Metri tape type liquid level sensor (marine)
CBSI Corporation
About This Product
■Operating principle of metric tape type liquid level sensor
The basic structure of this sensor is a base strip made of SUS material (width 20 mm x thickness 1.0 mm).A thin nichrome resistance wire wound at a pitch of 5 mm is attached to a 2 mm wide gold-plated band at the front center of the base strip. It takes advantage of the fact that the resistance value changes when pressed by external pressure.
An insulating film covers both sides (acting as a spacer) and the rear of the front of the base strip, and the resistance wire is wound with an exact 5mm pitch, and the outside is further covered with fluorocarbon film (fluorocarbon film) or Hastelloy foil. Protected.
When the liquid in the tank pushes this film, the resistance wire comes into contact with the gold-plated contact point in the center of the base plate, changing the resistance value. When the pressure is removed (the liquid level drops and leaves the tape), the resistance wire returns and separates from the gold-plated strip contact. The lower end of the nichrome resistance wire is welded to the bottom of the base plate.
The entire sensor tape is protected by a protective channel. Additionally, this sensor can be used in tanks up to 33m long, and can be installed by hanging it from the top of the tank into the protective tube. The independent high alarm (IHA) can be installed within the same protection tube, simplifying the installation structure on the hull. The resistance value is 1,000Ω per meter of liquid surface, but the exact measurement value is written on the tag for each sensor.
The air inside the insulating film that separates the liquid in the tank from the gauge moves as the liquid level moves up and down. In order to balance this moving air pressure, an air buffer is provided inside the sensor header, which then goes through a filter to maintain a balance with the tank pressure. Although the MetriTape sensor is basically a maintenance-free system, we recommend replacing this filter approximately every four years.
Also. In case of an emergency, inspection or replacement of the sensor tape can be easily done from the housing on the deck, so there is no need to go inside the tank. Temperature sensors can also be attached to the sensor tape, allowing temperature measurement at up to 3 points.
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Product
Metri tape type liquid level sensor (marine)
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Handling Company
CBSI Corporation
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Categories
1 Models of Metri tape type liquid level sensor (marine)
| Product Image | Part Number | Price (excluding tax) | Approval | Covered goods | Effect of specific gravity | Filter lifespan | Frequency response | Movable winding | Pressure balance | Sensor filter | Sensor length | Shipping save | Starting depth (AD) | Temperature detection | Temperature range | Trend of resistance value | Weight | Winding resolution | Winding temperature coefficient |
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Metri tape type liquid level sensor (marine) |
Available upon quote | Ensuring intrinsic safety using Zener barrier, FM:Class I,Division 1 Group C,D | Hastelloy C276, polypropylene, 303 stainless steel (LA-HN is nylon 12) | A 1% increase typically results in a 1mm level change (can be calibrated) | 48 months depending on application | 0-0.1Hz (every 1m amplitude) | 230mm, starting from sensor zero to sensor bottom 70mm. | Direct balance, ±1 atm | Polypropylene and viton | 1-36m | It is wrapped in a cardboard reel and placed in a box. (107 x 107 x 8 cm), the weight of the packing is Sensor Plus 3.63 kg. | 125mm water head, offset during calibration | Up to 3 points, 2-wire platinum type (TP), 0.6m from the bottom, 3m from the top, and the midpoint of the sensor | -15-107℃ | 1,000Ω/m, ±1% | 2.5kg, plus 0.24kg/m | 5mm | 40ppm/℃ |
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About Company Handling This Product
- Japan