超音波流量計主要依靠待測液體的聲速來計算流量,然而,液體聲速會被兩大常見因素影響流量監測-溫度及藥品濃度。
除了管外徑、管厚度、探頭架設方式等因素外,流體狀態對超音波流量計的測量準確與否影響甚巨。因流體在不同的溫度下會有不同的聲速表現,而聲速的數值也會影響超音波流量計的流量計算。
水是目前被研究最透徹的流體,本篇LORRIC為使用者羅列出水中溫度(華氏/攝氏)與聲速(公尺/英尺)的數據對照關係,可參考以下表格並在超音波流量計裡進行設定來得到所需的數據結果。
→看「時間差式超音波流量計現場監測常見的問題。」
▼以下為水的聲速溫度對照表
溫度 |
聲速(水) |
˚C |
˚F |
m/s |
ft/s |
0 |
32 |
1,402 |
4,600 |
1 |
33.8 |
1,407 |
4.616 |
2 |
35.6 |
1,412 |
4,633 |
3 |
37.4 |
1,417 |
4,649 |
4 |
39.2 |
1,421 |
4,662 |
5 |
41 |
1,426 |
4,679 |
6 |
42.8 |
1,430 |
4,692 |
7 |
44.6 |
1,434 |
4,705 |
8 |
46.4 |
1,439 |
4,721 |
9 |
48.2 |
1,443 |
4,734 |
10 |
50 |
1,447 |
4,748 |
11 |
51.8 |
1,451 |
4,761 |
12 |
53.65 |
1,455 |
4,774 |
13 |
55.4 |
1,458 |
4,784 |
14 |
57.2 |
1,462 |
4,797 |
15 |
59 |
1,465 |
4,807 |
16 |
60.8 |
1,469 |
4,820 |
17 |
62.6 |
1.472 |
4,830 |
18 |
64.4 |
1,476 |
4,843 |
19 |
66.2 |
1,479 |
4,853 |
20 |
68 |
1,482 |
4,862 |
21 |
69.8 |
1,485 |
4.872 |
22 |
71.6 |
1,488 |
4,882 |
23 |
73.4 |
1,491 |
4,892 |
24 |
75.2 |
1,493 |
4,899 |
25 |
77 |
1,496 |
4,908 |
26 |
78.8 |
1,499 |
4,918 |
27 |
80.6 |
1,501 |
4,925 |
28 |
82.4 |
1,504 |
4,935 |
29 |
84.2 |
1,506 |
4,941 |
30 |
86 |
1,509 |
4,951 |
31 |
87.8 |
1,511 |
4,958 |
32 |
89.6 |
1,513 |
4,964 |
33 |
91.4 |
1,515 |
4,971 |
34 |
93.2 |
1,517 |
4,977 |
35 |
95 |
1,519 |
4,984 |
36 |
96.8 |
1,521 |
4,990 |
37 |
98.6 |
1,523 |
4,997 |
38 |
100.4 |
1,525 |
5,004 |
39 |
102.2 |
1,527 |
5,010 |
40 |
104 |
1,528 |
5,013 |
41 |
105.8 |
1,530 |
5,020 |
42 |
107.6 |
1,532 |
5,026 |
43 |
109.4 |
1,534 |
5,033 |
44 |
111.2 |
1,535 |
5,036 |
45 |
113 |
1,536 |
5,040 |
46 |
114.8 |
1,538 |
5,046 |
47 |
116.6 |
1,539 |
5,049 |
48 |
118.4 |
1,540 |
5,053 |
49 |
120.2 |
1,541 |
5,056 |
50 |
122 |
1,543 |
5,063 |
51 |
123.8 |
1,543 |
5,063 |
52 |
125.6 |
1,544 |
5,066 |
53 |
127.4 |
1,545 |
5,069 |
54 |
129.2 |
1,546 |
5,072 |
55 |
131 |
1,547 |
5,076 |
56 |
132.8 |
1,548 |
5,079 |
57 |
134.6 |
1,548 |
5,046 |
58 |
116.6 |
1,539 |
5,049 |
59 |
138.2 |
1,550 |
5,086 |
60 |
140 |
1,550 |
5,086 |
61 |
141.8 |
1,551 |
5,089 |
62 |
143.6 |
1,552 |
5,092 |
63 |
145.5 |
1,552 |
5,092 |
64 |
147.2 |
1,553 |
5,095 |
65 |
149 |
1,553 |
5,095 |
66 |
150.8 |
1,553 |
5,095 |
67 |
152.6 |
1,554 |
5,099 |
68 |
154.5 |
1,554 |
5,099 |
69 |
156.2 |
1,554 |
5,099 |
70 |
158 |
1,554 |
5,099 |
71 |
159.8 |
1,554 |
5,099 |
72 |
161.6 |
1,555 |
5,102 |
73 |
163.4 |
1,555 |
5,102 |
74 |
165.2 |
1,555 |
5,102 |
75 |
167 |
1,555 |
5,102 |
76 |
168.8 |
1,555 |
5,102 |
77 |
170.6 |
1,554 |
5,099 |
78 |
172.4 |
1,554 |
5,099 |
79 |
174.2 |
1,554 |
5,099 |
80 |
176 |
1,554 |
5,099 |
81 |
177.8 |
1,554 |
5,099 |
82 |
179.6 |
1,553 |
5,095 |
