Kanomax KA12 Four-Channel Thermal Anemometer

Overview

The Kanomax KA12 Four-Channel Thermal Anemometer is a precision-engineered environmental monitoring instrument designed for simultaneous, real-time measurement of air velocity across four independent channels. Utilizing constant-temperature anemometry (CTA) — a well-established thermal sensing principle — the KA12 maintains a heated sensor element at a fixed temperature differential relative to ambient air; convective heat loss is directly correlated to local airflow velocity. This method ensures high sensitivity at low velocities (<1 m/s) and stable linearity up to 50.0 m/s, making the system suitable for both laminar and turbulent flow characterization in controlled and semi-controlled environments. The KA12 is not a handheld spot-check device but a benchtop or rack-mountable data acquisition platform intended for continuous process monitoring, HVAC commissioning, cleanroom validation, and laboratory airflow mapping where multi-point spatial resolution and temporal consistency are critical.

Key Features

• Four synchronized analog input channels with galvanically isolated signal conditioning to prevent cross-talk and ground-loop interference.
• Support for ten standardized Kanomax thermal probe models (including KA01, KA02, KA03, KA04, KA05, KA06, KA07, KA08, KA09, and KA10), each calibrated individually and traceable to JIS Z 8000 and ISO/IEC 17025-accredited reference standards.
• Configurable analog output per channel: user-selectable 0–5 V DC or 4–20 mA signals, enabling direct integration with PLCs, SCADA systems, or building management systems (BMS) without external signal converters.
• Internal sampling rate up to 10 Hz per channel, with onboard buffer memory capable of storing up to 16,384 data points per channel before transfer to host software.
• Rugged aluminum alloy chassis with IP20-rated enclosure, optimized for stable operation in non-hazardous indoor environments compliant with IEC 61000-4 electromagnetic immunity standards.

Sample Compatibility & Compliance

The KA12 accommodates a broad range of Kanomax thermal anemometer probes, differing in stem diameter (from 1.6 mm to 8 mm), length (100–1000 mm), and sensor configuration (single-point, dual-point, or 3-axis variants). Probes are rated for use in non-corrosive, particle-free air streams within the specified operating humidity (2.0–98.0 %RH) and temperature (5–40 °C) ranges. While the instrument itself does not carry intrinsic safety certification, its analog outputs meet IEC 61000-6-2/6-4 immunity and emission requirements. For regulated environments — including pharmaceutical cleanrooms (ISO 14644-1 Class 5–8), HVAC performance verification (ASHRAE 111, ISO 16813), and GLP-compliant airflow studies — the KA12 supports audit-ready documentation when used with Kanomax’s validated software suite and calibrated probes bearing NIST-traceable calibration certificates.

Software & Data Management

The KA12 operates with Kanomax’s proprietary KAN-LOG software (Windows-based, compatible with Windows 10/11 64-bit). The software provides real-time channel visualization, configurable averaging intervals (1 s to 3600 s), statistical summary generation (mean, min/max, standard deviation), and time-series export in CSV, Excel (.xlsx), and XML formats. It supports full audit trail functionality, including user login tracking, parameter change logging, and report timestamping — features aligned with FDA 21 CFR Part 11 requirements when deployed with electronic signature modules and system access controls. Raw data files include embedded metadata: probe serial numbers, calibration expiration dates, channel gain settings, and environmental condition stamps.

Applications

• HVAC system balancing and duct traverse surveys per ASHRAE Guideline 12 and ISO 16813.
• Cleanroom unidirectional airflow uniformity testing and ISO 14644-3 Annex B compliance verification.
• Biological safety cabinet (BSC) and fume hood face velocity mapping during qualification and periodic re-certification.
• Industrial ventilation system assessment, including local exhaust capture velocity validation.
• Academic and industrial aerodynamics research requiring synchronized multi-point velocity acquisition in wind tunnels or environmental chambers.

FAQ

Can the KA12 be used outdoors or in high-humidity environments beyond 98% RH?

No. The instrument and its thermal probes are rated for indoor use only, with maximum operational humidity at 98.0 %RH. Prolonged exposure above this threshold may cause condensation on sensor elements, leading to drift or permanent damage.
Is probe calibration included with purchase?

Each probe ships with a factory calibration certificate traceable to JCSS (Japan Calibration Service System) standards. Annual recalibration is recommended and supported by Kanomax-certified service centers globally.
Does the KA12 support digital communication protocols such as Modbus or Ethernet/IP?

No. The KA12 communicates exclusively via USB 2.0 for configuration and data download, and analog outputs (0–5 V / 4–20 mA) for real-time process interfacing. It does not feature native digital fieldbus interfaces.
Can multiple KA12 units be synchronized for large-scale monitoring?

Yes — using external TTL trigger signals and shared timebase synchronization via the optional KAN-SYNC module, up to eight KA12 units can be coordinated for phase-aligned multi-node deployments.
What is the typical uncertainty of velocity measurement across the full range?

At 23 °C and 50 %RH, typical expanded uncertainty (k=2) is ±(0.05 m/s + 2% of reading) for 0–10 m/s, and ±(0.1 m/s + 3% of reading) for 10–50 m/s, based on probe-specific calibration reports.