Dwyer Magnehelic® 2000-1KPA Differential Pressure Gauge
Posted on: 08/07/2026
Monitoring differential pressure in air ducts, filters, or cleanrooms requires a measurement device that offers high sensitivity, stability, and independence from a power source. The 2000-1KPA differential pressure gauge, part of the Series 2000 Magnehelic® by Dwyer (USA), is the go-to solution chosen by many HVAC engineers due to its proven reliability over decades in the market.
Introduction to Series 2000 Magnehelic® – Model 2000-1KPA
The 2000-1KPA is a mechanical differential pressure gauge utilizing Dwyer's proprietary Magnehelic® technology. It utilizes a diaphragm and a magnet to convert differential pressure into pointer movement, requiring absolutely no external power supply or batteries.
Model 2000-1KPA features a maximum scale of 1 kPa, making it ideal for low-range differential pressure applications that demand high sensitivity.
Technical Specifications
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Specification
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Details
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Product Series
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2000-1KPA (Series 2000 Magnehelic®)
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Manufacturer
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Dwyer (DwyerOmega) – US Brand
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Compatible Media
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Air and compatible, non-combustible gases
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Accuracy
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±2% of full scale @ 70°F (21.1°C)
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Pressure Limits
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-20 inHg to 15 psig (-0.677 to 1.034 bar)
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Temperature Limits
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20 to 140°F (-6.67 to 60°C)
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Dial Size
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4" diameter (101.6 mm)
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Process Connections
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Dual 1/8" female NPT ports (high and low pressure)
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Weight
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1 lb 2 oz (510 g)
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Certifications
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RoHS, CE, ATEX, UKCA
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Installation and Operating Guide
The 2000-1KPA differential pressure gauge is a mechanical instrument. Its installation and calibration are relatively straightforward, but specific positioning and procedures must be followed to ensure reading accuracy.
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Mounting Position: Select an installation location where the gauge face is always in a vertical position—this is the standard orientation required to guarantee the manufacturer-specified ±2% accuracy. (Note: If inclined or horizontal mounting is unavoidable, the gauge must be re-zeroed at its actual operating position.)
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Port Identification: Identify the High-pressure (High) and Low-pressure (Low) ports on the gauge body, which are clearly marked on the housing or in the accompanying technical documentation.
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Tubing Connection: Connect the pressure signal tubing (flexible plastic tubing or small copper tubing) from the measurement points on the air duct/equipment to the corresponding High and Low ports, ensuring leak-free connections.
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Zero Calibration: Prior to commissioning, check and adjust the pointer to the exact "0" position using the zero-adjustment screw on the front cover (while both ports are vented to the atmosphere with zero differential pressure).
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Operation: Apply pressure to the system and observe the pointer on the gauge dial to read the actual differential pressure value.
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Maintenance: Periodically clean the glass cover and recheck the zero point (approximately once every 6–12 months) to maintain long-term accuracy, especially in dusty environments.
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Caution: Do not install the gauge in areas subject to severe vibrations or temperatures outside the permissible range (20–140°F), as this can adversely affect accuracy and the lifespan of the internal diaphragm.
Practical Applications
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Differential pressure monitoring across air filters in AHU/FCU systems.
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Cleanroom differential pressure control in pharmaceutical, electronics, and food processing plants.
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Fan and air duct pressure monitoring in industrial ventilation systems.
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Medical applications: negative/positive pressure isolation rooms in hospitals.
Why Purchase the 2000-1KPA from DLK?
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Authentic Dwyer distributor, directly imported with full CO/CQ documentation.
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Expert consultation to help you select the right scale for your system requirements.
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Comprehensive catalogs, manuals, and datasheets provided to support engineering and construction.
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Transparent warranty policy and prompt technical support.
Contact DLK for Consultation & Quotation
Are you looking to buy an authentic Dwyer 2000-1KPA differential pressure gauge with full CO/CQ and fast nationwide delivery?
Contact DLK TRADING SERVICE COMPANY LIMITED immediately to receive tailored solutions and the best quotation from our technical team.