22:
188:
Gas at a filling station is stored underground and is therefore at a constant temperature. The outside temperature has no bearing on this constant ground temperature and therefore the pumped fuel will always be at that temperature and needs not be corrected to 15 degrees but measured at the ground
149:
of both gases and liquids depends on the pressure and temperature of the fluid. Thus volumes measured in cold conditions or in pressurised conditions will be lower than the same mass of fluid at warmer or depressurised conditions. This fact gives rise to the necessity of choosing a benchmark
200:
Legal regulations usually require that sales to end customers be compensated to the legally defined base conditions. Where regulations do not require the use of a specific set of base conditions, contractual partners may be free to choose their own base conditions.
182:. One would otherwise get a larger mass of gasoline in a tank filled in cold weather (which is unfair to the business) and less when it is warm (which is unfair to the consumer).
166:
in a given gas volume depends on the pressure and temperature. This is why the pressure and temperature must be stated in order for a volume measurement to mean anything.
133:. To ensure accuracy, it is important to refer to base conditions when measuring the volume of a sample of liquid or gas. This applies to both static measurement and
241:
178:
pumps that states that the volume is corrected to 15 °C (59 °F, or 60 °F in the U.S.) means that the measured volume has been compensated for
280:
105:
162:. Doubling absolute pressure doubles the density of a gas, and doubling absolute temperature halves the density. The number of
39:
86:
43:
58:
65:
32:
192:
Ground gets warmer and cooler with varying temperatures. You'd have to dig down pretty deep to keep it constant.
72:
319:
54:
274:
324:
299:
122:
304:
174:
Density correction is also performed on liquids under measurement. For instance, the sticker on
179:
79:
134:
284:
313:
251:
159:
130:
21:
255:
229:
158:
The density of a gas at a specific pressure can be estimated by using the
175:
163:
126:
150:
pressure and temperature in which all 'net' volumes will be expressed.
146:
204:
Base conditions are often defined jurisdictionally. For example:
15:
232:(equivalent to 98.1 kPa absolute), temperature 20 °C
276:
Electricity and Gas
Inspection Regulations, SOR/86-131
212:
Pressure 101.325 kPa absolute, temperature 15 °C
220:
Pressure 14.696 psi absolute, temperature 60 °F
46:. Unsourced material may be challenged and removed.
242:Standard conditions for temperature and pressure
8:
254:generally need the base conditions for each
106:Learn how and when to remove this message
267:
7:
278:, sec. 2, Government of Canada, 1986
44:adding citations to reliable sources
125:, consist of a specified absolute
14:
20:
31:needs additional citations for
1:
341:
239:
283:August 12, 2011, at the
141:Pressure and temperature
236:Scientific definitions
40:improve this article
300:Standard conditions
123:standard conditions
305:Flowing conditions
258:to be configured.
170:Density correction
196:Legal definitions
180:thermal expansion
116:
115:
108:
90:
55:"Base conditions"
332:
287:
272:
135:flow measurement
121:, also known as
111:
104:
100:
97:
91:
89:
48:
24:
16:
340:
339:
335:
334:
333:
331:
330:
329:
310:
309:
296:
291:
290:
285:Wayback Machine
273:
269:
264:
249:
244:
238:
226:
218:
210:
198:
190:
186:
172:
156:
143:
119:Base conditions
112:
101:
95:
92:
49:
47:
37:
25:
12:
11:
5:
338:
336:
328:
327:
322:
320:Fluid dynamics
312:
311:
308:
307:
302:
295:
292:
289:
288:
266:
265:
263:
260:
252:Flow computers
248:
247:Flow computers
245:
240:Main article:
237:
234:
225:
222:
217:
214:
209:
206:
197:
194:
187:
184:
171:
168:
155:
152:
142:
139:
114:
113:
28:
26:
19:
13:
10:
9:
6:
4:
3:
2:
337:
326:
323:
321:
318:
317:
315:
306:
303:
301:
298:
297:
293:
286:
282:
279:
277:
271:
268:
261:
259:
257:
253:
246:
243:
235:
233:
231:
223:
221:
216:United States
215:
213:
207:
205:
202:
195:
193:
189:temperature.
183:
181:
177:
169:
167:
165:
161:
160:ideal gas law
154:Ideal gas law
153:
151:
148:
140:
138:
136:
132:
128:
124:
120:
110:
107:
99:
88:
85:
81:
78:
74:
71:
67:
64:
60:
57: –
56:
52:
51:Find sources:
45:
41:
35:
34:
29:This article
27:
23:
18:
17:
275:
270:
250:
228:Pressure 1
227:
219:
211:
203:
199:
191:
173:
157:
144:
118:
117:
102:
93:
83:
76:
69:
62:
50:
38:Please help
33:verification
30:
325:Measurement
131:temperature
314:Categories
262:References
256:flow meter
96:March 2009
66:newspapers
164:molecules
294:See also
281:Archived
176:gasoline
127:pressure
230:kgf/cm²
185:UPDATE
147:density
80:scholar
224:Mexico
208:Canada
82:
75:
68:
61:
53:
87:JSTOR
73:books
145:The
129:and
59:news
42:by
316::
137:.
109:)
103:(
98:)
94:(
84:·
77:·
70:·
63:·
36:.
Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.
