Rochester Sensors

What Rochester Sensors does

Rochester Sensors, originally founded as Rochester Gauges in 1918 and rebranded following the acquisition of sensor companies, is a global designer and manufacturer of liquid-level measurement instruments. The company offers a broad portfolio spanning mechanical float and spiral gauges, reed-switch probes, hydrostatic, capacitance, guided-wave radar, ultrasonic, and angle-position sensors, as well as wireless/BLE-enabled tank monitoring systems. Its sub-brands — R3D, TwinSite, Magnetel, SureSense, and PulseWave — cover the range from basic dial gauges to IoT-connected tank monitors, and the company holds nearly 200 patents across these sensing modalities.

The company serves more than a dozen industrial verticals, including agriculture, construction, mining, on-highway truck/bus, railcar/locomotive, marine, power generation, refrigeration, cryogenics, industrial gases, LP gas / NH3, recreational vehicles, and telemetry/remote monitoring. Its go-to-market combines a multi-tier distributor network (Digi-Key and Mouser for catalog/low-MOQ orders; specialized distributors such as John M Ellsworth, United Refrigeration, and National Energy Equipment for industrial and refrigeration channels) with direct enterprise field sales targeting OEMs, government/military customers, and aerospace buyers. Revenue is generated primarily through hardware unit sales of sensors and gauges, augmented by add-on modules (R3D remote-ready dials, TwinSite senders) and a recently launched BLE mobile app.

Rochester Sensors operated as a portfolio company of Renovo Capital from 2018 until its October 2025 acquisition by Amphenol Corporation (NYSE: APH), a global interconnect and sensor conglomerate. The company holds IATF 16949:2016 automotive quality certification, UL listings for LP gas and flammable-liquid service, FCC certification for cellular telemetry products, and operates manufacturing in the US (Coppell, TX) and Mexico, with sales/engineering offices in Belgium, the UK, Ireland, and China.

Name

Rochester Sensors

Legal name

Rochester Sensors, LLC

Website

https://rochestersensors.com

Company type

Private

Founded year

1918

Operating status

Operating

Headcount range

501–1,000 employees

Short description

Rochester Sensors designs and manufactures liquid-level gauges, sensors, and wireless monitoring equipment for industrial OEMs across agriculture, construction, cryogenics, LP gas, marine, rail, refrigeration, and telemetry applications.

Ownership category

akta.pro rank

Product category

Industrial Liquid Level Sensors and Gauges

NAICS

Instruments and Related Products Manufacturing for Measuring, Displaying, and Controlling Industrial Process Variables (334513), Other Measuring and Controlling Device Manufacturing (334519)

SIC

Industrial Instruments For Measurement, Display, And Control (3823)

akta.pro primary industry

Industrial Sensors (Pressure, Temperature, Flow, Level, Proximity, Vibration) (IMAGAFAA)

akta.pro secondary industries

Industrial-Grade Sensors & Transducer Components (Discrete sensing elements, transducers, MEMS sensors) (IMAGAJAO), Environmental Sensors (Temperature/Humidity/Gas/Air Quality) (HDAHALAD)

Keywords

• Liquid level sensors
• Tank level gauges
• Capacitance fuel sensors
• Guided wave radar sensors
• Wireless tank monitoring

Headquarters

HQ city

Dallas

HQ country

United States

HQ region

North America

Offices7 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Supply Chain, Personnel, Operations, Technology or R&D, Marketing or Sales, Infrastructure

Revenue model

1. Liquid Level Sensors and Gauges: Hardware sales of liquid level sensors, gauges, and monitoring equipment for industrial applications. Products range from simple mechanical float gauges to advanced wireless monitoring systems. Revenue generated from product sales through distribution channels and direct manufacturer relationships.

Pricing tiers

Go-to-market motion2 records

Distribution channels7 records

Marketing channels5 records

Core offering

Rochester Sensors designs and manufactures liquid level gauges, sensors, senders, switches, and wireless monitoring systems for measuring fuels, oils, water, coolants, refrigerants, LP gas, anhydrous ammonia, and cryogenic liquids. The company offers a comprehensive portfolio across mechanical (float, spiral, reed switch), electronic (capacitance, hydrostatic, guided wave radar), and wireless (BLE, cellular) technologies for industrial, commercial, and OEM applications.

