Gas Flow Meters and Switches

SRB Controls provides a wide range of gas flow meters and flow switches engineered for accuracy, reliability, and safety in compressed-air, natural-gas, and industrial-process environments. Our instruments from trusted manufacturers such as Krohne, King Instruments, and Weber deliver consistent performance across low and high flow ranges. Options include thermal mass, vortex, differential-pressure, and variable-area (rotameter) designs, supported by SRB’s commissioning, calibration, and verification services to ensure dependable energy measurement and system efficiency.

Gas Flow Meters and Switches

Our flow meters are designed to measure a wide range of gases in all types of environments.

Elster Diaphragm Gas Meter

Elster Diaphragm Gas Meter

image of a Delta M TrendMassTer TM6000 thermal mass flow meter from SRB Controls

Thermal Mass Flow Switches

Ensures safety with preset switching points, easy installation, high sensitivity, and optional relay or digital outputs for process integration.

image of a Delta M TrendMassTer TM6000 thermal mass flow meter from SRB Controls

Thermal Mass Flow Meters

Deliver direct mass flow measurement with low pressure drop and no moving parts, supporting SRB Controls’ gas flow and energy monitoring solutions.

Air Flow Switch

Air Flow Switch – 24 Vdc powered

Natural Gas and Air Flow Meter

Accurate, Direct mass‑flow Natural Gas and Air meter with hot‑tap insertion, 200 ms response, no moving parts, and Boiler MACT/EPA GHG compliance, with temperature and pressure compensation.

Mass Flow Meter and Controllers

Accurate gas mass flow measurement and control using thermal sensing. Fast response, high repeatability, optional digital outputs, and integrated control valves for automated dosing and process regulation.

Elster Diaphragm Gas Meter

Elster Diaphragm Gas Meter

image of a Delta M TrendMassTer TM6000 thermal mass flow meter from SRB Controls

Thermal Mass Flow Switches

Ensures safety with preset switching points, easy installation, high sensitivity, and optional relay or digital outputs for process integration.

image of a Delta M TrendMassTer TM6000 thermal mass flow meter from SRB Controls

Thermal Mass Flow Meters

Deliver direct mass flow measurement with low pressure drop and no moving parts, supporting SRB Controls’ gas flow and energy monitoring solutions.

Air Flow Switch

Air Flow Switch – 24 Vdc powered

Natural Gas and Air Flow Meter

Accurate, Direct mass‑flow Natural Gas and Air meter with hot‑tap insertion, 200 ms response, no moving parts, and Boiler MACT/EPA GHG compliance, with temperature and pressure compensation.

Mass Flow Meter and Controllers

Accurate gas mass flow measurement and control using thermal sensing. Fast response, high repeatability, optional digital outputs, and integrated control valves for automated dosing and process regulation.

Frequently Asked Questions About Gas Flow Measurement

What is the best gas flow meter for compressed air or nitrogen systems?

Thermal mass flow meters are typically preferred for compressed air, nitrogen, and other clean, dry gases because they provide direct mass-flow measurement without pressure or temperature compensation.

Can vortex meters measure both gas and steam?

Yes. Krohne Optiswirl vortex meters can handle both gases and steam by compensating for temperature and pressure. SRB helps configure the meter for your exact application.

What’s the difference between a thermal mass flow meter and a differential-pressure flow meter?

Thermal meters directly measure mass flow using heat transfer, while DP meters infer flow from a pressure drop across an orifice or venturi. Thermal designs generally offer lower maintenance and better accuracy for clean gases.

Can SRB help integrate gas flow meters into my building or plant monitoring system?

Yes. SRB can integrate Modbus or pulse outputs into MeterConnex, providing real-time monitoring and analytics for gas consumption and leak detection.