EPRO DF9011 Transient Speed Monitor

Overview

The EPRO DF9011 is a high-precision transient speed monitoring device engineered for turbines, compressors, pumps, and other high-speed rotating machinery. It provides continuous real-time speed measurements, with programmable overspeed and zero-speed alarms, ensuring reliable machine protection and operational safety across demanding industrial environments. Part of Emerson’s AMS Machinery Health product line, this instrument is designed for accurate, stable performance in power generation, petrochemical, steel, aerospace, paper, and nuclear applications.

Technical Specifications

Key Features

• Continuous monitoring of shaft speed with high-precision transient response

• Overspeed and zero-speed alarm functionality for critical protection

• Three configurable relays allow multi-level speed control

• Programmable teeth count, alarm thresholds, and operating ranges

• Bright LED display for easy readout in industrial environments

• Built-in self-diagnostics and EEPROM memory for operational reliability

Applications

Designed for high-speed machinery in:

• Steam, gas, and hydro turbines

• Industrial compressors and pumps

• Petrochemical and chemical processing plants

• Aerospace engine monitoring systems

• Paper and steel manufacturing

• Nuclear power plant turbine monitoring

FAQ

Q: What types of sensors are compatible with the DF9011?
A: The device works with standard eddy current probes or compatible speed sensors capable of generating ≥100 mV p-p signals.

Q: Can this device operate in outdoor environments?
A: Operating temperature is -10°C to +60°C. Proper enclosure is required for outdoor or high-humidity conditions.

Q: How are alarms configured?
A: Relays and alarm thresholds are programmable via the built-in interface, allowing for customized overspeed and zero-speed protection.

Q: Are there similar models?
A: The EPRO DF9010 and DF9012 provide similar speed monitoring functions but differ in relay count and frequency range.