Advanced thermal gas mass flowmeter motherboard featuring RS485 Modbus, HART protocol, GPRS communication, temperature & pressure compensation, multiple outputs (4–20mA, 0–5V, 1–5V, 2–10V, 0–10V, frequency, equivalent pulse), dual relay alarm, split-mounted circular board design, and dual power options (220V AC / 24V DC). Designed for direct mass flow measurement of air, compressed air, natural gas, and biogas with no additional temperature/pressure sensors required.
Thermal Gas Mass Flowmeter Motherboard – Direct Mass Flow with Full Connectivity
This thermal gas mass flowmeter motherboard is a comprehensive signal processing and control unit designed for thermal dispersion technology. Unlike volumetric flowmeters, thermal mass flowmeters measure mass flow directly without the need for external temperature or pressure sensors — though this board also supports T/P compensation for hybrid or legacy applications. It is ideal for air, compressed air, natural gas, landfill gas, and biogas measurement in industrial and environmental monitoring applications.
Key Features & Functions
Communication Protocols
RS485 Modbus (standard)
HART protocol (bidirectional communication)
GPRS wireless communication (remote data transmission)
Analog & Pulse Outputs
4–20mA (isolated, sink/source selectable)
0–5V / 1–5V / 2–10V / 0–10V
Frequency output (scalable to flow rate or mass flow)
Equivalent pulse output (scaled pulse per mass unit)
Power Supply Options
220V AC (standard industrial)
24V DC (low voltage control systems)
Flow Compensation
Built-in temperature & pressure (T/P) compensation (for density correction or hybrid measurements)
Hardware & Control Features
Circular motherboard design with split-mounted function (remote display/sensor installation)
Dual relay alarm outputs (high/low flow, temperature, pressure, or device fault alarms)
Applications
Compressed air monitoring in manufacturing plants
Natural gas and biogas flow measurement
Air flow measurement for HVAC and combustion control
Landfill and flare gas monitoring
Industrial process gas measurement (nitrogen, oxygen, argon, etc.)
Why Choose This Motherboard
Direct mass flow measurement — no separate T/P sensors needed for most gases
Full output suite — compatible with any PLC, DCS, SCADA, or flow computer
Circular split design — ideal for compact or remote display installations
HART + GPRS + RS485 — supports both local digital networks and remote telemetry
Dual relay alarm — enables automated shutoff, alerts, or pump control
Dual power input — works in both plant (220V) and control cabinet (24V) environments