acceleration in all three axes while also measuring
temperature and pressure. The recorders are
available with two enclosure options (aluminum or
polycarbonate), different measurement ranges (±16g
to ±2,000g), and an industry leading high sample rate
(up to 20 kHz on the piezoelectric and piezoresistive
accelerometers and up to 3.2 kHz on the DC response
MEMS accelerometer).
Their lightweight design and large surface area minimize
mass loading and enable two mounting options:
adhesive mounting using the industrial strength double
sided tape included with the product; or hard mounting,
for an even higher frequency response. Its rugged
enclosure and wide temperature operating range (-40°C
to 80°C) enable the Slam Stick to perform in many
harsh environments.
A micro-USB receptacle allows for quick and easy
connection to a computer where data can be analyzed
with Midé’s provided software package -
Slam Stick
Lab.
The software also enables configuration of the
device to meet a variety of customer needs. Triggers
include time delays, calendar date/time wake up and
acceleration, temperature and/or pressure triggers.
Midé includes a
N.I.S.T. traceable calibration certification.
SELECTING THE RIGHT SLAM STICK
(LESS THAN)
(MORE THAN)
<
500
Hz
>
500
Hz
Shock &
Vibration
CAPACITIVE MEMS
Vibration
& Shock
PIEZOELECTRIC
& Vibration
PIEZORESISTIVE
Shock
PN: LOG-0002/0003/0004
|
REVISION No. 011
|
DATE: 1-09-2017
|
Web:
www.mide.com
|
Contact:
mide.com/contact-us
1
of
7
Sensors
•
Triaxial Accelerometers
-
DC Response MEMS (±16 / 200g)
•
Pressure
•
Temperature
Applications
•
General purpose testing
•
Low frequency vibration
Dimensions
3.00 [76.2]
2.75 [69.9]
0.13 [3.3]
1.18
.93
[23.6] [29.8]
.59 [15]
1.18 [29.8]
Sensors
•
Triaxial Accelerometers
-
Piezoelectric (±25 / 100 / 500 / 2,000g)
-
Optional DC Response MEMS (±16 /
200g)
•
Pressure
•
Temperature
Applications
•
Qualification tesing
•
High frequency vibration
Dimensions
3.00 [76.2]
2.75 [69.9]
0.13 [3.3]
1.18
.93
[23.6] [29.8]
.59 [15]
1.18 [29.8]
Sensors
•
Triaxial Accelerometers
-
Piezoresistive (±100 / 500g)
-
DC Response MEMS (16 / 200g)
•
Pressure
•
Temperature
Applications
•
Shock testing
•
High end testing
Dimensions
3.00 [76.2]
2.75 [69.9]
3.26 [0.129]
.93
1.18
[23.6] [29.8]
.72 [18.3]
1.18 [29.8]
PN: LOG-0002/0003/0004
|
REVISION No. 011
|
DATE: 1-09-2017
|
Web:
www.mide.com
|
Contact:
mide.com/contact-us
2
of
7
ACCELEROMETER DC MEMS
Triaxial DC MEMS Accelerometer
Products
Sampling Rate Per Channel:
Frequency Response Within
±5% Accuracy
Transverse Sensitivity
Low-Pass Filter
Measurement Range
Broadband Noise
Resolution1
1
Comes standard in the Slam Stick C and S and add on option in the Slam Stick X
User Selectable from 12.5 Hz to 3.2 kHz
Selectable with Provided Software
X and Y Axis:
0 Hz to 1,000 Hz
See Frequency Response Plot
Z Axis:
0 Hz to 500 Hz
<10 %
2
nd
Order (Filter Frequency is 1/2 Sample Frequency)
±16 g
±200 g
< 0.01 g RMS
< 0.14 g RMS
Reduces with slower sample rates
0.004 g
0.05 g
13-bit
Resolution at a sample rate of 1,600 Hz or greater is reduced to 12-bit
60
50
40
30
20
10
0
-10
-20
-30
-40
DC MEMS - X&Y Axis
DC MEMS - Z Axis
Slam Stick C Frequency Response
4.1 dB
2.9 dB
Amplitude Deviation (%
1.6 dB
0 dB
-1.9 dB
1
10
Frequency (Hz)
100
1,000
-4.4 dB
10,000
Note that the MEMS accelerometer has a DC response (can measure down to 0 hertz). The plot only goes to 1 Hz because it is on a logarithmic scale. The accelerometer data
was generated with the sample rate at 3.2 kHz, and the unit taped to the mounting fixture.
BATTERY & STORAGE CAPACITY
Per Channel
Frequency (Hz)
12.5
100
1600
3200
Time available for 1 GB
(hours)
4000
500
31
16
Battery Life
(hours)
22.0
20.0
18.0
14.5
ACCELEROMETER OVERVIEW
The triaxial capacitive MEMS accelerometer is great for
general purpose testing; but it has some limitations. Its
data quality may not be good enough for higher-end
engineering applications. But these accelerometers are
much lower cost than alternatives and so Midé is able
to offer the Slam Stick C, which only has this type of
accelerometer, at a much lower cost than the X and S.