83 |
181.4 |
1,553 |
5.095 |
84 |
183.2 |
1,553 |
5,095 |
85 |
183 |
1,552 |
5,092 |
86 |
186.8 |
1,552 |
5,092 |
87 |
188.6 |
1,552 |
5,092 |
88 |
190.4 |
1,551 |
5,089 |
89 |
192.2 |
1,551 |
5,089 |
90 |
194 |
1,550 |
5,086 |
91 |
195 |
1,549 |
5,082 |
92 |
197.6 |
1,549 |
5,082 |
93 |
199.4 |
1,548 |
5,079 |
94 |
201.2 |
1,547 |
5,076 |
95 |
203 |
1,547 |
5,076 |
96 |
204.8 |
1,546 |
5,072 |
97 |
206.6 |
1,545 |
5,069 |
98 |
208.4 |
1,544 |
5,066 |
99 |
210.2 |
1,543 |
5,063 |
100 |
212 |
1,543 |
5,063 |
104 |
220 |
1,538 |
5,046 |
110 |
230 |
1,532 |
5,026 |
116 |
240 |
1,524 |
5,000 |
121 |
250 |
1,526 |
5,007 |
127 |
260 |
1,507 |
4,944 |
132 |
270 |
1,497 |
4,912 |
138 |
280 |
1,487 |
4,879 |
143 |
290 |
1,476 |
4,843 |
149 |
300 |
1,465 |
4,807 |
154 |
310 |
1,453 |
4,767 |
160 |
320 |
1,440 |
4,725 |
166 |
330 |
1,426 |
4,679 |
171 |
340 |
1,412 |
4,633 |
177 |
350 |
1,398 |
4,587 |
182 |
360 |
1,383 |
4,538 |
188 |
370 |
1,368 |
4,488 |
193 |
380 |
1,353 |
4,439 |
199 |
390 |
1,337 |
4,387 |
204 |
400 |
1,320 |
4,331 |
210 |
410 |
1,302 |
4,272 |
216 |
420 |
1,283 |
4,210 |
221 |
430 |
1,264 |
4,147 |
227 |
440 |
1,244 |
4,082 |
232 |
450 |
1,220 |
4,003 |
238 |
460 |
1,200 |
3,937 |
243 |
470 |
1,180 |
3,872 |
249 |
480 |
1,160 |
3,806 |
254 |
490 |
1,140 |
3,740 |
260 |
500 |
1,110 |
3,642 |
溫度 |
聲速(水) |
˚F |
˚C |
ft/s |
m/s |
32 |
0 |
4,600 |
1,402 |
34 |
1.1 |
4,618 |
1,408 |
36 |
2.2 |
4,637 |
1,413 |
38 |
3.3 |
4,653 |
1,418 |
40 |
4.4 |
4,670 |
1,423 |
42 |
5.6 |
4,686 |
1,428 |
44 |
6.7 |
4,701 |
1,433 |
46 |
7.8 |
4,717 |
1,438 |
48 |
8.9 |
4,733 |
1,442 |
50 |
10 |
4,748 |
1,447 |
52 |
11.1 |
4,762 |
1,452 |
54 |
12.2 |
4,776 |
1,456 |
56 |
13.3 |
4,788 |
1,459 |
58 |
14.4 |
4,801 |
1,463 |
60 |
15.6 |
4,814 |
1,467 |
62 |
16.7 |
4,827 |
1,471 |
64 |
17.8 |
4,840 |
1,475 |
66 |
18.9 |
4,852 |
1,479 |
68 |
20 |
4,862 |
1,482 |
70 |
21.1 |
4,873 |
1,485 |
72 |
22.2 |
4,884 |
1,489 |
74 |
23.3 |
4,894 |
1,492 |
76 |
24.4 |
4,903 |
1,494 |
79 |
25.6 |
4,914 |
1,498 |
80 |
26.7 |
4,923 |
1,500 |
82 |
27.8 |
4,933 |
1,504 |
84 |
28.9 |
4,940 |
1,506 |
86 |
30 |
4,951 |
1,509 |
88 |
31.1 |
4,959 |
1,511 |
90 |
32.2 |
4,966 |
1,514 |
92 |
33.3 |
4,973 |
1,516 |
94 |
34.4 |
4,980 |
1,518 |
96 |
35.6 |
4,987 |
1,520 |
98 |
36.7 |
4,995 |
1,522 |
100 |
37.8 |
5,002 |
1,525 |
102 |
38.9 |
5,009 |
1,527 |
104 |
40 |
5,013 |
1,528 |
106 |
41.1 |
5,021 |
1,530 |
108 |
42.2 |
5,028 |
1,532 |
110 |
43.3 |
5,034 |
1,534 |
112 |
44.4 |
5,038 |
1,536 |
114 |
45.6 |
5,043 |
1,537 |
116 |
46.7 |
5,048 |
1,539 |
118 |
47.8 |
5,052 |
1,540 |
120 |
48.9 |
5,056 |
1,541 |
122 |
50 |
5,063 |
