Pulsar - Model dB Series -Non-Contacting Ultrasonic Transducer

All the dB Ultrasonic Transducers from Pulsar Measurement feature unique DATEM Technology, found only in Pulsar Measurement level sensors. Digital Adaptive Tracking of Echo Movement (DATEM) is an echo discrimination system that works on the basis that it identifies the true moving echo from the background noise, then follows it, ignoring all the competing echoes as it does. This allows level sensors from Pulsar Measurement to work in cluttered sewage wet wells, a noisy stone silo, an agitated tank, or even through a safety grid. DATEM also looks for echoes within a very small frequency range, which helps to make it especially good at ignoring both acoustic and electrical noise.

The high power of the dB Ultrasonic Transducer range makes sure that all the echoes from an application can be easily monitored. The result is a highly reliable level measurement in applications that previously could not be considered. Thanks to DATEM Technology, the effective beam angle of our dB and dBi ultrasonic sensors is typically as small as 3 degrees.

The non-contacting design of the dB ultrasonic level sensors means they can be fitted with zero interruption to service, and there’s no time-consuming maintenance needed, providing highly accurate non-contacting level measurement. The ultrasonic level sensor range from Pulsar Measurement is available with multiple options, including submergence shields, PVDF and intrinsically safe versions for sensors mounted in hazardous locations, and many more!

Independently MCERTS Certified

Ultra 4 and dB6 Ultrasonic Transducer with Double Sun-Shields (CSA MC250378/00)

Class 1 accuracy with the combined performance characteristics as follows:

0.07 % (Class 1)

Certification Range:

0 - 6 metres

Ultra 4 and dB3 Ultrasonic Transducer with Double Sun-Shields (CSA MC140269/09)

Class 1 accuracy with the combined performance characteristics as follows:

0.107% (Class 1)

Certification ranges:

0 to 3m (nominal)

Submergence shields are useful to keep the face of the transducer clean in applications where the sensor is likely to get submerged. In case of submergence, the controller can be asked to fail high, low, or hold the last reading. When the level drops back below the shield, it allows the controller to resume operation with a clean transducer face.

All dB transducers are retrofittable with the entire Pulsar Measurement controller range, so when the needs of your measurement change, your system won`t have to.

Spec: Description:

• Sensor body material: Valox 357 U and syntactic foam face
• Maximum separation: 500 m (1,640.4 ft)
• Mounting connection: BSP or 1 in NPT
• Enclosure protection: IP68/NEMA 6P
• Operating Temperature:
• Standard: -40 °C to +90 °C (-40 °F to +194 °F)
• Hazardous Area: -40 °C to +75 °C (-40 °F to +167 °F)
• CE Approval: 2014/30/EU - EMC & 2014/34/EU ATEX Directives. Standards applied: EN 60079-0:2012+A11:2013/ EN 60079-11:2012 / EN 60079-18:2009 / EN 60079-26:2007 / EN 61326-1:2013
• ATEX Approval: Standard ATEX EEx m II T6 or optional EEx ia IIC T6. FM/FMc approval. (dB50 not approved)
• Accuracy: 0.25% or 6 mm (0.2 in) whichever is greater
• Resolution: 0.01% or 2 mm (0.1 in) whichever is greater

Option: Description:

• PVDF: Suitable for many applications where chemicals are present
• Front threaded/PVDF: Front threaded versions allow for easy mounting with 1.5 in or 2 in BSP/NPT nose thread
• Submergence shield: Keeps the transducer face clean and dry in applications at risk of submergence
• Flanged DIN/ANSI: Available in DIN or ANSI flange specification - all featuring PTFE coating on the process wetted side. Various flange sizes available
• Foam Face: Provides more acoustic power output in dry or dusty applications
• Sanitary flange: Includes a full face PVDF seal for use in hygienic applications
• PTFE: PTFE Coated on the wetted side
• I.S. options: All options available in I.S. option
• Multiple Cable Lengths Available: 5 m, 10 m, 20 m, 30 m (16.4 ft, 32.8 ft, 65.6 ft, 98.4 ft)
• Accessories: Additional aiming kit
• Brackets: A range of different stainless steel brackets are available to ensure the transducer is mounted in the best possible position for accurate results