low-Conductivity Liquids The SE558 is designed for pH measurements in water and ...
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M4 Knick SE560 Refillable pH Sensor
M4 Knick SE560 Refillable pH Sensor The SE560 combines refillable liquid electrolyte with fluoride-resistant Alpha gl...
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M4 Knick SE564 ORP Sensor
M4 Knick SE564 ORP Sensor The SE564 measures oxidation-reduction potential in demanding industrial liquids, particula...
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M4 Knick SE565 All-Purpose ORP Sensor
M4 Knick SE565 All-Purpose ORP Sensor The SE565 is designed for ORP monitoring in aggressive liquids, fermentation pr...
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M4 Knick SE571 pH Sensor for Oily Liquids
M4 Knick SE571 pH Sensor for Oily Liquids The SE571 is designed for pH measurement in liquids containing oil, suspend...
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M4 Knick SE600 — Conductivity Sensor for High-Temperature Applications
Description The SE600 is an analog conductivity sensor for demanding processes involving elevated temperatures, high ...
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M4 Knick SE603 — Conductivity Sensor for Corrosive Processes
The SE603 measures conductivity in corrosive and oxidizing process media. Its PTFE body and platinum electrodes provi...
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M4 Knick SE604 — Coaxial Conductivity Sensor for Ultrapure Water
The SE604 is designed for conductivity measurement in high-purity water and condensate. Its coaxial stainless steel e...
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M4 Knick SE605 — Coaxial Conductivity Sensor for Low-Conductivity Water
The SE605 provides conductivity measurement for high-purity water, condensate, and related water-treatment applicatio...
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M4 Knick SE605H — Hygienic Coaxial Conductivity Sensor
The SE605H combines low-conductivity measurement with a hygienic design for high-purity water systems. Its electropol...
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M4 Knick SE610 — Basic Conductivity Sensor for Water
The SE610 is an economical analog conductivity sensor for routine water monitoring. It uses two coaxial stainless ste...
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M4 Knick SE615 — Water and Wastewater Conductivity Sensor
The SE615 provides conductivity measurement for water and wastewater processes using two graphite electrodes housed i...
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M4 Knick SE620 — Hygienic Conductivity Sensor for Pharmaceutical Applications
The SE620 is a hygienic analog conductivity sensor for pharmaceutical and high-purity water applications. Its polishe...
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M4 Knick SE625 — Coaxial Conductivity Sensor for Low-Conductivity Water
The SE625 is designed for conductivity measurement in high-purity water and condensate. Its coaxial titanium electrod...
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M4 Knick SE630 — Corrosion-Resistant Conductivity Sensor
The SE630 is designed for conductivity monitoring in industrial water and chemically demanding processes. Its PES bod...
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M4 Knick SE655 — PEEK Toroidal Conductivity Sensor
The SE655 uses toroidal measurement for conductivity monitoring in polluted, coating, and chemically demanding proces...
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M4 Knick SE656 — PFA Toroidal Conductivity Sensor
The SE656 is a toroidal conductivity sensor for aggressive chemical processes. Its PFA construction is designed for d...
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M4 Knick SE670 — Polypropylene Toroidal Conductivity Sensor
The SE670 provides toroidal conductivity measurement for water treatment and industrial processes with moderate chemi...
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M4 Knick SE680 — Hygienic Toroidal Conductivity Sensor
The SE680 is a toroidal conductivity sensor for hygienic processes in pharmaceutical, food, and beverage production. ...
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M4 Knick SE706 — Hygienic Oxygen Sensor
The SE706 is an amperometric dissolved-oxygen sensor for sterile and hygienic processes. Its polished stainless steel...
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M4 Knick SE707 — High-Resolution Trace Oxygen Sensor
The SE707 measures trace dissolved oxygen in hygienic processes, including applications with elevated carbon-dioxide ...
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M4 Knick SE715 — Oxygen Sensor for Water and Wastewater
The SE715 is an economical dissolved-oxygen sensor for water and wastewater treatment. Its amperometric, Clark-style ...
