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Analog Ohmmeter is a magnet device. Small coils are wound against the base of a needle. Magnets surround these coils. A voltage is applied across your device to determine the current flow of the resistive device. The more current that passes through the device under test the more magnetic field that is produced. The stronger the magnetic field the further the needle will move. The further this needle moves the lower the resistance.
The ohmmeter can pick up external magnetism from various sources. Because of the small voltages applied this movement is very sensitive to these stray fields. The adjustment compensates for these errors. The ohm meter has its own internal battery supply. As the battery voltage drops the adjustment is used to compensate to keep the needle on zero, circuit open. When the needle can not be adjusted due to low battery voltage it is time to put in a fresh battery.
Wiki User
∙ 14y ago
Wiki User
∙ 10y agoThe pH meter needs to be calibrated before each use because over time it will lose calibration and it needs to be accurate.
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What is the best method to use to determine the pH of a solution?
Using a calibrated pH-meter with correction for temperature and slope.
How often are thermometers supposed to be calibrated?
Manufacturers recommend calibration intervals. Follow their recommendation. In practical terms, recalibration may be required sooner if the instrument is heavily used, used in many and diverse locations regularly or if it sustains damage. Knowledgeable users know when unusual results occur and get their instrument repaired and/or calibrated. There is another process that helps ensure accurate results and reduces cost and loss of use - compare your meter's performance with that of a recently calibrated unit in a side-by-side test. This does not re-certify a meter but it does reduce the likelihood of using an out-of-spec meter and having to re-survey a site.
How do you measure 6.9 quarts?
Use a calibrated flask.
Would you use a meter stick to measure a chalk board?
Duha yes you would use a meter stik.
How often should backfire flame arrestors be inspected?
before use
What is the best method to use to determine the pH of a solution?
Using a calibrated pH-meter with correction for temperature and slope.
What are the errors in the use of thermometer?
A thermometer must be calibrated before use to avoid false readings.
Did Obama use the word calibrated correctly in his statement I should have calibrated my words better?
"Calibrate" typically refers to adjusting machinery.
Why is it necessary to calibrate a thermometer and volumetric?
In order to get a more precise and accurate reading.
How do you use the word Calibrated in a sentence?
The altimeters have to be proper calibrated to provide the correct data.
How do you extend the range of an ac volt meter?
Through the use of a 'multiplier', i.e. a carefully-calibrated resistor connected in series with (in the case of an analogue instrument) the instrument's operating coil.
How increase the range of ammeter and volt meter?
Through the use of a 'multiplier', i.e. a carefully-calibrated resistor connected in series with (in the case of an analogue instrument) the instrument's operating coil.
What should you set the voltage to before use at 220?
Are you referring to a meter?.... if so, set it to the closest higher voltage on the meter (usually 600VAC but sometimes 300VAC depending on the brand and model)
What would you use the meter measurement for?
You should use meter only for length, In metric a... Meter = Length Gram = Weight Liter = Volume
How often are thermometers supposed to be calibrated?
Manufacturers recommend calibration intervals. Follow their recommendation. In practical terms, recalibration may be required sooner if the instrument is heavily used, used in many and diverse locations regularly or if it sustains damage. Knowledgeable users know when unusual results occur and get their instrument repaired and/or calibrated. There is another process that helps ensure accurate results and reduces cost and loss of use - compare your meter's performance with that of a recently calibrated unit in a side-by-side test. This does not re-certify a meter but it does reduce the likelihood of using an out-of-spec meter and having to re-survey a site.
How do you use caliberated in a sentence?
Do you mean calibrated? The motorist calibrated the amount of fuel he would use if he travelled 130km at 90km per hour.
How do you measure 6.9 quarts?
Use a calibrated flask.
