ST-50 SERIES
ULTRASONIC TRANSDUCER
Instruction Manual
PL-418
December 1994
33454180Rev 1.2
Page 1: ...ST 50 SERIES ULTRASONIC TRANSDUCER Instruction Manual PL 418 December 1994 33454180 Rev 1 2 ...
Page 2: ...is continually being refined to provide our customers with first rate sales information engineering assistance and after sales support For more details on our products and service please contact us and we will provide you with a listing of the offices or representatives nearest you P O Box 4225 730 The Kingsway Peterborough ON Canada K9J 7B1 709 Stadium Drive Arlington Texas U S A 76011 Oak House ...
Page 3: ...imize the transfer of power from the transducer into air and from the air back into the transducer SPECIFICATIONS Model ST 50 Measurement range typically 0 3 m 15 m 1 50 ft restricted to transceiver maximum Temperature range 40 to 93 C 40 to 200 F Frequency typically 44 KHz transceiver dependent Beam angle 5 Weight 3 9 Kg 8 5 lb Construction CPVC housing with polyurethane face 1 NPT mounting condu...
Page 4: ...not run cable near high voltage or current runs contactors and SCR control drives For BASEEFA Zone 0 cable must be terminated externally to Zone 0 in an appropriate manner The cable must be protected against mechanical damage and arrangements sealed to prevent migration of atmosphere from zone 0 To reduce risk of elecrostatic discharge housing except free must be covered with copper mesh and groun...
Page 5: ...smission is perpendicular to the liquid surface Avoid aiming into vortexes On solids applications the Milltronics Easy Aimer should be used to facilitate aiming of the transducer Refer to the Easy Aimer instruction manual Where the transducer is mounted to a standpipe the inner standpipe surface and end must be smooth and free of burrs ridges and seams Consider the optional temperature sensor when...
Page 6: ...tronics Easy Aimer Kit be used Refer to the Easy Aimer instruction manual Customer flanged standpipe If metal flange must be welded to pipe refer to Liquid Applications Standpipes Flange gasket and hardware supplied by customer Refer to Liquid Applications Standpipes 1 NPT coupling nut Flanged Blind Flange 1 NPT nipple welded to blind flange factory assembled flanged transducer FLAT FACE FLANGE ON...
Page 7: ...rge as possible As a rule of thumb the 3 dB cone of the sound beam should not intersect the standpipe wall in applications opening into a vessel or larger area Otherwise additional blanking will be required to compensate for the interference zone created by the opening no additional blanking transducer sound beam intersects vessel near blanking extension of 150 mm 6 past end of standpipe may be re...
Page 8: ... beam must be perpendicular to liquid surface If standpipe is used refer to Liquid Applications Standpipes 3 Echo has missed improperly leveled transducer 4 When performing an empty or full calibration the tank must contain its normal vapour and be at its normal temperature tank manufacturer s empty level rise Empty level for alternate location Belowthis level echo would reflect away from thetrans...
Page 9: ...bin wall seams filling profile emptying profile 3 Transducer too close to material inlet Falling material will intersect sound beam and cause erroneous readings or loss of echo 1 Transducer angled to avoid seams in bin wall and aimed at discharge in order to read bin when empty 2 Avoid intersecting bin wall seams structural members and wall irregularities Otherwise refer to transceiver manual Easy...
Page 10: ...tors are in use use the Agitator Discrimination parameter on transceivers where available 3 Transducer should be aimed away from wall projections DRYER WOOD CHIPS 1 Transducer should be mounted perpendicular to slope of wood chips agitator typical high level typical low level drag conveyor infeed infeed PL 418 8 ...
