AnronX APT2000 Series In-Line Temperature, Pressure, Flow & Humidity Monitor

Overview

The AnronX APT2000 Series In-Line Temperature, Pressure, Flow & Humidity Monitor is an engineered solution for continuous, real-time monitoring of critical flue gas parameters in stationary emission sources. Designed for integration into Continuous Emission Monitoring Systems (CEMS), the APT2000 series provides traceable, stable measurements of gas temperature, static pressure, differential pressure (dynamic pressure), volumetric flow velocity, relative humidity, and ambient atmospheric pressure—parameters essential for accurate mass emission rate calculation per regulatory frameworks including EPA Method 2, ISO 16911-1, and HJ 75–2017. Its core measurement architecture relies on two validated physical principles: S-type Pitot tube-based differential pressure sensing for flow velocity derivation, and capacitive humidity sensing with active thermal regulation to prevent condensation-induced drift or sensor saturation.

Key Features

• Compact, modular mechanical design optimized for confined duct installations and retrofit applications in boiler stacks, kiln exhausts, and mine ventilation shafts.
• Patented pneumatic valve assembly (CN Patent No. ZL 2015 2 0152729.0) eliminates elastomeric tubing connections—reducing long-term leakage risk, calibration drift, and maintenance frequency.
• Simultaneous acquisition of five primary parameters: temperature (thermistor or RTD), static pressure, differential pressure, relative humidity, and local barometric pressure.
• Integrated temperature and pressure compensation algorithms compliant with ISO 5167 and ASME MFC-3M standards, enabling accurate volumetric-to-mass flow conversion under variable gas composition and thermal conditions.
• Full-range purge capability: programmable automatic reverse-purge cycles with real-time supply air pressure monitoring; manual purge override via front-panel interface.
• Dual-mode zero-point calibration—automated drift compensation during low-flow periods and field-accessible manual adjustment via HART or Modbus RTU.
• Backlit graphical display with real-time parameter visualization, status indicators, diagnostic alerts (e.g., sensor timeout, heater fault, pressure loss), and event logging with timestamped entries.

Sample Compatibility & Compliance

The APT2000 series is compatible with flue gases ranging from 0–200 °C (standard configuration) and up to 400 °C (high-temp option), with particulate loading ≤ 50 g/Nm³. It supports operation in corrosive environments when equipped with Hastelloy C-276 or 316L stainless steel probe housings. All variants meet IP65 ingress protection and comply with electromagnetic compatibility requirements per IEC 61326-1. Explosion-proof models (APT2000-EX, APT2000-HM-EX, APT2000-RM-EX) are certified to IECEx/ATEX Zone 1 (II 1G Ex ia IIC T4 Ga) and feature intrinsically safe circuitry with epoxy-encapsulated solenoid valves—enabling hot-swappable maintenance without system isolation. The device supports GLP/GMP-aligned audit trails when connected to compatible SCADA systems.

Software & Data Management

Data output is provided via isolated 4–20 mA analog channels (configurable per parameter), RS-485 Modbus RTU, and optional Ethernet/IP or Profibus DP interfaces. Firmware supports configurable sampling intervals (1–60 s), linearization tables for non-ideal gas behavior, and built-in data buffering (≥72 h at 1-min resolution). When integrated with AnronX’s optional CEMS Data Acquisition Unit (DAU-3000), the system enables full 21 CFR Part 11-compliant electronic records—including user authentication, change history, and digital signature support for validation documentation.

Applications

• Regulatory compliance monitoring for coal-fired power plants, cement clinker kilns, and waste incinerators under national emission standards (e.g., China’s GB 13223, EU’s IED Directive).
• Process optimization in metallurgical furnaces and glass melting tanks where real-time flue gas velocity and moisture content inform combustion efficiency tuning.
• Environmental health & safety (EHS) surveillance in underground mining operations requiring continuous ventilation airflow verification per MSHA 30 CFR Part 57.
• Performance verification of desulfurization (FGD) and denitrification (SCR/SNCR) systems through correlated flow-humidity-temperature trending.
• Baseline characterization during stack testing campaigns aligned with EPA Methods 2F, 4, and 3A.

FAQ

What standards does the APT2000 series reference for flow velocity calculation?
It implements ISO 16911-1:2013 and ASME MFC-3M–2022 methodologies for Pitot tube-based velocity profiling, including traverse point correction, compressibility factor application, and gas property lookup tables.
Can the humidity module operate reliably in saturated or dew-point conditions?
Yes—the capacitive sensor incorporates PID-controlled heating (±0.5 °C stability) to maintain probe surface temperature 5–10 °C above local dew point, preventing condensate formation and ensuring measurement continuity.
Is third-party calibration certification available?
Factory calibration is traceable to NIM (National Institute of Metrology, China) standards; accredited field calibration services—including uncertainty budgeting per ISO/IEC 17025—are offered by AnronX-certified service partners.
How is long-term drift mitigated in high-dust environments?
The sealed valve manifold and absence of flexible tubing eliminate particulate infiltration pathways; combined with scheduled reverse-purge cycles and auto-zero routines, typical drift remains <±0.5% FS/year under routine maintenance.
Does the APT2000-RM variant support direct integration with Rosemount 3051CD transmitters?
Yes—the RM variant includes native HART v7.5 communication and configurable range mapping to accept input from Rosemount 3051CD, 3051S, or similar high-accuracy differential pressure transmitters, preserving original metrological integrity.