Mastering Industrial Measurement: The Complete Guide to DwyerOmega Sensing and Control Solutions
Your comprehensive resource for Dwyer and Omega instrumentation, from Magnehelic® gauges and temperature sensors to data loggers and process controllers, backed by Davis Controls expertise across Canada.
What You’ll Find in This Guide
- What Is Industrial Measurement and Why Precision Matters
- The Dwyer-Omega Combined Portfolio: Strength in Range
- Pressure Measurement Solutions
- Temperature Sensing and Control
- Data Acquisition and Logging
- Process Controllers and Signal Conditioning
- Flow Measurement Solutions
- Key Industries and Applications
- Selecting the Right Measurement Solution
- Davis Controls: Your DwyerOmega Partner in Canada
- Frequently Asked Questions
What Is Industrial Measurement and Why Precision Matters
Industrial measurement is the foundation of process control, quality assurance, and operational safety in every manufacturing and building environment. Whether monitoring differential pressure across a filter bank, tracking oven temperature in a pharmaceutical drying process, or logging humidity levels in a cleanroom, the accuracy of your instruments directly determines the quality of your output and the safety of your people.
In regulated industries like food and beverage, pharmaceutical manufacturing, and healthcare, measurement accuracy is not just a best practice. It is a compliance requirement. Instruments must be traceable, calibrated, and reliable enough to withstand audits from agencies like Health Canada, the FDA, and ISO certification bodies.
For Canadian facilities operating across HVAC, water treatment, food processing, laboratory research, and industrial manufacturing, selecting the right measurement instruments is a decision that affects every downstream process. The combined Dwyer and Omega product lines, available through Davis Controls, represent one of the broadest instrumentation portfolios in the industry.
The Dwyer-Omega Combined Portfolio: Strength in Range
Dwyer Instruments and Omega Engineering are two of the most recognized names in industrial instrumentation. With Omega now operating under the broader Dwyer family, their combined product portfolio creates an unmatched range of sensing, measurement, and control solutions. Understanding the strengths each brand brings helps you select the right instrument for your application.
Why the combination matters: Dwyer has built its reputation on pressure, airflow, and HVAC instrumentation since 1931, with the Magnehelic® gauge becoming an industry standard. Omega, founded in 1962, became the go-to source for temperature measurement, data acquisition, and process control. Together, they cover virtually every industrial measurement parameter from a single, unified source.
Dwyer Heritage: Pressure and Airflow Leadership
Dwyer Instruments has been manufacturing precision instruments in Michigan since 1931. The company pioneered the Magnehelic® differential pressure gauge, which remains one of the most widely installed instruments in HVAC, cleanroom, and industrial filtration applications worldwide. Dwyer’s product line extends well beyond gauges to include pressure transmitters, air velocity instruments, flow switches, valves, and level controls.
Omega Heritage: Temperature and Data Acquisition Excellence
Omega Engineering built its name on temperature measurement, offering one of the world’s largest selections of thermocouples, RTDs, thermistors, and infrared sensors. Beyond temperature, Omega developed a deep portfolio of data loggers, DAQ systems, process controllers, signal conditioners, and pH/conductivity instruments. Their technical resources and application engineering support have made them a trusted partner for research laboratories and process engineers globally.
A Unified Product Ecosystem
The integration of these two portfolios means that Canadian industry professionals can now source pressure gauges, temperature sensors, data loggers, process controllers, flow meters, and environmental monitoring equipment through a single distributor relationship with Davis Controls. This simplifies procurement, consolidates vendor management, and ensures consistent technical support across your entire instrumentation inventory.
Pressure Measurement Solutions
Pressure measurement is one of the most common and critical parameters in industrial processes. From monitoring filter condition in an HVAC system to verifying vessel pressure in a chemical reactor, the DwyerOmega portfolio offers instruments for every pressure application, measurement range, and accuracy requirement.
Magnehelic® Differential Pressure Gauges
The Dwyer Magnehelic® gauge is the industry standard for differential pressure measurement in HVAC, cleanroom, and filtration monitoring applications. With over 81 ranges available, from 0-0.05″ w.c. to 0-100 psi, the Magnehelic® provides accurate, reliable readings without the need for electrical power. Its patented magnetic linkage mechanism eliminates the friction and hysteresis common in mechanical gauge movements.
