Author name: denizen robo

Basics of Infrared Gas Analyser

Principles of Infrared Analysis:Infrared (IR) absorption (or reflection for solids) is a technique that can be used successfully for continuous chemical analysis of a process. The IR region of the electromagnetic spectrum is generally considered to cover wavelengths from 0.8 to 1000µ m. These limits, expressed in frequency terms (cm-1, wave numbers or the number …

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Thermal Conductivity Gas Measurement

Thermal Conductivity Gas Detectors  All gases possess varying degrees of ability to conduct heat.  In order to have a means of comparing the gases’ abilities, a coefficient has been assigned to each gas according to its capacity to retain heat.  These coefficients and a controlled environment provide a way to determine the amount of a …

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Tool to calculate Span and Input/Output relation of an Instrument Transmitter Using LRV and URVURV

Instrument Transmitter Span and Input/Output relation Calculator This tool is used to calculate the Input and output relation from LRV and URV. How to use this tool? You need the following information to calculate the Span and Input/Output relation. LRV – Low Range Value. URV – Upper Range Value. What is LRV? LRV stands for Low …

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Radiation Pyrometer – Temperature Measurement

What is Infrared ? Infrared (IR)  portion  of  the  spectrum  spans  Wavelengths between  0. 7  t  1000  microns.  Based on  the principle  that  all objects  warmer than  absolute zero  (  0 ° K)  emit  energy  some where  in  that range. Infrared  thermometers  are  able  to  determine an  object’s  temperature  without  touching  it  by measuring  the …

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Vibration Measurement – Accelerometer

AccelerometerAccelerometers are a piezo-electronic (crystal) device. A pre- loaded crystal is charged with current and as the crystal is compressed or de-compressed by vibration an output proportional to g’s (gravity) is provided.  A “g” is equal to 9.80 meters/second2 or one (1) standard earth gravity. Accelerometers are normally used for high-frequency bearing cap vibration readings (Case/Bearing …

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Introduction To Vibration Measurement

Measurement Type Only measurements of the same type can be compared. Bearing Cap or Case Vibration cannot be directly compared to Shaft Relative or Shaft Absolute and visa versa.1). Case Absolute Case or Bearing Cap Absolute is the measurement of the Case or Bearings Caps (Location of Transducer) motion relative to free space (or absolute motion). …

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Dissolved Oxygen Measurement

Dissolved Oxygen Measurement One of the most important measurements in the determination of the health of a body of water is its dissolved oxygen content. The quantity of dissolved oxygen in water is normally expressed in parts per million (ppm) by weight and is due to the solubility of oxygen from the atmosphere around us. The atmosphere …

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