APHA-370

Hydrocarbon Monitor / THC Analyser

The APHA-370 offers continuous, high-precision monitoring of total hydrocarbons (THC), methane (CH₄), and non-methane hydrocarbons (NMHC) in ambient air. Using a flame ionization detector with cross-flow modulation technology, it delivers stable, interference-free readings with minimal maintenance.

Why Choose APHA-370

Multi-Gas Detection – Simultaneously measures THC, CH₄, and NMHC for comprehensive air analysis.
Stable, Drift-Free Performance – Single-detector cross-flow modulation maintains calibration with high baseline stability.
Low-Maintenance Design – Built-in sample pump and reference air system enable long-term operation with minimal servicing.
Environmental & Industry Ready – Ideal for ambient monitoring, clean-room contamination tracking, and methane purity checks.

Key Advantages of APHA-370

1.
Comprehensive Gas Monitoring

THC, CH₄ & NMHC

Delivers simultaneous measurement for complete hydrocarbon profiling.

2.
Reliable & Stable Output

Drift-Free Detection

Cross-flow modulation ensures long-term baseline accuracy without frequent re-calibration.

3.
Continuous Low-Maintenance Use

Integrated Operations

Includes internal pump and reference air system for uninterrupted monitoring.

4.
Ideal for Sensitive Environments

Ambient & Clean-Room Ready

Perfect for environmental studies and contamination control in semiconductor fabrication.

Technical Specifications of APHA-370

Measuring principle	Flame ionization detector(FID)
Applications	THC Measurement in ambient air
Measuring range	• standard : 0-5/ 10/ 25/ 50 ppm Can be controlled manually, automatically or externally Optional: measuring range extension 0-100 ppm. • max. measuring range ratio = 1:10
Limit of detection	0,022 ppm (3δ)
Repeatability	±1.0 % of full scale
Linearity	±1.0 % of full scale
flow rate	ca. 0,5 l/min
Response time (T₉₀)	< 60 sec. (lowest range)
Display	Concentration in ppm (ppb) or mg (µg)/m³
Compensation	pressure and temperatur
Languages	German, English, French, Japanese
Interfaces	RS-232C (Gesytec / HORIBA Protocol)
Options	• Ethernet Interface • Analooutput 0-1/10 V or 0(4) - 20 mA • Long-term data storage • Calibration units • Further options on request
Ambient temperature	0-40°C
Power supply	240 VAC, 50 Hz, ca. 170 VA
Dimensions	430(W) x 550(D) x 221(H) mm (5HE)
weight	Approx. 33 Kg.