AHU Monitoring

Air Handling Units

The circulation of air around a building is integral in the sufficient air conditioning, ventilating and heating of the peoples within said structure. To ensure that these processes are achieved, the usage of an AHU is a must.

In the proper care and maintenance of this unit (the Air Handling Unit) AHU monitoring is a necessary requirement. This monitoring is also a necessity to ensure that the air exuded by the machine is of the required temperature for the environment into which the unit is placed.

Materials

The AHU, that AHU monitoring is essential to maintain and upkeep, is typically comprised of a sizeable metal unit that contains either a blower or a fan. This blower and/or fan circulates steam, hot water and/or air.

For more information about AHU monitoring, including equipment, properties and uses for the AHU, click here

The entirety of the complex minutiae of the innards of the AHU, including all assembly, possess removable panels to allow engineers access. This ensures that the unit can be repaired if it is deemed unsafe or not working.

Methods

By carrying out AHU monitoring, it ensures that any problems incurred within the system is identified as quickly as is possible. This ensures that the reparations are as cost effective as possible.

One of the methods by which the process can be carried out is through the application of 4-20mA sensors to the shafts and bearings of the AHU. These vibration monitoring practises are then output to a PLC where the information can be monitored.

Predictive Maintenance

Predictive maintenance processes are wholly and entirely beneficial to the equipment which it is being utilised to repair. This is due to the maintenance being able to be planned and, therefore, ensured to be more efficient.

Some of these benefits are;

• Safer practises
• More cost effective
• Ensures longer lasting equipment

Accelerometer Vibration

Maintenance Equipment

Structures must be kept up with numerous means of maintenance to ensure that they are safe for peoples to live, work and visit. To carry out these maintenance practises upon a structure, then a process is necessary to assuage the integrity of the structure itself. One of the prime means of carrying out these processes is through vibrations monitoring.

The vibrations monitoring process requires a number of items of specialist equipment. This equipment is that of the transmitter and of the accelerometer. The accelerometer vibration unit serves to emit vibrations into the structure itself.

Predictive Maintenance

The processes of predictive maintenance are altogether integral to the safest and most efficient means of upkeep on any and all varieties of structures and buildings. It is altogether essential in order to plan any potential maintenance works to ensure that the least disruption is offered to the peoples working or living within the structure.

Other benefits to predictive maintenance include;

• Increased equipment lifetime
• Increased safety
• Fewer accidents onsite
• Optimised spare part handling
• Less impact upon the environment

Click here for more information about accelerometer vibration information

Variances

There are a range of different variants of the accelerometer vibration equipment. Each of these different variants are available for integration into different structures, dependent upon the properties of each respective structure.

Some of these different variances are;
- Flame retardant
- Oil resistant
- Braided cable, intrinsically safe
- Dual output
- Triaxial

Sensitivities

The accelerometer vibration equipment is available in a variety of sensitivities. Each of these different sensitivities are representative of the millivolts utilised by the equipment in comparison to the respective square unit of gravity (or g-unit).

Each of these different sensitivities, including 10mV/g, 30mV/g and 50mV/g, are each designed for specific integration into different structures.

100 mv/g accelerometer

Predictive Maintenance

The processes of predictive maintenance are essential in the continued maintenance of an industrial structure, to ensure that they are safe to live, work and be within. The processes of predictive maintenance involve the process of vibrations monitoring, in which vibrations are utilised to assuage the integrity of said building being tested.

Some specialist pieces of technology are required through which to carry out these processes. These items of technology are those of the transmitter and the 100 mv/g accelerometer.

For more information about the 100 mv/g accelerometer unit, including its inherent properties, uses and capabilities, click here

Accelerometer

The accelerometer is a specialist piece of equipment that is utilised primarily and purposefully in the emitting of vibrations around and throughout a structure. This is a means of assuaging the structural integrity of the property or structure into which the equipment is placed.

There are a number of different variants of the accelerometer unit and each of these possess different capabilities. These different capabilities inform as to the structure into which the unit should be placed. 

Mv/g

The mv/g amount of the unit is representative of the output voltage of the accelerometer. Mv/g is representative of the number of millivolts, divided by the gravity (or g-unit) of the area being assessed. A g-unit is comprised of 9.806,65 meters per square second.

This 100 mv/g accelerometer emits 100 millivolts per g-unit. This ensures that it is a high output accelerometer used to measure low level vibrations.

Transmitter

The 100 mv/g accelerometer is utilised in conjunction with a transmitter. The transmitter serves to transmit the vibrations information to those analysing or disseminating it.

The transmitter utilises a simplistic, two wire system. All vibrations information is input and output through these wires concurrently. If any errors occur within this system, it is easy to identify and to rectify.

4-20mA Transmitter

Vibrations Monitoring

There are a number of processes and items of equipment that are intrinsic within the successful carrying out of the predictive maintenance processes upon any structure. The prime process involved within the predictive maintenance effort is that of vibrations monitoring.

There are two items of equipment that are integral within vibrations monitoring. These are those of the accelerometer and of the 4-20mA transmitter. The former equipment reverberates vibrations around a structure, whilst the latter transmits said vibrations information to those analysing and disseminating it.

Two wire System

The 4-20mA transmitter is effective as it utilises a two wire system. Through these two wires all vibrations information is input and output from the source of the predictive maintenance process to those who are analysing said information.

This assures that any breakages that occur within the system are easy to identify and to solve, allowing the process to continue. The reparations upon the two wire system are carried out by professionals, ensuring that the wires are joined in an expert fashion.

For more information about the 4-20mA transmitter unit, its uses, its properties and its variants, click here

mA

The mA prefix of the transmitter is the representation of the voltage milliamperes that are utilised within the vibrations monitoring circuit.

These voltage milliamperes are then divided by the gravity centre (g-unit) figures provided by the accelerometer. This serves to surmise as to the integrity of a structure.

Variants

There are a number of variations of the 4-20mA transmitter, that are each designed for better implementation into different structures. This is dependent upon the properties of the structures themselves.

Some of these different transmitter units are those that utilise dual output, those that are apt to high velocities and those that are 'intrinsically safe'. These variations are advised to be researched before they are implemented into a structure, to ensure that they are as safe and as effective as is possible.