Product overview

Rochester Sensors is a global manufacturer specializing in liquid level measurement solutions with over 100 years in operation and nearly 200 patents. The company offers a comprehensive portfolio of products organized by application: Fuel/Oil Level Sensors, Bulk Liquid/Fuel Level Sensors (Over 1200 Gallons), Water/Coolant Level Sensors, Anhydrous Ammonia Level Sensors, LP Gas Level Sensors, Refrigeration Level Sensors, Tank Level Wireless Monitoring, and Industrial Gas/Cryogenic Level Sensors. The core product line includes mechanical gauges (6200 Series, 6400 Series, 6500/6700 Adjustable, 7200/7300 Series, 8400/8500/8700 Series), reed switch probes (9800, 9815, 9840), spiral gauges (8681, 8684, 8686, 8687), and advanced electronic sensors (T/LL series capacitance sensors, T/LL25X hydrostatic sensors, 9402 Guided Wave Radar). Add-on modules include R3D Remote-Ready Dials, 9704/9705 R3D Remote Ready Modules, and TwinSite Senders for industrial applications. Recent innovations include wireless/BLE-enabled products (TEK 920 PulseWave Radar BLE Sensor, 6318 Jr BLE Wireless Dial, SureSense Capacitance Sensor) and the Rochester Universal BLE App. The company was acquired by Amphenol Corporation in October 2025.

Differentiator

Problem solved

Functional benefit

Brands

• R3D: Rochester Remote Ready Dial technology for remote monitoring of tank levels
• TwinSite
• Magnetel
• SureSense
• PulseWave

Products and services

• Fuel/Oil Level Sensors Comprehensive range of liquid level sensors for measuring fuel and oil levels in various tank types, including gasoline, diesel, bio-diesel, hydraulic fluids, and lubricating oils, serving agricultural, construction, transportation, and industrial OEMs.
• Bulk Liquid/Fuel Level Sensors (Over 1200 Gallons) High-capacity liquid level measurement solutions for large bulk storage tanks exceeding 1200 gallons, supporting guided wave radar, mechanical float arm, and hydrostatic sensing technologies for industrial fuel storage and bulk inventory management.
• Water (non-potable)/Coolant Level Sensors Level sensors designed for measuring non-potable water and coolant levels in industrial applications, utilizing capacitance, guided wave radar, and reed sensor technologies for use in heavy equipment, marine, and engine cooling systems.
• Anhydrous Ammonia Level Sensors Specialized sensors for measuring anhydrous ammonia (NH3) levels in agricultural and industrial applications, featuring all-stainless steel construction for chemical service and UL listing for NH3 or LPG service.
• LP Gas Level Sensors Liquid level sensors for LP/propane gas applications including domestic tanks, DOT cylinders, and motor fuel tanks, featuring wireless monitoring capabilities and over-fill prevention devices, serving residential, commercial, and industrial propane distributors.
• Refrigeration Level Sensors Liquid level gauges for refrigerant monitoring in commercial refrigeration systems, rated up to 700 PSI for supermarket and industrial refrigeration applications, with voltage output for PLC/controller integration.
• Tank Level Wireless Monitoring Remote monitoring solutions for tank levels including BLE (Bluetooth Low Energy) sensors, cellular tank level monitors, and radar-based telemetry systems for distributed propane, industrial gas, and chemical storage tank installations.
• Industrial Gas/Cryogenic Level Sensors Level measurement solutions for industrial gases and cryogenic products including liquid CO2, featuring extended dial chambers for insulation and Magnetel technology for cryogenic storage and transport applications.
• 6200 Series Gauges Four bolt gauges for domestic tanks, DOT cylinders, and motor fuel applications measuring liquid levels of LP/propane, fuels, hydraulic fluids, refrigerants, lube oils, and cryogenic products. UL listed for LP/propane and flammable liquids service.
• 9402 Guided Wave Radar Gen 2 (GWRII) Digital technology guided wave radar transmitter with anodized aluminum header and stainless-steel waveguide, IP6K9K sealing, configurable up to 3 meters, ±3.0% FS accuracy, for mechanically challenging tanks.
• T/LL350 Capacitance Liquid Level Sensor Vertically mounted liquid level sensor with auto-compensation for changes in liquid dielectric constant, supporting automatic correction when switching between conventional diesel and bio-diesel. Provides ±2.0% accuracy with resistive, 4-20mA current, or voltage output options.
• TEK 920 PulseWave Radar BLE Sensor Radar BLE sensor for monitoring chemical tanks, fuel storage, and other liquid containers with precise real-time data 24/7 via Bluetooth Low Energy connectivity.
• SureSense Capacitance Propane Level Sensor Patent-pending capacitive level sensor for propane tanks offering game-changing measurement accuracy and unparalleled reliability for LP gas distribution and storage applications.
• TEK 880 Radar Cellular Tank Level Monitor FCC certified radar cellular tank level monitor for remote tank monitoring applications with cellular connectivity.
• 6318 Jr BLE Wireless Dial Remote-read BLE output sensor for ASME tanks and DOT cylinders, designed for use with the SureSense Capacitance Propane Level Sensor and wireless tank monitoring applications.
• e-Dial Magnetel Digital Gauge Magnetel digital gauge indicator for transports/bobtails and bulk storage tanks allowing temperature-compensated level readings in real-time.
• TLL15X Cut-to-Length Capacitive Sensor Capacitive fuel level sensor that can be cut to length and magnetically calibrated by the end user, available with resistive, voltage, or current output, 500mm sensor vibration tested to 6.3grms per BS EN 60068-2-64:2008.
• T/LL415 CAN J1939 Level Sensor Advanced capacitive level sensor that continuously monitors liquid level and temperature and broadcasts data via CAN J1939 output protocol for vehicle and industrial ECU integration.

