Dwyer A3000-100CM Photohelic Pressure Switch Gauge Range

Dwyer A3000-100CM Photohelic Pressure Switch Gauge Range About

Dwyer A3000-100CM Photohelic Pressure Switch Gauge Range: 0-100 cm w.c.

Dwyer Instruments A3000-100CM

Photohelic Pressure Switch/Gage Range 0-100 cm w.c

Photohelic Switch/Gages function as versatile, Highly Repeatable Pressure Switches combined with a precise Pressure Gage employing the time-proven Magnehelic Gage Design. The Photohelic switch/Gage measures and controls positive, negative or differential pressures of air and compatible gases. Standard models are rated to 25 psig (1.7 bar) with options to 35 (2.4) or 80 (5.5 bar) psig. Single pressure 36000S models measure to 6000 psig (413 bar) with a 9000 psig (620 bar) rating. Two phototransistor actuated, DPDT relays are included for low/high limit control. Easy to adjust set point indicators are controlled by knobs located on the gage face. Individual set point deadband is one pointer width - less than 1% of full scale. Set points can be interlocked to provide variable deadband - ideal for control of fans, dampers, etc. Gage reading is continuous and unaffected by switch operation, even during loss of electrical power. Choose from full scale pressure ranges from a low 0-.25" (0-6 mm) w.c. up to 30 psi (21 bar); single positive pressure to 6000 psig (413 bar).

• Availability: Item ships in about Ships in 4-6 weeks
• Product Highlights
• Range 0-100 cm w.c.
• Specifications
• GAGE SPECIFICATIONS
• Service:Air and non-combustible, compatible gases.
• Wetted Materials:Consult Factory.
• Accuracy:2% of FS at 70F (21.1C).3% on -0 and 4% on -00 models.
• Pressure Limits:-20" Hg. to 25 psig (-0.677 to 1.72 bar). MP option; 35 psig (2.41 bar), HP option; 80 psig (5.52 bar).
• Temperature Limits:20 to 120F. (-6.67 to 48.9C). -20 to 120F (-28 to 48.9C) with low temperature option.
• Process Connections:1/8" female NPT.
• Size:4" (101.6 mm) dial face, 5" (127 mm) O.D. x 8-1/4" (209.55 mm).
• Weight:4 lb (1.81 kg).
• SWITCH SPECIFICATIONS
• Switch Type:Each set point has 2 Form C relays (DPDT).
• Repeatability:1% of FS.
• Electrical Rating:10 A @ 28 VDC,10 A @ 120,240 VAC.
• Electrical Connections:Screw terminals. Use 167F (75C) copper conductors only.
• Power Requirements:120 VAC, 50/60 Hz; 240 VAC & 24 VAC power optional.
• Mounting Orientation:Diaphragm in vertical position. Consult factory for other position orientations.
• Set Point Adjustment:Adjustable knobs on face.
• Agency Approvals:CE, CSA, UL.

Reliable Differential Pressure Monitoring

The Dwyer A3000-100CM offers robust differential pressure measurement and switch control in critical industrial settings like oil and gas. Its analog display and external set point adjustment knob allow real-time monitoring and swift configuration. The dual SPDT switches and AC electrical rating ensure compatibility with automation and safety circuits, all within a durable die-cast aluminum case designed for industrial reliability.


Versatile Mounting and Connection Options

Engineered for adaptability, this gauge supports flush, surface, or panel mounting. Duplicate 1/8" NPT female pressure connections on the back and side make installation flexible for a variety of piping layouts. The included mounting hardware and adjustment tool streamline setup, and the front panel's IP54 protection guards against dust and splashing water for secure performance.


Easy Operation and Compliance

Users benefit from easy-to-read analog dials featuring clear set point indicators. No external power supply is required for the gauge function, simplifying installation and maintenance. Certified to RoHS and CE standards, the A3000-100CM meets modern safety and environmental compliance benchmarks. Its durable, industrial-grade materials ensure extended service life even in harsh conditions.