3300/50 Tachometer, China 3300/50 Tachometer Manufacturers, Suppliers, Factory

Overview

Place of Origin:	USA
Brand Name:	Bently Nevada
Model Number:	3300/50
Packaging Details:	Original new Factory Sealed
Delivery Time:	5-7 days
Payment Terms:	T/T
Supply Ability:	In stock

Quick Detail

Product Name	3300/50 Tachometer
Function	Measures shaft rotational speed, acceleration, and provides zero speed output; accepts two transducer inputs with internal voting logic; provides Alert status via relay contacts
Signal Inputs	Accepts two transducer signals from Bently Nevada 3300, 7200, or 3000 series proximity probes; magnetic pickups (not recommended for zero speed)
Input Impedance	10 kΩ
Power Consumption	Nominal 2.5 W
Monitor Range	Shaft speed: 1 to 99,999 rpm; Rotor acceleration/deceleration: -9,999 to 9,999 rpm/min; Zero speed <100 rpm
Signal Conditioning Accuracy	±1 rpm for speed; ±20 rpm/min for rotor acceleration; specified at +25°C (+77°F)
Transducer Conditioning Auto Threshold	10 Hz to 10 kHz (≥600 rpm for 1 event/rev)
Transducer Conditioning Duty Cycle	1% minimum
Voltage Compliance (Current Outputs)	0 to +12 Vdc; load resistance 0–600 Ω with +4 to +20 mA option
Buffered Transducer Outputs	One coaxial connector per transducer on front panel; short-circuit protected
Output Impedance	100 Ω
Transducer Supply Voltage	User-programmable via Power Supply for -24 Vdc or -18 Vdc; current limited per monitor
Dimension:	5.1x20.3x30.5cm
Weight:	1.5 kg

Description

The 3300/50 Tachometer continuously measures shaft rotational speed from 1 to 99,999 rpm, rotor acceleration/deceleration from -9,999 to 9,999 rpm/min, and provides zero-speed output below 100 rpm. The 3300/50 Tachometer accepts two transducer signals from Bently Nevada 3300, 7200, or 3000 series proximity probes, with internal voting logic to prevent false readings if a single transducer fails. Nominal power consumption is 2.5 W, with 10 kΩ input impedance and voltage/current outputs (0–+12 Vdc, +4 to +20 mA) through 100 Ω output impedance. Buffered coaxial outputs per transducer are short-circuit protected, and transducer supply voltage is user-programmable for -24 Vdc or -18 Vdc. Signal conditioning accuracy is ±1 rpm for speed and ±20 rpm/min for rotor acceleration at +25°C. Operating temperature is 0°C to +65°C, storage -40°C to +85°C, and relative humidity up to 95%. The non-multiplexing 3300/50 Tachometer provides green LED OK indicators, red Alert LEDs for first-out conditions, and Bypass LED functions, enabling automated monitoring and integration with control systems for real-time rotational speed management in turbines, compressors, and other rotating machinery.

Applications

Monitor turbine shaft speed with high precision
The 3300/50 Tachometer measures rotational speeds from 1 to 99,999 rpm and outputs real-time voltage/current signals to PLCs or DCS systems, allowing precise automated control of turbines and generators.

Measure rotor acceleration for automated protection
Using ±20 rpm/min signal conditioning, the 3300/50 Tachometer tracks rotor acceleration/deceleration, triggering automated protection sequences in compressors, pumps, or high-speed rotating equipment.

Enable zero-speed monitoring and interlocks
The 3300/50 Tachometer provides zero-speed output below 100 rpm, activating automated start/stop sequences or safety interlocks for large industrial machinery.

Specifications

Operating Temperature	0°C to +65°C (+32°F to +150°F)
Storage Temperature	-40°C to +85°C (-40°F to +185°F)
Relative Humidity	Up to 95%, non-condensing
Rack Space Requirement	One rack position (except positions 1 & 2 reserved for Power Supply and System Monitor)
LED Indicators OK	One green LED per transducer; OFF = speed <1 rpm or >99,999 rpm; flashing 5 Hz = error codes stored; red Bypass LED ON if monitor bypassed
LED Indicators Alert	Two red LEDs per channel for Alert 1 and Alert 2; flashing = First Out; drives Rack First Out Alert Bus
LED Indicators Bypass	One red LED indicates Alert 2 Bypass and Rack/Monitor Bypass functions

Competitive Advantage

High-accuracy measurement for automated speed control
The 3300/50 Tachometer achieves ±1 rpm speed accuracy and ±20 rpm/min acceleration accuracy, supporting precise automated monitoring and control of high-speed machinery.

Buffered outputs with short-circuit protection
The 3300/50 Tachometer provides front coaxial and rear terminal buffered outputs with 100 Ω impedance, ensuring safe connection to control systems and data acquisition equipment.

Low-power operation for multi-monitor racks
With only 2.5 W nominal power consumption, the 3300/50 Tachometer can be installed alongside multiple monitors in automation racks without exceeding power limits.

Automated fault detection with dual-transducer voting
The 3300/50 Tachometer prevents false speed indications when one transducer fails, enhancing automated control reliability and reducing the risk of unnecessary shutdowns in industrial processes.