Manufacture	EPRO
Item No	PR9376/20
Article number	PR9376/20
Series	PR9376
Origin	Germany (DE)
Dimension	85*11*120(mm)
Weight	1.1 kg
Customs Tariff Number	85389091
Type	Hall Effect Speed/Proximity Sensor

EPRO PR9376/20 Hall Effect Speed/Proximity Sensor Non-contact Hall effect sensors designed for speed or proximity measurement in critical turbomachinery applications such as steam, gas and hydraulic turbines, compressors, pumps and fans. Functional principle: The head of the PR 9376 is a differential sensor consisting of a half-bridge and two Hall effect sensor elements. The Hall voltage is amplified many times by means of an integrated operational amplifier. The processing of the Hall voltage is carried out digitally in a DSP. In this DSP, the difference in the Hall voltage is determined and compared with a reference value. The result of the comparison is available at a push-pull output which is short-circuit proof for a short period of time (max. 20 seconds). If a magnetic soft or steel trigger mark moves at right angles (i.e. transversely) to the sensor, the sensor's magnetic field will be distorted, affecting the detuning of the Hall levels and the switching of the output signal. The output signal remains high or low until the leading edge of the trigger mark causes the half-bridge to be detuned in the opposite direction. The output signal is a steeply inclined voltage pulse. Capacitive coupling of the electronics is therefore possible even at lower trigger frequencies. Highly sophisticated electronics, hermetically sealed in a rugged stainless steel housing and the connecting cables insulated with Teflon (and, if required, with metal protective tubes), ensure safe and functional operation even in harsh industrial environments.Dynamic Performance Output 1 AC cycle per revolution/gear tooth Rise/Fall Time 1 µs Output Voltage (12 VDC at 100 Kload) High >10 V / Low <1V Air Gap 1 mm (Module 1),1.5 mm (Module ≥2) Maximum Operating Frequency 12 kHz (720,000 cpm) Trigger Mark Limited to Spur Wheel, Involute Gearing Module 1,Material ST37 Measuring Target Target/Surface Material Magnetic soft iron or steel (non stainless steel) Environmental Reference Temperature 25°C (77°F) Operating Temperature Range -25 to 100°C (-13 to 212°F) Storage Temperature -40 to 100°C (-40 to 212°F) Sealing Rating IP67 Power Supply 10 to 30 VDC @ max. 25mA Resistance Max. 400 Ohms Material Sensor – Stainless steel; Cable – PTFE Weight (Sensor only) 210 grams (7.4 oz)