NAVY A-A-50620-1994 ELECTRODE PH COMBINATION SEALED《密封化合物PH电极》.pdf

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1、A-A-50620 9999974 0362303 b02 W A-A-5 062 O 28 January 1994 COMMERCIAL ITEM DESCRIPTION ELECTRODE, pH, COMBINATION SEALED The General Services Administration has authorized the use of this commercial item description as a replacement for DOD-E-24636 (SH) which is cancelled. Score: and reference elec

2、trode which is used in conjunction with a digital indicating pH meter to measure the pH of boiler water aboard naval ships. cable and connectors shall be compatible with the shipboard digital pH meter in use. This commercial item description covers a combination pH The combination electrode and its

3、connecting Salient characteristics: The electrode shall be permanently sealed and non- refillable. The outer body of the electrode shall consist of a rigid, impact-resistant opaque polymer material. Beneficial comments (recommendations, additions, deletions) and any pertinent data which may be of us

4、e in improving this document should be addressed to: Commander, SEA 03R42, Naval Sea Systems Command, 2531 Jefferson Davis Hwy., Arlington, VA 22242-5160, by using the self-addressed Standardization Document Improvement Proposal (DD Form 1426) appearing at the end of this document or by letter. Il D

5、ISTRIBUTION STATEMENT A. distribution is unlimited. AMSC N/A FSC 6630 II Approved for public release; Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-50620 9999974 03623OLl 549 = A-A-5062 O The outer body of the electrode shall extend below the b

6、ottom of the glass sensing element in order to prevent accidental breakage of the glass and to enable the electrode to be used as a stirring rod in glass or plastic beakers. The electrode shall be shipped with the sensing and reference elements sealed in a liquid storage medium in order that the ele

7、ctrode be ready for use when received. length, with an outside diameter from 1 to 2 centimeters. 75 and 125 centimeters in length. with connectors for inputting to a digital pH meter. connectors to be provided shall consist of the following: Electrode dimensions shall be from 13 to 18 centimeters in

8、 The electrode electrical connecting cable shall be between Each electrode electrical connecting cable shall be provided The type of 1. One U.S. standard type connector for the sensing element. 2. One pin-tip connector for the reference element. In addition to the above connectors on the electrical

9、connecting cable, a separate adaptor, U.S. standard electrode to BNC meter shall also be provided. the digital pH meter in use requires a BNC input connector. Performance characteristics shall be such that pH can be measured between 0.00 and 13.99 pH units from O degrees Celsius (OC) to 100 C with a

10、 precision and accuracy of f 0.05 pH units. For samples in equilibrium with the ambient temperature, attainment of a stable pH reading shall require no longer than one minute from time of immersion of the electrode in the sample. For samples at temperatures other than ambient, no longer than five mi

11、nutes shall be required for the pH determination. A meter reading that does not vary by more than k 0.02 pH units in 30 seconds shall constitute a stable pH reading. WorkmanshiD: foreign material, smudges, scratches or loose particles which may interfere with normal operation of the electrode. surfa

12、ces shall be clean and free from any marks which would detract from a new appearance. This adaptor must be used if the Electrodes shall be free from interior or exterior Electrode 1 . Reaulatorv requirements: use recovered materials in accordance with Public Law 94-580 to the maximum extent. The off

13、eror/contractor is encouraged to 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-5062 O Preservation, Dackasinq, ackinq, labelinq and markinq: The preservation, packaging, packing, labeling and marking shall be as specified in the contract or p

14、urchase order. If unspecified, the preservation, packaging, packing, labeling and marking shall be consistent with acceptable commercial practice. Notes: 1. Identification markings on the electrode shall show the name of the unit, date of manufacture, model number, serial number, national stock numb

15、er and name of the contractor. 2. The contractor shall pack with each electrode, instructions for maintenance, use and storage of the electrode. 3. A combination sealed pH presently in the Federal Stock System has the following stock number: 9L 6630-01-063-9985. 4. items available from: pH sealed co

16、mbination electrodes are commercial Sensorex 11661 Seabord Circle Stanton, CA 90680 714-895-4344 Innovative Sensors 4745 East Bryson Street Anaheim, CA 92807 714-779-8781 Orion Research 529 Main Street Boston, MA 02129 617-242-3900 5. An adaptor for connecting a U.S. standard electrode to a BNC mete

17、r is available from: Apple Scientific 8378 Mayfield Road Chesterland, OH 44026 216-729-3056 (Orion Cat. No. 090033) 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-50b20 = 9999974 01b230b 311 A-A-5 O 62 O MILITARY COORDINATING ACTIVITY: PREPARING ACTIVITY: NAVY - SH NAVY- SH CUSTODIANS: NAVY - SH AIR FORCE - 99 REVIEW ACTIVITIES: NAVY - AS ARMY - AV, ME AIR FORCE - 82 USER ACTIVITIES: NAVY - CG AIR FORCE - 21 (PROJECT 6630-N555) 4 c Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-