Bray 54-GS Series inductive proximity sensors are used for open/closed position monitoring of quarter-turn valve actuators and comply with the NAMUR/VDI VDE 3845 mounting standard. Available with PNP or DC 2-wire outputs, dual normally open signals, a sensing distance of 0 to 2.43 mm, and IP66/IP67 protection. Suitable for open/closed status feedback in high-pressure or corrosive washdown, dirty, and fast-cycling valve applications.
54-GS Series Proximity Sensor Product Image
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Bray 54-GS Series Inductive Proximity Sensors
Inductive proximity sensors for quarter-turn valve position monitoring, supporting PNP outputs
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Specifications
- Switching Function
- PNP: 2 x normally open (NO); DC 2-wire output: 2 x normally open (NO)
- Output Type
- PNP, DC 2-wire output
- Rated Operating Distance
- 0 ... 2.43 mm
- Operating Voltage
- PNP: 10 ... 30 V DC; DC 2-wire output: 5 ... 30 V DC
- Switching Frequency
- PNP: 0 ... 1000 Hz; DC 2-wire output: 0 ... 500 Hz
- Operating Temperature Range
- -25 ... 70 °C
- Protection Rating
- IP66/IP67
- Electrical Connection
- Plug connector, cable gland
- Mounting Standard
- NAMUR/VDI VDE 3845
- Certifications
- cULus Listed, General Purpose
Application scenarios
Open/Closed Position Monitoring for Quarter-Turn Valve Actuators
Installed on quarter-turn valve actuators compliant with NAMUR/VDI VDE 3845, two independent inductive sensors separately indicate the valve open and closed positions and provide switching status feedback to the process control system.
Valve Position Feedback in High-Pressure or Corrosive Washdown Areas
Installed on quarter-turn valve actuators requiring high-pressure or corrosive washdown, providing open/closed position feedback for valves. Its tightly sealed construction and IP66/IP67 protection rating help prevent the ingress of liquids or solids, while non-contact detection reduces mechanical wear.
Rapid-Cycling Valve Monitoring in Dirty Environments
Installed on quarter-turn valve actuators operating in environments with dust, particles, or contamination and requiring repeated valve cycling, two independent sensors separately indicate the open and closed positions. The product is suitable for dirty processing environments and rapid-cycling applications, using non-contact detection to reduce mechanical wear.
Selection points
Direct Mounting to NAMUR/VDI VDE 3845 Standard
Complies with the NAMUR/VDI VDE 3845 mounting standard for direct installation on quarter-turn valve actuators, suitable for applications requiring a compact valve position feedback solution.
Dual Independent Switch Position Feedback
Equipped with two independent sensors to indicate valve open and closed positions separately; both PNP and DC 2-wire output versions provide two normally open outputs.
Sealed Non-Contact Detection for Washdown and Contaminated Environments
Uses non-contact inductive sensing with an IP66/IP67 protection rating. Product documentation specifies suitability for high-pressure washdown, corrosive washdown, and dirty processing environments, while eliminating mechanical contact wear, switch welding, arcing, and sparking issues.
PNP and DC 2-Wire Output Versions Available
Available with PNP and DC 2-wire output types, both with two normally open outputs. The PNP version operates at 10 to 30 V DC, while the DC 2-wire output version operates at 5 to 30 V DC, allowing selection based on the control system output type and voltage requirements.
Suitable for Fast-Cycling Valve Position Detection
Product documentation specifies suitability for fast-cycling applications. The PNP version has a maximum switching frequency of 1000 Hz, while the DC 2-wire output version has a maximum of 500 Hz.
Installation & maintenance notes
Install According to NAMUR/VDI VDE 3845 Standard
The 54-GS should be installed directly on a quarter-turn valve actuator compliant with NAMUR/VDI VDE 3845 to provide open and closed valve position indication.
Ensure the Sensing Target Is Within the Rated Operating Distance
During installation and positioning, ensure that the distance between the actuator sensing target and the sensor sensing face is within the rated operating distance of 0 to 2.43 mm to ensure proper valve position sensing.
Match the DC Operating Voltage to the Output Type
During electrical connection, confirm the output type and use the corresponding operating voltage: 10 to 30 V DC for the PNP type and 5 to 30 V DC for the DC 2-wire output type.
Meet Temperature Range and IP Protection Requirements
The installation environment must remain within the operating temperature range of -25 to 70 °C, and the integrity of plug connector or cable gland connections must be maintained to meet the product's IP66/IP67 protection rating.
FAQ
What is the operating principle of the 54-GS Series proximity sensors?
The 54-GS Series provides position indication for quarter-turn valves. Compact inductive sensors use two independent sensors to separately indicate open and closed states, enabling non-contact monitoring and control of valve position.
How compatible is the 54-GS Series with actuators?
Its compact design allows direct mounting to actuators compliant with VDI/VDE 3845 standards, enabling smaller actuator assemblies and reduced system costs.
What output options are available for integration with different control systems?
Multiple electrical output options are available, including PNP and DC 2-wire outputs, for easy integration into common process control environments.
Is it suitable for high-pressure washdown or corrosive washdown environments?
Featuring a tightly sealed, high-protection, impact-resistant, and corrosion-resistant design, it is suitable for harsh processing environments and rapid-cycling applications, ensuring reliable long-term operation.
What are the key installation and maintenance considerations?
Installation is straightforward. LED indicators display power, switching, and coil status. The non-contact sensor design reduces mechanical wear and is theoretically maintenance-free. Specific configurations should be confirmed according to the actual model and application conditions.
Documents
Product Brochure - Series 92/93 Pneumatic Actuators and AccessoriesProduct information · EnglishProduct Brochure - Actuators and ControlsProduct information · EnglishProduct Brochure - Valve Automation Center (VAC)Product information · EnglishIOM Manual - Series 54 Proximity SensorsManual · EnglishReference Guide - Hazardous Location ProductsProduct information · EnglishReference Guide - Intrinsic Safety Reference GuideProduct information · EnglishTechnical Sales Manual - Series 54 Proximity SensorsManual · EnglishSales Data Sheet - Series 54 Proximity SensorsProduct information · ChineseSales Data Sheet - Sensor de Proximidad Series 54Product information · EnglishSales Data Sheet - Sensores de Proximidad Serie 54Product information · English