Gauges - Dwyer
We offer pressure gauges, vital instruments that measure and indicate fluid or gas pressure within a system. These gauges are commonly employed in various industries, including manufacturing, oil and gas, automotiv...
Differential pressure gauges measure the difference between two pressure points. They show filter loading, flow through orifices, level in pressurized tanks and pressure drop across equipment.
DP Gauge Options
- Diaphragm DP gauges – low differential ranges
- Piston DP gauges – high line pressures
- DP gauges with switches – alarms and control
- Backflow test kits – backflow preventer testing
- Accessories – manifolds and mounting kits
Choosing a DP Gauge
Specify differential range, maximum line pressure, wetted materials and connection. Use 3-valve manifolds to protect gauges during startup.
Centro supplies differential pressure gauges and accessories.
Shop by type: Backflow Test Kits | Differential Pressure Gauge Accessories
Related categories: Pressure Gauges | Digital Gauges | Test Gauges | Commercial Gauges | Process Gauges
Manometers measure pressure and differential pressure by balancing it against a column of liquid, or with a digital sensor. They're the go-to tool for low-pressure measurement in HVAC, cleanrooms, combustion setup, gas lines and filter monitoring.
Manometer Types
- U-tube manometers – simple, accurate and no power required
- Inclined manometers – higher resolution for very low pressures
- Digital manometers – handheld instruments with data logging
- Differential pressure manometers – filter and duct monitoring
Choosing a Manometer
Select the range and units (inches of water column, Pa or mbar) for your application. Handheld digital models are convenient for technicians, while fixed liquid manometers provide continuous visual indication. Use the correct gauge fluid and keep the instrument level for accurate readings.
Centro offers manometers for HVAC, combustion and low-pressure process measurement.
Related categories: Gauges | Pressure Gauges | Gauge Parts & Accessories | Boiler Gauges
Industrial pressure gauges are built for the vibration, pulsation and rough handling found in plants, pump rooms and machinery. They give operators a dependable local reading of pressure in water, air, oil, steam and process lines.
Industrial Gauge Options
- Stainless steel cases – corrosion resistance and durability
- Liquid-filled gauges – dampen vibration and pulsation for steady readings
- Brass and stainless internals – match media compatibility
- Bottom and back connections – for line and panel mounting
- Dial sizes from 2" to 6" – readable at a distance
Selecting a Gauge
Choose a range so normal operating pressure sits in the middle of the dial, generally about twice the operating pressure. Use a liquid-filled gauge on pumps and compressors, and add a snubber for pressure spikes. Confirm the connection size and accuracy grade.
Centro carries industrial pressure gauges for plant, process and equipment applications.
Related categories: Pressure Gauges | Process Gauges | Commercial Gauges | Test Gauges | Differential Pressure Gauges
Digital pressure gauges give precise readings on a clear digital display. Many add data logging, min/max recording and selectable units.
Features
- High accuracy – 0.25% or better
- Easy-to-read displays – backlit LCDs
- Selectable units – psi, bar, kPa and more
- Battery and loop-powered – flexible installation
- Data logging – record pressure trends
Choosing a Gauge
Select range, accuracy, connection and power source. Digital gauges are ideal for test, calibration and precise monitoring.
Centro supplies digital pressure gauges.
Related categories: Pressure Gauges | Differential Pressure Gauges | Test Gauges | Commercial Gauges | Process Gauges
Gauge parts and accessories protect, mount and maintain pressure gauges. The right accessory improves accuracy and gauge life and makes installations safer.
Accessories Available
- Syphons – protect gauges from steam
- Snubbers – dampen pulsation
- Gauge valves and cocks – isolation for service
- Panel mounting kits and brackets – secure mounting
- Overpressure protectors – prevent damage from spikes
Choosing Accessories
Match thread sizes and materials to your gauge and process, and select protective devices for the conditions.
Centro supplies gauge parts and accessories.
Related categories: Gauges | Tridicators | Pressure Gauges | Manometers
Tridicators combine pressure (or altitude) and temperature readings in one gauge. They're standard on hot water boilers and hydronic heating systems.
Features
- Dual readings – pressure and temperature
- Altitude scale – feet of water for hydronic systems
- Brass construction – water service
- Standard connections – boiler tappings
Choosing a Tridicator
Select pressure and temperature ranges for the system, plus stem length and connection size. Replace gauges that read inaccurately.
Centro supplies tridicators for boilers and hydronic systems.
Related categories: Gauges | Gauge Parts & Accessories | Pressure Gauges | Manometers
Commercial pressure gauges cover HVAC, plumbing, fire protection and general building services. They're economical, easy to read and available in many standard ranges.
