ST-100 SERIES
ULTRASONIC TRANSDUCER
Instruction Manual
PL-419
December 1994
33454190PRR - 1.1
Page 1: ...ST 100 SERIES ULTRASONIC TRANSDUCER Instruction Manual PL 419 December 1994 33454190 PRR 1 1 ...
Page 2: ...ce level measurement in line weighing of dry bulk solids and motion sensing Milltronics is established world wide through associate offices and representatives Our network 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...
Page 3: ...hing techniques are used to optimize the transfer of power from the transducer into air and from the air back into the transducer SPECIFICATIONS Model ST 100 Measurement range typically 30 m 100 ft restricted to transceiver maximum Temperature range 40 to 93 C 40 to 200 F Frequency typically 44 KHz transceiver dependent Beam angle 7 Weight 15 9 Kg 35 lb Construction aluminum housing with polyureth...
Page 4: ... 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 electrostatic discharge housing except face must be covered with copper mesh and grounded 95...
Page 5: ... tightening of the mounting hardware is sufficient On liquid applications the transducer must be mounted so that the axis of transmission is perpendicular to the liquid surface Avoid aiming into vortexes 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 mounting the tran...
Page 6: ...etail bolt washer rubber washers or grommet mounting plate or blind flange washer nut Blind Flange Flanged conduit connection blind flange spacer gasket nut and bolt assembly standpipe Flange gasket and hardware supplied by customer Refer to Liquid Applications Standpipes Customer flanged standpipe If a metal flange must be welded to pipe refer to Liquid Applications Standpipes PL 419 4 ...
Page 7: ...sible 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 required flanged transducer no intersection vessel no vessel no additional blanking required standpipe sound beam int...
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 discharge run empty level for alternate location Below this level echo would reflect away from...
Page 9: ...seams structural members and wall irregularities Otherwise refer to transceiver manual 3 Transducer too close to material inlet Falling material will intersect sound beam and cause erroneous readings or loss of echo minimal angle of repose transducer discharge 4 On fluid like solids aim transducer perpendicular to material surface 5 On dual discharge bins aim each transducer at the discharge point...
Page 10: ...ITH AGITATOR 1 Transducer should be kept away from infeed 2 Where agitators are in use use the Agitator Discrimination parameter on transceivers where available 3 Transducer should be aimed away from wall projections infeed agitator PL 419 8 ...
