Pulsar Measurement

DUET Dual Ultrasonic Echo Transducer

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The DUET is a unique product to Pulsar Measurement and features a patented approach when it comes to addressing the issue of accuracy for flow measurement. Both transducers fire together, by continuously monitoring the phase difference of the echoes, and because the distance between the transducer faces is known and constant, the speed of sound is continuously updated in real-time for the process. As a result, the accuracy and stability of measurement readings are exceptional. The DUET Transducer System must be combined with the FlowCERT controller and benefits from MCERT Certification. This means that Pulsar Measurement meets the framework of standards set out by the Environment Agency to ensure that everyone involved in the monitoring of liquid flow is working towards the same standards and providing accurate flow data.

• Unique patented non-contacting transducer
• Insensitive to air temperature variations
• 300 mm (11.8 in) Deadband
• Most accurate open channel flow system in the world!

General Specifications
DimensionsNominal 205 mm (W) x 640 mm (H) (8.07 in (W) x 25.19 in (H))
MaterialsTransducers: Valox 357 U and syntactic foam face
Bracket: 304 stainless steel
Cable LengthStandard: 5 m, 10 m, 20 m, or 30 m (16.4 ft, 32.8 ft, 65.6 ft, or 98.4 ft).
Optional: up to 150 m (492 ft) maximum; increments of 10 m (32.8 ft) only
Maximum Separation 500 m (1640 ft)
Mounting ConnectionBSP or 1 in NPT
Enclosure ProtectionIP68 / NEMA 6P
Operating Temperature (Electronics)-40 °C to +90 °C (-40 °F to +194 °F)
Measurement Range0.3 m - 2 m (0.98 ft - 6.56 ft) from the face of the lower transducer; 1.5 m (5 ft) max. for MCERTS certification
Frequency125 kHz
Beam Angle<10°
Controller CompatibilityFlowCERT only