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GF SIGNET LEVEL
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GF SIGNET LEVEL INSTRUMENTS
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2260 Ultrasonic Level Transmitters
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¢º PRODUCT OVERVIEW
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The type 2260 is a rugged, high performance ultrasonic level measurement transmitter, having transducer and processing electronics and a display/ programming unit incorporated in one single housing.
All type 2260 Level Transmitters are using established high end pulse echo transducers, which provide narrow beam angles and reliable measurement ranges up to a distance of 15 meters (49.2 ft).
For small, stand alone tanks the transmitter provides a simple 2-wire 4 to 20 mA output, with additional power relay contacts. It can be programmed using push buttons and the large, graphic display. For large and/or multiple tank applications versions with HART interface are recommended, communicating directly with a panel mount controller or PLC. The HART protocol can easily be used for programming these versions.
For hazardous areas the type 2260 Level Transmitters are available with explosion proof approvals.
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¢ºFeatures
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• 2-wire compact transmitters
• Non-contact level metering
• Narrow 5° beam angle
• Level, volume and open channel flow
• Fully temperature compensated electronics
• PP or PVDF sensor body provides best chemical resistance
• Quick-set menu for efficient installation
• Plug-in keypad and display
• 4 to 20 mA / HART interface (Optional)
• Secondary lightning protection
• Intrinsically safe (Optional)
• 32-point linearization
2270 Ultrasonic Level Sensor
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¢º PRODUCT OVERVIEW
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The type 2270 is a rugged, high performance ultrasonic level measurement sensor, having transducer and processing electronics incorporated in one single housing. It provides all the sophisticated echo detection features of the well accepted 2260 Ultrasonic Level Transmitters.
For single and multiple tank applications 2-wire sensors are recommended using either HART protocol or 4 to 20 mA for the direct communication with a panel mount controller or a PLC.
Either for liquid level measurement in sumps or tanks, for tank contents measurement, or open channel flow measurement, the 2270 Level Sensors provide the answer. Sensing ranges up to 6 m (19.7 ft) are available. PP and PVDF sensor bodies provide best chemical resistance in applications where concentrated chemical shall be detected.
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¢ºFeatures
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• 2 wire compact sensor
• Compatible with 9900 transmitter (optional signal converter)
• Non-contact level measuring
• Narrow 5° beam angle
• Level, volume and open channel flow
• Compact housing
• 32 points of linearization
• Fully temperature compensated electronics
• Outstanding signal processing software providing highly accurate measuring results
• PP or PVDF sensor body provides best chemical resistance
• Secondary lightning protection
• 4 to 20 mA / HART interface
2280 Tuning Forks
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¢º PRODUCT OVERVIEW
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Type 2280 Tuning Forks are suitable for level detection of liquids or granular, powdered solids. Mounted on tanks filling/emptying can be controlled using these devices just as well they can generate fail-safe alarms providing overfill or dry run protection.
The operation principle is based on the electronic circuit exciting the fork probe making it vibrate. As the medium reaches and covers the fork its vibration changes. The electronics senses the change of vibration and gives output signal after a selected delay.
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¢ºFeatures
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• Maintenance free vibrating principle
• Independent of the liquid conductivity, dielectric constant, viscosity, pressure and temperature
• Relay or electronic output
• Selectable sensitivity
• Temperatures up to 130 degrees
• ATEX and WHG approvals
• IP67, 65/68 protection
2291 Guided Wave Radar Level Transmitter
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¢º PRODUCT OVERVIEW
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The 2291 Guided Wave Radar level transmitter is designed for continuous level measuring of conductive or non-conductive liquids, pulps and solids. The 2291 level gauge operates based on the well-known TDR (Time Domain Reflectometry) principle. Micropulses are sent along a probe guide at the speed of light. As soon as the impulse reaches the surface of the medium, it is reflected back to the electronic module. Level distance is directly proportional to the flight time of the impulse.
The reflected signal is dependent on the dielectric constant of the material; the feasibility of the measurement is ¥år ¡Ã 1.9. The TDR technology is unaffected by the properties of the medium as well as that of the space above it. Measurement is also unaffected by the change in the physical properties of the materials such as temperature, pressure, dielectric constant.
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¢ºFeatures
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• Measuring range up to 6 m (19.6 ft)
• Accuracy: ± 5 mm (0.2 in.)
• PP / PFA coated probes available on request
• Rod & cable versions available
• Minimum ¥år 1.9
• 2-wire version
• Graphic LCD display
• 4 to 20 mA + HART output
• Medium temperature range: -30 °C to +90°C (-22 °F to +194 °F)
• Maximum process pressure: 40 bar (580 psi)
• IP67 protection
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2284 Ultrasonic Gap Switch
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¢º PRODUCT OVERVIEW
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The Ultrasonic Gap Switch consists of Polyphenylene Sulphide (PPS) and is high corrosion resistant in most liquids. The gap switch is designed for high or low level alarm in different tank applications as well as pump control. However, if there is a liquid present, the signal will be transmitted across the gap and the integral electronics will switch the output circuitry to signal the presence of a liquid.
It can be mounted in any position in a tank using a ¾ in. or 1 in. thread available in BSP and NPT thread forms.
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¢º Features
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• Relay output
• Corrosion resistant PPS body
• SPDT 6 Relay Expansion
• Small in-tank dimensions
• RS232 / RS485 / MODBUS support
• Compact sensor for narrow spaces
• Self contained full plastic body
• No moving parts
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2250 Hydrostatic Level Sensor
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¢º PRODUCT OVERVIEW
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The Signet 2250 Hydrostatic Level Sensor for level and depth control has a one-piece injection molded PVDF body and ceramic diaphragm for superior compatibility in corrosive liquids. Utilizing hydrostatic pressure, the 2250 disregards false level signals from steam vapors, foam or any other debris on the liquid surface. Two pressure ranges allow for optimal resolution matched to your sensing needs. Solid state circuitry eliminates drift (no internal potentiometers)..
These sensors are available with a proprietary digital (S3L) output, or 4 to 20 mA output. The extended cable and capillary tubing with the union connection and a customer supplied conduit, allow submersion in process vessels.
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¢ºFeatures
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• Level and depth measurement
• 4 to 20 mA or digital (S3L) output
• Flush ceramic diaphragm
• Easy submersible installation
• Choice of two pressure ranges
• Standard union connection and extended cable and capillary tubing (10 m)
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