Home > Blog
2026.10.19

Gear Flow Meters for Viscous and Corrosive Low Flow Dosing

We have provided customized flow measurement solutions for various clients dealing with high-viscosity, low-flow, and corrosive operating conditions. For instance, a polyurethane production line in Nigeria required the metering of a resin with a viscosity of approximately 2000 cP at a flow rate of less than 5 gallons per hour (approx. 19 liters per hour), with a requirement for a 4–20 mA output signal. Another chemical manufacturer needed to meter sulfur monochloride at flow rates of up to 2 liters per minute, requiring an RS485 output signal. The former application presented challenges primar......

2026.10.15

The Impact of Medium Viscosity on Oval Gear Flowmeters

We previously received an inquiry from a user in Mexico requesting a selection recommendation and a quote for an oval gear flowmeter (a type of positive displacement flowmeter). The application involved a DN100 pipe with a flow range of 150–2500 L/min, requiring an accuracy of ±0.2% and repeatability of ≤0.05%. The client had initially selected an oval gear flowmeter himself; however, upon further discussion, he clarified that the medium was “clean water,” with a maximum pressure of 40 bar and a maximum temperature of 80°C. Given that the medium was water, we recommended an electro......

2026.10.13

10000 psi Pressure Transducer 1/4 NPT

Sino-Inst supplies 10,000 psi pressure transducers, 1/4 NPT threaded mounting and a 1–5 VDC output. It is suitable for measuring the pressure of gases and liquids. 10,000 psi is equivalent to 68.95 MPa or 689.5 Bar. RFQ Benefits Stainless steel housing, suitable for environments prone to contamination. Features built-in damping to withstand instantaneous shocks and prevent damage from sudden overloads. Compatible with various media, including water, oil, gas, and hydraulic fluids, as well as applications like constant-pressure water supply. Excellent sealing performance, with optional IP65 or ......

2026.10.12

80GHz Radar for High Temperature Tank and Reactor Levels

For reactors, buffer knockout tanks and similar process equipment, operating temperatures tend to run high, and steam together with condensate commonly appear within the vessel gas space. When carrying out level measurement for such units, our preferred instrument option is the 80 GHz radar level transmitter. Regular grade 80GHz radar devices cover process temperatures from -40°C up to +200°C. Custom high-temperature variants can handle process temperatures as high as 1000°C, making them well-suited for hot-wall vessels where steam and condensation occur simultaneously. Below we go through the......

2026.10.11

Guided Wave Radar vs Pressure-Based Level Sensors

Guided wave radar and pressure-based level sensors are common contact-type instruments used for liquid level measurement in industrial storage tanks. Pressure-based level sensors represent a more traditional measurement method; they offer consistently stable performance and are highly trusted by users. Guided wave radar level transmitters utilize newer measurement technology, providing high accuracy and suitability for a wide range of complex operating conditions. The choice between guided wave radar and pressure-based level sensors should be determined based on actual operating parameters. RF......

2026.10.7

Non-Contact Level Measurement for NaOH Caustic Tanks

For a project involving level measurement in a sodium hydroxide (NaOH) storage tank, the client had previously used pressure-based level transmitters. Given the corrosive nature of the strong alkaline medium, we recommended an 80 GHz non-contact radar level transmitter; compared to ultrasonic alternatives, this instrument offers superior corrosion resistance and effectively handles in-tank condensation issues. Below is an in-depth comparison between non-contact radar level meters and ultrasonic level meters, covering practical measurement principles, applicable working conditions, and real-wor......

2026.10.3

RF Capacitance Level Transmitters for Turbine Oil Tanks

For a turbine oil tank level measurement project, the client specified an RF capacitance level transmitter with a 700mm coaxial rod probe and PTFE insulation. The operating conditions are 200°C and 24 bar, with a 4–20 mA + HART output and a 1.5″ BSP threaded connection. An assessment based on application experience confirms that an RF capacitance level transmitter configured with a coaxial probe and PTFE insulation is suitable for these 200°C operating conditions. However, the signal output and thread size require final verification before project implementation. Below, we outline the co......