Key Capabilities
- Accuracy of ±2% of full scale
- 81+ ranges covering low and high differential pressures
- No electrical power required for operation
- Patented frictionless magnetic helix movement
- Available in panel mount, surface mount, and portable configurations
Digital Manometers and Pressure Instruments
For applications requiring digital readout, data logging, or higher accuracy, the DwyerOmega lineup includes handheld digital manometers, digital differential pressure gauges, and precision test instruments. These instruments offer selectable units of measure, min/max tracking, and data hold functions that simplify field measurement and troubleshooting tasks.
Key Capabilities
- Digital LCD displays with backlighting for low-light environments
- Selectable engineering units (Pa, mbar, kPa, psi, in. w.c.)
- Min/max/average data capture for trending
- Battery-powered for portable field use
- USB and wireless data output options on select models
Pressure Transmitters and Switches
When pressure data needs to feed into a PLC, BAS, or SCADA system, pressure transmitters convert the measured value into a standard 4-20 mA or 0-10 VDC signal. The DwyerOmega range covers gauge, absolute, and differential pressure transmitters in stainless steel, brass, and engineered plastic housings for compatibility with a wide variety of process media. Pressure switches provide simple on/off control for safety interlocks and alarm functions.
Key Capabilities
- Output signals: 4-20 mA, 0-5 VDC, 0-10 VDC, Modbus RTU
- Accuracy to ±0.25% of full scale on select models
- Wetted materials: 316L SS, Hastelloy, brass, ceramic
- Hazardous area approvals available (FM, CSA, ATEX)
- Pressure ranges from vacuum to 15,000 psi
Temperature Sensing and Control
Temperature is the most frequently measured process variable in industrial applications. The Omega side of the DwyerOmega portfolio is particularly strong here, offering one of the world’s largest selections of temperature sensors, from basic thermocouples and RTDs to advanced infrared pyrometers and fibre optic sensors.
Thermocouples
Thermocouples remain the most widely used temperature sensor in industry due to their wide temperature range, rugged construction, and fast response time. Omega offers thermocouples in every standard type (J, K, T, E, N, R, S, B) with probe assemblies, surface sensors, wire, and connectors to match virtually any installation requirement. Custom configurations are available for specialized applications.
Key Capabilities
- Temperature range from -270°C to +1,820°C depending on type
- All standard thermocouple types: J, K, T, E, N, R, S, B
- Sheath materials: 316 SS, Inconel, ceramic, platinum
- Grounded, ungrounded, and exposed junction options
- Custom lengths, diameters, and termination styles
RTDs (Resistance Temperature Detectors)
When higher accuracy and long-term stability are required, RTDs are the preferred sensor choice. Omega’s Pt100 and Pt1000 RTD assemblies offer accuracy classes from Class B (±0.30°C at 0°C) to Class AA (±0.10°C at 0°C), making them ideal for pharmaceutical, food processing, and laboratory applications where measurement uncertainty must be tightly controlled.
Key Capabilities
- Pt100 and Pt1000 elements in 2-wire, 3-wire, and 4-wire configurations
- Accuracy classes: Class B, Class A, Class AA (1/3 DIN), Class AAA (1/10 DIN)
- Operating range from -200°C to +850°C
- Thin-film and wire-wound element options
- Sanitary tri-clamp fittings for food and pharmaceutical applications
Infrared Temperature Sensors and Pyrometers
Non-contact infrared temperature measurement is essential for moving targets, hazardous environments, and surfaces that cannot accommodate a contact probe. The Omega infrared sensor range covers handheld spot pyrometers for maintenance rounds through to fixed-mount sensors with 4-20 mA or RS485 outputs for continuous process monitoring. Emissivity adjustment, laser sighting, and high-temperature models up to 3,000°C are available.
Key Capabilities
- Non-contact measurement from -40°C to +3,000°C
- Adjustable emissivity for accurate readings on different surfaces
- Fixed-mount sensors with analog and digital outputs
- Handheld models with laser targeting and data logging
- Fibre optic models for confined spaces and high-EMI environments
Data Acquisition and Logging
Collecting, storing, and analyzing measurement data is just as important as the accuracy of the sensors themselves. Omega’s data acquisition product line provides solutions ranging from simple standalone loggers to multi-channel networked DAQ systems that feed data directly into your facility’s monitoring and control infrastructure.
