5485C Velocity Sensor Metrix

OVERVIEW

The Metrix 5485C is a moving-coil velocity transducer, designed for continuous use in elevated temperatures up to 375°C. A zero friction coil suspension provides accurate, repeatable vibration measurements over a wide range of amplitude and frequency and is built to withstand the high-g environments and cross-axis vibrations typical of gas turbines. The coil bobbin is suspended by two non-twisting, circular spider springs that provide a clean frequency response. Purely viscous electromagnetic damping is employed to eliminate friction-prone air damping and improving detection of small vibration amplitudes at low frequencies.

The sensor is available in two configurations: with integral ar mored cable or removable armored cable via a 2-pin MIL-style threaded connector. The case is constructed of stainless steel and its robust internals are hermetically sealed to ensure durability in the most hostile environments. The product is approved for use in Zone 2 / Div 2 hazardous areas without use of intrinsic safety barriers. It is also approved for use in Zone 0/1 and Div. 1 areas with use of an appropriate intrinsic safety barrier.

FEATURES

• Native velocity output – handles impulsive signals   better than integrated accelerometers 

 • Designed for elevated temperatures up to 375°C 

 • Self-generating, no power required 

 • Stainless steel housing 

 • Eliminates friction-prone air damping 

 • Analog performance delivers excellent resolution 

 • Approved for use in hazardous areas 

 • Available with integral or removable cable

APPLICATIONS

• Gas Turbines 

 • Furnace Fans 

 • Machines with continuous or intermittent surface   temperatures  above 120°C

Notes: 

 1. Intrinsically safe when installed with appropriate intrinsic safety barrier per Metrix drawing 7623. 

 2. Non-incendive when installed per Metrix drawing 8096. 

 3. Temperature Classification for the 5485C varies as a function of the ambient temperature. Essentially, the 5485C’s surface temperature will not rise more than 40°C above its ambient surroundings, up to its rated maximum operating temperature of 375°C. See table below

SAFETY INTEGRITY LEVEL

SIL is a method or measurement unit to determine the reliability of electrical, electronic and programmable systems. The purpose of the SIL certification is to measure safety system performance and the likelihood of failure. Achieving SIL certification, based on the IEC61508 Functional Safety Standard, signifies that the product has been thoroughly assessed and is a reliable electronic device ready to use across a wide range of industries. Metrix products have been thoroughly evaluated by an independent third party agency on the basis of IEC61508 Functional Safety standards to obtain SIL certification.