What is the warranty period for this product?

We provide a 12-month warranty and after-sales service for this thermal flow switch.

What is the minimum order quantity (MOQ)?

The minimum order quantity is 10 pieces.

Is customization available for the probe material?

Yes, the probe material can be customized. Standard is SS304, but SS316L is also available as a customized option.

Thermal Type Liquid Gas Relay NPN PNP SS304 Probe Water Flow Switch

Name: Thermal Type Liquid Gas Relay NPN PNP SS304 Probe Water Flow Switch
Brand: Nanjing Hogen Technology Co.LTD
SKU: 2137858255

Jiangsu, ChinaNanjing Hogen Technology Co.LTD

US$100.00

1-49 Pieces

US$90.00

50-99 Pieces

US$80.00

100+ Pieces

Sample price:US$100.00/piece.Request sample

Product profile

Customization

Available

After-sales Service

12 Months

Warranty

12 Months

Model NO.

HFM500

Accuracy

±0.6-1%

Main Application

Water, Wastewater, Diesel Fuel, Fuel Oil, Corrosive Liquid/Gas

Size

DN10-50

Sensor

Plug-in

Application

Industrial Production

Type

Thermal Sensor

Measuring Media

Liquid, Air,Gas

Measuring Principle

Thermodynamic

Measurement Object

Closed Pipeline

Certification

JIS, DIN, ANS, GB, CE, ISO

Switch Type

Relay, NPN, PNP

Probe Material

SS304, SS316L/Ta Can Be Customized

Process Connection

1/2" 3/4" 1" Thread

Tri-Clamp

50.5mm

Transport Package

Carton, Wooden Case

Specification

SS304

Trademark

HIGHJOIN

Origin

China

HS Code

9026100000

Key features

Thermodynamic Measurement Principle: Uses thermal diffusion and temperature difference between two sensors to measure flow rate accurately.

Wide Measuring Range: Covers Water 1-150cm/s, Oil 3-300cm/s, and Air 20-2000cm/s for diverse industrial applications.

SS304 Probe Material: Constructed with SUS304 stainless steel probe for durability and corrosion resistance in various media.

Adjustable Switching Value: Switching point is continuously adjustable via potentiometer to match specific flow monitoring needs.

IP67 Protection Grade: Features an all-metal shell design with IP67 protection, ensuring safety and maintenance-free operation.

Multiple Output Options: Offers flexible output types including Relay, NPN, and PNP to suit different control system requirements.

Low Pressure Loss: Compact structure design ensures minimal pressure loss while maintaining high measurement accuracy.

12-Month Warranty: Comprehensive 12-month warranty and after-sales service support for all purchased flow switches.

Company profile

Importers and Exporters

Nanjing Hogen Technology Co.LTD

Jiangsu, China

CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedR&D Capacity: ODM Service Available CertifiedCustomization Options: Customization from Samples, Customization from Designs, etc. CertifiedExport Year: 1 Year CertifiedNearest Port: Shanghai PortAverage Response Time: ≤1.80h

AI-Powered supplier vetting

SummaryNanjing Hangjia Electronic Technology Co., Ltd., established in 2015, specializes in industrial automation and process-control products covering pressure, temperature, level, and flow measurement. The supplier reports ISO9001:2015 and CE certification, documented quality and service procedures, customization and ODM capabilities, recent new-product development, and OEM service for recognized brands. Its production setup includes assembly, laser welding and marking, aging, calibration, and testing lines, with finished-product inspection instructions followed uniformly. Export activity has lasted eight years and represents 51%–70% of total sales. Constraints include no valid manufacturing-capacity contract with related subcontractors, no overseas warehouse, showroom, agent, or branch, and no Fortune 500 customer cooperation reported. Financial information identifies records for 2021–2023 but provides no assessable financial results.

Supplier typeThe supplier is identified as a company specializing in the research, development, sales, and service of industrial automation and process-control equipment, including pressure, temperature, level, and flow products. This directly positions it as an industrial measurement and process-control supplier.

CertificationsThe supplier states that it follows the ISO9001 quality management system and holds an ISO9001:2015 management-system certificate; its products also have CE certification. These are explicit certifications relevant to quality management and product compliance.

After-Sales capabilityThe supplier describes customer service from technical consulting through customized production and reports written, implemented procedures for service assessment, corrective and preventive actions, and complaint handling. It offers training overseas but has no overseas agents or branches and reports service coverage in zero countries, indicating documented support capability with limited overseas service infrastructure.

R&D capabilityThe supplier reports R&D capability, new products during the past year, ODM services, and an available SDK. Its stated business scope also includes research and development, supporting a demonstrated ability to develop and adapt industrial automation products.

Production capacityThe supplier lists assembly, laser welding, laser marking, aging, calibration, and testing lines, and states that finished-product inspection instructions are uniformly followed. It also reports in-stock capability, while lacking a valid capacity contract with related subcontractors; the documented in-house facilities nevertheless provide explicit production evidence.

Customization capabilityThe supplier explicitly offers customization from samples and designs, full customization, minor customization, flexible customization, and ODM services. This breadth of stated options indicates strong flexibility for customer-specific requirements.

Client casesThe supplier reports cooperation with customers in construction machinery, water treatment, food and medicine, environmental protection, electric power, metallurgy, and shipbuilding, and states that it provides OEM services for recognized brands. However, it reports no cooperation with Fortune 500 companies, so the evidence supports broad sector experience but not top-tier multinational reference experience.

Product Q&A

Q:What is the working principle of this flow switch?

It adopts the principle of thermal diffusion. The temperature difference between two sensors serves as the basis for measuring flow rate; as flow increases, the temperature difference decreases.

Q:Which media can this flow switch measure?

It is suitable for measuring Water, Oil, Air, Wastewater, Diesel Fuel, Fuel Oil, and Corrosive Liquid/Gas in closed pipelines.

Q:What are the measuring ranges for different media?

Water: 1-150cm/s (sensitive: 1-60cm/s); Oil: 3-300cm/s (sensitive: 3-100cm/s); Air: 20-2000cm/s (sensitive: 20-700cm/s).

Q:How do I adjust the switching value?

Install the switch, remove the protection screw, and adjust the potentiometer. Make the first green LED bright exactly at the desired flow rate. Adjust further to change the switch point.

Q:What output types are available?

The output type is optional and includes Relay, NPN, and PNP to fit various industrial control systems.