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Brand: PCB Piezotronics
PCB Piezotronics 608A11 Industrial ICP Accelerometer 100 mV/g
Description
A low-cost general purpose accelerometer with a molded cable
The PCB Piezotronics 608A11 is a general purpose industrial ICP accelerometer with a ceramic shear sensing element, a stainless steel housing and a 10 ft integral polyurethane cable that leaves the top of the sensor. Its sensitivity is 100 mV/g over 0.5 to 10,000 Hz, the usual range for route-based and continuous monitoring of pumps, fans, motors and gearboxes.
The manufacturer lists it under its stock program with single point ISO 17025 accredited calibration. Because the cable is molded in, there is no connector to loosen, and the sensor is rated IP68 for wet or dirty plant areas. As an ICP (IEPE) sensor it needs only a constant current supply of 2 to 20 mA at 18 to 28 VDC.
Technical specifications
| Parameter | Specification |
|---|---|
| Sensitivity (+/-15 %) | 100 mV/g (10.2 mV per m/s2) |
| Measurement range | +/-50 g (+/-490 m/s2) |
| Frequency range (+/-3 dB) | 0.5 to 10,000 Hz (30 to 600,000 cpm) |
| Resonant frequency | 22 kHz typical |
| Broadband resolution (1 to 10,000 Hz) | 350 ug typical |
| Non-linearity | +/-1 % |
| Transverse sensitivity | 7 % or less |
| Shock limit | 5,000 g pk |
| Temperature range | -65 to +250 F (-54 to +121 C) |
| Enclosure rating | IP68 |
| Excitation voltage | 18 to 28 VDC |
| Constant current excitation | 2 to 20 mA |
| Output impedance | Below 150 ohm |
| Output bias voltage | 8 to 12 VDC |
| Settling time / discharge time constant | 2 s or less / 0.3 s or more |
| Spectral noise at 10 / 100 / 1,000 Hz | 8 / 5 / 4 ug per root Hz |
| Sensing element / geometry | Ceramic / shear |
| Housing / sealing | Stainless steel / molded |
| Size (hex x height) | 9/16 in x 2.5 in (14 mm x 64 mm) |
| Weight (with cable) | 3.5 oz (99.3 g) |
| Mounting | 1/4-28 female thread, stud mount; torque 2 to 5 ft-lb (2.7 to 6.8 Nm) |
| Electrical connection | Top exit, 10 ft (3 m) polyurethane twisted shielded pair cable |
| Supplied accessories | Model 081A40 mounting stud; ICS-2 single-point calibration at 100 Hz |
Options, mounting and functional safety
The spec sheet lists optional versions with prefixes: EX for hazardous area approval (contact the factory), LB for low bias voltage, M for metric mounting (stud M081A61 replaces 081A40) and TO for temperature output. The manual stresses that mounting decides the upper frequency response: a flat, smooth surface with the stud torqued to the specified value gives the best result, while adhesive or magnetic mounts reduce the usable high frequency range.
The manual also contains a PCB declaration of conformity for functional safety to IEC 61508 for a group of series that includes the 608 series, listing SIL 2, device type B, hardware fault tolerance 0 and a safe failure fraction of 79.59 percent. Check with us whether that declaration applies to your exact part number before relying on it in a safety loop.
What to confirm before ordering
Model suffixes matter at PCB, so send the complete part number with any option prefix, the cable length, the machine type and the monitoring system input. For a ruggedised alternative with a sealed connector, see the PCB Piezotronics 603C01.
Documents and quotation
The PCB installation and operating manual, which encloses the 608A11 specification sheet, is attached. Seven Star LLC is an independent supplier in Muscat. Related sensors are in Vibration Monitoring.
Datasheets & Documents
- Manual PCB Piezotronics 608A11 Installation and Operating Manual (with spec sheet) Download
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About brand
PCB Piezotronics, founded in 1967 in Depew, USA, makes sensors for dynamic measurement: accelerometers, pressure and force sensors and measurement microphones, most of them using the company's ICP built-in electronics. Test laboratories and machinery engineers know them as PCB sensors. Seven Star LLC sources and supplies PCB Piezotronics accelerometers and acoustic sensors for customers in Oman, including the models described below.
PCB sensors listed here
Model 356A01 is a miniature triaxial ICP accelerometer with a ceramic shear element and titanium housing. PCB gives it a nominal sensitivity of 5 mV/g, a range of 1000 g peak and a weight of about one gram; it is adhesive mounted and has an integral four-conductor cable. Model 378B02 is a 1/2-inch prepolarized free-field microphone supplied with a mated ICP preamplifier and TEDS, at 50 mV/Pa.
Ordering PCB sensors: what we need
Send the exact model number, including any prefix letters. PCB puts option codes in front of the base model, so a high-temperature or metric version carries a different prefix. Add the cable length and connector, and the signal conditioner or analyzer input you are using. For GCC test laboratories we can request the manufacturer's calibration certificate with the sensor.
Browse PCB Piezotronics products by category: Vibration.
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Frequently Asked Questions
What is the sensitivity of the 608A11?
100 mV/g with a tolerance of +/-15 percent.
What frequency range does it cover?
0.5 to 10,000 Hz at +/-3 dB.
How is it powered?
By a constant current source of 2 to 20 mA at 18 to 28 VDC, typical for ICP sensors.
Does it have a connector?
No, it has a molded integral 10 ft cable exiting from the top.
Is it sealed against water?
Yes, the enclosure rating is IP68.
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