NAVY A-A-50625-1994 LIQUID FLOW SENSOR《液体流量传感器》.pdf

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1、A-A-50625 9999974 OLbq32b T99 METRIC U A-A-50625(SH) 9 July 1994 COMMERCIAL ITEM DESCRIPTION LIQUID FLOW SENSOR The General Services Administration has authorized the use of this commercial item description in preference to MIL-S-16032. Abstract. This commercial item description covers requirements

2、for liquid flow sensors suitable for use in naval ships, Liquid flow sensors include rotameters, flow switches, flowmeters and vortex shedding devices. Salient characteristics. 1. Range. Unless otherwise specified, the range shall be in liters per second. 2. Accruacy. Accuracy shall be plus or minus

3、 2 percent full scale 3. Fluid. The type of fluid to be monitored shall be as specified. 3.1 Pressure. Minimum, maximum and normal pressures, in kilograms per 3.2 Temperature. Minimum, maximum and normal temperatures, in degrees 3.3 Flow rate. Minimum, maximum and normal flow rates, in kilograms per

4、 3.4 Fluid viscosity. Minimum, maximum and normal fluid viscosity shall unless otherwise specified. square meter, of the fluid shall be as specified. Celsius, of the fluid shall be as specified. square meter, shall be as specified. be as specified. t 1 Beneficial comments, recommendations, additions

5、, deletions, and any other pertinent data which may improve this document should be addressed to: Commander, SEA 05442, Naval Sea Systems Command, 2531 Jefferson Davis Hwy, Arlington, VA 22242-5160. AMSC N/A FSC 5930 DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited. P

6、rovided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-50625 m 999997rl OLbq327 920 m A-A-50625(SH) 3.5 Pressure drop. Maximum acceptable pressure drop, in kilogram per 4. Rotameters. The following shall be as specified: square meter, through the sensor

7、shall be as specified. (a) Port connection - 1/2 inch NPT (no metric equivalent) female or (b) Type of mounting. (i) Piping. (2) Panel. as specified. 5. Flow switch. The following shall be as specified: (i) Solid-state - 75 mA, 24 Vdc. (2) Relay - 2 A, 115 Vac. (a) Type of output. (b) Electrical con

8、nection - 2 meter cable or as specified. (c) Excitation - 115 Vac., 60 Hz. (d) Range of adjustment. (e) Enclosure. (i) NEMA 4X for general use. (2) NEMA 7 for hazardous locations. (f) Port - 1/2 inch NPT (no metric equivalent) female or as specified. 6. Flowmeter. The following shall be as specified

9、: (a) Accuracy - plus or minus 5 percent or as specified. (b) Connection port - 1/2 inch NPT (no metric equivalent) female or as specified. 7. Vortex shedding. The following shall be as specified: (a) Piping size. (b) Type of output. (2) 1 to 5 Vdc (c) Excitation - 115 Vac, 60 Hz (d) Enclosure (i) (

10、2) NEMA 7 for hazardous locations. (e) Vibration compensation unless otherwise specified. (f) Cable entrance - 3/4 inch NPT (no metric equivalent) conduit (1) 4 to 20 mA NEMA 4X for general use. hub or as specified. 8. Vibration. Vibration requirements shall be as specified. 9. Shock. Shock requirem

11、ents shall be as specified. Oualitv Assurance Provisions. 1. Contractor certification. The contractor shall certify and maintain substantiation evidence that the product offered meets the salient characteristics of this Commercial Item Description and that the product conforms to the producers own d

12、rawings, specifications, standards and quality assurance practices. The Government reserves the right to require proof of such conformance prior to the first delivery and thereafter as may be otherwise provided for under the provisions of the contract. 2 Provided by IHSNot for ResaleNo reproduction

13、or networking permitted without license from IHS-,-,-A-A-50625 m 9999974 0164328 8b7 A-A-50625(SH) 2. Regulatorv requirements. The offerer/contractor is encouraged to use recovered materials in accordance with Public Law 94-580 to the maximum extent practical. preservation, packaging, packing, label

14、ing and marking shall be as specified. NOTES. 3. Preservation. packaginn. Dackine labeline. and marking. The 1. Acquisition reauirements. Acquisition documents must specify the following: (a) Range (b) Accuracy (c) Fluid (d) Pressure (e) Temperature (f) Flow rate (g) Fluid viscosity (h) Pressure dro

15、p (i) Shock and vibration (j) Type of sensor (1) Rotameter (2) Flow switch (3) Flowmeter (4) Vortex shedding (k) Preservation, packaging, packing, labeling and marking. 2. NEMA is available from the National Electrical Manufactures Association, 2101 L Street, N.W., Suite 300, Washington, DC 20037-15

16、80. 3. Unless otherwise indicated federal and military specifications, standards, and handbooks are available from the Standardization Documents Order Desk, Bldg. 4D, 700 Robbins Avenue, Philadelphia, PA 19111-5094. Preparing activity: Navy - SH (Project 5930-N749) 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-