Based on the thermal principle, the enclosed probe contains two resistors, one of which is heated as a detection resistor, and the
other is not heated as a reference resistor. When the medium flows, the heat on the heating resistor is taken away. The resistance
value is changed. The difference between the two resistances is used as a basis for judging the flow rate. No moving parts,
maintenance-free, easy to install, one model is suitable for multiple pipe diameter requirements. The closing volume is
continuously adjustable, with extremely low pressure loss and compact structure. The digital tube displays the flow trend and
switch status.
- Product Details
- {{item.text}}
Quick Details
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Brand Name:
-
XYT
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Model Number:
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QLK400
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Operating Temperature:
-
-20~70C
-
Range:
-
1...2000cm/s (water), 3...3000cm/s (oil), 10...8000 (air)
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Output:
-
4....20mA analog output
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Switch Type:
-
PNP, NPN, relay
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Power supply:
-
24V 20%VDC
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Power on:
-
400mA (PNP or NPN type),3A (relay type)
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Flow indicator:
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four-digit digital display
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Pressure range:
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200bar
-
Response time:
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1...5s,
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Protection Grade:
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IP67
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Explosion-proof grade:
-
ExdllCT6
Quick Details
-
Media Type:
-
Gas
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Flow Rate:
-
1...2000cm/s
-
Place of Origin:
-
Shaanxi, China
-
Brand Name:
-
XYT
-
Model Number:
-
QLK400
-
Operating Temperature:
-
-20~70C
-
Range:
-
1...2000cm/s (water), 3...3000cm/s (oil), 10...8000 (air)
-
Output:
-
4....20mA analog output
-
Switch Type:
-
PNP, NPN, relay
-
Power supply:
-
24V 20%VDC
-
Power on:
-
400mA (PNP or NPN type),3A (relay type)
-
Flow indicator:
-
four-digit digital display
-
Pressure range:
-
200bar
-
Response time:
-
1...5s,
-
Protection Grade:
-
IP67
-
Explosion-proof grade:
-
ExdllCT6
Product Description
QLK400 Flow switch
Main feature
Gas-liquid dual-purpose type, can be used in pneumatic and hydraulic systems, can be used for circulating water, cutting fluid and lubricating oil cut-off monitoring and pump idling protection. The flow rate range setting comparison table of different media.
Note: If the customer needs our company to calibrate the flow range before leaving the factory, the medium used and the specific flow must be provided.
Note: If the customer needs our company to calibrate the flow range before leaving the factory, the medium used and the specific flow must be provided.
|
Medium
|
water
|
Oil
|
Air
|
|
Setting range（cm/s）
|
1...2000
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2...3000
|
10...8000
|
Product Specification
Setting range: 1...2000cm/s (water), 3...3000cm/s (oil), 10...8000 (air)
Signal output: PNP, NPN, relay, 4....20mA analog output normally open + normally closed (SPDT)
Power supply: 24V±20%DC
Power on: Maximum 400mA (PNP or NPN type) Maximum 3A (relay type)
No-load current: maximum 80mA
Flow indicator: four-digit digital display Setting method: button setting
Pressure range: 200bar
Medium temperature change: <3°C/s
Medium temperature change: <3°C/s
Response time: 1...5s,
typical value 2s
Initialization time: about 4s
Electrical protection:reverse phase, short circuit, overload protection
Explosion-proof grade: ExdllCT6
Protection level: IP67
Medium temperature:-2O...7O°C
Ambient temperature: -2O...6O°C
Storage temperature: -2O...6O°C
Wiring mode: M12 connector / directly attached 2 meter cable optional
Material: Probe: Stainless Steel Housing: Cast Aluminum
Repeatability: ±1% of measured value
Dimension
Selection Guide
|
Thread
|
G12
|
|
|
G1/2
|
||
|
|
G14
|
|
|
G1/4
|
||
|
|
M
|
|
|
Customized
|
||
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Power supply
|
|
D
|
|
24V±20%
|
||
|
|
|
A
|
|
4......20mA
|
||
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Output
|
|
|
P
|
PNP
|
||
|
|
|
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N
|
NPN
|
||
|
|
|
|
G
|
Relay
|
||
|
|
|
|
R
|
normally open + normally closed（SPDT）
|
||
|
Customized
|
|
Q
|
|
Non standard
|
||
|
Length of probe
|
|
|
K
|
15mm—60mm
|
||
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