Bently Nevada 200157-01-05 Trendmaster Pro Accelerometer Overview

The Bently Nevada 200157-01-05 is an enveloping Trendmaster Pro accelerometer. It is made in the U.S.A. by Bently Nevada. This sensor detects early bearing faults and cavitation effects. Users select the 200157-01-05 for roller element bearing monitoring. The accelerometer uses shear mode ceramic sensing elements. A 316L stainless steel housing provides excellent durability.

Technical Specifications of 200157-01-05

The Bently Nevada 200157-01-05 has a sensitivity of 10.2 mV per m/s². This equals 100 mV per g at 80 Hz reference. Sensitivity tolerance is ±12% at 80 Hz. Measurement range is ±245 m/s² which equals ±25 g. Frequency range is 10 Hz to 10,000 Hz (600 to 600,000 cpm). Mounted resonant frequency exceeds 20 kHz (1200 kcpm).

Amplitude linearity is ±2% from 1 to 10 g peak. Transverse sensitivity is less than or equal to 7%. Settling time within 5% of bias is 300 milliseconds maximum. Excitation voltage requirement is 4.7 to 5.5 Vdc. Quiescent current draw is less than 800 µA. Output bias voltage is +2.5 ± 0.23 Vdc.

Axial shock limit is 49,050 m/s² peak (5,000 g peak). Operating temperature range is -40°C to +105°C. In Fahrenheit, this range is -40°F to +221°F. Hermetic sealing is 5 x 10⁻⁸ atm•cc/s maximum. Relative humidity tolerance is 100% condensing for non-submerged use. The sensing element is ceramic with shear geometry.

The 200157-01-05 has a physical size of 17.5 mm hex by 45.7 mm height. Weight is 58 grams typical (2.0 ounces). Mounting thread is 3/8-24 female. Mounting torque range is 2.7 to 6.8 N•m (2 to 5 ft•lbf). Housing and connector material is 316L stainless steel. The -01 option means 3/8-24 thread with two adhesive mount frames. The -05 approval option includes CSA, ATEX, and IECEx certifications.

Installation Guidelines for Bently Nevada 200157-01-05

Mount the 200157-01-05 on a clean, flat bearing housing surface. Clean the mounting area with isopropyl alcohol first. Apply a thin layer of coupling grease to the mounting surface. Tighten the sensor to 2.7 to 6.8 N•m (2 to 5 ft•lbf). Do not overtighten or damage the threads. Use the two adhesive mount frames for temporary installations.

Connect the sensor to a Trendmaster Pro monitoring system. Apply 4.7 to 5.5 Vdc excitation voltage to the sensor. The SIG+ pin is positive with respect to SIG-. Verify output bias voltage is +2.5 Vdc at rest. Do not exceed the axial shock limit of 5,000 g peak. Avoid mounting near extreme heat sources above +105°C.

Package Contents of 200157-01-05

Your shipment includes these items:

One Bently Nevada 200157-01-05 accelerometer sensor

Two adhesive mount frames for temporary installation

One 3/8-24 mounting stud (installed)

One calibration certificate with sensitivity data

One installation and operation manual

The package does not include interface cables. You must order cables separately. No mounting adhesive is provided with this sensor.

Frequently Asked Questions about 200157-01-05

1. What is enveloping technology on the 200157-01-05?

Enveloping is a signal processing method in Bently Nevada 200157-01-05. It extracts high-frequency bearing fault signals. The sensor removes low-frequency vibration from machinery rotation. This helps detect early bearing defects before failure occurs.

2. Can I use 200157-01-05 in hazardous areas?

Yes, the 200157-01-05 with -05 approval has ATEX certification. It also has CSA and IECEx approvals for gas and dust environments. Check the specific zone and gas group requirements. Use an appropriate intrinsic safety barrier with the sensor.

3. What is the difference between 200157 and standard accelerometers?

The Bently Nevada 200157-01-05 is optimized for enveloping measurements. Standard accelerometers lack the enveloping channel type. This sensor works specifically with Trendmaster Pro systems using -06 channel type. It detects cavitation effects that standard sensors miss.

4. How do I test if my 200157-01-05 is working correctly?

Measure the output bias voltage on 200157-01-05 with a DC voltmeter. It should read +2.5 ± 0.23 Vdc with no vibration. Tap the sensor gently and watch for AC voltage response. Replace the sensor if bias voltage is out of range.

5. What is the settling time specification on this accelerometer?

The Bently Nevada 200157-01-05 settles within 300 milliseconds. This is the time to reach 5% of final bias voltage after power-up. Wait 300 ms before taking valid vibration data. This ensures accurate measurements from the sensor.

Compatibility and Application Notes

The Bently Nevada 200157-01-05 works with Trendmaster Pro systems. It requires ProTIM option -06 for standard acceleration-to-velocity with enveloping. Use this sensor for roller element bearing monitoring. It also detects certain cavitation effects in pumps. The shear mode ceramic element rejects base strain interference. This sensor is made in the U.S.A. with 316L stainless steel construction. The HS code for customs is 90318000. Dispose of this sensor according to local electronic waste regulations.