VPT351 Valve Position Sensor
Valve Position Sensor, Accurate, Positional Measurement 10-25mm, Designed Specifically for the Monitoring of Hydraulic Valve.
The VPT351 Linear Valve Position Sensor can provide accurate, positional measurement over a span of 10-25mm and is designed specifically for the monitoring of hydraulic valves.
- Accurate measurement of spool valve position
- Measurement range of 10-25mm
- Hall-effect, non-contacting sensing
- Working pressure up to 420bar (5880psi)
- Burst pressure up to 600bar (8400psi)
- Analog output – 0.5-4.5V or 0.2-4.8V
- 4-20mA output option
- PWM output option
- Supply voltage – 5Vdc and 9-32Vdc
- Choice of output polarities
- M18 mounting thread
- ISO6149 compliant
- Operating temperature -40°C to 85°C
- Sealed to IP69k
- AMP or Deutsch connector options
- Flying-lead option
Modern-day safety directives for machines, including on- and off-highway vehicles, require that correct hydraulic valve operation is assured. This means that spool valves often need to be fitted with sensors that can measure the actual valve position and feed this information back to the machine’s controlling electronics, which can then determine if the valve is in a safe position for the intended operation. Traditionally, these small-stroke linear sensors have been based on inductive technology but a more cost-effective approach is to use Hall-effect sensing, which is also non-contacting so can achieve equal levels of reliability.
The VPT351 can provide accurate, positional measurement over a span of 10-25mm and is designed specifically for the monitoring of hydraulic valves. The transducer can operate from either a 5V supply or an unregulated supply in the range of 9-32V, so making it suitable for vehicle applications.
A choice of output types is available: analog voltage in two spans, 0.5-4.5V or 0.2-4.8V; 4-20mA current loop; or one of three PWM frequencies. Each of the output types can have its full span set to correspond to the selected measurement range, while the polarity of the output is also configurable. The sensor and associated electronics are also shielded against electromagnetic disturbances.
Mounting to the valve block is via a standard M18 thread and an O-ring is fitted to ensure reliable sealing at operating pressures up to 420bar (5880psi), while being able to withstand periods of pressure as high as 600bar (8400psi).
Connection options are over-molded, industry-standard AMP Superseal or Deutsch DT04 series connectors, or simple flying leads for customer termination. Dependent on the type of connector used, sealing as high as IP69k can be achieved.
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Specifications
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Mechanical
Life 10 million cycles (spring life) - Measurement Range (min.) 25mm - Working Pressure (max) 420 bar - Burst Pressure (max) 600 bar - Mounting M18 x 1.5, ISO6149 - Electrical
Analog Output 0.5-4.5V or 0.2-4.8V - Supply Voltage 5Vdc and 9-32Vdc - Output Polarities Choice (refer to brochure) - - Refer to brochure for complete specifications Each of the output types can have its full span set to correspond to the selected measurement range, while the polarity of the output is also configurable Environmental
Operatig Temperature −40°C to +85°C - Sealing 'IP68, IP69K (manufacturer’s ratings apply to connectors) - Vibration BS EN 60068 - 2 - 64, 1995 sec. 8.4 (31.4grms), 20 - 2000Hz - Shock 1m drop to concretre - Electromagnetic Interference EN 61000 - 4 - 3:1999 80 - 1000MHz & 1.4 - 2.7GHz Voltage/PWM output to 100V/m Current output to 75 V/m - Salt Spray BS EN 60068 - 2 - 52 test Kb severity - Options
4-20mA output option - PWM output option - Flying-leads - Connection options - Markets
Mobile Vehicles - Applications
On- or Off- Highway vehicles - Specialty Vehicle Applications - Mobile Cranes - Construction Vehicles - - Requiring a feedback system for hydraulically-driven mechanisms -
Market Applications
Agricultural Machinery | Vehicle Cab Designs using Human-Machine Interfaces (HMI)
GS Global Resources is highly experienced in working with agricultural machinery designers to provide safety-critical components and sub-systems that not only […] Read More
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