Polytec OFV-3001, User Manual

Page: 63 / 101

7-3
7 Technical Specifications
Calibration Accuracy
Amplitude Linearity
Amplitude Frequency Response (Flatness)
Velocity
decoder
Measurement
range
Amplitude error
@ T = (25
±
5) °C
(T = (77
±
9)°F)
in the temperature range
5°C ... 40°C (41°F... 104°F)
% of rms reading % of rms reading
OVD-01 1 ... 1,000
±
1.0
±
1.2
OVD-02 5
±
1.0
±
1.5
25
±
1.0
±
2.0
125 and 1,000
±
1.0
±
2.5
Conditions: sinusoidal vibration, f = 1 kHz, amplitude 70 % of full
scale range, load resistance
≥
1 M
Ω
Velocity decoder
Maximum linearity error
1
1
Linearity error is defined as the amplitude-dependent, relative deviation of the scale factor
referred to the scale factor under calibration conditions.
One particular range Overall
% of rms reading % of rms reading
OVD-01
±
0.5
±
1.0
OVD-02
±
1.0
±
2.5
Velocity decoder
Measurement range
Max. additional error referred to f = 1 kHz
OVD-01 1 0.5
10
15
Hz
Hz
kHz
-
-
- 10
15
20 Hz :
kHz :
kHz :
±
0.5 dB
±
0.1 dB
+
0.1 dB /
−
0.25 dB
5 and 25 0.5
10
20
Hz
Hz
kHz
-
-
- 10
20
50 Hz :
kHz :
kHz :
±
0.5 dB
±
0.1 dB
±
0.2 dB
125 and 1,000
1
1
These two measurement ranges can be used from the frequency 0 Hz (full DC capability).
0
20
Hz
kHz
-
- 20
50 kHz :
kHz :
±
0.1 dB
±
0.2 dB
OVD-02 5 0.5
10
100
Hz
Hz
kHz
-
-
- 10
100
250
Hz :
kHz :
kHz :
±
0.5 dB
±
0.1 dB
+
0.1 dB /
−
1 dB
25; 125 and 1,000 0.5
10
250
Hz
Hz
kHz
-
-
- 10
250
1.5
Hz :
kHz :
MHz:
±
0.5 dB
±
0.1 dB
+
0.5 dB /
−
1 dB
mm
s
---------- V
⁄
mm
s
----------
V
⁄