Made in Japan

Manufacturer: Tokyo Keiso

Model: FM4000

The FM4000 series metal tube level gauges are improved versions of the FM-1000 series level gauges that Tokyo Keiso has been manufacturing for many years.
Liquid level is indicated by rotating flappers in an indicator by the action of a magnet integrated in a float. Alarm switches and/or analog output (4 to 20 mA DC) transmitters can be additionally provided for on-site checking and remote monitoring and control purposes. Specifications for PVC or fluorocarbon resin linings are the same as those for the FM-1000 series.

Features

• Metal tube (FM4100 to FM4800)

  All pressure-resistant parts and wetted parts are made of metal and hence free from breakage or liquid leakage.

• Clear level indication

  Fluorescent color flappers enable easy observation of liquid levels even from a distance. Indicators are free from blurs and smudges that are common with glass gauges.

• Three functions by a single gauge (on-site indication, alarm, and level transmission)

  In addition to on-site indication, an alarm switch and an analog output (4 to 20 mA DC) transmitter can be additionally provided for minimizing the total cost of level control.

• Operable under harsh conditions

  Pressure: Max. 40 MPa
  Liquid temperature: −196 to +400℃
  Measurable liquid density: Min. 0.39 g/cm³
  Interface measurement: Density difference 0.2 g/cm³ and density sum 1.2 g/cm³ or higher
  (These gauges cannot withstand the combination of maximum values.)

• Manufactured to meet customers’ specifications

  Gauges can be manufactured to meet customers’ specifications such as connection size, measurement range, density, and vent and drain designs. Contact us for details.

• Certification for high-pressure gases

  Gauges certified for high-pressure gases are available on request (up to 9.9MPa).
  Contact us for details. (The actual structure may differ from the drawing.)

• High-performance analog output (4 to 20 mA DC) transmitter using magneto strictive effect

  High-precision analog output (4 to 20 mA DC) transmitter using the magneto strictive effect can be additionally provided. Conforms to IECEx, ATEX explosion-proof, and HART7.

• Explosion-proof alarm switch

  Conforms to IECEx and ATEX explosion-proof.

Specifications