Integrated temperature and flow sensor NK300-T series

Principle Structure

The NK300-T series integrated thermal flow switch provides highly reliable and stable repetitive switch settings for various industrial applications. The sensor probe uses dual temperature sensors, with one temperature sensor connected to the heat source and the other temperature sensor separated from the heat source, providing temperature compensation during the process. When the flow rate changes, the temperature changes. The device can be used as a flow sensor or a flow switch within the range of the flow switch, and can detect ultra-low flow rates with an adjustable range of 300:1.

Product Features

No movable parts; The temperature can reach 100 ℃; The pressure can reach up to 100 bar; On site measurable flow and temperature; Small scale testing; Threaded and flanged connections, with the option to extend the probe; High reliability and cost-effectiveness.

Product Application

Common application

• Flow indication monitoring
• Flow monitoring of circulating water cooling furnace
• Unloading of oil tanker truck
• Can control the liquid in the stirred tank
• Safety diaphragm/safety valve flow control

The application of pumps

• Low flow control of pump
• Sealed leak detection
• Monitor bearing lubricating oil
• Airhole alarm
• Chemical feed pump sensor

Application Field

This device is suitable for any liquid, gas, and mud. The principle of integrated operation ensures reliability and repeated handling of very viscous liquids. Electronic switches are highly reliable for both single point and double point switching points. This device can simultaneously monitor and detect flow rate and temperature.

Technical Specifications

• Setting range: (water) 1-150cm/s, (oil) 3-300cm/s
• (Air) 20-2000cm/s
• Signal output: PNP, NPN, relay, analog (4-20mA)
• Normally open+normally closed (SPDT)
• Power supply: 24V ± 20% DC or 230V ± 15% AC
• Connecting current: maximum 400mA (PNP or NPN type)
• Maximum 4A (relay type)
• No load current: maximum 80mA
• Flow indicator: LED row (6 pieces)
• Setting method: Potentiometer setting
• Pressure resistance range: 100bar
• Temperature alarm: PT100 (0 ⸺ 100 ℃ optional)
• Response time: 1-13s, typical value of 2s
• Initialization time: approximately 8 seconds
• Electrical protection: reverse phase, short circuit, overload protection
• Protection level: IP67
• Medium temperature: -20 ° C to 80 ° C
• Environmental temperature: -20 ° C to 80 ° C
• Storage temperature: -20 ° C to 100 ° C
• Wiring method: M12 connector/directly attached 2-wire optional 2)
• Material: Probe, Stainless Steel Shell, PBT
• Weight: 0.4kg

Size Chart

Wiring Diagram