KANOMAX Model 6720-DP Handheld Differential Pressure Meter

Overview

The KANOMAX Model 6720-DP Handheld Differential Pressure Meter is an engineered solution for high-resolution, field-deployable differential pressure and air velocity measurement in regulated environments. Based on piezoresistive pressure transduction with temperature-compensated signal conditioning, the instrument delivers traceable, repeatable measurements across a wide dynamic range (–2500 to +2500 Pa) with a resolution of 0.001 Pa and accuracy specified as ±1.5% of reading ±0.25 Pa. Its dual-mode functionality supports both direct differential pressure sensing via flexible tubing connections and derived air velocity calculation using standardized pitot tubes or multi-point wind matrix probes—enabling compliance-driven applications such as biosafety cabinet face velocity verification (per NSF/ANSI 49), cleanroom pressure cascade validation (per ISO 14644-3), HVAC system balancing, and containment integrity assessment.

Key Features

• 4.3-inch full-color capacitive touchscreen interface with intuitive icon-based navigation and real-time graphical display of pressure trends and velocity profiles
• Integrated Bluetooth 5.0 module enabling secure wireless pairing with iOS and Android devices running the official KANOMAX SmartLink app
• On-device and mobile app-based data management: 8,000 internal memory slots; up to 10,000 entries synchronized and archived via the app
• Multi-parameter computation engine supporting automatic derivation of maximum, minimum, average, and cumulative values from time-series datasets
• K-factor calibration adjustment for probe-specific correction of pitot tube or wind matrix coefficients—critical for maintaining metrological traceability during field recalibration
• Low-power architecture: 4 × AA alkaline cells provide ≥14 hours of continuous operation; auto-sleep mode activates after 5 minutes of inactivity
• Robust mechanical design: lightweight (390 g) magnesium alloy housing rated IP54 for dust and splash resistance during portable use

Sample Compatibility & Compliance

The 6720-DP is validated for gaseous media only (air, nitrogen, clean dry air) and is not rated for corrosive, explosive, or particulate-laden streams. It meets the environmental and functional requirements of multiple international standards governing controlled environments—including ISO 14644-3 (cleanroom testing), ISO 14645-1 (microelectronics facilities), NSF/ANSI 49 (biosafety cabinets), and EU GMP Annex 1 (sterile manufacturing). While the device itself does not carry CE marking under the Measuring Instruments Directive (MID), its measurement performance aligns with EN 61000-6-3 (EMC immunity) and EN 61000-6-2 (industrial environment emissions). All firmware and app-based data handling support audit-ready timestamping and user-defined annotation—facilitating GLP/GMP-aligned record retention where electronic records are permitted per local regulatory interpretation.

Software & Data Management

The KANOMAX SmartLink mobile application (iOS/Android) serves as the primary interface for configuration, remote control, and post-processing. It enables real-time parameter setup (units, K-factor, sampling interval), live graphing of pressure differentials, and export of CSV-formatted datasets with embedded metadata (date/time, location tag, operator ID, probe type). USB-C cable connection permits direct PC transfer and compatibility with third-party analysis platforms including Microsoft Excel, MATLAB, and LabVIEW. The app implements local encryption of stored data and supports optional password protection—meeting baseline security expectations for non-clinical environmental monitoring systems. No cloud storage or external server dependency is required; all processing occurs locally on the host device.

Applications

• Biosafety cabinet (BSC) and fume hood face velocity mapping per NSF/ANSI 49 Section 5.2.1 and ISO 14644-3 Annex B
• Cleanroom pressure differential verification across classified zones (e.g., ISO Class 5 to ISO Class 8 corridors)
• HVAC duct static pressure profiling and fan performance curve generation
• Room-to-room airflow direction confirmation in pharmaceutical manufacturing suites
• Filter leak testing support via upstream/downstream pressure drop monitoring
• Commissioning and recommissioning of ventilation systems in hospitals, laboratories, and semiconductor fabrication facilities

FAQ

What pressure media are compatible with the 6720-DP?
The instrument is designed exclusively for clean, dry, non-corrosive gases—primarily ambient air and inert process gases such as nitrogen. Liquids, steam, or aerosol-laden streams will damage the sensor and void calibration.
Can the 6720-DP be used for ISO 14644-3 certification testing?
Yes—the device’s stated accuracy, resolution, and stability meet the minimum metrological requirements for differential pressure measurement in cleanroom classification protocols when operated within its specified temperature and humidity limits.
Is Bluetooth communication compliant with FDA 21 CFR Part 11?
The 6720-DP and SmartLink app do not implement electronic signature or audit trail features required for Part 11 compliance; however, exported CSV files may be imported into validated LIMS or ELN systems that provide those controls.
How is K-factor applied during velocity measurement?
K-factor is a dimensionless correction coefficient entered manually to compensate for probe-specific deviations from ideal pitot tube theory; it is applied in real time during velocity calculation using the formula v = K × √(2ΔP/ρ).
Does the unit include NIST-traceable calibration documentation?
A factory calibration certificate (not NIST-traceable by default) is supplied with each unit; optional UKAS-accredited calibration with full uncertainty budgeting is available upon request through authorized KANOMAX service centers.