BEI Sensors ES25 Series Sealed Incremental Encoder

Sensata BEI Sensors ES25 Series 2.5″, 2,048 cpt, IP67 Environmentally Sealed Incremental Encoder

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Introduction

The Sensata BEI Sensors ES25 Series Environmentally Sealed Incremental Encoder is a rugged incremental encoder that is environmentally sealed through the use of a magnetic shaft coupling connection. This connection allows the encoder to be completely enclosed and sealed against water ingress. It is rated to IP67 and can operate while fully immersed in one meter of water for up to 30 minutes. The magnetic coupling also allows the encoder to be isolated from high shock and vibration. It also ensures the encoder is dust-tight and resistant to debris in the environment. Since the ES25 is not physically coupled to external equipment, the problem of shaft misalignment is eliminated, meaning no more broken couplings! The ES25 is ideal for applications with heavy wash-downs, temporary water immersions, and excessive environmental debris. It combines the high accuracy, repeatability, and robustness needed for use in harsh environments and can help reduce the costly downtime of your system.

 

Electrical Specifications

Parameter Specification
Supply Voltage 5 to 28 VDC
Voltage/Output Line Driver / Open Collector options
Current Requirements 100 mA typical, 250 mA max
Protection Reverse, overvoltage, short circuit
Code Incremental
Output Format 2-channel quadrature with index
Cycles per Turn 1 to 2048
Frequency Response 100 KHz

 

Mechanical Specifications

Parameter Specification
Mating Shaft Diameter 1/4” and metric versions
Magnetic Coupling Cover Engineered plastic
Starting Torque 0.5 oz-in max
Enclosure Aluminum (sealed castings)
Maximum RPM 5000 RPM
Moment of Inertia 60.2 x 10⁻⁴ oz-in-sec²
Maximum Acceleration 24,000 rad/s²
Torsional Flexibility 0.37 deg/oz-in
Kinematic Error 3 arc-min RMS
Weight 18 oz

 

Environmental Specifications

Parameter Specification
Operating Temperature 0°C to 70°C
Storage Temperature -25°C to 90°C
Shock 25 g, 11 ms
Vibration 5 to 2000 Hz @ 10 g
Humidity 100% RH with condensation
Enclosure Rating IP67 / IP68

 

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