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Frequently Asked Questions
Why indicate the temperature at all?
Because cleaning is specified as a number.
Regimes state a water temperature.
And audits ask which one was used.
Without a gauge nobody actually knows.
It becomes a fact somebody can record.
What is wrong with setting the valve once?
The supply does not stay the same.
Incoming hot temperature varies.
So does pressure and demand elsewhere.
A setting made months ago has drifted.
The gauge shows what is true now.
How does it help with scalding?
It shows the number before you open up.
These deliver volume at pressure.
Hot enough to sanitise is hot enough to burn.
And a stream cannot be judged in the air.
A limit stop is often specified with it.
Where should the gauge be reading?
In the mixed outlet, after the valve.
That is what leaves the hose.
A gauge on the incoming supply is not.
It tells you about the boiler instead.
Check the take-off point before ordering.
Does the range matter?
Yes, and it is easy to get wrong.
A gauge working at one end of its scale.
Is hard to read where it counts.
Choose a range centred on working temperature.
Not one that merely covers it.
Dial or digital?
Dial is robust and needs no power.
Digital reads more precisely.
And can often be logged.
Washdown areas are hard on electronics.
Match the choice to the environment.
How often should the gauge be checked?
Regularly - thermometers drift.
They also get knocked and painted over.
A gauge nobody trusts is not used.
Put it on the maintenance schedule.
Check it against a known reference.