

Flow Measurement Instruments
- Flow Meter Calibration Services
- Rheotherm Flow Instruments – Model 210R
- Rheotherm Flow Instruments – Model 210
- Thermal Mass Low Flow Liquid Meters
- Space-Qualified Flow Meter Electronics
- Thermal Mass Low Flow Gas Meters
- Thermal Duct Flow Meters for Air & Gas
- MaxExtractor Extraction Monitor
- Multi-Variable Process Meter
- Bidirectional Flow Meters
- RheoVac ® Multisensor Flow Monitors
- Flow Switches
- Instruments for Hazardous Locations
- In-Stock Rheotherm Instruments
- Custom Process Measurement
- Electronics Options
- Low Flow Controller
In-Stock Rheotherm Instruments
View our In-Stock Rheotherm Instruments

While most of our instruments are built to specific customer requirements for flow rates, temperature ranges, fluid compatibility, and process connections, we sometimes keep a surplus of instruments for our most common applications or sizes. These instruments can be quickly calibrated for your application. Contact us to learn more, or get a quote for a custom instrument for your exact specifications.
Stock instruments are listed below with our most common calibration ranges and temperatures. Wide flow or temperature ranges may incur additional calibration costs. Contact us for a specific quote for your application or to customize electronics output options.
- Low Flow Sterilization Flow Meter
- Explosion Proof Solvent/Fuel Flow Meter
- Duct Air Flow Meter / Switch
Low Flow Sterilization Flow Meter
Model No: 100-I-TU1/16-0/10-24V-10′

Starting at: $3475
This inline low-flow model with analog electronics is commonly integrated into sterilization systems and can be calibrated on a variety of fluids including bleach, hydrogen peroxide, and formaldehyde. Many other liquid and gas calibration options are available by request. The instrument can be calibrated for up to a 20:1 flow measurement turndown within an approximate range of 0.05 cc/min and 60 cc/min and is suitable for temperatures up to 140°F. The flowmeter is provided with a remote electronics board in a NEMA 4 enclosure with 10 feet of cable. It can be supplied with a 0-10V or 0-5V nonlinear flow output, or a linear flow output can be added as an additional feature. The instrument can be set up for 24V DC or 120/240V AC input power.
Contact Bionetics for an official quote today. Sales-flow@bionetics.com
Explosion Proof Solvent/Fuel Flow Meter
Model No: 210-XDT-TUL¼(SS)(½”SWAGE)(MB)-4/20-24V-FM

Starting at: $6895
This inline low-flow model with digital electronics is commonly integrated used measure the flow rate of solvents or fuels and can be calibrated on a variety of fluids including ethanol, isopropyl alcohol, naphtha, and jet fuel. Many other liquid and gas calibration options are available by request. The instrument can be calibrated for up to a 100:1 flow measurement turndown within an approximate range of 0.36 GPH and 60 GPH and is suitable for temperatures up to 140°F. The flowmeter has a display with infrared control interface, and is capable of displaying flow rate, totalized flow, and temperature, as well as making calibration adjustments in the field. It can be supplied with a flow output in 0-5 VDC, 0-10VDC, or 4-20mA, or a digital flow output can be added as an additional feature for HART or Modbus protocols. 24V DC input power is used. This instrument is FM approved for Class 1 Div 1 locations.
Contact Bionetics for an official quote today. Sales-flow@bionetics.com
Duct Air Flow Meter / Switch
Model No. Flow Switch: 100CS-I-PG/2I(ADJ)-S1-24V
Model No. Flow Meter: 210-I-PG/2I(ADJ)-4/20-24V

Starting at: $1475 for Flow Switch and $3865 for Flow Meter
This flow probe model comes with an adjustable height compression fitting, allowing it to be adapted to your specific duct size or diameter. It is available as a simple flow switch with relay output or a full-featured flow meter. Commonly used to measure flow rates for HVAC systems, fume removal ventilation systems, and more, the Rheotherm probe can be calibrated on a variety of gases including air, nitrogen, and even hydrogen. Many other calibration options are available by request. The instrument can be calibrated for a single switch point or up to a 100:1 flow measurement turndown within an approximate range of 25 to 25,000 SFPM and is suitable for temperatures up to 250°F. It can be supplied with either a relay output as a switch or a flow output in 0-5 VDC, 0-10VDC, or 4-20mA, or a digital flow output can be added as an additional feature for HART or Modbus protocols. The instrument is available in 24VDC or 120V AC power input configurations.
Contact Bionetics for an official quote today. Sales-flow@bionetics.com
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