flow sensor switch with LED indicator site adjustable Thermal Flow Switch PNP/NPN

• Customization: Available
• Type: thermal flow switch
• Contact: Contact
• Model NO.: HFM500
• Output Signal Type: Switching Type
• Production Process: Integration
• Feature: SemiConductor
• Material: Stainless Steel
• IP Rating: IP67
• Certification: ISO9001
• Customized: Customized
• Electrical Connection: M12
• Housing: SUS304
• Wiring Method: M12 Connector
• Operation Temp: -20~80ºC
• Medium Temp: -20~80ºC
• Measuring range(water): 1...150cm/s (Most sensitive range 1...60cm/s)
• Measuring range(Oil): 3...300cm/s (Most sensitive range 3...100cm/s)
• Measuring range(Gas): 20...200M0cm/s (Most sensitive range 20...700cm/s)
• Power supply: 24VDC
• Output: NPN/PNP/Relay
• Display: 1*Red LED 1*Yellow LED 4*Green LED
• Initialization Time: 8s
• Response Time: 1...15s, related to thermal conductivity of medium
• Load capacity: 400mA max(NPN and PNP Type);1A max (Relay Type)
• Withstand pressure: 100Bar
• Transport Package: Carton
• Trademark: HIGHJOIN
• Origin: China
• HS Code: 90262010
• Production Capacity: 50000 Pieces / Year

Product Description

Product Features

1. All-metal shell design, no moving parts, maintenance-free and easy to install.
2. One model is suitable for various pipe diameter requirements. The switching value is continuously adjustable.
3. Pressure loss low
4. Compact structure. 6-LED displays flow trend and switching status.

Application: environmental protection water treatment, cooling water circulation, oil detection, welding equipment and laser system, etc

 

Overview

 

HFM500 thermal flow switch adopts the principle of thermal diffusion. The temperature difference between the two sensors can be used as the basis for measuring the flow rate. When the flow rate of the medium increases, the temperature difference decreases and vice versa. After processing, the temperature difference value is converted into standard electrical signal output and displayed.

 

Technical Parameters

Measuring Range
Water	1...150cm/s (Most sensitive range 1...60cm/s)
Oil	3...300cm/s(Most sensitive range 3...100cm/s)
Air	20...2000cm/s(Most sensitive range 20...700cm/s)
Measuring Medium	Water, Oil, Air
Withstand Voltage	100bar
Initialization Time	8s
Response Time	1...15s, related to thermal conductivity of medium, typical value 2s
Supply Voltage	24VDC
Wiring Protection	Reverse connect protection,Overload protection,Short circuit protection
Switched Output
Output type	PNP/NPN/ Relay Optional
Load Capacity	400mA max(NPN and PNP Type);1A max( Relay Type)
Display
Design	1  Red LED (Flow Rate< Switch Point)
	1 Yellow LED (Flow Rate= Switch Point)
	4  Green LED (Flow Rate> Switch Point)
Temperature
Operating Temp	-20~80ºC
Medium Temp	-20~80ºC
Storage Temp	-20~100ºC
Material
Housing	SUS304
Probe	SUS304
Protection Grade	IP67
Wiring Method	M12 Connector

Profiles

 

LED Functions and Settings
 

	The red light indicates that the current flow rate is below the set flow rate at the switch point, No action of switch
	The yellow light indicates that the current flow rate is equal to the set flow rate at the switch point, Switch motion
	The green light indicates that the current flow rate is higher than the set value of the switch point, the switch maintains output action. The more green lights there are, the faster the flow.

How to adjust?

1. Install the flow switch, remove the protection screw, make the medium flow at the flow rate that needs to be monitored.
2. adjust the potentiometer and make the first green LED bright exactly.

The switch then releases when the flow rate falls below the current value.
To make the switch point smaller than the current flow rate, adjust the potentiometer to make more green LED brighter.

Electronic Connection

 

	Signal	M12×1	Cable Outlet
	Power+	1	Brown
	Power-	3	Blue
	Switch 1	4	Black
	Switch 2	2	White
	4~20mA	5	Grey

PNP Output
NPN Output
Relay

Ordering Guide

Item NO.	Type
HFM500	Thermal flow switch
	Code	Thread Spec
	G14	G1/4
	G38	G3/8
	G12	G1/2
	G34	G3/4
	G1	G1
		Code	Output Signal
		R	Relay Output
		N	NPN output
		P	PNP output
			Code	Supply Power
			V1	24VDC
				Code	Length of the probe
				L	Fill out X directly
					Code	Electrical Connector
					M	M12
					Yn	Cable outlet, Standard n=1 meter
HFM500	G12	R	V1	L=18	M

 

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Certifications

1.    Q: Are you manufacturer or trading company?
        A: We are manufacturer which focuses on sensor for 10 years.

2.    Q: What's your quality control system?
        A: MC, ISO9001, CE Certificated.

3.    Q: What is the warranty of your products?
        A: Our warranty time is 18 months after shipment.
 

4.     Q: What is lead time of your product?

         A: Normally, our factory lead time is within 10~15 working days for products without customization. You can also check lead time detail with our sales depending on different items.
 

5.     Q: Do you provide customized products?

         A: Yes, we can laser mark your logo on products; OEM and ODM customization are welcomed.
 

6.     Q: What is your MOQ?

        A: We have no MOQ limit, small quantity order is acceptable.
 

7.     Q: What's the transport?                                                              

       A: Express such as DHL, FedEx, TNT, UPS for freight prepaid; and we can also use your own courier account to do the freight collect. For more goods we can arrange by air or by Sea.
 

8.     Q: What is your terms of payment ?
        A: We could accept T/T, Paypal, WU.