Cryogenic Charge Accelerometer Model 7722 | 7724

Dynamic characteristcs

Charge sensitivity Typical:

3.7 pC/g

Charge sensitivity Minimum:

3.0 pC/g

Frequency response

Resonance frequency, typical:

20 kHz

Amplitude response (±5 %):

1 to 4000 Hz

Amplitude response (±1 dB):

1 to 6000 Hz

Transverse sensitivity:

≤3 %

Amplitude nonlinearity:

1/500 g

Electrical characteristics

Output polarity:

Acceleration directed into base of unit produces positive output

Resistance:

≥ 10 gΩ

Capacitance:

120 pF

Grounding Model 7722:

Signal return connected to case

Grounding Model 7724:

Signal return isolated from case

Environmental characteristics

Temperature range:

-269°C to +177°C

Sinusoidal vibration limit:

500 g pk

Shock limit:

2500 g pk

Base strain sensitivity:

0.0008 equiv. G pk/μ strain

Physical characteristics

Weight:

29 gm

Case material:

Stainless steel

Connector:

10-32 UNF-2A thread mates with Endevco Model 3090C cable or equivalent