Calibration Connect Ltd

Providing Total Calibration Solutions
IANZ Accredited Laboratory No 982

Glossary

 

NZS/ISO/IEC 17025:2018 covers the "General Requirements for the Competence of Testing and Calibration Laboratories". NZS/ISO/IEC 17025:2018 assures the customer that: procedures used, and results issued, by a laboratory are technically valid; an effective quality system is in use; and staff are competent.

AC

 

Alternating Current
An electric current that reverses its direction at regularly recurring intervals.

 

The closeness of an indication or reading of equipment to the actual value of the quantity being measured. A typical accuracy statement may combine a % of reading, % of range, n * digits, etc.

 

The average or mean temperature of the surrounding air which comes in contact with the equipment and instruments under test.

 

The unit of measure (A) used to define the rate of flow of electricity (current) in a circuit (one coulomb (6.25 x 108 electronics) per second). Also know as an Amp.

 

American National Standards Institute
Coordinates the development and use of voluntary consensus standards in the United States and represents the needs and views of U.S. stakeholders in standardization forums around the globe.

 

Asia Pacific Laboratory Accreditation Cooperation
APLAC groups accreditation bodies in the Asia Pacific region responsible for accrediting calibration, testing and inspection facilities. Click APLAC to visit the Asia Pacific Laboratory Accreditation Cooperation website

 

In-service Safety Inspection and Testing of Electrical Equipment is a joint Australia and New Zealand Standard. This standard specifies in-service safety inspection and testing protocols and criteria that satisfy the OSH obligations of employers and employees, and provides a cost effective approach to safety without jepoardising the safety of personnel or involving excessive equipment downtime.

 

The frequency range between frequency points at which the signal is attenuated by 3 dB.

BMC

 

Best Measurement Capabilities
The highest level of calibration or measurement accuracy available to a customer, provided by the calibration laboratory. Also known as Calibration and Measurement Capability (CMC). Click here to view more about our CMC's.

 

A set of operations, under specified environmental conditions, that establish the relationship between measured values of the equipment under test and the corresponding values of the reference standards or materials.

CMC

 

Calibration and Measurement Capability
The highest level of calibration or measurement accuracy available to a customer, provided by the calibration laboratory. Also known as Best Measurement Capabilities (BMC). Click here to view more about our CMC's.

 

The measure of the ability of a material or solution to carry an electrical current. Unit of measure is the Siemens (S).

 

The range of values that encompases the standard uncertainty multiplied by the coverage factor. In the formula below, ± ks represents the confidence interval.

value = m ± ks

value = value of the measurement
m = measurement (or mean of measurements)
k = coverage factor
s = standard uncertainty

 

A numerical factor k is used as a multiplier of the combined standard uncertainty in order to obtain an expanded uncertainty. In general, the value of the coverage factor k is chosen on the basis of the desired level of confidence to be associated with a measurement. With a normal distribution, k=2 giving a level of confidence of approximately 95 % that the measured value m is within ± ks of the value.

value = m ± ks

value = value of the measurement
m = measurement (or mean of measurements)
k = coverage factor
s = standard uncertainty

 

The rate of flow of electricity. The unit of measure is the ampere (A).

DC

 

Direct Current
An electric current flowing in one direction only and constant in value.

 

The decibel (dB) is a logarithmic unit used to describe a ratio of power, voltage, etc.

 

A measure of the display span of a meter. By convention, a full digit can assume any value from 0 through 9, a 1⁄2-digit will display a 1 and overload at 2, a 3⁄4-digit will display digits up to 3 and overload at 4, etc. For example, a meter with a display span of ±399 counts is said to be a "2 and 3⁄4 digit" meter.

DUT

 

Device Under Test
The item of equipment being calibrated. Also know as "UUT" (Unit Under Test).

ESD

 

ElectroStatic Discharge
The rapid, spontaneous transfer of electrostatic charge induced by a high electrostatic field.
Electrostatic Sensitive Device
Any component which is prone to damage by static electricity charges which build up on people, tools, packaging, etc.

 

The quantity defining an interval about the measurement m, that may be expected to encompass a large percentage of the distribution of values (typically 95% or greater) that could reasonably be attributed to the measured value. In the formula below, ks represents the expanded uncertainty.

value = m ± ks

value = value of the measurement
m = measurement (or mean of measurements)
k = coverage factor
s = standard uncertainty

(Estimated Uncertainty = Expanded Uncertainty)

 

The quantity defining an interval about the measurement m, that may be expected to encompass a large percentage of the distribution of values (typically 95% or greater) that could reasonably be attributed to the measured value. In the formula below, ks represents the expanded uncertainty.

value = m ± ks

value = value of the measurement
m = measurement (or mean of measurements)
k = coverage factor
s = standard uncertainty

(Expanded Uncertainty = Estimated Uncertainty)

 

The number of cycles over a specified time period over which an event occurs. Unit of measure is the Hertz (Hz).

 

Units (Hz) in which frequency is expressed.

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