TSI AP800 Digital Bluetooth Differential Pressure and Air Velocity Meter

Overview

The TSI AP800 Digital Bluetooth Differential Pressure and Air Velocity Meter is a precision-engineered, handheld instrument designed for HVAC commissioning, air system balancing, and environmental airflow diagnostics. Built on TSI’s AirPro™ platform architecture, the AP800 implements dual-sensor differential pressure measurement using a high-stability piezoresistive transducer with dedicated positive and negative ports—enabling simultaneous static pressure and differential pressure acquisition in ducts, filters, coils, and terminal devices. Integrated barometric pressure sensing allows real-time air density correction for accurate velocity calculation when used with Pitot tubes, conforming to ASHRAE Guideline 12 and ISO 16813 principles for indoor environment characterization. Its compact form factor, ruggedized enclosure, and OLED display support field-deployable operation under variable lighting and thermal conditions—making it suitable for both routine QA/QC tasks and complex system-level validation per ANSI/ASHRAE Standard 111 and EU Directive 2010/31/EU (EPBD) requirements.

Key Features

• Dual-mode measurement: Simultaneous differential pressure (ΔP) and static pressure (SP) acquisition with auto-zero function at power-on, eliminating manual zero drift compensation.
• Integrated barometric sensor (517.1–930.9 mmHg) enables automatic air density correction for Pitot-tube-derived velocity calculations—critical for compliance with ISO 12764 and ASTM D5467.
• OLED display with 10 mm digit height ensures legibility in low-light environments, including mechanical rooms and ceiling plenums.
• Bluetooth Low Energy (BLE) v5.0 interface enables secure, low-latency wireless communication with the AirPro Mobile application on iOS and Android devices—supporting real-time data streaming, remote configuration, and timestamped measurement logging.
• Onboard microSD card slot supports autonomous long-term data recording (up to 32+ hours on full charge) without external hardware—ideal for unattended monitoring during overnight or weekend system verification.
• Rechargeable 3500 mAh Li-ion battery with USB-C input; AC adapter (90–240 VAC, 5 VDC/2 A) included—designed for multi-shift field use without consumable battery replacement.
• Ergonomic housing with integrated hanging hook and tactile membrane keys (power and save) facilitates single-hand operation while suspended from ductwork or mounted on ladders.

Sample Compatibility & Compliance

The AP800 is compatible with standard stainless-steel Pitot tubes (8 mm diameter, lengths from 20 cm to 152 cm), static pressure probes (e.g., TSI part #800533), and flexible sampling tubing. It meets IEC 61000-4 electromagnetic compatibility standards and operates within Class II environmental conditions per IEC 60529 (IP54 equivalent for dust and water resistance). All factory calibrations are traceable to NIST standards, and each unit ships with an accredited calibration certificate compliant with ISO/IEC 17025 requirements. For regulated environments—including pharmaceutical cleanrooms (ISO 14644-3) and hospital HVAC systems—the AP800 supports audit-ready data export (CSV/Excel) with embedded timestamps, operator ID fields, and device serial number metadata—facilitating alignment with FDA 21 CFR Part 11 electronic record controls when paired with validated AirPro Mobile workflows.

Software & Data Management

The AP800 interfaces exclusively with the TSI AirPro Mobile application, which provides configurable measurement templates, customizable reporting dashboards, and automated calculation of derived parameters (e.g., volumetric flow rate, filter ΔP trends, duct velocity profiles). Data synchronization occurs via BLE with end-to-end encryption (AES-128), and local storage on microSD cards follows FAT32 formatting with write-protected directory structures to prevent accidental overwrites. Exported datasets include raw sensor values, environmental context (ambient temperature, barometric pressure), and user-defined annotations—enabling direct import into LIMS platforms or Excel-based QA documentation. Firmware updates are delivered over-the-air through the AirPro Cloud portal, ensuring continuous conformance with evolving industry measurement protocols.

Applications

• HVAC system commissioning and TAB (Testing, Adjusting, and Balancing) per NEBB Procedural Standards and SMACNA guidelines.
• Filter bank and coil pressure drop validation for energy efficiency audits and LEED EQ Credit 1 compliance.
• Room pressurization verification in isolation rooms, laboratories, and clean manufacturing suites.
• Pitot traverse measurements across rectangular and round ducts—supporting ASHRAE Fundamentals Chapter 43 methodologies.
• Exhaust hood face velocity assessment per ANSI Z9.5 and OSHA 1910.145 standards.
• Field verification of fan performance curves and system resistance characteristics.

FAQ

Does the AP800 require annual recalibration?
Yes—TSI recommends annual calibration against NIST-traceable references to maintain measurement integrity. Calibration intervals may be extended under documented GLP/GMP quality management systems with statistical process control evidence.
Can the AP800 store data without a mobile device present?
Yes—internal microSD card logging operates autonomously. Measurement intervals, trigger thresholds, and file naming conventions are programmable via AirPro Mobile prior to deployment.
Is the barometric pressure sensor compensated for temperature drift?
Yes—the integrated barometer includes onboard thermal compensation across the full operating range (5–45 °C), ensuring <±0.5% deviation in density-corrected velocity calculations.
What Pitot tube configurations are supported for velocity measurement?
All TSI-certified Pitot tubes with 8 mm outer diameter (part numbers 634634000–634634005) and custom-fabricated stainless-steel variants meeting ISO 10780 geometric tolerances.
Does the AP800 comply with FDA 21 CFR Part 11 for electronic records?
When used within a validated AirPro Mobile workflow—including user authentication, electronic signatures, and immutable audit trails—the system satisfies Part 11 requirements for electronic records and signatures in regulated life science facilities.