Commercial Gauge Options
- Dry and liquid-filled gauges – general service
- Brass internals – water, air and oil
- Common dial sizes – 2" to 4"
- Bottom and back connections – line or panel mounting
- Fire protection gauges – sprinkler system ratings
Choosing a Gauge
Select a range about twice normal operating pressure, and match connection size and dial type. Liquid-filled gauges handle vibration from pumps.
Centro supplies commercial gauges for HVAC, plumbing and building systems.
Related categories: Pressure Gauges | Test Gauges | Process Gauges | Differential Pressure Gauges | Industrial Gauges
Process pressure gauges are built for chemical, petrochemical, refining and power plant service. Heavy-duty cases, stainless wetted parts and high accuracy give dependable readings in demanding environments.
Process Gauge Features
- Solid-front safety cases – operator protection
- 316 stainless steel internals – corrosive media
- Liquid filling – vibration and pulsation damping
- Accuracy to 0.5% – precise readings
- 4.5" and 6" dials – easy reading
Choosing a Process Gauge
Choose range, accuracy, connection and materials suited to the process. Add diaphragm seals for corrosive, viscous or high-temperature media.
Centro supplies process gauges and accessories for plant instrumentation.
Related categories: Pressure Gauges | Commercial Gauges | Industrial Gauges | Test Gauges | Differential Pressure Gauges
Test gauges, also called calibration gauges, provide high-accuracy readings for checking and calibrating other instruments. They're essential tools for maintenance and instrument technicians.
Test Gauge Options
- Analog test gauges – 0.25% accuracy with mirror dials
- Digital test gauges – high accuracy and data logging
- Wide range selections – vacuum to high pressure
- Calibration certificates – traceable documentation
Choosing a Test Gauge
Select accuracy at least four times better than the instruments you're testing. Choose range and connection to match. Handle and store test gauges carefully to protect accuracy.
Centro supplies test gauges for calibration and verification.
Related categories: Pressure Gauges | Differential Pressure Gauges | Commercial Gauges | Digital Gauges | Process Gauges
Process controllers read signals from sensors and adjust outputs to hold temperature, pressure, flow or level at set point. They range from simple panel meters to advanced PID controllers.
Controller Products
- PID controllers – precise closed-loop control
- Process meters – display and alarm process signals
- Panel meters and displays – local indication
Choosing a Controller
Match inputs (thermocouple, RTD, mA, voltage) and outputs (relay, SSR, analog) to your process. Consider alarms, ramp/soak programming and communications. Panel size (1/16, 1/8, 1/4 DIN) affects layout.
Centro offers controllers and displays for process and temperature control.
Shop by type: Panel Meters and Displays | PID
Related categories: Instrumentation, Measurement and Control | Recorders | Pressure Control | Instrument/Compression Fittings | Flow Control
$57.60
Subject to factory lead times
$553.17
Subject to factory lead times
$885.38
Subject to factory lead times
$229.15
Subject to factory lead times
$601.34
Subject to factory lead times
$788.13
Subject to factory lead times
$127.30
Subject to factory lead times
$229.15
Subject to factory lead times
$66.61
Subject to factory lead times
$885.38
Subject to factory lead times
$177.45
Subject to factory lead times
$390.01
Subject to factory lead times
$357.79
Subject to factory lead times
$390.01
Subject to factory lead times
$390.01
Subject to factory lead times
$2,023.58$2,194.86
Subject to factory lead times
$805.63
Subject to factory lead times
$187.43
Subject to factory lead times
$935.34
Subject to factory lead times
$935.34
Subject to factory lead times
$260.96
Subject to factory lead times
$601.34
Subject to factory lead times
$390.01
Subject to factory lead times
$369.17
Subject to factory lead times
$57.60
Subject to factory lead times
$553.17
Subject to factory lead times
$885.38
Subject to factory lead times
$229.15
Subject to factory lead times
$601.34
Subject to factory lead times
$788.13
Subject to factory lead times
$127.30
Subject to factory lead times
$229.15
Subject to factory lead times
$66.61
Subject to factory lead times
$885.38
Subject to factory lead times
$177.45
Subject to factory lead times
$390.01
Subject to factory lead times
$357.79
Subject to factory lead times
$390.01
Subject to factory lead times
$390.01
Subject to factory lead times
$2,023.58$2,194.86
Subject to factory lead times
$805.63
Subject to factory lead times
$187.43
Subject to factory lead times
$935.34
Subject to factory lead times
$935.34
Subject to factory lead times
$260.96
Subject to factory lead times
$601.34
Subject to factory lead times
$390.01
Subject to factory lead times
$369.17
Subject to factory lead times