BRUEL & KJAER 4294, User Manual

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Calibration Exciter Types 4294 and 4294-002 – User Manual 4
2.3 Mounting a Transducer
Types 4294 and 4294-002 are designed for use with Brüel & Kjær Accelerometers with
maximum weights of 70 and 200 grams, respectively. The accelerometers can be mounted with
“finger-tight” mounting torque (~0.3 Nm, max. 0.5 Nm) directly onto the vibration table using
a 10–32 UNF steel stud YQ-2962, or mounted with the aid of Mounting Disc DB-2996 for
transducers weighing less than 10 grams. Different mounting options are illustrated in Fig.2.2.
Caution:
If the specified torque is exceeded, be sure to apply a similar counter-torque to the armature in
order to protect the vibration table from damage
The mounting disc lets you attach accelerometers in several ways. Small transducers fitted with
3 mm threads can be attached using 3 mm Steel Stud YQ-2007. Alternatively, a Mounting
Magnet UA-0642 or Beeswax YJ-0216 can be used to attach transducers to the mounting disc.
Fig.2.2 Transducer mounting options
4294 or 4294-002
Calibration Exciter
Accelerometer
with Integral
10-32 UNF Stud
10-32 UNF
Threaded
Accelerometer
10-32 UNF
Threaded
Accelerometer
M3 Threaded
Accelerometer
Accelerometer
with Integral
M3 Stud
Accelerometer
without
Base Thread
¼-28 UNF
Threaded
Accelerometer
10-32 UNF
Mounting Thread
YQ-2962
10-32 UNF Stud
UA-0642
Mounting
Magnet
YQ-2007
M3 Stud
YJ-0216
Beeswax
UA-2062
¼-28 UNF to
10-32 UNF Stud
DB-2996 Mounting Disc
(3 mm tapping, 10-32 UNF thread)
+
Z
+
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