Standalone Data Loggers
Compact, battery-powered data loggers are the simplest way to capture temperature, humidity, pressure, and voltage data over time. Omega’s logger portfolio includes single-channel USB models that download data to a PC, multi-channel loggers with LCD displays, and ruggedized units rated for harsh industrial and outdoor environments. Many models carry NIST-traceable calibration certificates for regulatory compliance.
Key Capabilities
- Temperature, humidity, pressure, voltage, and current inputs
- Battery life up to 5 years on select models
- USB, Bluetooth, and Wi-Fi data transfer options
- Configurable alarm thresholds with visual and audible alerts
- NIST-traceable calibration certificates available
Wireless Monitoring Systems
For facilities that need real-time environmental monitoring across multiple zones, Omega’s wireless sensor networks eliminate the cost and complexity of running signal cables. Wireless transmitters placed throughout a facility communicate measurement data to a central gateway, which feeds the information to cloud-based dashboards, local servers, or building automation systems. Alerts via email and SMS ensure rapid response to out-of-spec conditions.
Key Capabilities
- Wireless range up to 300 m (line of sight), expandable with repeaters
- Cloud-based dashboards for remote monitoring from any device
- Email, SMS, and push notification alarms
- 21 CFR Part 11 compliant options for pharmaceutical environments
- Integration with BACnet, Modbus, and other building protocols
Multi-Channel DAQ Systems
For research, testing, and complex process monitoring, Omega’s multi-channel DAQ systems provide high-speed data acquisition with support for thermocouples, RTDs, strain gauges, voltage, current, and digital inputs on a single platform. These systems connect to PCs via USB or Ethernet and ship with software for configuration, real-time display, and data analysis. OPC and LabVIEW drivers ensure compatibility with existing automation and research platforms.
Key Capabilities
- 8 to 128+ input channels per system
- Sample rates up to 1 MHz for high-speed applications
- Universal inputs accepting TC, RTD, voltage, current, and strain
- USB and Ethernet connectivity with included software
- OPC, LabVIEW, and MATLAB drivers available
Process Controllers and Signal Conditioning
Measurement alone is not enough. Turning sensor data into control action is where process controllers and signal conditioners come in. Omega’s controller and signal conditioning product lines provide the intelligence layer between your sensors and your actuators, valves, heaters, and alarms.
PID Temperature and Process Controllers
Omega’s PID controllers are available in standard DIN panel sizes (1/32, 1/16, 1/8, and 1/4 DIN) and accept inputs from thermocouples, RTDs, and process signals. Features include auto-tuning PID algorithms, ramp/soak programming for multi-step processes, dual outputs for heat/cool applications, and communication interfaces for Modbus, Ethernet, and USB. These controllers are widely used in ovens, furnaces, heat treat processes, extruders, and environmental chambers.
Signal Conditioners and Isolators
Signal conditioners convert, amplify, isolate, and linearize sensor signals for input to PLCs, recorders, and SCADA systems. Omega’s DIN-rail-mounted signal conditioners accept thermocouple, RTD, millivolt, voltage, current, potentiometer, and frequency inputs. Isolation between input, output, and power circuits eliminates ground loop problems and protects sensitive equipment from electrical noise.
Panel Meters and Indicators
For local display of process variables, Omega’s panel meters provide large, easy-to-read digital displays in standard panel cutouts. Available with relay outputs for alarm functions, analog retransmission outputs, and serial communication, panel meters serve as both display instruments and simple controllers. High-visibility LED displays ensure readability in bright ambient light conditions.
Flow Measurement Solutions
Accurate flow measurement is essential for process control, energy management, and custody transfer in virtually every industry. The DwyerOmega portfolio includes flow instruments based on multiple measurement technologies, each suited to different fluids, pipe sizes, accuracy requirements, and installation constraints.
