ˮ��I(y��)��x��ɰl(f��)չڅ�ݺ͑�(y��ng)��Mչ

��r�g��2008-12-23 11:00 ��Դ�� : ��x��1351

һ�� l(f��)չڅ��

1,�� trancduccer��Ķ��(sh��)�y��

��z�yԪ��Ԫ��sensor��,��߀��ܸ��׃��ɴ��,��ɺ��̵ęz�yϵ�y(t��ng),��p�كx�픵(sh��)��B�ӹܾ��M��,��̹ܵ��_�׵Ĝp�ٽ��͝��й©��,��

a. ��W��|(zh��)��Ӌ

b. 늴��Ӌ

�ǝM��늴��Ӌ�ڜy��ƽ��ٵ�ͬ�r߀��횜y��܃�(n��i)Һ�w�߶ȡ��ÃɄ��@�M�քe��ͷ��򴮽�,��a(ch��n)��ɷN��ͬ�ň��Ⱥʹň��ֲ��y�õ��̖늄�,��늄�֮�g�ı�ֵ�cҺλ�߶��һ��ĺ��(sh��)�P(gu��n)ϵ��

c. �u��Ӌ

�u��Ӌ��u�l(f��)��w��x��u�l��f��v��f= k1 v,��k1��ϵ��(sh��)��,��ͬ�r��cρv2��ȵ��F��F=k2ρv2��ρ��w�ܶ�,��k2��ϵ��(sh��)��,��f��F��ڳ��ͨ��eA,��|(zh��)��qm,��

qm=��F/f��A=��k2ρv2/k1v��A=kρvA

ʽ�� k——�x��ϵ��(sh��)k=k2/k2,��

d. ��Ӌ

��|(zh��)��Ӌԇ�D�ڂ��r�g��w�e��Ӌ�Ļ��A(ch��)�ϣ��ó��y�õڶ��Һ�w�迹��ܶ�,��|(zh��)��,��

2,��õڶ��z�yԪ��ĵڶ��M�Ϝy��|(zh��)��

a. ��W��|(zh��)��Ӌ��ò׃��y��ճ��

b. �u��Ӌ��ò׃��y��|(zh��)��

c. ��w�w�e��Ӌ��(n��i)�b��/�ضȂ��Ԫ��y��|(zh��)��

d. 늴��Ӌ��(n��i)�b�ضșz�yԪ��w�e�ض�Ӱ�

�ձ�ɽ�乫˾��Ј��늴��Ӌ,��늘O��(n��i)�bpt��ضșz�y��Խ�Q�@��},��

3,��ʽ�x��Ĳ�l(f��)��w�Ͳ׃��׃��һ�w��

��׃��ֱ��c��ȹ�(ji��)��b�û��ٹ��b��һ��ʡ��ڬF(xi��n)��ܾ��,��ƄӑB(t��i)��,��p�پS�o��͹��ʣ��ͳ��M�ú��\��M��,��(j��)�ձ��1996~1997��g�½��ļҹ��S��{(di��o)��,��ý�400�_�ʽ��x��У�һ�w��ֱ�Ӱ��b�̓x��ռ��֮һ,��

4,��_�l(f��)�ռ��̓x��

�m�Ƚ��͜y��_�ȵ��ܣ�ȡ��ԭ��ͨ�ù��ܸĞ��x��Ժ��x��M��,��O(sh��)Ӌ��^խ��(y��ng)�÷��ăx��,��Ķ��̓r��U��Ñ��档

a. ��W��|(zh��)��Ӌ�O(sh��)Ӌ�ռ��

��W��|(zh��)��;��_�ȣ��`��±0.2%��ҽ��͵�±0.5%��,��ܜp��,��H�ռ��̓x��

b. 늴��Ӌ��̹��I(y��)�D(zhu��n)��ס��I(l��ng)��

��늴��Ӌ�y��_�ȵ��,��`�λ��±2%,��O(sh��)Ӌ�ɾ��ˮ��c��늴�ˮ��ձ��@�늴�ʽˮ��Ѽ{��ձ�ˮ��(bi��o)��(zh��n),��

c. ��ȼ?x��)�?/p>

��Ӌ��Ȼ��r��ĳ��Ӌ��γ�Ҏ(gu��)ģ��a(ch��n),��ƽ��r��s��̹��I(y��)�ó��Ӌƽ��r��1/30��

��,�� (y��ng)��Mչ

��x�푪(y��ng)��ܵ��Ƶ�ĳһ�I(l��ng)��,��ڼ��g(sh��)��ͻ�ƺ��_�l(f��)��m��(y��ng)�ĸ��M�̓x��,��ʹ��ԓ�I(l��ng)��^��l(f��)չ,��ӑՓ�׷N��x�푪(y��ng)��I(l��ng)��Mչ��

1,��Ӌ

��곬��Ӌ��(y��ng)��ښ��w��,��潻�ӣ�custody transfer,��QCT��ؔ�Q(m��o)��㡢��סլ��Ȼ��MӋ��I(l��ng)��^��Mչ,��

a. ��w��(y��ng)��

��(d��ng)ǰ��Դ�_�l(f��),��Ȼ��ʯ�Ͱl(f��)չ�죬��M��^ȥ�l(f��)չ��Ě��w��Ӌ�l(f��)չ,��˹�Ӌ��I(y��)�ó��Ӌ,��(d��ng)ǰ��н�15%��ښ��w��

