| Sensor Module Measurements |
|
| RMS Velocity |
|
| RMS Acceleration |
|
| True Peak Acceleration |
|
| Battery voltage at maximum load |
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| System Information Provided |
|
| Date |
|
| Time |
|
| Sensor ID |
|
| RMS Velocity |
|
| Derived Peak Velocity |
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| RMS Acceleration |
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| Derived Peak Acceleration |
|
| True Peak Acceleration |
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| Crest Factor |
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| Battery Status |
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| RF Status |
|
| Radio & Standard |
Specification |
| Radio Standard |
Propietary Extended Range RF (ERRF) |
| Modulation Mode |
Narrowband Frequency Shift Keying (NFSK) |
| Noise Floor |
-155dBm |
| Radio Sensitivity |
-145 dBm |
| Frequency Band (unlicensed) |
902-928 MHz US |
| Maximum Power (ERP) |
1 mW |
| Maximum Transfer Rate |
20 bps |
| Typical Power vs Transfer Rate |
20 bps @ -145 dBm sensitivity |
| Sensor Programming Adapter |
9-pin, RS232 interface |
| Programming Adapter-to-Sensor Interface |
CMOS Signal over micro USB connector |
| Number of receivers handled by a single computer |
1 |
| Sensors/receiver @ 3 meas/day, 1% miss rate |
~800 |
| Sensors/receiver @ 3 meas/day, 5% miss rate |
~4000 |
| Antenna |
Integral 1/2" Ceramic |
| Performance |
Specification |
| RMS Velocity |
Digital Integration |
| Velocity HP Filter |
2 Hz, 1-pole RC |
| Velocity LP Filter |
2500 Hz, 3-pole Chebyshev |
| Velocity Resolution |
0.001 ips |
| Derived peak velocity |
1.414 x RMS Velocity |
| RMS Accleleration (HFE) |
Time Sample Sum |
| Acceration HP Filter |
2500, 4-pole Chebyshev |
| Acceration LP Filter |
15,000, 3-pole Chebyshev + 1-pole RC |
| Acceleration Resolution |
0.005 g |
| Derived Peak Acceleration |
1.414 x RMS Acceleration |
| True Peak Acceleration (absolute value) |
≥50 μs pulse width |
| Crest Factor |
True Peak / RMS Acceleration |
| ADC/dynamic range |
16 bit / >90 dB |
| Measurement Range |
± 20 g |
| Frequency Response (±3 dB) |
3 Hz to 15 kHz |
| Residual Vibration Level (RVL) |
|
| If RVL = 0 |
Collect on normal interval |
| If RVL > 0 |
Collect data if RMS velocity > RVL |
| Operation Verification |
LED |
| Environmental |
Specification |
| Overload Limit (Shock) |
TBD |
| Temperature Range (Electronics) |
-20° to 70° C |
| Temperature (Base) |
-54° to 121° C |
| Humidity |
5% - 95%, non-condensing |
| Sensor Module Enclosure Rating |
TBD |
| Electrical |
Specification |
| Power |
Saft 7.2V Lithium Battery, SR181263 |
| Replaceable |
Yes |
| Electrical Isolation (Case) |
>108 ohm |
| Physical |
Specification |
| Sensor Module Dimensions |
|
| Base Assembly |
1-3/8" Hex |
| Housing |
1.6" Dia |
| Height (overall) |
4.5" |
| Weight (including battery pack) |
444 g |
| Mounting Thread |
1/4-28 Female |
| Mounting Torque |
2 to 5 ft-lb |
| Sensing Element (IMI 66213LPZ1) |
Ceramic Shear |
| Sensor Module Material |
|
| Base |
Stainless Steel |
| Housing Material |
Stainless Steel |
| Housing Cap (passes RF signal) |
Ploycarbonate |
| Mechanical Isolator |
Urethane |
| Mounting |
1/4-28 Stud |
| Sealing |
TBD |
| Data Storage |
Specification |
| Format |
ODBC |