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  • 3500/50M-01-01
  • 3500/50M-01-01-1
  • 3500/50M-01-01-2
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3500/50M-01-01

Bently Nevada 3500/50M Two-Channel Tachometer

In stock (14 units), ready to be shipped

  • Manufacturer: Bently Nevada

  • Product No.: 3500/50M-01-01

  • Product Type: Temperature Monitor

  • Product Origin: USA

  • Payment:T/T, Western Union

  • Weight: 820g

  • Shipping port: Xiamen

  • Warranty: 12 months

30-Day Return Policy · 12-Month Warranty
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  • 24/7 Support
  • Quality Assurance

Description

Product Overview

The 3500/50M-01-01 is a two-channel tachometer module for speed monitoring of turbines, compressors, and rotating machinery. It accepts proximity probe or magnetic pickup signals, delivering accurate RPM measurements up to 99,999 rpm. Designed for the 3500 rack, it provides reliable speed, rotor acceleration, and zero-speed detection.

Technical Configuration

I/O Module Type: 01 – Internal Terminations

The 01 suffix designates an I/O module with internal terminations. This eliminates external termination blocks, simplifying installation and reducing wiring complexity.

Agency Approval: 01 – cNRTLus (Class I, Div 2)

The 01 approval certifies the module for Class I, Division 2 hazardous areas. Complies with cNRTLus standards for use in industrial environments with potentially flammable atmospheres.

Technical Specifications

Parameter Specification
Channels 2 per module
Input Signal +10.0 V to -24.0 V (internal limiting)
Input Impedance 20 kΩ (standard) / 40 kΩ (TMR) / 7.15 kΩ (Internal Barrier)
Transducer Power 24 Vdc, 40 mA max per channel
Max Input Frequency 20 kHz
Max Full Scale Range 99,999 rpm
Events per Revolution 1 to 255 (Rotor Accel/Zero Speed) / 0.0039 to 255 (others)
Min Frequency (Proximity) 0.0167 Hz (1 rpm @ 1 event/rev)
Min Frequency (Magnetic) 3.3 Hz
RPM Accuracy (<100 rpm) ±0.1 rpm
RPM Accuracy (100–10,000 rpm) ±1 rpm
RPM Accuracy (10,000–99,999 rpm) ±0.01% of true speed
RPM/Min Accuracy ±20 rpm/min
Power Consumption 5.8 W typical
Monitor Module (H x W x D) 241.3 mm x 24.4 mm x 241.8 mm
Monitor Weight 0.82 kg (1.8 lbs)
I/O Module (non-barrier) (H x W x D) 241.3 mm x 24.4 mm x 99.1 mm
I/O Module (non-barrier) Weight 0.20 kg (0.44 lbs)
I/O Module (internal barrier) (H x W x D) 241.3 mm x 24.4 mm x 163.1 mm
I/O Module (internal barrier) Weight 0.46 kg (1.01 lbs)
Rack Space 1 full-height front slot (monitor) + 1 rear slot (I/O)

Installation & Maintenance

Wiring & Termination

Internal termination eliminates external blocks. Connect proximity probes or magnetic pickups to I/O inputs. Use shielded twisted-pair cables for signal integrity. For hazardous area installations, the internal barrier option provides intrinsic safety.

Configuration

Configure speed setpoints, channel types, and events per revolution via 3500 Configuration Software (v4.20+). Requires 3500/22M Firmware Rev 1.70+ and 3500/50M Firmware Rev 5.30+. Not compatible with 3500/20.

System Requirements

To add this module to an existing 3500 system: 3500/22M Firmware Rev 1.70, 3500/01 Software v4.20+, 3500/02 v2.52+, 3500/03 v1.52+, and 3500/50M Firmware Rev 5.30+.

Engineering Advantages

High-Speed Precision

Measures up to 99,999 rpm with accuracy of ±0.01% above 10,000 rpm. Supports input frequencies up to 20 kHz and 255 events per revolution for detailed speed analysis.

Versatile Transducer Support

Accepts both proximity probes and magnetic pickups. Three input impedance options (20kΩ, 40kΩ, 7.15kΩ) accommodate standard, TMR, and internal barrier configurations.

Hazardous Area Ready

cNRTLus approval (Class I, Div 2) enables installation in potentially flammable environments. Internal barrier I/O modules provide additional safety for intrinsic safety applications.

Technical FAQs

Q1: What is the maximum RPM this module can measure?

A1: 99,999 rpm full scale with accuracy of ±0.01% of true shaft speed above 10,000 rpm. Maximum input frequency is 20 kHz.

Q2: What firmware versions are required for this module?

A2: Requires 3500/22M Firmware Rev 1.70+, 3500/50M Firmware Rev 5.30+, 3500/01 Software v4.20+, 3500/02 v2.52+, and 3500/03 v1.52+. Not compatible with 3500/20.

Q3: What is the difference between internal terminations and external terminations?

A3: The 01 option provides internal terminations – all connections are made directly on the I/O module. This eliminates external termination blocks, reducing installation time and potential wiring errors.

🏷️ Tags: Temperature Monitor
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  • Ensure compatibility with your current machinery or control systems.
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  • Follow manufacturer instructions and best practices during installation.

In-stock items are typically dispatched the same business day. For products not currently in stock, dispatch times may vary based on availability. International shipping is available, and shipping costs are calculated according to destination, weight, and carrier selection.

Returns are accepted within 30 days of receipt, provided items are unused and in original condition. Return shipping costs are the responsibility of the customer. Please contact us before returning any item to receive return authorization.

For more details, please review our Shipping & Return Policy.

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