Description, Applications, Features, Options

VS-94092B

Revised 03-03

Shock and Vibration Control Switch Catalog Section 20

(00-02-0077)

VS94 Model

■NEMA 4X/IP66 Enclosure (CSA Types 4 & 12)

■Protects Your Equipment from Excessive Shock or Vibration

■Fine Adjustment to Precisely Select the Degree of Sensitivity

■Reset from a Remote Location (Optional)

■Time Delay to Override Trip Operation at Start-up (Optional)

■Space Heater to Prevent Moisture Condensation Inside the Unit (Optional)

Description

VS94 Series is an electro-mechanical device designed to protect equipment from damag- ing shock or vibration. This sensitive mech- anism can detect excessive shock or vibra- tion and shutdown the equipment before fur- ther damage occurs. A set of contacts is held in a latched position through a magnetic latch mechanism. As the level of shock or vibration increases an inertia mass exerts force against the latch arm and forces it away from the magnetic latch causing the latch arm to separate and to operate the con- tacts. Sensitivity is obtained by adjusting the amount of air gap between the magnet and latch arm plate.

The VS94 Series is housed in a NEMA 4/4X glass filled polyester enclosure and has a base mount. It is for applications in non-haz- ardous locations.

VS94 models are rated up to 480 VAC. (See the How to Order section on back page for models and options available.)

Applications

Applications for the VS94 include all sta- tionary types of machinery or equipment where excessive shock/vibration can be damaging or poses a threat to normal opera- tions such as in:

■Cooling fans

■Engines

■Pump jacks

■Compressors

■Pumps

■Rotating and Reciprocating Machinery

Features

■Electromechanical Design

■Detects Shock or Vibration in Three Planes of Motion

■NEMA 4/4X (CSA types 4 and 12) Weather-proof Enclosure

■Reliable Magnetic Latch Feature

■Micro Fine, Easy-to-Adjust Sensitivity Adjustment

■Manual Reset (Standard)

■Remote Reset (Optional)

■Adjustable Start-up Time Delay (Optional)

■Space Heater Circuit to Prevent Housing Moisture Condensation (Optional)

■Two (2) versatile SPDT snap-switches rated up to 480 VAC.

Options

Remote Reset

This option of the VS94 includes a built-in electric solenoid which allows reset of tripped unit from a remote location. Available for 115 VAC or 24 VDC.

Time Delay

Overrides trip operation on start-up. The time delay option is field-adjustable from 5 seconds up to 6-1/2 minutes with an easy-to-adjust 20-turn potentiometer. Available for 115 VAC or 24 VDC.

Space Heater

This optional circuit prevents moisture con- densation inside the VS94 housing.

VS94 specifications

The Murphy VS94 is a versatile and robust device designed for advanced measurement and monitoring applications in various industrial settings. Renowned for its reliability and user-friendly interface, the VS94 has become a go-to solution for professionals seeking accurate data collection and analysis.

One of the standout features of the Murphy VS94 is its comprehensive range of measurement capabilities. The device supports multiple sensor inputs, allowing it to monitor various parameters such as temperature, pressure, flow, and level. This flexibility makes it suitable for applications in sectors like oil and gas, water treatment, and manufacturing.

In terms of technologies, the Murphy VS94 integrates cutting-edge digital signal processing (DSP) technologies, which enhance its measurement accuracy and response times. The use of DSP allows for real-time data processing, meaning users can access live data and make informed decisions quickly. The device also employs advanced calibration techniques to ensure high precision, minimizing the need for frequent recalibrations.

Another significant characteristic of the VS94 is its intuitive user interface. The device features a large, easy-to-read display that presents data clearly and concisely. Users can easily navigate through various options and settings using a simple menu system, making it user-friendly even for those with limited technical expertise.

Durability is another key attribute of the Murphy VS94. Built with industrial-grade materials, the device is designed to withstand harsh environmental conditions, including extreme temperatures, vibrations, and moisture. This rugged construction ensures long-term reliability in challenging settings, reducing downtime and maintenance costs.

Connectivity is also a strong point for the VS94. The device supports various communication protocols, including Modbus, Ethernet, and RS-485, allowing seamless integration with other industrial control systems and facilitating data exchange for centralized monitoring.

Additionally, the VS94 incorporates advanced data logging capabilities, enabling users to record historical data over time. This function is invaluable for trend analysis and the identification of potential issues before they become critical.

In summary, the Murphy VS94 is a highly capable measurement and monitoring device that combines versatility, precision, and durability. Its advanced technologies and user-friendly design cater to the needs of various industries, making it an essential tool for professionals looking to enhance their operational efficiency.