See our
blog on accelerometer selection.
PN: LOG-0002/0003/0004
|
REVISION No. 011
|
DATE: 1-09-2017
|
Web:
www.mide.com
|
Contact:
mide.com/contact-us
3
of
7
ACCELEROMETER PIEZOELECTRIC
Triaxial Piezoelectric Accelerometer
Products
Sampling Rate Per Channel:
Frequency Response Within
±5% Accuracy (X, Y & Z Axis)
Transverse Sensitivity
Low-Pass Filter
Measurement Range
Broadband Noise
1
Resolution
2
1
2
Comes standard in the Slam Stick X
User Selectable from 100 Hz to 20 kHz
Aluminum Enclosure:
5 Hz to 2,000 Hz
Polycarbonate Enclosure: 5 Hz to 1,000 Hz
<10 %
5
th
Order Hardware Butterworth (Linear Phase & Software Tunable)
±25 g
±100 g
±500 g
±2,000 g
< 0.01 g RMS < 0.04 g RMS < 0.20 g RMS < 0.80g RMS
0.0008 g
0.003 g
0.015 g
0.06 g
Selectable with Provided Software
See Frequency Response Plot
16-bit
Tested with a 20 kHz sampling rate and with a 5 kHz filter frequency. Noise levels will be lower with slower sampling rate and/or lower filter frequency.
The piezoelectric accelerometer sampled at 20kHz with a 5 kHz filter. Adequate compression of the tape was achieved by first bolting the unit to allow the tape to set, then removing
the bolts. The mounting torque of these bolts was 70 in-oz.
BATTERY & STORAGE CAPACITY
Per Channel Sampling
Frequency (Hz)
100
1,000
5,000
20,000
Time available for 2 GB
(hours)
1000
100
20
5
Battery Life
(hours)
15.5
15.0
13.0
5.5
ACCELEROMETER OVERVIEW
The triaxial piezoelectric accelerometer, when compared
to the DC MEMS accelerometer, offers a higher data
quality. Piezoelectric accelerometers are the most
popular because of their versatility but they have two
disadvantages: an AC coupling, and their charge
amplifier can become saturated during high frequency
and/or amplitude shock events.
See our
blog on accelerometer selection.
If the DC Accelerometer is on it will reduce battery life by approximately 10%. It also
requires approximately 1GB storage for every 500 million samples.
PN: LOG-0002/0003/0004
|
REVISION No. 011
|
DATE: 1-09-2017
|
Web:
www.mide.com
|
Contact:
mide.com/contact-us
4
of
7
ACCELEROMETER PIEZORESISTIVE
Triaxial Piezoresistive Accelerometer
Products
Sampling Rate Per Channel:
Frequency Response Within
±5% Accuracy (X, Y & Z Axis)
Transverse Sensitivity
Low-Pass Filter
Measurement Range
Broadband Noise
1
Resolution
2
1
2
Comes standard in the Slam Stick S
User Selectable from 100 Hz to 20 kHz
Aluminum Enclosure: 0 Hz to 2,000 Hz
<10 %
5
th
Order Hardware Bessel (Linear Phase & Software Tunable)
±100 g
±500 g
< 0.08 g RMS
< 0.40 g RMS
0.003 g
0.015 g
Selectable with Provided Software
See Frequency Response Plot
16-bit
Tested with a 20 kHz sampling rate and with a 5 kHz filter frequency. Noise levels will be lower with slower sampling rate and/or lower filter frequency.
Note that the Piezoresistive accelerometer has a DC response (can measure down to 0 hertz). The plot only goes to 1 Hz because it is on a logarithmic scale. The piezoresistive
accelerometer sampled at 20kHz with a 5 kHz filter. The unit was bolted down with a mounting torque of 100 in-oz.
BATTERY & STORAGE CAPACITY
Per Channel Sampling
Frequency (Hz)
100
1,000
5,000
20,000
Time available for 2 GB
(hours)
1000
100
20
5
Battery Life
(hours)
14.0
13.5
11.0
3.5
ACCELEROMETER OVERVIEW
The piezoresistive accelerometer offers similar
advantages as the piezoelectric in terms of data quality.
But they have the added benefit of being capable of
measuring static accelerations and low frequency
vibrations. They also have internal gas damping to widen
the dynamic frequency range of the accelerometer.
These accelerometers are increasingly becoming more
popular for shock and vibration testing applications.
See our
blog on accelerometer selection.
If the DC Accelerometer is on it will reduce battery life by approximately 10%. It also
requires approximately 1GB storage for every 500 million samples.
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