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ZF-LZK Series Flow Switch
The ZF-LZK series flow switch is designed for monitoring liquid flow in pipelines and providing switch outputs. With a robust structure and stable performance, it is ideal for use in cooling and lubrication systems of generators, motors, mills, compressors, conveyors, and other machinery. The flow switch outputs a control signal when the flow exceeds or falls below a set threshold.
Category: Flow Switches
Flow Switches

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Overview:

Measurement Type: Displacement-based flow detection using a tapered tube and target

Output Options: Switch signal when flow exceeds or falls below the set point

Applications: Cooling and lubrication systems in industrial equipment such as generators, compressors, and motors

Flow Direction: Vertical, horizontal, or custom directions

Features: Magnetic coupling for accurate flow control, durable construction, clear flow display, and versatile installation options


Key Technical Specifications:

Measurement Range:

   o ZF-LZK1: 0.02 - 30 m³/h

   o ZF-LZK2: 0.02 - 30 m³/h

   o HZF-LZK3: 10 - 150 m³/h

Connection Types:

   o Threaded: 3/4" - 2 1/2"

   o Flanged: DN15-DN65 (1/2"-2 1/2"), DN80-DN200

   o Custom: Available on request

Materials:

   o Body: 304/316L stainless steel

   o Shell: Plastic

Measurement System: Target displacement with tapered tube (3 targets)

Flow Direction: Vertical (H), Horizontal (V), Custom (on request)

Maximum Operating Pressure:

   o Threaded: 4.0 MPa

   o Flanged: 4.0 MPa (ZF-LZK2), 1.6 MPa (HZF-LZK3)

   o Custom: Available on request

Medium Temperature (°C):

   o Standard: ≤120°C

   o Special: Available on request

Medium Viscosity (mPa.s):

   o Standard: ≤30

   o Special: Available on request

Switch Repeatability: ±2.5%

Measurement Accuracy: ±12%

Alarm Switch Types:

   o K1: 1 NC or 1 NO contact (bistable)

   o K2: 2 NC or 2 NO contacts (bistable)

   o KV1: 1 amplified relay switch contact (bistable)

   o KV2: 2 amplified relay switch contacts (bistable)

Contact Power:

   o K1, K2: Max 12VA (24VDC or 220VAC power supply, 24VDC preferred)

   o KV1, KV2: Max 1200VA (24VDC or 220VAC power supply)

Amplified Relay Power Supply: 220VAC, 24VDC

Response Time: 5-12ms

Protection Rating: IP65

Explosion-Proof Rating:

   o Intrinsically Safe: Exia Ⅱ CT5Ga

   o Flameproof: Exd Ⅱ CT5Gb

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