About Dwyer A3204 Photohelic Pressure Switch Gauge
Dwyer A3204 Photohelic Pressure Switch Gauge Range 0-4 psi
Dwyer A3204 Photohelic Pressure Switch/Gauge (0-4 psi)
Model: A3204
Bezel and front cover (with set point knobs and zero adjustment screw) removed to expose Photohelic switch/gage set point mechanism. Cover is clear polycarbonate plastic. Gage pointer and light shutter are mounted on helix and balancing counterweight.
Dwyer A3204 Offers
Features
- Measure 4 to 20 mA signals without "breaking the loop"
- Measure mA signals for PLC and control system analog I/O
- Dual backlit display with both mA measurement and percent of 4 to 20 mA span
- Measurement Spotlight illuminates hard to see wires in dark enclosures
- Detachable clamp with extension cable for measurements in tight locations
- Measure 10 to 50 mA signals in older control systems using the 99.9 mA range
- Automatically change the 4 to 20 mA output for remote testing
- Power saving features,auto-off,backlight timeout extend battery life
- Hold function captures and displays changing measurements
Applications
- Air Conditioner Systems
- Clean Rooms
- Fume Exhaust Systems
- Dwyer A3204 Specifications
Switch Specifications
- Switch Type:Each set point has 2 Form C relays (DPDT)
- Repeatability:1% of FS
- Electrical Rating:10 A at 28 VDC,10 A at 120,240 VAC
- Electrical Connections:Screw terminals. Use 167F (75C) copper conductors only
- Power Requirements:120 VAC,50/60 Hz,240 VAC and 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
Gauge Specifications
- Service:Air and non-combustible, compatible gases
- Accuracy:2% of FS at 70F (21.1C),3% on -0,4% 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: female NPT
- Dimensions:4"(101.6 mm) dial face,5 x 8" (127 x 209.55 mm)
- Weight:4 lb (1.81 kg)
Precision Measurement TechnologyWith a 0-4 psi scale and up to 2% full-scale accuracy, the Dwyer A3204 Photohelic ensures precise monitoring and control of pressure in vital environments. Whether overseeing clean rooms or industrial pipelines, it delivers reliable data to support safety and compliance.
Durable & Versatile ConstructionCrafted from robust metal alloy with a clear glass dial face, this gauge can withstand challenging conditions. Its flexible mounting, multiple finish options-including matte, polished, antique, and galvanized-add to its suitability for varied industrial aesthetics.
Flexible Industrial ApplicationsTailored for use in air conditioning, clean rooms, and fume exhaust systems, the A3204's design supports a wide range of process media, including steam, oil, and gas. Its user-friendly panel mount enables easy integration into new or existing setups.
FAQ's of Dwyer A3204 Photohelic Pressure Switch Gauge:
Q: How does the Dwyer A3204 Photohelic Pressure Switch Gauge operate in different environments?
A: The Dwyer A3204 uses electro-mechanical technology to monitor and switch pressure settings in applications such as clean rooms, air conditioning systems, and fume exhaust systems, ensuring precise pressure control.
Q: What is the accuracy of the Dwyer A3204 across its pressure range?
A: At 70F (21.1C), the pressure gauge offers an accuracy of 2% of full scale for standard readings, 3% for the -0 model, and 4% for the -00 model, increasing reliability in critical monitoring applications.
Q: When is it advisable to use this gauge in a process system?
A: Use the A3204 when precise monitoring and quick detection of pressure deviations are essential, such as maintaining clean room standards or safe levels in exhaust and air conditioning systems.
Q: Where can the Dwyer A3204 be mounted for optimal performance?
A: It is designed for panel mounting, which allows seamless integration into control boards or equipment fronts, ensuring visibility and accessibility for monitoring and adjustments.
Q: What process media can this instrument measure?
A: The A3204 is engineered to handle steam, oil, and gas measurements, making it suitable for various industrial and HVAC applications requiring robust pressure monitoring.
Q: How does the gauge's material composition enhance durability?
A: Constructed with a metal alloy body, glass dial, and alloy pointer, along with finish options like galvanized or polished, the gauge resists corrosion and mechanical stress in demanding environments.
Q: What are the main benefits of using the Dwyer A3204 for exporters and manufacturers in India?
A: Its precision, reliability, and flexible use across multiple applications make it valuable for quality control, operational safety, and regulatory compliance-important for Indian industry exporters, manufacturers, and suppliers.