HVAC / Building Automation Solutions

Customers say the extremely high sensitivity and great repeatability make this the best pressure switch ever made

Set point and deadband are easily adjustable, can be mounted in any orientation, simple & reliable

Measures gas pressure with ± 0.5% of full-scale accuracy, designed for easy installation, user selectable units

Quickly and accurately measures air velocity or volumetric flow in imperial or metric units

± 5% or ± 8% full scale accuracy, NEMA 6 (IP67) enclosure rating; two sensing elements

Field adjustable with simple indicating pointer, vacuum and pressure ranges, stainless steel construction

Designed for pressure, vacuum, and differential pressures

Offers field adjustments and can handle system pressures up to 6000 PSIG

Equipped with high proof pressure capabilities, available with either spade terminals or flying leads

15 A SPDT switch for direct control of pumps and motors, pressure, vacuum, or compound ranges available

Designed to measure pressures as low as 0.1 in w.c. with ±0.4% accuracy, features 15 psid overpressure

Compact & lightweight, ± 0.8% FS accuracy, can withstand up to 15 PSIG overpressure with no damage to the unit

Capable of measuring low pressures with a ± 1% accuracy

Push-activated zero function and an associated LED light indicator, 2-wire, 4 - 20 mA output

Temperature compensated units, provides a 4 - 20 mA output signal which can be interfaced with chart recorders, data loggers, and more

Quick response capacitance sensor delivers a 4 - 20 mA output signal and ± 0.25% accuracy

Remote probe construction allows for remotely mounting the electronic enclosure for easier accessibility

Advanced design, precision construction, compact size, and repeatability; with set points from 0.07 in W.C. to 20 in W.C.

Low-cost, direct reading instrument to measure air velocity and static pressure in dirty air flow applications

Measuring pressures of liquids, gases, and vapors with a 0.5% F.S. accuracy, a 4 - 20 mA output, and a NEMA 4X enclosure

Monitors differential pressure of air and compatible gases and liquids with 0.5% accuracy

Senses very low pressures of air and non-combustible, compatible gases

Positive, negative and differential pressures can be measured within a full span accuracy of ± 0.25, NEMA 4X enclosure

Simple calibration push-button sets back zero and span, ± 0.25, ± 1, or ± 2% accuracy

Senses the pressure of air & compatible gases

Capable of measuring the pressures and flow of air or non-conducting gases at high resolutions

Ultra thin silicon diaphragm, high accuracy at low pressure ranges, NEMA 4X enclosure

Calibrated to 0.25% full scale accuracy, ranges from 0.1 in W.C. - 25 in W.C.

Very low ranges with exceptional stability, reliability, and either a ± 0.25% or ± 0.5% accuracy

Visual monitoring and electronic control of very low differential pressure with an easy-to-read gage in durable and rugged housing

Versatile, handheld, battery operated manometers

Measures positive, negative, or differential pressures of air and natural gases with a large, easy-to-read LCD

Inclined range bore has a length of 20 in, accuracy to ± 0.25%, and parallax-free reading

Microprocessor-based high performance transmitter.

Microprocessor-based high performance transmitter

Highly repeatable differential pressure switch, easy-to-read analog pressure gage & adjustable switch setting,

Precision machined, virtually unbreakable and free of distortion.

Small size and low price with 2% repeatability, wide range of models from 0.07 in W.C. - 85 in W.C.

Visual set point adjustment, adjustable null zone, and functions as a null switch

Visual set point adjustment in 5 standard ranges (0.05 in W.C. - 12 in W.C.) with repetitive accuracy within ± 1%

Diaphragm sealed leak proof construction provide high reliability repetitive accuracy within ± 1%

Provides highly accurate positive, negative, or differential pressure readings without the need for moving parts, hidden wells, or...

Measure positive, negative and differential pressures up to 100 PSI

Safety traps to prevent loss of fluid, easy roll up for transport and storage

Clear shatterproof indicating tube

Use this sensitive Dwyer unit to measure low air velocities at a low cost

HVAC transmitters for relative humidity, temperature and dew point with ±2.0 %rh / 0.3 K system accuracy

Compact True-RMS meter for HVAC troubleshooting