Air Velocity and Flow Instruments
Dwyer’s air velocity instruments include vane anemometers, thermal anemometers, and pitot tube assemblies for measuring airflow in ducts, fume hoods, and cleanroom environments. Paired with Magnehelic® gauges or digital manometers, these instruments are essential tools for HVAC commissioning, TAB (Testing, Adjusting, and Balancing), and ongoing facility maintenance.
Liquid Flow Meters and Switches
For liquid flow measurement, the portfolio covers electromagnetic flow meters for conductive liquids, turbine meters for clean fluids, variable area (rotameter) flow meters for visual indication, and ultrasonic flow meters for non-invasive measurement. Flow switches provide simple go/no-go detection for pump protection, cooling water verification, and safety interlocks.
Mass Flow Controllers and Meters
Omega’s mass flow controllers (MFCs) and mass flow meters provide direct mass flow measurement for gases, eliminating the need for pressure and temperature compensation. These instruments are critical for semiconductor processing, laboratory gas delivery, burner management, and any application where volumetric flow measurement is insufficient. Accuracy to ±1% of full scale and response times under 1 second are typical across the range.
Key Industries and Applications
DwyerOmega instrumentation serves a remarkably broad range of industries. The depth and breadth of the combined product portfolio means that most facilities can standardize on a single instrumentation source for the majority of their measurement needs.
| Industry | Common Applications | Key Products | Primary Benefit |
|---|---|---|---|
| HVAC & Building Automation | Filter monitoring, room pressurization, duct airflow, BAS integration | Magnehelic® gauges, pressure transmitters, air velocity sensors | Energy efficiency, IAQ compliance, filter cost optimization |
| Pharmaceutical & Biotech | Cleanroom monitoring, autoclave validation, cold chain, 21 CFR Part 11 | Wireless loggers, RTDs, validation thermocouples, panel meters | Regulatory compliance, data integrity, audit readiness |
| Food & Beverage | Oven profiling, pasteurization, CIP monitoring, cold storage | Sanitary RTDs, data loggers, PID controllers, flow meters | HACCP compliance, product safety, process consistency |
| Cleanrooms & Microelectronics | Room differential pressure, particle counting assist, HEPA verification | Magnehelic® gauges, low-range transmitters, digital manometers | ISO 14644 compliance, contamination prevention |
| Laboratories & Research | Environmental chambers, test stands, materials testing, R&D data collection | DAQ systems, precision RTDs, mass flow controllers, signal conditioners | Measurement precision, data traceability, software integration |
| Manufacturing & Process | Furnace control, heat treating, extrusion, boiler monitoring, compressed air | Thermocouples, PID controllers, pressure switches, flow switches | Process optimization, equipment protection, energy management |
Selecting the Right Measurement Solution
With tens of thousands of products in the DwyerOmega portfolio, narrowing down the right instrument for your application requires a structured approach. Here are the key factors to evaluate:
1. Measurement Parameter
Start with what you need to measure: pressure, temperature, flow, humidity, level, pH, or another variable. This immediately narrows the product category. For multi-parameter monitoring, consider whether standalone instruments or an integrated DAQ system is more appropriate.
2. Accuracy and Resolution
Determine the accuracy your process or regulatory environment requires. A Magnehelic® gauge at ±2% of full scale is perfectly adequate for filter monitoring, but a pharmaceutical validation application may demand an RTD with Class AAA (±0.03°C) accuracy. Over-specifying accuracy increases cost without adding value; under-specifying it creates compliance and quality risks.
3. Environment and Installation
Consider where the instrument will be installed. Outdoor, washdown, hazardous area, high-temperature, and high-vibration environments all impose specific requirements on materials, enclosures, and certifications. Dwyer and Omega both offer instruments with NEMA 4X, IP67, explosion-proof, and intrinsically safe ratings.
4. Output and Communication
How does the measurement data need to be used? A local display may be sufficient for some applications. Others require 4-20 mA signals for PLC input, Modbus for SCADA integration, or wireless transmission for cloud-based monitoring. Matching the instrument’s output to your system architecture avoids costly signal conditioning or protocol conversion later.
5. Calibration and Traceability
Regulated industries require instruments with traceable calibration. Many DwyerOmega products ship with NIST-traceable calibration certificates. For ongoing compliance, consider the calibration interval, whether in-house calibration is feasible, or whether you need a third-party calibration service. Davis Controls can advise on calibration programs and provide supporting documentation.
