FD-A300AN Series

Description

Unlike ordinary HMDs that detect radiation from heated material and output the presence of the material as a signal such as a relay contact, FD-A300AN Series sensors convert the radiation intensity from heated material into analog voltage. The large analog dynamic range allows analog output of a wide range between low temperature of 350 °C and high temperature of 750 °C. (The signal is not linearized with reference to temperature and the sensors cannot be used as thermometer.)

• Supports a wide range of temperature 350-750 °C (with fiber optic cable FG2) Attaching a pinhole plate to the optical head allows analog output ranging from 400 to 850 °C (OHA with φ10 pinhole) or from 460 to 1,100 °C (OHA with φ5 pinhole).
• Direct reading of analog voltage Output analog quantity is fed into the control unit, which displays the analog voltage. Setting a comparator at an arbitrary analog quantity provides output of relay contact or open collector output. Comparator setting corresponds to sensitivity adjustment of the conventional HMDs. With the FDA300AN Series, viewing concrete figure of analog voltage facilitates setting.
• Dual comparators for a variety of applications The conventional HMDs had weaknesses such as low accuracy of detection position as in situations where high sensitivity to detect low-temperature material caused unwanted reflection with high-temperature material. The dual comparators for the FD-A300AN allow setting of one of the two for low temperature and the other for high temperature. On top of this, selection of output in agreement with the line conditions can increase the detection position accuracy.
• Use of insulating transformer (isolator) for longdistance transmission The output from the amplifier is voltage output of 0-10 V and use of a commercially-available insulating transformer allows long-distance transmission as a measurement signal of 4-20 mA.

Example - Optical Head combination

 Please contact Takex for other Optical Head and Fiber Cable combinations.

Optical Head Field of View explained

  The Field of View (FOV) can be a critical parameter in the selection process to maintain reliable object detection. If the object to be detected fills or overfills the FOV, there is no issue with repeatable detection or Minimum Resolveable Temperature (MRT).

When calculating your best fit; please note the correlation to distance, as relates to the FOV within the cone sensed by the system.

Type		Model	Field of View (FOV)
Standard View		OHA
Standard View		OHW1
Standard View		OHW2

Features

• FD-A300AN is a series of optical fiber-type hot metal detection photo sensor (HMD) that directly detect infrared energy emitted from heated material (steel products, etc.).
• Equipped with a controller that employs an 8-bit microcomputer, this intelligent hot metal detection sensor integrates various functions.