BRUEL & KJAER System V - Ca Libration Head Type; Notes to Specifications

9.3.5. Calibration Haad Type 4815
Ratad Force:
Dynamic:
Acc eleration Limit:
(bare table)
Current Limit:
Displacement Limit:
Velo
city Limit:
M oving
Element Dyn amic
Mas s:
Resonance Frequency Unloaded
Table:
Stray Magnetic Field:
M ounting
Surface :
Cross
Motion :
Flexure Stiffness:
He ad Constant:
Dime nsions:
Weight:
Accessories
Sup plied:
1 Type 8305 Accelerometer
1xDC0174
1 bottle OS 0003
1 x QA 0009
1 x QA 0043
1 xQA 0065
4xYO 0723
4xY00927
380 N (85Ibf) when mounted on the 4801 Body
267 N (60 Ibf) when mounted on the 4805 Body
1190 m/ s 2 when mounted on the 4801 Body
785 m/ s
2
when mounted on the 4805 Body
20 A RMS, with cooling
10 ARMS without cooling
12,7 mm, (0,5 in) continuous
14 mm, (0,55 in), between stops
1,0 m/ s, (40 in/ s)
0,34 kg , (0 , 75Ib)
12,5 kHz
See
curves, Figs.6.14, 6 . 15
Stainless steel Reference Accelerometer , 15,8 mm , (0,622 in) diame -
ter, tapped for 10- 32 mounting stud . Electrically isolated from Head
Less
than 3% of the axial motion to 2 kHz. See also Fig.7.13
5,2 N/ mm, (30 Ibflin)
69 mm/Vs (2,7 in / Vs)
235 mm (9,3 in) dia, 157 mm (6,2 in) high excluding Type 8305
6,7kg, (14,9Ib) excluding Type 8305
Mounting block
Thread locking cement, LOCTITE screw lock
Hexagonal wrench, 1/8"
Hexagonal wrench, 2 mm
Hexagonal wrench, 1,27 mm
Screw, 1,4 mm diameter, 0,3 pitch
Screw 2 ,5 mm diameter, 0,45 p itch
9.4 . N OTES TO SPECIFI CA TIONS
1. Specifications valid for 1) Mains voltages w ithin + 5%. 2) Altitude from sea level to
500 m (1600 f t). 3) Ambient Temperature not higher than 40 °C (104 ° F). 4) Zero
static force for table centring . 5) Standard base (T) only.
For ambient temperature TA above 40°C ( 104°F ). and /o r alti tudes exceeding 500 m
above sea
level, the rate d dynamic fo rce (a nd drive cur rent l imit) is reduced by multi-
plying by the following factor for the Exciter Head in us e:
62