Product Description
Series HM28 Handheld Digital Pressure Manometer – 0–120″ w.c. / 30 kPa, Model HM28D3F10000
The Series HM28 handheld digital manometer is built for technicians, commissioning agents, and calibration labs that need portable, high-accuracy pressure measurement across wide low-pressure ranges. Covering 0–120 inches of water column (30 kPa), this unit supports differential, gauge, and absolute measurement modes with selectable accuracy tiers down to ±0.05% full scale.
Compact and rugged, the HM28 excels in HVAC balancing, filter diagnostics, room pressurization studies, and industrial troubleshooting. Every instrument ships with a calibration certificate, enabling use as a secondary calibration reference for verifying transmitters, regulators, and process instrumentation.
Wide-Range Low-Pressure Measurement & Key Specifications
• Pressure Range: 0–120″ w.c. / 30 kPa
• Accuracy Options: ±0.20%, ±0.10%, or ±0.05% FS (per order code)
• Measurement Modes: Differential, gauge, absolute
• Media Compatibility: Air and compatible gases
• Wetted Materials: 18/8 stainless steel
• Display: Two-line LCD with adjustable character size
• Memory: 964 readings
• Logging Intervals: 1–60 seconds or manual
• Power: 9V battery or 7–14 VDC external
• Ingress Protection: IP54 / NEMA 3
• Pressure Ports: 4/6 mm hose or 1/8″ NPT
• Approvals: CE
High-Speed Sampling & RS-232 Output
With rapid measurement rates and RS-232 connectivity, the HM28 captures transient pressure changes during duct testing, airflow commissioning, and containment verification. Data downloads simplify reporting for audits, commissioning records, and compliance programs.
The durable housing and low power draw make this instrument ideal for mobile field teams and laboratory benches alike.
Why Professionals Choose the HM28 Handheld Series
✔ Portable handheld design for HVAC and field diagnostics
✔ Differential, gauge, and absolute modes
✔ Accuracy tiers to ±0.05% FS
✔ Included calibration certificate
✔ Data logging with PC download
✔ RS-232 output
✔ IP54 enclosure for industrial environments
