CEMB TV22 User guide

Vibration equipment division
www.cemb.com
CEMB S.p.A.
Via Risorgimento, 9
23826 MANDELLO del LARIO (Lc) Italy
*Translation of the original instructions
SeiSmic velocity tranSducer
tv22
uSe and maintenance inStruction manual

Vibration equipment division
TV22 - ReV.07/2014
General Index
1. FunctIonInG 3
2. operatInG prIncIple 3
3. technIcal specIFIcatIons 4
4. assembly 4

TV22 - ReV.07/2014

Vibration equipment division
3
TV22 - ReV.07/2014
1. FunctIonInG
The model TV22 seismic transducer measure the absolute vibration of the machine by the securely mounted to a at surfa-
ce. It supplies an output signal directly proportional to the speed of vibration of the point to which it is fastened. Such signal
should subsequently be processed by one of the measuring channel of a serial “T” processing unit.
2. operatInG prIncIple
A voltage proportional to the speed of vibration, is induced in a coil suspended seismically to the transducer body and im-
mersed in a eld generated by a permanent magnet rigidly fastened to the transducer body.

4TV22 - ReV.07/2014
3. technIcal specIFIcatIons
Sensor type PZT piezoelectrical velocimeter
Measure type Seismic (absolute vibrations)
Dynamic range ±1270 mm/s-pk ± 50 in/sec-pk
Frequency response : ± 3 db 1,5÷12000 Hz 90÷720.000 CPM
Vibrations direction any
Sensitivity (± 10%) 3,94 mV/mm/s 100 mV/in/sec
Resonant frequency 25000 Hz 1.500.000 CPM
Max. shock protection 5000 g pk
Setting time > 4“ > 4 sec
Power supply 2÷10 mA - 18÷30 Vdc
Max. output impedance < 100 ohm
Electrical case isolation >10 (8) Ohm
Electromagnetic sensitivity Certied CE
Temperature range -50°C ÷ +121°C -58°F÷+250°F
Case material stainless steel 316L
Mounting hole standard = ¼”-28UNF-2B (or to be specify with the order)
Weigth 90 grm 3.2 oz
External protection IP65 EN60529/10.91 standards
Connection 2 pin MIL-C-5015 serial 3106/10, included connector
Maintenance none
Drawings enclosed 73920P= overall dimensions, layout and electrical connections
4. assembly
Prepare a smooth, at mounting surface and then drill and tap a mounting hole in the center of this area.
Wipe clean the mounting surface and spread on a light lm of grease, oil or similarcoupling uid prior to installation.
Avoid giving violent shocks to the body of the transducer; the tightening torque should be 2.7 ÷ 6.8 nm (2 to 5
lbs.)

Vibration equipment division
5
TV22 - ReV.07/2014
Refer to enclosed drawing nr. 73920P.

6TV22 - ReV.07/2014