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M4 Knick SE740 — Low-Maintenance Optical Oxygen Sensor
The SE740 uses optical sensing for dissolved-oxygen measurement in industrial and hygienic processes. Its polished st...
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M4 Knick SensoGate WA 130 H — Hygienic Pneumatic Retractable Holder for Unical & Uniclean Systems
Description A hygienic pneumatic retractable holder for 225 mm pH, ORP, conductivity, and oxygen sensors. Connects to...
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M4 Knick SensoGate WA 130 — Pneumatic Retractable Holder for Unical & Uniclean Systems
Description A pneumatic retractable holder for 225 mm pH, ORP, conductivity, and oxygen sensors. Connects to Unical o...
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M4 Knick SensoGate WA 131 H — Sanitary Pneumatic Retractable Holder for CL-90 System
Description A hygienic pneumatic retractable holder for 225 mm pH, ORP, conductivity, and oxygen sensors. Works with ...
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M4 Knick SensoGate WA 131 M — Retractable Holder with Manual Rotary Drive
Description A manual rotary-drive retractable holder for 225 mm pH, ORP, conductivity, and oxygen sensors. The rotary...
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M4 Knick SensoGate WA 131 MH — Hygienic Retractable Holder with Manual Rotary Drive
Description A hygienic manual rotary-drive retractable holder for 225 mm pH, ORP, conductivity, and oxygen sensors. T...
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M4 Knick SensoGate WA 131 — Pneumatic Retractable Holder for CL-90 System
Description A pneumatic retractable holder for 225 mm pH, ORP, conductivity, and oxygen sensors. Works with CL-90 or ...
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M4 Knick Stratos Eco — 4-Wire Analog Transmitter
Description Stratos Eco is a basic four-wire analyzer for analog pH, ORP, conductivity, and dissolved oxygen sensors ...
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M4 Knick Stratos Evo — 2-Channel Analytical Transmitter
Description Stratos Evo is a four-wire analyzer for pH, ORP, conductive or inductive conductivity, and dissolved oxyg...
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M4 Knick Stratos MS — Basic Memosens Multi-Parameter Transmitter
Description Stratos MS provides basic four-wire analysis with Memosens digital sensors for pH, ORP, conductive or ind...
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M4 Knick Stratos Multi — Multi-Parameter Transmitter for pH, ORP, Conductivity & Oxygen
Description The Stratos Multi is the most versatile and flexible analytical transmitter on the market for pH, ORP, co...
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M4 Knick Stratos Pro A2 — 2-Wire Loop-Powered Transmitter
Description Stratos Pro A2 uses a two-wire, loop-powered arrangement for pH, ORP, conductive or inductive conductivit...
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M4 Knick TVS Valve — Thermal Shut-Off Valve
Description A thermal shutoff valve that protects analyzers by limiting the temperature of incoming process fluid. It...
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M4 Knick Type 18 Differential pH Sensor
M4 Knick Type 18 Differential pH Sensor The Type 18 uses a differential measurement design and rugged Glasteel constr...
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M4 Knick Unical 9000 — Automated Cleaning and Calibration System
Description An automated cleaning, calibration, and diagnostic controller for pH, ORP, and dissolved oxygen sensors i...
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M4 Knick Uniclean 720/730 — Electro-pneumatic Controller for Automatic Cleaning
Description Uniclean 720/730 provides electro-pneumatic cleaning for pH, ORP, conductivity, and dissolved oxygen sens...
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M4 Knick VarioPin Cable — Analog Sensor Cable
Description An analog sensor cable for six-pin VarioPin connectors, carrying measurement signals between sensors and ...
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M4 Knick WA 111 — Plastic Pneumatic Retractable Holder
Description A modular plastic pneumatic retractable holder for flanged installations in tanks and pipes, including hi...
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M4 Knick cCare Systems — Automated Sensor Cleaning and Calibration Package
Description A complete automated sensor-maintenance package for cleaning, calibration, and process measurement in dem...
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