Dwyer Instruments, Inc.

Pressure Transmitter monitors HVAC equipment.
Electrical Equipment & Systems

Pressure Transmitter monitors HVAC equipment.

Series 629 Wet/Wet Transmitter monitors differential pressure on water chillers, coils, heat exchangers and pumps. Machined from brass and completely assembled to transmitter, optional 3-way integral valve manifold allows installer to isolate or combine pressures on high- and low-pressure ports. It also allows maintenance on transmitter without interrupting process. Bleed ports are provided to...

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Sight Flow Indicator facilitates installation and viewing.
Mining, Oil Drilling, Refining Products & Equipment

Sight Flow Indicator facilitates installation and viewing.

Rotor-style Series SFI-801 has clear polycarbonate body, which enables 360° viewing of red PBT rotor. It features pressure rating of 125 psi and temperature rating of 130°F. Optional A-711 output sensor has Vdc output with pulsing for flow totalization and proportional frequency change for flow rate. Indicator is made of all UV-stabilized materials for outdoor service. Output choices include 5...

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Controller suits pressure, velocity, and flow applications.
Agricultural & Farming Products

Controller suits pressure, velocity, and flow applications.

Series DH DigiHelic® Differential Pressure Controller achieves 0.5% FS accuracy on ranges from 5-100 in. wc. It provides 4-20 mA process output and 2 SPDT relays with adjustable dead bands. Housed in 1/8 DIN enclosure, unit operates from 120/220 Vac or 24 Vdc and includes Modbus® communications. User can select from variety of options, including security level; set point or set point and alarm...

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Digital Manometer is suited for field or laboratory use.
Test & Measurement

Digital Manometer is suited for field or laboratory use.

Model 476-0 features electronic zeroing to null out any minor pressure differences, and auto power off function that preserves battery life. Able to measure positive and negative pressure from -20 to +20 in. wc with ±1.5% FS accuracy, product is suitable for field or laboratory use. It can be utilized to set gas supply pressures, adjust regulators, verify pressure switch operation, and check...

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Differential Manometer features extruded aluminum case.
Test & Measurement

Differential Manometer features extruded aluminum case.

Digital Model 478-0 measures positive, negative, or differential pressures from -60 to +60 in. wc. It features selectable engineering units, Min/Max function, and backlight for poorly lit conditions. Hold key freezes current pressure measurement on display, while zero button nulls out any minor pressure differences. Device is suited for verifying filter condition, monitoring clean rooms,...

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Teflon Flowmeter suits corrosive liquid applications.
Test & Measurement

Teflon Flowmeter suits corrosive liquid applications.

Designed for in-line mounting, Series VAT Variable Area Teflon Flowmeter includes a removable protective shield and features 0-10 scale for flow indication. Each unit is individually leak tested and has leak integrity rating of 1 x 10-7 sccs Helium or better. Models, available with or without valve, are suited for high purity or corrosive liquid applications.

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Wet/Wet DP Transmitter suits HVAC applications.
Electrical Equipment & Systems

Wet/Wet DP Transmitter suits HVAC applications.

Series 629 Wet/Wet Differential Pressure Transmitter senses differential pressure of compatible gases or liquids and sends 4-20 mA output signal. Unit, designed for wetted parts of 316 and 316L stainless steel, contains pressure sensor that offers 0.5% FS accuracy on ranges from 10-100 psid. It comes in NEMA 4X housing that withstands temperatures to 200°F and is suited for monitoring...

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Handheld Digital Manometer is suited for technicians.
Test & Measurement

Handheld Digital Manometer is suited for technicians.

Series 477A contains differential pressure sensor that offers 0.1% FS accuracy on air ranges from 20 in. w.c. to 100 psid. It offers selectable engineering units, audible and visual overpressure alarms, and auto-zero function. With storage capacity for up to 20 readings, backlit unit is suited for maintenance personnel or technicians who require accurate standard to check instrumentation or...

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