Product 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.This product USES the all-metal shell design, 6 bit LED display flow trend and switch state.The product potentiometer is simple to set up and easy to operate, without any internal moving parts, maintenance-free, can measure a variety of media.
Features:
·Hydraulic/lubrication
·Pump protection
·The cooling system
·The ventilation system
·Water treatment
·Leak detection
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 |
Structure Drawings:
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. |
Install the flow switch, remove the protection screw, make the medium flow at the flow rate that needs to be monitored, 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 the green LED brighter.
Electrical Connections:
|
Signal |
M12×1 |
Cable Outlet |
| Power+ |
1 |
Brown |
| Power- |
3 |
Blue |
| Switch 1 |
4 |
Black |
| Switch 2 |
2 |
White |
| 4~20mA |
5 |
Grey |
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 |
Related Products:
Certification:
FAQ:
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.
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