Product Description
1.NOTE:
1. To prevent particles or debris from entering the sensor, a filter screen must be installed at the water inlet.
2. The flow sensor must be installed indoors or inside equipment. Avoid exposing it to outdoor environments, humidity, high temperature, or harsh conditions. Install the sensor away from vibration or shaking to ensure measurement accuracy.
3.Keep the sensor away from magnetic materials or devices that generate magnetic fields, as these may affect the sensor’s performance.
Model | Connection | Flow Range | Material | Power Supply | Feature |
S201 | G1/2 | 1–30 L/min | Nylon (Black/White ) | DC 3.5–24V | Color option |
S201A | G1/2 | 1–30 L/min | Black Ceramic Shaft | DC 3.5–24V | Enhanced Shaft |
S201B | G1/2 | 1–30 L/min | Nylon(White / Black / Gray) | DC 3.5–24V | Color option |
S201C | G1/2 | 1–25 L/min | Nylon or PC | DC 3.5–24V | Material Option |
YS168 | G1/2 | 0.5–10 L/min | Nylon | DC 5–18V | Waterproof |
2.Parameters
Parameter | YF-S201 | YF-S168 |
Model | YF-S201 | YF-S168 |
Thread Size | G1/2 | G1/2 |
Voltage Range | 3.5–24VDC | 5–18VDC |
Inner Diameter | 10.9 mm | 12.8 mm |
Outer Diameter | 20 mm | 20.2 mm |
Thread Length | Inlet: 12.5 mm / Outlet: 14.5 mm | 18 mm |
Pressure Resistance | ≤1.75 MPa | ≤1.75 MPa |
Suitable Medium | Purified water | Purified water |
Body Material | Nylon | Nylon |
Medium Temperature | -20°C ~ 100°C | -20°C ~ 100°C |
Insulation Resistance | >100MΩ | >100MΩ |
Flow Range | 1–30 L/min | 0.5–10 L/min |
Pulse Output Formula | F = 7.5 × Q (±3%) | F = 11 × Q + 2 (±3%) |
Pulses per Liter | ≈ 450 pulses/L | ≈ 662 pulses/L |
Output High Level | > DC4.7V (at DC5V input) | > DC4.7V (at DC5V input) |
Output Low Level | < DC0.5V (at DC5V input) | < DC0.5V (at DC5V input) |
Pulse Duty Cycle | Not specified | 50% ±10% |
3.Features
Wide Voltage Compatibility
Supports 3.5V–24V input (YF-S201), flexible for various circuit designs.
High Flow Accuracy
Stable pulse output enables precise flow rate measurement with ±3% accuracy.
Durable Nylon Construction
Resistant to pressure and high temperatures, suitable for long-term use.
Compact G1/2 Thread Design
Standard G1/2 threading ensures easy installation and broad compatibility.
Low Starting Flow
YF-S168 detects flow starting from 0.5 L/min, ideal for low-flow applications.
4.Applications
Water purification systems
Household water heaters
Self-service water vending machines
Smart campus shower card systems
5.FAQs
Q1: Can I install this sensor outdoors?
A1: No. Please install it indoors or in a dry, controlled environment. Prolonged exposure to humidity, high temperatures, or vibration may affect accuracy.
Q2: Can I replace my old flow sensor directly with this model?
A2: If you haven't used this specific structure model before, please test compatibility first or contact us for advice.
Q3: Do I need a filter with this sensor?
A3: Yes. A filter must be installed at the water inlet to prevent debris from damaging the sensor.
About Prime Living
Prime Living is a Canadian online store offering a carefully selected range of quality products for home, automotive, tools, outdoor living, electronics and more.
We are committed to fast order processing, secure packaging and reliable tracked shipping to provide an excellent shopping experience.
Shipping policy
We are always working hard to ensure your package arrives as soon as possible. Please understand that some factors like weather, high postal traffic, and the performance of shipping companies are outside of our control.
Returns
We offer a 14-Day Return Policy on items in which you are not completely satisfied with. You have the option of a full-refund or an exchange of the item.
Condition
Brand New
Shipping
This item is shipped directly from our supplier in China with tracking.