Dwyer Series 100 Portable Manometer Air Velocity Kit – Mechanical Pressure Gauge with Probes & Case

Dwyer Series 100 Portable Manometer Air Velocity Kit – Mechanical Pressure Gauge with Probes & Case

Condition: Used – May show signs of wear but fully functional

The Dwyer Series 100 Portable Manometer Air Velocity Kit is a mechanical, low-pressure differential gauge system designed for air velocity and static pressure measurement in HVAC systems, cleanrooms, fume hoods, and industrial airflow monitoring. This analog manometer uses a precision inclined-vertical tube design, providing accurate low-range pressure readings without requiring external power.
Paired with a full set of pitot tubes, tubing, and a rugged carrying case, this kit is ideal for technicians, air balance professionals, and commissioning agents working in variable air volume (VAV), duct balancing, or exhaust system applications. It remains a preferred tool due to its simplicity, durability, and field-proven reliability.

Specifications
Manufacturer: Dwyer Instruments
Model/Series: Series 100
Type: Portable Mechanical Manometer with Air Velocity Kit
Pressure Range: Typically 0–3″ w.c. or similar (verify on unit scale)
Scale Type: Inclined-vertical liquid column
Readout Format: Inches of water column (in. w.c.) and velocity via velocity charts
Accuracy: ±2% full scale (typical)
Fluid: Red gauge fluid (Dwyer 1211 or compatible)
Construction: Clear acrylic body with aluminum base and leveling feet
Manometer Dimensions: Approx. 16″ L x 5″ H x 2″ D
Included Components (varies):
Manometer
Pitot tube (9″ or 12″ stainless steel)
Flexible tubing
Velocity chart
Instructions/user guide
Carrying/storage case (foam or molded plastic)

Features
Portable, analog air measurement solution – no batteries or power required
Inclined-vertical scale for low pressure sensitivity and broad measurement range
Ideal for air velocity, static pressure, and differential pressure readings
Durable acrylic construction with integral leveling system
Comes with complete kit – includes pitot tube and tubing
Proven accuracy for field testing in HVAC and ventilation systems
Maintenance-free except fluid refilling and occasional zeroing

Applications
Widely used in:
HVAC system balancing and commissioning
Cleanroom airflow validation
Fume hood certification (ASHRAE 110 testing)
Industrial ventilation checks
Educational and lab airflow experiments
Exhaust duct air velocity checks
Filter static pressure drop measurements

Cross-Referenced Models
This Series 100 kit is often associated with or similar to:
Dwyer 1211 series (manometer-only version)
Dwyer 400 series kits (similar use with Magnehelic or digital gauges)
TSI Alnor Balometer systems (used in complementary applications)
Bacharach PCA kits (used with airflow measurement accessories)

Comparable Products
Dwyer Series 1211 Inclined Manometer – wall-mounted, fixed installation
TSI VelociCalc 9535/9565 – digital airflow meters (higher cost, electronic)
Extech HD350 Pitot Tube Anemometer – portable digital air velocity tool
Dwyer Digital Manometer 477 Series – electronic version for higher precision

Part of a Larger System
Typically used alongside:
Balometers or airflow hoods (for volumetric flow validation)
Duct traversing tools and diffusers
HVAC commissioning toolkits
Air filters and fan performance diagnostics

Related
Dwyer Series 100 portable manometer
Inclined manometer air velocity test kit
HVAC air flow testing equipment
Pitot tube manometer kit
Duct pressure testing mechanical gauge

Common Requests
“Is the kit complete?” ✅ Most used units are sold with manometer, tubing, and pitot tube – confirm on case contents.
“Does it need batteries?” ❌ No – completely mechanical.
“Can I measure air velocity directly?” ✅ Yes – using included pitot tube and conversion chart.
“Is the red gauge fluid included?” ⚠️ Sometimes – check fluid level. Compatible refill: Dwyer 1211 fluid.
“Can I calibrate or zero it?” ✅ Yes – leveling screws and bubble vial provided for setup.

All product names, trademarks, and registered trademarks are the property of their respective owners. Use of these names does not imply any affiliation or endorsement.

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