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KEYENCE FT-55A Digital infrared temperature sensor (amplifier unit)

Name: KEYENCE FT-55A Digital infrared temperature sensor (amplifier unit)
Availability: InStock

✔ IN STOCK ✔ New Original

Delivery time: Shipped in 3 days after payment
Condition: Brand New & Original KEYENCE Factory Sealed
Warranty: 12 Months Standard Warranty
Quality Guarantee: 30-Day Return and Exchange Policy

Part Number	FT-55A
Product Type	Amplifier Unit
Product Origin	Japan
Shipping Port	Xiamen
Weight	85g

Brand :
Keyence

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Product Details

The FT-55A typically refers to a digital infrared temperature sensor (amplifier unit) from Keyence.

This is a high-performance, non-contact temperature measurement device designed specifically for industrial applications, widely used in casting, metal welding, glass forming, and electronic component heating process control.

100% Original & Authentic In-Stock & Fast Shipping Expert Technical Support 12-Month Warranty

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Core Features

✓ Non-contact temperature measurement: Utilizing advanced infrared technology, it accurately measures the surface temperature of objects, making it particularly suitable for high-temperature or inaccessible industrial environments.
✓ Adaptive emissivity: Equipped with adaptive emissivity functionality, users no longer need to manually set the emissivity of the object being measured. Simply input the current temperature, and the device automatically calculates and provides an accurate reading, greatly simplifying the operation process.
✓ Fast response and multiple memory banks: Extremely fast response speed (up to 15ms) and supports switching between up to 4 memory banks, each with individually set emissivity and limit values, adapting to rapid switching detection of various materials.
✓ Intuitive dual-color display: Equipped with a 7-segment LED dual-color display (red/green) with 4 digits and 2 digits, character heights of 8mm and 5.7mm respectively, and a display update cycle of 10 times/second, providing clear and intuitive readings.

Technical Specifications

Brand	KEYENCE
Model / Part Number	FT-55A
Type	Amplifier Unit
Supply voltage	12 to 24 VDC (maximum ripple 10%)
Power consumption	Approx. 1400-1600 mW in normal mode; approx. 1150-1350 mW in economy mode
Display resolution	0.1°C or 1°C (depending on the sensor head model)
Control output	2-channel NPN open collector (maximum 100 mA / 40 VDC)
Analog output	4 to 20 mA (maximum load resistance 260 Ω)
Response time	Selectable HSP (fastest 15ms), 30, 100, 200, 500, 1000, or 5000 ms
Operating temperature	-10 to +50°C
Operating humidity	35 to 85% (non-condensing)
Mounting method	Panel mount (with panel mount bracket)
Weight	85g

Frequently Asked Questions

Q: In what scenarios is this product primarily used?

A: The FT-55A is typically used in any industrial production process involving high temperatures, moving objects, small targets, or where temperature detection needs to avoid contact with contaminants.

Q: What sensor head models are available?

A: The FT-55A amplifier can be paired with a variety of infrared sensor heads of different specifications to meet diverse measurement needs, from small targets to ultra-long distances and ultra-high temperatures. The main available sensor head models include: FT-H10, FT-H20, FT-H30, FT-H50, FT-H40K, and FT-H50K.

The display resolution of the FT-55A will vary depending on the sensor head selected. When used with H10, H20, and H30, the resolution can reach 0.1°C; while when used with H50, H40K, and H50K, the resolution is 1°C. You can choose the most suitable sensor head model based on the actual size of the target being measured, the distance, and the temperature range.

Q: How do I wire its 4-20mA analog output?

A: The FT-55A's 4-20mA analog output uses a standard two-wire loop power supply. When wiring, the sensor, external DC power supply, and receiving device (such as a PLC, temperature controller, or ammeter) need to be connected in series in the same closed loop.

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Xiamen Weiranxin Trading Co., Ltd. has been engaged in the field of industrial automation components since 2016. We mainly supply automation components to heavy industry manufacturers around the world.

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