When the temperature rises, the liquid expands and pushes the mercury up the Maximum column this also pushes the mercury down in the Minimum column. When the temperature falls, the liquid contracts and pulls the mercury up the Minimum column which also causes the mercury to fall in the Maximum column.
What values can be obtained from min max thermometer?
The values can be obtained from the min/max thermometer is : The minimum, maximum, and current temperature.
What is the Max and Min thermometer called?
The highest temperature reached during a day is called the maximum temperature and the lowest temperature during the day is called the minimum temperature. The maximum and minimum temperatures reached during a whole day are recorded automatically by a special thermometer called Maximum-and-Minimum thermometer. 1) The maximum temperature of the day generally occurs in the afternoon. 2) The minimum temperature of the day generally occurs in the early morning.
What does maximum and minimum thermometer mean?
A maximum-minimum thermometer works by registering the maximum and minimum temperatures over a certain time period by using two scales set in liquid mercury. Two bulbs filled with alcohol or oil regulate the movement of the mercury. Maximum-minimum thermometers are typically U-shaped parallel tubes of glass.
What is minimum and maximum thermometer?
The maximum-minimum thermometer consists of a U-shaped glass tube filled with alcohol on both ends of the tube. As the alcohol expands in response to temperature changes, the metal index on both sides of the thermometer record the maximum and minimum temperatures. The lowest point of each metal index indicates the temperature.
What is a max min thermometer?
As well as displaying the current temperature, a max min thermometer records high and low temperature fluctuation over a chosen period. This can be useful for a variety of applications.
What is a thermometer with an expansion chamber?
Basically one long glass thermometer with an expansion chamber like the laboratory type, but bent into a ‘U’ shape. This type can be easily reset when required. Push button and magnet reset are the options for resetting.
Can a wall thermometer be read from a distance?
No more squinting or struggling to read your standard wall thermometer! This Digital Max Min Thermometer has a large LCD Display so it can be read from a distance without trouble.
Can a digital max min thermometer be used outdoors?
Our digital max min thermometer can still be used outdoors providing they have some form of shelter from driving rain etc
What is a maximum minimum thermometer?
The maximum-minimum thermometer consists of a U-shaped glass tube filled with alcohol on both ends of the tube. As the alcohol expands in response to temperature changes, the metal index on both sides of the thermometer record the maximum and minimum temperatures.
How to measure temperature?
* Measuring Temperature ~ Maximum & Minimum Thermometer 1 Temperature refers to the degree of hotness and coldness. 2 It is measured using the maximum & minimum thermometer. 3 The unit of measurement is usually in degree celsius/centigrade.
What is the unit of measurement for temperature?
Temperature refers to the degree of hotness and coldness. It is measured using the maximum & minimum thermometer. The unit of measurement is usually in degree celsius/centigrade. The maximum and minimum thermometer is often placed in a Stevenson Screen where it is kept out of direct sunlight.
What is the temperature of a MA-161 thermometer?
MA-161 is a traditional Spirit-filled thermometer that displays temperatures ranging from -40°—120°F (-40—50°C). It has a 1° division.
What does the reset button on a thermometer mean?
The reset button makes it easy to start a new temperature measurement.
Can you ship a mercury instrument to Gilson?
Regulations are constantly changing and Gilson may not be permitted to ship these devices to you. These items cannot be exported.
What is a six's maximum and minimum thermometer?
six's maximum and minimum thermometer is a registering thermometer which can record the maximum and minimum temperatures reached over a period of time, for example 24 hours. It is used to record the extremes of temperature at a location, for instance in meteorology and horticulture.
What does a thermometer indicate?
The thermometer indicates the current temperature, and the highest and lowest temperatures since last reset.
What does it mean when the temperature is the same on both scales?
The thermometer shows a reading at the top of the mercury section on both the maximum and minimum scales; this shows the current temperature and should be the same on both scales. If the two readings are not the same, then the instrument scales are not correctly positioned or the instrument is damaged.
How often does a mercury thermometer reset?
Typically the thermometer is reset every 24 hours to measure the diurnal temperature variation, the positions of the ends of the markers nearest to the mercury are examined. ...
How does mercury scale work?
If the temperature rises, the maximum scale marker will be pushed. If it falls, the moving mercury will push the minimum scale marker. As the temperature varies, the markers will remain in their positions unless the temperature becomes higher (for maximum) or lower (for minimum) than already recorded, in which case the relevant marker is pushed further. The markers thus record the furthest point reached by the mercury in each arm of the tube, and thereby the highest and lowest temperatures since the last reset. Typically the thermometer is reset every 24 hours to measure the diurnal temperature variation, the positions of the ends of the markers nearest to the mercury are examined. Their positions on the maximum and minimum scales show the highest and lowest temperatures encountered since the last reset.
How to reset mercury thermometer?
Before a new maximum or minimum reading can be taken, the thermometer must be reset by moving the markers to the top of the mercury, usually by hand using a small magnet to slide them along the tube. Any change in temperature after that will push one of the markers along with it. (If the markers are not reset, they will register maxima and minima only if they exceed the values already encountered.)
How are maximum and minimum readings recorded?
The maximum and minimum readings are recorded by two small steel markers which are sprung into the capillary tube so that they can slide, but only if a force is applied to them, either by being pushed by the mercury or under the influence of an external magnet .
