Introduction to the Bently Nevada 200150-20-05 Accelerometer

The 200150-20-05 from Bently Nevada is a general purpose accelerometer. This unit works with Trendmaster 2000 and Trendmaster Pro monitoring systems. Engineers use the 200150-20-05 for vibration measurement on rotating machinery. Its ceramic shear sensing element delivers accurate and stable readings. Additionally, this accelerometer suits general industrial applications worldwide.

Ordering Information Breakdown

The model number 200150-20-05 contains specific configuration details. The base model 200150 represents the general purpose accelerometer family. The "-20" mounting stud option specifies a 3/8-24 thread. This option also includes one magnetic mount base for easy installation. The "-05" approvals option indicates multiple certifications. Specifically, this unit holds CSA, ATEX, and IECEx approvals for hazardous areas. The 200150-20-05 is proudly made in the U.S.A.

Electrical Specifications

All electrical specifications are measured at +25°C (+77°F). Sensitivity at 80 Hz reaches 10.2 mV/(m/s²) or 100 mV/g with ±12% tolerance. Measurement range spans ±245 m/s² which equals ±25 g. Frequency range referenced to 80 Hz falls between 10 and 1000 Hz. In cpm units, this range equals 600 to 60,000 cpm. Mounted resonant frequency exceeds 20 kHz or 1200 kcpm. Amplitude linearity stays within ±2% from 1 to 10 g peak. Transverse sensitivity measures ≤7% for accurate single-axis measurement.

Settling Time and Excitation

Settling time for the 200150-20-05 reaches ≤300 milliseconds. This settling occurs within 5% of the bias voltage. Excitation voltage required is 4.7 to 5.5 Vdc. Polarity is defined as SIG+ positive with respect to SIG-. Quiescent current consumption stays below 800 µA. Output bias voltage measures +2.5 ± 0.23 Vdc. These electrical characteristics ensure compatibility with Trendmaster systems.

Environmental Specifications

Axial shock limit reaches 49,050 m/s² peak or 5,000 g peak. Operating temperature range spans -40°C to +105°C (-40°F to +221°F). Hermetic sealing meets 5x10⁻⁸ atm•cc/s maximum leakage rate. Relative humidity tolerance reaches 100% condensing conditions. However, do not submerge the 200150-20-05 in liquid. The sealed construction protects against moisture and contamination.

Physical Dimensions and Materials

Size measures 17.5 mm across hex flats by 45.7 mm in height. In imperial units, this equals 11/16 inch by 1.8 inches. Weight is 58 grams or 2.0 ounces typical. Mounting thread is 3/8-24 female for secure attachment. Recommended mounting torque ranges from 2.7 to 6.8 N•m (2 to 5 ft•lbf). The sensing element uses durable ceramic material. Sensing geometry follows shear design for reduced base strain sensitivity. Housing and connector material is 316L stainless steel. This material provides excellent corrosion resistance for the 200150-20-05.

Extended Temperature Capability

The accelerometer assembly withstands -55°C to +121°C (-67°F to +250°F). This wider range applies to the sensor and connector materials. However, electrical specifications only apply within -40°C to +105°C. The DC4 compound, if used with mating cables, requires 24 hours cure time. After curing, the assembly provides its best moisture protection.

System Compatibility

The 200150-20-05 works with ProTIM option standard acceleration-to-velocity channel type (-01). This combination suits general application monitoring needs. The accelerometer connects to Trendmaster 2000 and Trendmaster Pro systems. Users should verify compatibility before ordering.

Installation Guidelines

Follow these steps to install the 200150-20-05 correctly.

1. Prepare Mounting Surface: Clean the machine surface where the magnetic base will attach. Remove any dirt, oil, or loose paint.

2. Attach Magnetic Base: Place the 3/8-24 magnetic mount base on the prepared surface. Ensure full contact between magnet and machine.

3. Install Accelerometer: Screw the 200150-20-05 into the magnetic base by hand. Then tighten to 2.7 to 6.8 N•m torque.

4. Connect Cable: Attach a compatible Bently Nevada cable to the accelerometer connector. Hand-tighten the coupling nut only.

5. Connect to Monitor: Route the cable to your Trendmaster system. Connect to the acceleration-to-velocity input channel.

6. Verify Operation: Apply excitation voltage of 4.7 to 5.5 Vdc. Check the output bias voltage for +2.5 Vdc nominal reading.

Package Contents

Your 200150-20-05 shipment includes the following items:

• One Bently Nevada 200150-20-05 general purpose accelerometer

• One 3/8-24 magnetic mount base (pre-installed)

• One installation instruction sheet

• One calibration certificate

• One anti-static protective bag

Common FAQs

1. Can I use the 200150-20-05 in hazardous locations?
Yes, the 200150-20-05 holds CSA, ATEX, and IECEx approvals. Always follow local installation codes for hazardous areas.

2. What is the difference between 200150-20-05 and standard accelerometers?
This model includes a magnetic mount base and multiple approvals. The 200150-20-05 is specifically designed for Trendmaster systems with quick installation needs.

3. How do I know if my Trendmaster system supports this accelerometer?
Check that your system uses acceleration-to-velocity channel type (-01). The 200150-20-05 works with ProTIM option standard channels.

4. Can I mount this accelerometer permanently with adhesive?
No, the 200150-20-05 is designed for magnetic mount only. For permanent installation, order a model with a stud mount option.

5. What happens if I exceed the axial shock limit of 5,000 g?
Exceeding this limit may damage the ceramic sensing element. The 200150-20-05 could produce inaccurate readings after severe shock events.

Conclusion

The Bently Nevada 200150-20-05 delivers reliable vibration measurement for general applications. Its magnetic mount enables quick installation on ferrous machine surfaces. Multiple hazardous area approvals expand its usable locations. The ceramic shear design provides stable performance over time. For general purpose monitoring with Trendmaster systems, choose the 200150-20-05 accelerometer.