��߀Ҋ��3��S��Ј��Ƴ��(y��ng)��ĳ��Ӌ,��һ��̖��h(yu��n)�x��ĳ��Q��,��ɜy��_(d��)480��^��

b. �M�냦�潻�Ӻ�ؔ�Q(m��o)��㑪(y��ng)��I(l��ng)��

��Ӌ��ö��y��4~8��g(sh��)�Ͷ̹��Y(ji��)��(g��u)�O(sh��)Ӌ,��У��(zh��n),��y��_�ȴ��ߣ�Һ�w�Ãx��ȵȼ��и��_(d��)0.15��,��w�Ãx��ձ��0.5��,��Ȼ��л�Ӳ��ăx��

1999�걱��M��߉��Ȼ��ݔ�͹ܾ��b�ó��Ӌ,��cԭ�b�еĿװ���Ӌ��,��@�F(xi��n)��䃞(y��u)Խ��ʹ��ܣ��õ��J(r��n)��,��

c. �M��סլ��Ȼ��Ӌ��(y��ng)��I(l��ng)��

90��ڇ��ⳬ��ȼ?x��)��_(d��)��ȡ��(y��ng)��150��Ĥʽú��Ҏ(gu��)ģ,��˹�Ӌ��緶��N��ѽӽ�40�f�_/�ꡣ

2,��늴��Ӌ

a. �ǝM��늴��Ӌ

��y(t��ng)늴��Ӌֻ�ܜy��M��Һ�w��,��ǝM��늴��Ӌ��(y��ng)��ھ��ɱ��Ȼ��ˮ�ŷ��I(l��ng)�򣬲��ԓ�I(l��ng)��Ĝy��_��,��y(t��ng)�ǝM��`��±��3~5��%FS��͵�±��1~2��%FS,��

b. �y��c��(d��o)�ʵ�Һ�w

�F(xi��n)�ڿɜy��Ȃ��y(t��ng)늴��Ӌ늌�(d��o)��ֵ��2~3��(sh��)��Һ�w��ǰ��ܜy��ĸ��,��Ҷ��,��֮�⣬��x��׺��ڝ{Һ��,��Ҳ��a(ch��n)��늘O��Ч��(y��ng)�γɵ��,��r��(n��i)��渲�w��֬�ȷǌ�(d��o)늌ӻ�Y(ji��)��^��Ҳ��Ӱ표y��

c. �͹��ĺͶ��늴��Ӌ��^��l(f��)չ

��Ʋ��Ӽ��Ż�·,��H��4mADC��ṩ�x��蹦��,��ͨ��H��(sh��)ʮ��ߡ��͹��늴��Ӌʹ�п��ܲ��ø�늳ػ�̫�늳�,��،�늴��Ӌ�b��ڟo��늹�늵Ĉ��,��

d. ��S��늴��Ӌ�Ͷ��y��c��ʽ늴��Ӌ

��ڴ��w�ⲿ�Ĵ��늴ź��كx�ǲ��ʽ늴��Ӌ��r��,��ʽ늴��Ӌ�ڴ��͹ܵ��Ѕs��^��l(f��)չ��Ҳ��,��Q��늴��Ӌ��electromagnetic current meter��,��ںӵ��ˮ��ԇ�?z��i)��Ͳ��HҪ�y��߀Ҫ֪��ٷ��򡣶��S늴��ӛ�ַQ��Ӌ,��ʹ늴��x��M��ˮ��ԇ򞑪(y��ng)��I(l��ng)��,��

��ʽ늴��Ӌ߀��Մ��ٹܵ��O(sh��)Ӌ˼·��ڲ��U��ö��늴��ٜy��Ԫ,��ߜy��,��ʹ��ʽ늴��Ӌ�ڴ�ܽ�(j��ng)��(y��ng)��̎��λ,��

3,��ʽ�|(zh��)��Ӌ

��ʽ�|(zh��)��Ӌ�^ȥ��Ҫ�ǟ�ֲ�ʽ��(y��ng)��ښ��wС��y��,��^��(y��ng)��ڰ댧(d��o)�w��I(y��),��̎��t��x��Ț�,��,��y��Ϳ��Լ��y�T��^��Мy��й©��ȡ��ɢЧ��(y��ng)��ʽ�Ͳ��ʽ��ʽ��Ӌ��(y��ng)��c�h(hu��n)��o��̹��I(y��)��͹ܵ��l(f��)չѸ��,��ֶ��ж�M�z�yԪ��M�ɵęz�y�U,��^��Բ��뷽ʽ��(y��ng)��HVAC��ů��ͨ�L(f��ng)��{(di��o)��̴��͹ܵ��߀��(y��ng)��偠t��ܵ��M�L(f��ng)��͟��Ś��O(ji��n)�ySO2��NOX�ŷſ��,��

΢СҺ�w�|(zh��)��ʽ��Ӌ�mȻ��20��vʷ,��ڹ��I(y��)�ϑ�(y��ng)��ֱ��^��l(f��)չ��F(xi��n)��Ў׼��S��a(ch��n)��N��̖��ֲ�ʽ��ʽ��ӋͶ��Ј�,��(d��ng)ǰ��Ҫ��(y��ng)��ڻ��W(xu��),��ʯ��ʳƷ��̹��I(y��)��b��,��磺ˎҺ��ϵ�y(t��ng)�ж��ȿ��,��Һ��ע��^��Һ��y��Ϳ��ơ�

����D(zhu��n)�d��ǳ��ڂ��f��Ϣ֮Ŀ��,��Ё�Դ��(bi��o)ע�e�`��ַ��ĺϷ��(qu��n)��,��Ո��߳֙�(qu��n)��C��c��W(w��ng)(li��n)ϵ��҂��r��,��h��,��x�x��