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Bronkhorst Gas Flow Meter: Sourcing Mass Flow Controller Calibration Systems
Quick Answer
Silver Automation Instruments supplies thermal mass flow meters and mass flow controller calibration systems as direct alternatives to Bronkhorst gas flow meters. We configure instruments for air, nitrogen, CO2, biogas, and other industrial gases with 4-20 mA HART or RS485 Modbus outputs. Send us your gas type, flow range in Nm3/h or slm, pressure in bar, temperature in °C, and pipe size in DN for a specific quote.
Why Buyers Compare Bronkhorst Gas Flow Meter Options
Many engineers in process plants know Bronkhorst as a Dutch brand for low flow gas measurement and control. The instruments are common in laboratories, pilot plants, and OEM skids. But sourcing a direct replacement is not always simple. Lead times can stretch. Calibration drift remains a concern when a unit has been in service for five years or more.
We see this often. A customer in Vietnam needed nitrogen flow control for a coating line. The original Bronkhorst mass flow controller had failed after a power surge. They wanted the same footprint and electrical interface. We supplied a thermal mass flow controller with 4-20 mA HART, 24 V DC power, and N2 calibration. The installation took less than one day.
Mass Flow Controller Calibration Systems That Match Field Conditions
A calibration system is only useful when it matches the actual gas and operating range. We build reference skids around a Coriolis master meter or a thermal mass flow meter. The reference instrument has a calibration certificate traceable to national standards. The system includes pressure sensors, temperature sensors, and a bypass line for zero checks.
Typical calibration ranges cover 0 to 10 slm up to 0 to 3000 Nm3/h. Gas temperature range is -20 °C to 60 °C. Process pressure can be up to 10 bar for standard versions. For higher pressure we use stainless steel bodies and add compression fittings or flanges.
Most engineers skip this part. A reference meter that is calibrated for air will not be accurate for CO2 or methane unless the calibration standard covers the actual gas. So ask for a gas specific calibration certificate. We supply this as a standard document with the serial number, date, ambient temperature, and test points.
Product Range for Gas Flow Measurement
Silver Instruments offers inline thermal mass flow meters for DN15 to DN200. These work well for compressed air, biogas, natural gas, and flue gas. The output is 4-20 mA HART plus RS485 Modbus. Accuracy is ±1.5 percent of reading above 50 percent of range. Below that, accuracy is ±0.5 percent of full scale. Some applications need a Coriolis mass flow meter instead. That gives you ±0.2 percent of reading for gases and liquids, plus density output. A pressure transmitter completes the loop. You can use it for correction or for alarm limits.
For thermal mass flow controllers, we cover low flow ranges from 0 to 10 sccm up to 0 to 1000 slm. These are built with a laminar flow element or capillary sensor tube. The sensor tube material is 316L stainless steel as standard. The electronics are sealed in an IP65 housing. That makes the unit suitable for panel or field mount.
Where These Meters Are Installed
We have shipped gas flow meters to wastewater treatment plants in Australia. Food and beverage factories in the Philippines use them for CO2 injection and nitrogen blanketing. Chemical plants in Saudi Arabia use them for fuel gas measurement. For biogas from digesters, the medium is wet and dirty. A thermal mass meter can handle this if you ins
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In one case, a paint manufacturer in Southeast Asia needed a replacement for a Bronkhorst thermal gas meter on solvent vapor. We proposed a stainless steel thermal mass flow meter with PTFE coated sensor elements. It reduced their maintenance window because the sensor no longer clogged every month.
Calibration Gases and Reference Accuracy
We can calibrate thermal mass flow meters for air, nitrogen, argon, CO2, methane, propane, and natural gas mixtures. Tell us the gas composition if it is a mixture. We adjust the conversion factor and the calibration curve. For a calibrator, the reference meter accuracy matters more than the device under test. Because of this, we use a Coriolis master meter with 0.1 percent repeatability for low flow gas calibration. That gives you a reliable reference across a wide turndown.
Ask for a gas specific calibration certificate. We supply this as a standard document with the serial number, date, ambient temperature, and test points.
Replacing a Bronkhorst Unit Without Redesign
You do not need to change the pipe or the control loop in many cases. Check the process connection size and type. Bronkhorst low flow meters often use compression fittings, G thread, or NPT thread. We match the mechanical footprint. Check the supply voltage. Most MFC units run on 24 V DC or ±15 V DC. Confirm this from the existing wiring. Check the setpoint and output signal. Standard choices are 0 to 5 V, 0 to 10 V, 4-20 mA, and RS485 Modbus.
In practice, we recommend a photo of the nameplate and a sketch of the wire terminals. That saves time and avoids a wrong signal configuration.
Contact Silver Automation Instruments
For a quote, send us four data points. Send the gas type and composition. Send the flow range in Nm3/h or slm. Send the operating pressure in bar and temperature in °C. Send the pipe size in DN and the process connection type. We will reply with a model, lead time, and price range for the meter or calibration system.
Tel: +86-135-1213-1526
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FAQ
Can Silver Instruments supply a direct replacement for a Bronkhorst gas flow meter?
Yes. We match process connections, signal outputs, and gas calibration. Send us the original model number or a photo of the nameplate.
What gas types can you calibrate?
We calibrate for air, nitrogen, CO2, argon, methane, propane, and natural gas mixtures. For special gases such as hydrogen, we add a safety review and a stainless steel wetted path.
What is the accuracy of your thermal mass flow meter?
Standard accuracy is ±1.5 percent of reading above 50 percent of flow range. Low flow below 50 percent is ±0.5 percent of full scale. We also offer Coriolis mass flow meters with ±0.2 percent of reading for calibration systems.
Do you provide a complete mass flow controller calibration system?
Yes. We build a reference skid with a Coriolis master meter, pressure transmitter, temperature sensor, isolation valves, and a bypass line. The system can include a pressure regulator and a filter if the gas supply is dirty.
What is the lead time and price range?
Standard thermal mass flow meters ship in 10 to 15 working days after order confirmation. A small inline meter for air may start around 600 USD depending on the connection and range. A calibration system with a Coriolis master meter is quoted based on reference accuracy and wetted materials. Send us your flow range for a fixed price.