Davis Controls: Your DwyerOmega Partner in Canada
Davis Controls is an authorized distributor for both Dwyer Instruments and Omega Engineering, providing Canadian industry professionals with a complete instrumentation sourcing and support solution. As a full-service technical distributor, Davis Controls offers far more than order fulfillment.
Single-Source Convenience: With Davis Controls as your DwyerOmega partner, you can source pressure gauges, temperature sensors, data loggers, process controllers, flow meters, and accessories through a single purchase order, a single point of contact, and a single technical support relationship. This simplifies your supply chain and reduces the time your engineering team spends managing vendors.
What Davis Controls Brings to Your Project
- Application engineering support to select the right sensor, gauge, or controller for your specific process
- Broad inventory of DwyerOmega instruments with fast shipping across Canada
- Custom sensor assemblies and configurations for non-standard installation requirements
- Calibration support with NIST-traceable documentation for regulated industries
- System integration guidance for connecting instruments to PLCs, BAS, SCADA, and cloud platforms
- Technical training for your operations, maintenance, and quality assurance staff
- Online store at shop.daviscontrols.com for fast self-service ordering of common items
Frequently Asked Questions
What is the difference between Dwyer and Omega products?
Dwyer Instruments is best known for pressure measurement (including the Magnehelic® gauge), airflow instruments, and HVAC controls. Omega Engineering specializes in temperature sensors, data acquisition, and process controllers. With Omega now part of the Dwyer family, their combined portfolio is available as a single product line through Davis Controls, covering virtually every industrial measurement parameter.
How do I choose between a thermocouple and an RTD?
Thermocouples are best for wide temperature ranges (up to 1,820°C), fast response times, and rugged environments. RTDs offer higher accuracy and better long-term stability, making them the preferred choice for pharmaceutical, food, and laboratory applications where measurement uncertainty must be tightly controlled. If your process operates below 850°C and accuracy is critical, an RTD is usually the better choice.
What is a Magnehelic® gauge and where is it used?
The Magnehelic® gauge is a differential pressure gauge manufactured by Dwyer Instruments. It measures the pressure difference between two points, most commonly across air filters, clean room walls, or duct sections. It is the industry standard for HVAC filter monitoring, cleanroom pressurization verification, and air handling system balancing. Over 81 ranges are available, and the gauge requires no electrical power to operate.
Do DwyerOmega data loggers meet 21 CFR Part 11 requirements?
Select Omega wireless monitoring systems and data loggers are designed to comply with 21 CFR Part 11 requirements for electronic records and signatures. These systems include features such as audit trails, user authentication, time-stamped records, and tamper-evident data storage. Davis Controls can help you identify which specific models meet your regulatory requirements.
Can Davis Controls provide calibration certificates?
Yes. Many DwyerOmega instruments are available with NIST-traceable calibration certificates at the time of purchase. Davis Controls can also coordinate recalibration services for instruments already in service. For regulated environments, maintaining a documented calibration program is essential for audit compliance.
What communication protocols do DwyerOmega instruments support?
The portfolio supports a wide range of communication protocols including 4-20 mA analog, 0-10 VDC, Modbus RTU/TCP, BACnet, Ethernet/IP, HART, USB, Wi-Fi, Bluetooth, and proprietary wireless. The appropriate protocol depends on your existing control system infrastructure. Davis Controls’ application engineers can recommend the best output option for seamless integration with your PLCs, BAS, or SCADA system.
Does Davis Controls ship DwyerOmega products across all of Canada?
Yes. Davis Controls serves customers across all Canadian provinces and territories, with inventory stocked for fast shipping. For urgent requirements, expedited shipping options are available. The Davis Controls online store at shop.daviscontrols.com also provides 24/7 access to product information and ordering for standard catalog items.
How do I get started with a DwyerOmega instrumentation project?
Contact Davis Controls by phone at 1-800-701-4407 or through the website at daviscontrols.com/contact-us. Describe your application, the parameters you need to measure, your environment, and any regulatory requirements. A Davis Controls application engineer will recommend the right instruments, provide pricing, and support you through installation and commissioning.
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