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Hydrogen Concentration Measurement Technology

1995,[link widoczny dla zalogowanych], the smallest achievable residual unbalance is defined as: rotor balancing machine can reach the minimum amount of residual unbalance. It is a measure of the maximum balance balancing machine main indicators. In the wheel balancing machine for testing,[link widoczny dla zalogowanych], calibration and quality control,[link widoczny dla zalogowanych], we need to measure this value. How to accurately and scientifically measured this value is a technical issue worth exploring. Although the ministerial standard OB/T9390-1998 horizontal hard bearing balancing machine \Testing is judgmental. Dynamic balancing machine as long as they are given according to the measured minimum achievable residual unbalance u ~ (or the minimum achievable residual unbalance e ~) to determine test weight,[link widoczny dla zalogowanych], and re-tested in Canada after a group of collected amplitude imbalance A; meet: 0.88 ~ A <A ? <1.1 (12) (amplitude imbalance of the group A; the average), then given that the dynamic balancing machine minimum achievable residual unbalance u ~ qualified. For example given u ~ = 60g. I assemble, measured satisfaction (12), then that u,. . . r should be less than or equal to 60g. r puzzle, in line with the provisions of the technical requirements. However, the exact value of u ~ How much is not known. Industry experts and technical staff on this issue has been the study and has developed some valuable measurement method, the following two are recommended. ① The estimated residual rotor unbalance is equivalent to 5 to l0 times the test re-u added, followed by equal portions added to each angle of the rotor position l2, start balancing machine and read the corresponding angle of a uneven indication l2 (cell number), find the arithmetic mean of readings l2 A, the balance of dynamic balancing machine calibration coefficient k is: k = U plus / A (g.mm /, {s) (13) is the smallest achievable residual unbalance u a can be expressed as: a = k ・ (g.mm) (14) where the A a, A are the maximum and minimum values. ② According to the test order \. The actual minimum achievable residual unbalance u ~ has the following relationship: one. : A =: 0.12A, namely:,, Br. Wire divinatory r1 gas, ~ 20.12A, ... by (14), (15), we know, by adding trial weights u add, or give the minimum achievable residual unbalance u and a set of data can be measured accurate The minimum achievable residual unbalance u ~, by the relationship: emar = U a / M16) can be measured minimum achievable residual unbalance e ~. Experiments show that the same test conditions, the results of the above two measurement methods are consistent. <<<'<<<<<<<<<<<<<<<<''<<<<< ;<<'<<<<<<<<< ≮ <<<<<<<<<<<<< ;\;'<<<<<<<<<'<<<\I ~ TEL's 89C51 single-chip microprocessor, together with other typical external circuit. Its task is to complete the monitoring process control, data processing, computing, storage, and display, as shown in Figure l. 3 Conclusion protect the safety of the existing turbine's normal operation, the social and economic benefits are obvious. Development of the hydrogen concentration in the domestic line monitoring system, real-time monitoring of the generator hydrogen cooling system for improving the power factor of safety of 6 machines, and its significance. The success of this technology in the metallurgical, chemical and other departments are also great application value. Barriers Bu 'l!:::: CPU -. Turn factory-1H - + plant in Figure 1

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