Wall-mounted Dual-channel Intelligent Rotational Speed Monitoring Protector

# Introduction

This industrial dual-channel tachometer monitoring and protection instrument delivers a cost-effective continuous monitoring and protection solution specially designed for large rotating machinery. It can accurately monitor equipment speed status in real time and issue timely warnings for abnormal operating conditions, providing reliable safeguards for the safe and stable operation of equipment.

Targeting numerous industrial sectors including petrochemical, oil & gas, power generation, water treatment, pulp and paper, mechanical processing, mining, cement and more, this product is engineered for medium-critical to low-critical vital mechanical equipment in relevant industries. Its economical and practical configurations fulfill the requirements of continuous online monitoring and protection.

It is widely compatible with various large rotating machinery such as large feed water pumps, chemical process pumps, large cooling tower fans, tunnel ventilators, blowers, induced draft fans, coal mills, centrifuges, mixers, large agitators, turbo compressors, reciprocating compressors, drive motors, generators and water turbines. It serves as an optimal economical solution for on-site industrial equipment condition monitoring, fault prevention and safety protection.

## Technical Specifications

### Display and Human-Machine Interface

Equipped with a 3.5-inch touch screen to facilitate user-friendly human-machine interaction operations.

### Rotational Speed Measurement and Display

Real-time dual-channel rotational speed measurement and numerical display.

Rotational speed measurement resolution and accuracy: ±1 RPM.

Equipped with proportional progress bars for intuitive visualization with a resolution accuracy of 1%.

Rotational speed measuring range: up to 65000 RPM.

Built-in maximum rotational speed value memory function.

### Operating Modes and Monitoring Functions

Dual-channel mode: Simultaneously monitors two rotational speed signals of rotating machinery with independent alarm outputs.

Accepts signal inputs from dual-channel rotational speed sensors, and monitors as well as displays sensor gap voltage in real time.

### Sensor Compatibility

Compatible with multiple types of rotational speed sensors including eddy current sensors, Hall effect sensors, magnetoresistive sensors, etc.

### Analog Outputs

2 analog output channels.

Default output: 4–20 mA.

Optional configuration: 2–10 V output.

### Relay Digital Outputs

4 relay digital output channels, corresponding respectively to Channel 1 Alarm 1, Channel 1 Danger 1, Channel 2 Alarm 1 and Channel 2 Danger 1.

Supports real-time visual indication of dynamic relay status.

Relay rating: 250 V AC / 5 A; 30 V DC / 5 A.

### Parameter Configuration

Independent parameter settings available for each channel, including sensor type, alarm threshold, danger threshold, alarm delay, measuring range and other parameters.

### Ambient Temperature Characteristics

Storage temperature range: -50 ℃ ~ +100 ℃.

LCD operating temperature range: -20 ℃ ~ +70 ℃.

Circuit operating temperature range: -40 ℃ ~ +85 ℃.

### Electromagnetic Compatibility (EMC)

EN 61000-6-4/A1:2011

EN 61000-6-2:2005