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谱仪Helium下降速率，以往一般4天下降1 %，但最近不知为何，有时2天就下降1 %。液氮是一周补加一次。请问根据下面的一部分液氦、液氮读数，能判断液氦挥发速率正常吗？如果不正常，大致是什么原因？应该怎么做？/ X4 E$ |' \5 q" {% \9 s7 g6 j
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Fri Sep 13 04:15:00 2013 : helium level = 69 %, nitrogen level = 100 %, field = 8510.1
3 K! g6 r# M, Q5 d# ESat Sep 14 04:15:00 2013 : helium level = 68 %, nitrogen level = 96 %, field = 8497.12 {' ~( B* @& [6 f6 c
Sun Sep 15 04:15:00 2013 : helium level = 68 %, nitrogen level = 90 %, field = 8449.9
( a" g( s2 D0 U# ]% hMon Sep 16 04:15:00 2013 : helium level = 68 %, nitrogen level = 84 %, field = 8451.7! o/ q* l; Q# ~
Tue Sep 17 04:15:00 2013 : helium level = 68 %, nitrogen level = 78 %, field = 8510.9% C$ M' |, }" G& t
Wed Sep 18 04:15:00 2013 : helium level = 68 %, nitrogen level = 72 %, field = 8479.4
# I5 J1 L! ^9 C* RThu Sep 19 04:15:00 2013 : helium level = 67 %, nitrogen level = 100 %, field = 8466.3
6 [ X+ _/ ^. bFri Sep 20 04:15:00 2013 : helium level = 67 %, nitrogen level = 98 %, field = 8466.3
- z% S% ?8 n* E6 ISat Sep 21 04:15:00 2013 : helium level = 67 %, nitrogen level = 92 %, field = 8471.2
( z- J c# f5 u$ ]Sun Sep 22 04:15:00 2013 : helium level = 67 %, nitrogen level = 86 %, field = 8471.2
, e+ T1 K5 D( @% s; G3 _Mon Sep 23 04:15:00 2013 : helium level = 66 %, nitrogen level = 80 %, field = 8502.2
4 P1 n5 V4 b' c% z: }" \7 R9 iTue Sep 24 04:15:00 2013 : helium level = 66 %, nitrogen level = 74 %, field = 8472.13 s/ n! c/ K9 I! {' O8 g" H
Wed Sep 25 04:15:00 2013 : helium level = 66 %, nitrogen level = 68 %, field = 8513.7
2 F, s7 j* r0 O" }Thu Sep 26 04:15:00 2013 : helium level = 66 %, nitrogen level = 62 %, field = 8471.0
* X& p7 A5 P7 u& j1 F9 iFri Sep 27 04:15:00 2013 : helium level = 65 %, nitrogen level = 100 %, field = 8474.38 C- s ?7 k0 g7 ]5 W; B5 c
Sat Sep 28 04:15:00 2013 : helium level = 65 %, nitrogen level = 99 %, field = 8475.0
6 u, q- K8 T/ ~" vSun Sep 29 04:15:00 2013 : helium level = 65 %, nitrogen level = 93 %, field = 8480.3. l v: |, j; l# r
Mon Sep 30 04:15:00 2013 : helium level = 65 %, nitrogen level = 86 %, field = 8477.4/ S$ T# ]5 i& }5 g: n' i
Tue Oct 01 04:15:00 2013 : helium level = 64 %, nitrogen level = 100 %, field = 8480.4; @$ x4 z9 a! s) ^5 C$ S1 @
Wed Oct 02 04:15:00 2013 : helium level = 64 %, nitrogen level = 99 %, field = 8480.4
- e7 ~ f6 `7 r# DThu Oct 03 04:15:00 2013 : helium level = 64 %, nitrogen level = 93 %, field = 8480.4) y8 `6 v* Z. I8 G9 [
Fri Oct 04 04:15:00 2013 : helium level = 64 %, nitrogen level = 87 %, field = 8480.4
1 }5 ?: b3 e, iSat Oct 05 04:15:00 2013 : helium level = 63 %, nitrogen level = 81 %, field = 8480.4) B% A* @" f3 m+ F9 ^
Sun Oct 06 04:15:00 2013 : helium level = 63 %, nitrogen level = 75 %, field = 8480.4
# z3 k" K2 L4 M1 O* y+ j/ lMon Oct 07 04:15:00 2013 : helium level = 63 %, nitrogen level = 69 %, field = 8480.4- T l" j4 }8 M- L5 u# T: S
Tue Oct 08 04:15:00 2013 : helium level = 63 %, nitrogen level = 63 %, field = 8480.47 E6 K) O. j% F; T
Wed Oct 09 04:15:00 2013 : helium level = 62 %, nitrogen level = 100 %, field = 8514.4; @$ ~+ V2 K8 v9 Y6 y7 m
Thu Oct 10 04:15:00 2013 : helium level = 62 %, nitrogen level = 98 %, field = 8514.9
$ Q7 G2 l0 F/ @, J$ c4 Z. b0 z7 l0 wFri Oct 11 04:15:00 2013 : helium level = 62 %, nitrogen level = 92 %, field = 8482.4
. D; i+ U9 n& W$ w. I" @8 zSat Oct 12 04:15:00 2013 : helium level = 62 %, nitrogen level = 85 %, field = 8490.9
, ?" M* v. h8 gSun Oct 13 04:15:00 2013 : helium level = 61 %, nitrogen level = 79 %, field = 8490.90 J* L: G" r- z: ?% W
Mon Oct 14 04:15:00 2013 : helium level = 61 %, nitrogen level = 73 %, field = 8521.7
: Q& n2 k" P& b. p7 _5 bTue Oct 15 04:15:00 2013 : helium level = 60 %, nitrogen level = 67 %, field = 8530.4, g8 T* F! y% S9 ^# R
Wed Oct 16 04:15:00 2013 : helium level = 60 %, nitrogen level = 61 %, field = 8514.6
, a* B+ _ g8 u5 r3 Y8 `Thu Oct 17 04:15:00 2013 : helium level = 59 %, nitrogen level = 100 %, field = 8512.8" Q/ a, y; t6 |
Fri Oct 18 04:15:00 2013 : helium level = 58 %, nitrogen level = 97 %, field = 8514.22 m" t; A9 q+ L, D& l5 J
Sat Oct 19 04:15:00 2013 : helium level = 58 %, nitrogen level = 91 %, field = 8509.9' s9 j$ X2 m& [- _# X$ `3 b7 ~
Sun Oct 20 04:15:00 2013 : helium level = 57 %, nitrogen level = 85 %, field = 8510.7' e8 b: d7 _# Z( b9 }" O8 O+ ]& b
Mon Oct 21 04:15:00 2013 : helium level = 57 %, nitrogen level = 79 %, field = 8518.7& y. F: f5 C6 K, P' C4 N
Tue Oct 22 04:15:00 2013 : helium level = 57 %, nitrogen level = 73 %, field = 8478.29 t. T4 Y0 x( J* x( i" ^0 w
Wed Oct 23 04:15:00 2013 : helium level = 56 %, nitrogen level = 67 %, field = 8524.7- L% j/ R6 c7 B& {- K9 K6 S
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发表于 2013-10-23 14:36:43