Quantifiable outcome

• ±2.0% accuracy for T/LL350 capacitance sensors in diesel applications
• +2 more outcomes

Segments13 records

Ideal customer profiles5 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature8 records

Partnerships

Three partnerships are on record, tiered core.

• Tekelek Europe LimitedcoreStrategic or Co-development Partner · 30 May 2023Rochester Sensors acquired Tekelek Europe Limited, a company specializing in liquid level sensors and wireless monitoring technology primarily serving the fuels and lubricants industry in Europe. The acquisition enhances Rochester's offerings in wireless sensor technology and expands its European customer base.
• Digi-Key ElectronicscoreChannel Partner/ Reseller/ DistributorGlobal authorized distributor for Rochester Sensors products with immediate shipping and MOQ of one unit. Products available at www.digikey.com/en/supplier-centers/rochester-sensors.
• Mouser ElectronicscoreChannel Partner/ Reseller/ DistributorGlobal authorized distributor for Rochester Sensors products. Products available at www.mouser.com/manufacturer/amphenol-rochester-sensors.

Scale indicators5 records

Recent moves8 records

Expansion highlights5 records

Direct peers

• Endress+Hauser: Privately held German leader in industrial process instrumentation including level, pressure, flow, and analytical measurement. Directly comparable to Rochester Sensors in liquid level measurement and serves overlapping industrial customers, but at significantly larger scale with a full software/automation stack.
• VEGA Grieshaber: Specialist in level, switching, and pressure instrumentation using radar, capacitive, and other technologies. Highly comparable to Rochester's level sensor portfolio, particularly in the radar (VEGAPULS) and capacitance product lines, with stronger presence in process-industry bulk solids/liquids.
• Gems Sensors & Controls: Designs and manufactures liquid level sensors, flow sensors, and pressure switches for industrial, medical, and aerospace markets. Closely comparable to Rochester in liquid-level sensing technology breadth and OEM-channel go-to-market approach; a part of Fortive.
• Madison Company: US-based manufacturer of liquid level sensors, reed switches, float switches, and custom sensing solutions for OEMs. Closely comparable to Rochester in level-sensing technology and OEM-channel focus, with a similar mid-market industrial profile.
• Flowline: Specializes in liquid level measurement and control instrumentation including ultrasonic, radar, capacitance, and float-based sensors. Directly comparable to Rochester in product technology breadth and serves overlapping chemical, water/wastewater, and industrial tank applications.
• BinMaster: Manufactures level sensors and inventory management solutions for bulk solids and liquids in bins, tanks, and silos. Comparable to Rochester in liquid-level sensing technologies (capacitance, ultrasonic, radar) and shares several industrial verticals including agriculture and bulk storage.

Broad incumbents

• Emerson Electric (Rosemount): Through Rosemount and Branson, Emerson offers a full suite of process-level, pressure, and temperature instrumentation. Overlaps with Rochester in industrial tank level measurement but operates at massive scale with bundled automation, software, and services.
• Honeywell Sensing & Productivity Solutions: Offers a broad portfolio of industrial sensors including level and pressure products for aerospace, transportation, and industrial customers. Comparable to Rochester in sensing technology and end markets, but as part of a much larger diversified industrial conglomerate.
• Siemens Process Instrumentation: Supplies level, pressure, temperature, and flow instrumentation integrated with Siemens' automation and industrial software platforms. Comparable to Rochester in liquid level measurement products and many of the same industrial verticals, with much stronger software/automation positioning.
• Pepperl+Fuchs: Global supplier of industrial sensors including level, proximity, and ultrasonic products, with strong presence in hazardous-location and process-industry applications. Comparable to Rochester in industrial level sensing and certifications, but with broader factory-automation exposure.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks5 records

Key highlights7 records

Customer concentration

• Xx.com/rochestergauges
• Facebookfacebook.com/profile.php
• LinkedInlinkedin.com/company/rochestergaugesllc

Compliance18 records

Revenue estimate

Valuation estimate

Number of profiles

Subsidiaries1 record

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A1 record

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Rochester Sensors