Sensor for Iron & Steel Industry

Hot metal with 360 to 1,200 degrees C

  • Overview
  • Specifications
  • External dimension
  • I/O circuit
  • Characteristics Data
  • Downloads


-> Setting of sensitivity adjustment against temperature of detecting material had not been obvious. However this equipment displays reception level lamps in every twice using linear characteristic relationship between temperature and analog output voltage(8 levels). Operation setting can be made with level display or analog voltage. Also, there are three ranges, L/M/H as detection temperature changeover switch. Any parts such as slits etc. aren't required for 350 to 1,200 degrees C. It is epoch-making HMD that operation point setting is possible with detecting condition before operation.
-> This device doesn't specify power source. It is capable of being used within the scope of 100 to 240VAC.
-> Water-cooling or air-purge isn't required for sensor head because non-air dust purge hood is applied.
-> Warning output is provided.
-> We have wide variety of sensor head. Refer to data sheets of head.




Model No. Amplifier: PRV-10A*1
Sensor head: FHM-201(Basic type),
FHM-203(Narrow directivity type),
FHM-201-8WA (Wide directivity type)
Fiber unit *2: FHV-321(2m), FHV-351(5m), FHV-411(10m)
Detectable objects Heated material with 360 to 1,200 degrees C
Detecting distance 5m(Different depending on the size or temperature of detectable objects against detection range, or fiber length*3)
Power source 100 to 240VAC(+10%, -15%, 50/60Hz)
Control output 1C relay contact(250VAC 3A, COSφ=1),
Warning output Photo-coupler(Max. 120V, 100mA)
Ambient temperature Amplifier:-10 degrees C to +55 degrees C
Sensor head/Fiber unit:-10 degrees C to +200 degrees C
Ambient humidity 45 to 85%RH(Not icing)
*1 PRV-10B with communication function and PRV-10C with detection temperature outside changeover function are also available.
*2 3m, 15m and 20m type are also available.
*3 Ask us in details.

External dimension

External dimension

External dimension

I/O Circuit


Control output(Changeover by inner switch)

Operating mode Light-ON Dark-ON
Pin No. of connector. 5月20日 9-10 10-11 5-6 9-10 10-11
Power-ON state When light-entering ON CLOSE OPEN OFF OPEN CLOSE
When light-interrupting OFF OPEN CLOSE ON CLOSE OPEN

Warning output

Pin No. of connector. 7-8 12-13 13-14
Power-ON state When normal ON CLOSE OPEN
When troubled OFF OPEN CLOSE

Characteristics Data

Steel temperature characteristics

Min. detectable objects and detectable temperature characteristics



This menu is for members only.  Please proceed with the Member Registration link here if you are not currently a member.
If you have a current membership, please read the following Terms of Use and press "Agree" to acknowledge.

License for Downloading Materials

When downloading the product specifications, drawings and various types of materials and software related to the Hokuyo's product line, please read the terms of use in advance and then utilize the same with your understanding and consent.
In case of dissent, please understand that you cannot register to and be recognized in the download page. (And the Terms of Use may be revised without prior notice.)

Terms of Use

Intellectual Property Rights

  1. Copyrights and the other rights to contents such as sentences, data and software published on this Website
    (hereinafter referred to as "Contents") are held by Hokuyo or its suppliers.
  2. The secondary application (copy, diversion, defacement, analysis, transmission, assignment, rental, licensing, and usage for the purpose of business activities or commercial gain) of the Contents on this Website posted by Hokuyo is strictly prohibited without our prior approval. Specific terms of use described for each download site or Contents shall apply in preference to the Terms of Use.
  3. Provision of the Contents on this Website by Hokuyo means neither a transfer of the patent rights, design rights, and/or the other intellectual property rights to inventions and designs in the Contents, nor a grant of any rights based on the intellectual property rights.


Hokuyo pays full attention to the information that appears on this Website, but does not take responsibility for the following items:

  1. The information that appears on this Website is always the latest version, and is updated or corrected timely and properly;
  2. The information that appears on this Website is accurate, useful and safe;
  3. Customer's damage incurred by the use of this Website, including changes or deletions of the information, discontinuation or suspension of the publication; and
  4. Any and all damage incurred by using this Website.


Q & A


Copyright © 2014 HOKUYO AUTOMATIC CO., LTD. All Rights Reserved.