POF CABLE
Thermopile Sensor PMMA Plastic Optical Fiber for Sensing
This is a sensor-grade PMMA plastic optical fiber for passive, EMI-immune optical sensing. Flexible light guide for presence, position and probe assemblies.
Specifications
- Output Type
- Digital Sensor
- Theory
- Resistance Sensor
- Sensitive area
- 0.85 X 0.85mm
- Noise voltage
- 60±2 nV/Hz1/2
- Responsivity
- 125V/W
- Time constant
- 15ms
- Operating Temp.
- -30 to 100°C
- TCR
- 0.06%/°C
- NEP
- 0.44nW/Hz1/2
- Thermopile resista
- 350±20% kΩ
- Certification
- ISO9001 ,ROHS
Thermopile Sensor PMMA Plastic Optical Fiber for Sensing
This sensing fiber from JINSHANG TECH is a flexible polymer light guide used to build presence, position, level and through-beam optical sensors.
JINSHANG TECH supplies the unit as a production item; fiber diameter, jacketing, connectorization and length can be confirmed against the specification before ordering.
Key Characteristics
- Supply voltage: 60±2 nV/Hz1/2
- Certified to ISO9001 ,ROHS
- Tight bend radius routes light into compact mechanisms and small enclosures
- Immune to EMI and safe around high-voltage and high-noise machinery
- Passive sensing tip — no electronics or voltage required at the measurement point
- Chemically inert polymer tip suitable for damp or corrosive environments
- Withstands vibration and repeated movement on moving carriages and robots
- High NA for efficient coupling to low-cost LED/phototransistor sensor heads
Typical Applications
The unit is commonly used for through-beam and reflective presence/position sensors in machines, and high-voltage and industrial environments that need galvanic isolation. The result is a reliable, repeatable build that tolerates the routing, vibration and repeated handling typical of production installations.
Frequently Asked Questions
Q: What affects sensing range? A: Fiber diameter, bend radius, head geometry and the amplifier's optical power set the detection distance; larger cores generally collect more light.
Q: Is it affected by motor noise? A: No. Because the signal is light, EMI and RFI from motors, contactors and inverters do not couple into the fiber.
Q: How is POF used in a sensor? A: Light is launched through the fiber to a sensing head; the returned or interrupted light is measured by a remote amplifier, keeping electronics away from the target.
Q: Can the sensing end be placed near high voltage? A: The fiber is non-conductive, so the sensing tip carries no electrical potential and is safe in high-voltage areas when the amplifier is mounted remotely.
See the BH Cables assembly range for rugged installations at www.bhcables.com.