1,543 |
124 |
51.1 |
5,063 |
1,543 |
126 |
52.2 |
5,067 |
1,544 |
128 |
53.3 |
5,070 |
1,545 |
130 |
54.4 |
5,074 |
1,546 |
132 |
55.6 |
5,078 |
1,548 |
134 |
56.7 |
5,079 |
1,548 |
136 |
57.8 |
5,082 |
1,549 |
138 |
58.9 |
5,086 |
1,550 |
140 |
60 |
5,086 |
1,550 |
142 |
61.1 |
5,089 |
1,551 |
144 |
62.2 |
5,092 |
1,552 |
146 |
63.3 |
5,093 |
1,552 |
148 |
64.4 |
5,095 |
1,553 |
150 |
65.6 |
5,095 |
1,553 |
152 |
66.7 |
5,098 |
1,554 |
154 |
67.8 |
5,099 |
1,554 |
156 |
68.9 |
5,099 |
1,554 |
158 |
70 |
5,099 |
1,554 |
160 |
71.1 |
5,099 |
1,554 |
162 |
72.2 |
5,102 |
1,555 |
164 |
73.3 |
5,102 |
1,555 |
166 |
74.4 |
5,102 |
1,555 |
168 |
75.6 |
5,102 |
1,555 |
170 |
76.7 |
5,100 |
1,554 |
172 |
77.8 |
5,099 |
1,554 |
174 |
78.9 |
5,099 |
1,554 |
176 |
80 |
5,099 |
1,554 |
178 |
81.1 |
5,099 |
1,554 |
180 |
82.2 |
5,095 |
1,553 |
182 |
83.3 |
5,092 |
1,552 |
184 |
84.4 |
5,092 |
1,552 |
186 |
85.6 |
5,092 |
1,552 |
188 |
86.7 |
5,092 |
1,552 |
190 |
87.8 |
5,090 |
1,551 |
192 |
88.9 |
5,089 |
1,551 |
194 |
90 |
5,086 |
1,550 |
196 |
91.1 |
5,082 |
1,549 |
198 |
92.2 |
5,081 |
1,549 |
200 |
93.3 |
5,078 |
1,548 |
202 |
94.4 |
5,076 |
1,547 |
204 |
95.6 |
5,074 |
1,546 |
206 |
96.7 |
5,070 |
1,545 |
208 |
97.8 |
5,067 |
1,544 |
210 |
98.9 |
5,063 |
1,543 |
212 |
100 |
5,063 |
1,543 |
214 |
101.1 |
5,059 |
1,542 |
216 |
102.2 |
5,055 |
1,541 |
218 |
103.3 |
5,050 |
1,539 |
220 |
104.4 |
5,046 |
1,538 |
222 |
105.6 |
5,042 |
1,537 |
224 |
106.7 |
5,038 |
1,536 |
226 |
107.8 |
5,034 |
1,534 |
228 |
108.9 |
5,030 |
1,553 |
230 |
110 |
5,026 |
1,532 |
232 |
111.1 |
5,021 |
1,530 |
234 |
112.2 |
5,016 |
1,529 |
236 |
113.3 |
5,010 |
1,527 |
238 |
114.4 |
5,005 |
1,526 |
240 |
115.6 |
5,000 |
1,524 |
242 |
116.7 |
5,001 |
1,524 |
244 |
117.8 |
5,003 |
1,525 |
246 |
118.9 |
5,004 |
1,525 |
248 |
120 |
5,006 |
1,526 |
250 |
121.1 |
5,007 |
1,526 |
260 |
126.7 |
4,944 |
1,507 |
270 |
132.2 |
4,912 |
1,497 |
280 |
137.8 |
4,879 |
1,487 |
290 |
143.3 |
4,843 |
1,476 |
300 |
148.9 |
4,807 |
1,465 |
310 |
154.4 |
4,767 |
1,453 |
320 |
160 |
4,725 |
1,440 |
330 |
165.6 |
4,679 |
1,426 |
340 |
171.1 |
4,633 |
1,412 |
350 |
176.7 |
4,587 |
1,398 |
360 |
182.2 |
4,538 |
1,383 |
370 |
187.8 |
4,488 |
1,368 |
380 |
193.3 |
4,439 |
1,353 |
390 |
198.9 |
4,387 |
1,337 |
400 |
204.4 |
4,331 |
1,320 |
410 |
210 |
4,272 |
1,302 |
420 |
215.6 |
4,210 |
1,283 |
430 |
221.1 |
4,147 |
1,264 |
440 |
226.7 |
4,082 |
1,244 |
450 |
232.2 |
4,003 |
1,220 |
460 |
237.8 |
3,937 |
1,200 |
470 |
243.3 |
3,872 |
1,180 |
480 |
248.9 |
3,806 |
1,160 |
490 |
254.4 |
3,740 |
1,140 |
500 |
260 |
3,642 |
1,110 |
聯絡我們
推薦您 LORRIC 的相關產品