V-lines - stem length and immersion

V-Line Thermometers are supplied with different stem lengths, to accommodate different pipe sizes. The glass bulb is encased in a pocket (thermowell) and the pocket is then screwed into the pipework. Should the user need to remove the glass thermometer, then they can do this without turning off the machine or system as they simply unscrew the v-line case from the pocket.
Posted 17th June 2021

V-lines - what are they and where are they used?

V-Line thermometers (industrial thermometers) consist of a glass capillary thermometer which is encased in either an aluminium or polypropelene housing, with the sensor bulb protected by a pocket (thermowell). The housing can be supplied in three orientations, to enable the glass column to remain upright for easy readibility regardless of how the thermometer is fitted.
Posted 17th June 2021

Pressure gauge - how to select

To effectively select a pressure gauge, you need to consider the following:
Posted 16th June 2021

Pressure gauge - what is a snubber?

A snubber (also called a check valve) protects a pressure gauge against pressure spikes and sharp fluctuations. It helps to prolong the life of a gauge when used in challenging or harsh conditions. Without a snubber, a rapid change in pressure can cause internal seals within the gauge to rupture, thus allowing the liquid media under pressure to enter the gauge.
Posted 16th June 2021

Pressure gauge - syphons

High temperatures within a gauge has the potential to cause damage to the gauge or create inaccurate readings.
Posted 16th June 2021

Pressure gauge - high humidity installations

Sometimes gauges are installed in humid environments, and it is important that the correct instruments are selected for these conditions.
Posted 16th June 2021

Pressure gauge - stainless steel and different grades

There are multiple grades of stainless steel, each containing a slightly varying alloy composition and therefore presenting different physical characteristics.
Posted 16th June 2021

Pressure gauge - tell-tale pointer

A tell-tale pointer on a pressure gauge is a red pointer attached behind the black needle. Other names this is commonly known as is a tattle-tale pointer or drag pointer. It records the maximum pressure the gauge has experienced.
Posted 16th June 2021

Pressure gauge - what is a pressure gauge window

The pressure gauge window is the clear membrane that allows the user to see the dial of the gauge. Windows can be made of different materials, such as;
Posted 16th June 2021

Pressure gauge - what is WRAS approval?

The Water Regulations Advisory Scheme (WRAS) approval is an easy way to demonstrate that a material or water fitting is of suitable quality and standard.
Posted 16th June 2021

Pressure gauge - working pressure

The working pressure is the operating range of a pressure gauge. It is the amount of force being applied to the internals of the gauge under normal operating conditions.
Posted 16th June 2021

Pressure gauge - what is a bezel?

A bezel is the front outside ring of the pressure gauge and is used to connect the window to the case. There are several types of bezel available:
Posted 16th June 2021

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