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accuracy. The degree of correctness with which a measured value agrees with the true value.
electronic accuracy. The accuracy of an instrument independent of the sensor.
sensor accuracy. The accuracy of a temperature sensor and its associated calibration or its ability to match a standard curve.
American Standard Code for Information Interchange (ASCII). A standard code used in data transmission, in which
128 numerals, letters, symbols, and special control codes are represented by a 7-bit binary number as follows:
American Wire Gage (AWG). Wiring sizes are defined as diameters in inches and millimeters as follows:
AWG
Dia. In.
Dia. mm
1
0.2893
7.348
2
0.2576
6.544
3
0.2294
5.827
4
0.2043
5.189
5
0.1819
4.621
6
0.1620
4.115
7
0.1443
3.665
8
0.1285
3.264
9
0.1144
2.906
10
0.1019
2.588
ambient temperature. The temperature of the surrounding medium, such as gas or liquid, which comes into contact with the
1
apparatus.
ampere. The constant current that, if maintained in two straight parallel conductors of infinite length, of negligible circular cross
section, and placed one meter apart in a vacuum, would produce between these conductors a force equal to 2 × 10
2
meter of length.
This is one of the base units of the SI.
ampere-turn. A MKS unit of magnetomotive force equal to the magnetomotive force around a path linking one turn of a conducting
loop carrying a current of one ampere; or 1.26 gilberts.
ampere/meter (A/m). The SI unit for magnetic field strength (H). 1 ampere/meter = 4 /1000 oersted 0.01257 oersted.
analog controller. A feedback control system where there is an unbroken path of analog processing between the feedback device
(sensor) and control actuator (heater).
analog data. Data represented in a continuous form, as contrasted with digital data having discrete values.
analog output. A voltage output from an instrument that is proportional to its input. For example, from a digital voltmeter, the output
voltage is generated by a digital-to-analog converter so it has a discrete number of voltage levels.
autotuning. In Lake Shore instruments, the Autotuning algorithm automatically determines the proper settings for Gain
(Proportional), Reset (Integral), and Rate (Derivative) by observing the time response of the system upon changes in setpoint.
B. Symbol for magnetic flux density. See Magnetic Flux Density.
bar. Unit of pressure equal to 10
Baud. A unit of signaling speed equal to the number of discrete conditions or signal events per second, or the reciprocal of the time of
the shortest signal element in a character.
bit. A contraction of the term "binary digit"; a unit of information represented by either a zero or a one.
BNC. Bayonet Nut Connector.
Glossary of Terminology
Lake Shore Model 642 Electromagnet Power Supply User's Manual
APPENDIX A
GLOSSARY OF TERMINOLOGY
AWG
Dia. In.
Dia. mm
11
0.0907
2.304
12
0.0808
2.053
13
0.0720
1.829
14
0.0641
1.628
15
0.0571
1.450
16
0.0508
1.291
17
0.0453
1.150
18
0.0403
1.024
19
0.0359
0.9116
20
0.0338
0.8118
5
pascal, or 0.98697 standard atmosphere.
2
2
AWG
Dia. In.
Dia. mm
21
0.0285
0.7230
22
0.0253
0.6438
23
0.0226
0.5733
24
0.0207
0.5106
25
0.0179
0.4547
26
0.0159
0.4049
27
0.0142
0.3606
28
0.0126
0.3211
29
0.0113
0.2859
30
0.0100
0.2546
AWG
Dia. In.
Dia. mm
31
0.0089
0.2268
32
0.0080
0.2019
33
0.00708
0.178
34
0.00630
0.152
35
0.00561
0.138
36
0.00500
0.127
37
0.00445
0.1131
38
0.00397
0.1007
39
0.00353
0.08969
40
0.00314
0.07987
–7
newton per
1
2
A-1
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