Bently Nevada 991-25-70-02-00 Vibration Transmitter Sale

Product Introduction

The Bently Nevada 991-25-70-02-00 is a dedicated Thrust Transmitter for axial position monitoring. It accepts input from a non-contacting 3300 NSv Proximity Probe. It then provides a standard 4-20 mA output that directly reflects the target's position. Therefore, this device is essential for predictive maintenance and emergency shutdown systems. This specific model comes with a full-scale option of 25-0-25 mils. It also features a system length of 7.0 meters (23.0 feet). Moreover, the transmitter suits demanding industrial environments. It also incorporates non-interacting zero and span adjustments for simple field calibration.

Key Technical Specifications

The 991-25-70-02-00 delivers precise measurement within a linear range of 0.25 to 1.65 mm for Prox Out. This range makes it perfectly suited for current loop linear ranges of 0.6-0-0.6 mm or 25-0-25 mils. For output, the device produces a robust 4-20 mAdc signal over the full-scale range in a 2-wire configuration. In terms of accuracy, the loop performs within ±1.5% over the specified full scale range. This accuracy rating applies from the TEST signal input to the voltage measured across a 250 Ω loop resistance. Additionally, the unit includes a current limiting function at 23 mA typical. Meanwhile, the maximum loop resistance reaches 1,000 Ω including cable at 35 Vdc.

Power and Environmental Limits

This model requires a +12 to +35 Vdc input at the transmitter terminal. For operating conditions, the transmitter temperature range spans from -35°C to +85°C (-31°F to +185°F). In contrast, the storage temperature tolerances fall between -51°C and +100°C (-60°F to +212°F). Consequently, these wide environmental limits guarantee dependable performance in harsh industrial settings.

Mounting and Installation

The Bently Nevada 991 transmitter uses a DIN rail mount for easy cabinet installation. Specifically, this model's mounting option "02" indicates bulkhead screws. This choice simplifies the physical attachment process. Furthermore, the unit offers a Not OK/Signal Defeat feature for safety. For instance, the signal output drops below 3.6 mA within 100 µs of a Not OK condition. Likewise, the output restores within 0.1 seconds after the fault condition clears. Therefore, this rapid response protects downstream equipment effectively.

Dimensional Data and Weight

The transmitter remains compact and lightweight overall. Its total weight reaches just 0.43 kg (0.9 lbm). As a result, this low weight reduces stress on the mounting hardware. It also simplifies handling during installation or maintenance work.

Shipping and Packaging

We securely package every 991-25-70-02-00 for worldwide transit. Our packaging prevents damage from shocks and moisture during shipping. For delivery, we rely on premier global couriers. Hence, we primarily use FedEx, UPS, and DHL to ensure fast and trackable service.

Packaging List

• 1x Bently Nevada 991-25-70-02-00 Probe Vibration Transmitter

• 1x Mounting kit (Bulkhead screws as per option 02)

• 1x Product manual and installation guide

FAQ

1. What is the full-scale range of this specific model?
This specific model, the Bently Nevada 991-25-70-02-00, has a full-scale range of 25-0-25 mils. It is suitable for 0.6-0-0.6 mm linear ranges.

2. What type of probe does this transmitter accept?
It accepts a single non-contacting 3300 NSv Proximity Probe with an extension cable. It is specifically designed for axial thrust measurements.

3. How is the output signal configured?
The output is a 4 to 20 mAdc signal. It uses a 2-wire configuration to transmit data back to your control system.

4. What are the power requirements?
The transmitter requires a +12 to +35 Vdc input at the transmitter terminal. The loop resistance can be as high as 1,000 Ω at 35 Vdc.

5. Does the unit include adjustments for calibration?
Yes, it features non-interacting external adjustments for both zero and span, simplifying the calibration process in the field.