AS 2819-1985

1 - AS 2819-1985 THERMOMETERS-METEROLOGICAL-MAXIMUM,MINIMUM AND ORDINARY
4 - PREFACE
5 - CONTENTS
6 - SECTION 1. SCOPE AND GENERAL
6 - 1.1 SCOPE.
6 - 1.2 APPLICATION.
6 - 1.3 DESIGNATION.
6 - 1.4 REFERENCED DOCUMENTS.
6 - 1.5 DEFINITIONS.
6 - 1.5.1 Complete immersion
6 - 1.5.2 Free fall
6 - 1.5.3 Index
6 - 1.5.4 Permanent marking
6 - 1.5.5 Retraction
6 - 1.5.6 Retreat
6 - 1.5.7 Shake down
6 - 1.5.8 Thermometer
6 - 1.5.9 Throw over (‘run forward’)
6 - 1.6 RANGE.
6 - 1.7 PACKAGING.
6 - 1.8 IDENTIFICATION MARKING.
6 - 1.8.1 Thermometer.
7 - 1.8.2 Containers.
8 - SECTION 2. DESIGN AND CONSTRUCTION
8 - 2.1 SCOPE OF SECTION.
8 - 2.2 GENERAL.
8 - 2.3 FILLING FOR THERMOMETERS.
8 - 2.3.1 Mini mum thermometers.
8 - 2.3.2 Maximum thermometers.
8 - 2.4 STEM OF THERMOMETER.
8 - 2.4.1 Glass.
8 - 2.4.2 Safety chamber.
8 - 2.4.3 Fini sh at top.
8 - 2.5 BULB.
8 - 2.5.1 Glass.
8 - 2.5.2 Shape.
8 - 2.6 INDICATING DEVICE.
8 - 2.6.1 Maximum thermometers.
8 - 2.6.2 Mini mum thermometer.
9 - 2.7 SHEATH.
9 - 2.7.1 General.
9 - 2.7.2 Glass.
9 - 2.7.3 Dimensions.
9 - 2.7.4 Union with stem.
9 - 2.7.5 Joint lines.
9 - 2.7.6 Moisture content of air enclosed by sheath.
9 - 2.7.7 Finish at top.
9 - 2.7.8 Stem support inside sheath.
9 - 2.8 MOUNTS.
9 - 2.8.1 Maximum and minimum thermometers.
10 - 2.8.2 Ordi nary thermometers.
11 - 2.9 VACUUM ABOVE MERCURY IN A MAXI-MUM THERMOMETER
11 - 2.10 DIMENSIONS.
11 - 2.11 GRADUATION.
11 - 2.11.1 Intervals.
11 - 2.11.2 Length of scale.
11 - 2.11.3 Position of scale.
12 - 2.11.4 Graduation lines.
12 - 2.12 FIGURING OF GRADUATION LINES.
12 - 2.12.1 Maximum and minimum thermometers.
12 - 2.12.2 Ordinary thermometer.
13 - SECTION 3. PERFORMANCE REQUIREMENTS
13 - 3.1 INTRODUCTION: SEQUENCE FOR CONDUCTING TESTS
13 - 3.2 ALCOHOL FILLING FOR MINIMUM THERMOMETERS.
13 - 3.2.1 Aldehydes and ketones content.
13 - 3.2.2 Esters content.
13 - 3.2.3 Amines.
13 - 3.3 ANNEALING.
13 - 3.4 ABILITY TO WITHSTAND ELEVATED TEMPERATURES
13 - 3.5 THERMOMETER ACCURACY.
13 - 3.6 PERMANENCE OF MARKINGS.
14 - APPENDIX A - METHOD OF TESTING THE OPERATION OF THE CONSTRICTION IN THE BORE OF A MAXIMUM THERMOMETER
14 - A1 RETREAT TEST.
14 - A2 THROW-OVER TEST.
14 - A3 SHAKE-DOWN TEST.
15 - APPENDIX B - METHOD OF TESTING THE OPERATION OF THE INDICATING DEVICE OF A MINIMUM THERMOMETER
15 - B1 FREE-FALL TEST.
15 - B2 RETRACTION TEST.
16 - APPENDIX C - DETECTION OF STRAIN IN GLASS USING A SIMPLE POLARISCOPE
16 - C1 SCOPE.
16 - C2 APPARATUS.
16 - C3 PROCEDURE.
16 - C4 REPORT.
18 - APPENDIX D - ACCELERATED WEATHERING TEST TO ASSESS THE PERMANENCE OF MARKINGS AND THE DURABILITY OF THE MATERIAL USED TO COAT
18 - D1 SCOPE.
18 - D2 PRINCIPLE.
18 - D3 APPARATUS AND MATERIALS REQUIRED.
18 - D3.1 U.V. apparatus.
18 - D3.2 Humidity cabinet.
18 - D3.3 Cotton wool.
18 - D3.4 Detergent solution.
18 - D4 PROCEDURE.
18 - D4.1 Method for exposure to U.V. light.
18 - D4.2 Method for exposure to hi gh humidi ty environment.
19 - D5 REPORT.
20 - APPENDIX E - METHOD FOR ASSESSING THE ABILITY O WITHSTAND ELEVATED TEMPERATURES
20 - E1 SCOPE.
20 - E2 APPARATUS.
20 - E3 PROCEDURE.
20 - E4 REPORT.
21 - APPENDIX F - METHOD FOR DETERMINING THE RESISTANCE OF THE STEM OF A THERMOMETER TO THERMAL SHOCK
21 - F1 SCOPE.
21 - F2 APPARATUS.
21 - F3 PROCEDURE.
21 - F4 REPORT.
22 - APPENDIX G - MECHANICAL SHOCK TEST FOR A MOUNTED THERMOMETER
22 - G1 SCOPE.
22 - G2 APPARATUS.
22 - G2.1 A test tube shaker
22 - G2.2 A stopwatch or timing device
22 - G3 PROCEDURE.
22 - G4 REPORT.
23 - APPENDIX H - GLASSES FOR THE BULBS OF METEOROLOGICAL THERMOMETERS
24 - APPENDIX J - METHOD OF TEST FOR ESTER CONTENT OF SPIRIT FILLING
24 - J1 SCOPE.
24 - J2 SOLUTIONS.
24 - J3 APPARATUS.
24 - J4 PROCEDURE.
24 - J5 CALCULATION.
24 - J6 REPORT.
25 - APPENDIX K - METHOD OF TEST FOR AMINES IN SPIRIT FILLING
25 - K1 SCOPE.
25 - K2 SOLUTIONS.
25 - K3 PROCEDURE.
25 - K4 ACCEPTANCE CRITERION.
25 - K5 REPORT.
26 - APPENDIX L - DETERMINATION OF COMPLIANCE OF A LOT
26 - L1 AUSTRALIAN STANDARDS MARK.
26 - L2 ASSESSMENT OF COMPLIANCE ON THE BASIS OF STATISTICAL SAMPLING.
26 - L3 ASSURANCE OF COMPLIANCE ON THE BASIS OF SUPPLIERS QUALITY CONTROL SYSTEMS.

Specifies requirements for the glasses, filling, mounts, sheaths and figuring of maximum, minimum and ordinary thermometers as well as fully manufactured thermometers. Contains supportive physical and chemical tests for all major specifications including the permanence of markings.

This standard specifies requirements for the design, construction and testing of-(a) sheathed,(b) unsheathed and(c) backed maximum, minimum and ordinary meteorological thermometers and their mountings.