Calibration "to contain." Fee for calibration "to deliver" is same. For both calibrations, double fee shown. Adjustments of slicker plate measures to within accepted capacity tolerances, if requested, are done on a cost basis under 602.626z. 202.626f Field standards of capacity less than 5 gal (graduated neck type), (*) 202.626g Field standards of 5 gal capacity, each (*) 202.626h Field standards in excess of 5 gal but less than 50 gal capacity, first 10 (*) 202.626i Each additional 5 gal increment, field standards of 50 gal or more (*) 202.626m Calibration of field standards, graduated neck type, at more than one (*) 202.626n Adjustment of zero index or gage, each. (*) 202.6260 Apparatus disqualified for test, inspection and handling, each (*) 202.626z For calibrations not covered by the above schedule, fees will be *For current fees, see Appendix C. 202.627 Hydrometers. (a) Hydrometers are considered reference standards. Those instruments conforming with the recommendations on construction contained in NBS Circular 555,21 Testing of Hydrometers, will be accepted for calibration, acceptance based on inspection at the Bureau. 21. (b) For the purposes of this schedule, the following changes are made in Circular 555 21: (1) Hydrometers with duplex scales or flat scales are not considered suitable for use as laboratory standards and will not be accepted for calibration. (2) The thermometer element of a thermohydrometer will not be calibrated. (See ASTM specification E100, Standard Specification for ASTM Hydrometers.) (3) The results of calibration will be furnished together with a statement of uncertainty, on a National Bureau of Standards Report of Calibration. Use as a laboratory standard implies the use of corrections; therefore no reference to tolerance compliances will be made on the report. (c) Calibration consists of comparison at three or more points with a standard hydrometer. Fee in accordance with 202.627 applies. (d) Apparatus not accepted for calibration will be returned, appropriate inspection and handling fee being applicable. Each scale card must state the name of the manufacturer and his serial number, the standard temperature, and type of scale. Item Description Fee 202.627a Hydrometers, calibrated at three points, lots of 10 or more of identical (*) 202.627b Hydrometers, calibrated at three points, lots of less than 10, each of (*) 202.627c Calibration at additional points, each point... (*) 202.627d Hydrometers disqualified for calibration-inspection and handling (*) 202.627z For special calibrations not covered by the above schedule, fees will *For current fees, see Appendix C. 202.628 Density determinations of solids and liquids. (a) If the need is critical and the service is not available elsewhere, request may be accepted for the following density determinations: (1) Density of solids, determined by hydrostatic weighing in appropriate liquid. Solids generally to have a mass less than 175 g and a maximum dimension less than 15 cm. (2) Density of liquids, determined by weighing in picnometers at temperatures between 0 and 70 °C. (3) Associated tests such as the volume of solids, coefficient of thermal expansion for both solids and liquids. (b) Acceptance for test is based on consultation or correspondence regarding the exact. nature of the requirements. Do not ship materials to the Bureau until all arrangements for test have been completed. Fees for all tests are computed on a cost basis. 21 NBS Circular 555, Testing of hydrometers. Price 10 cents. Available from Superintendent of Documents, U.S. Government Printing Office, Washington, D.C., 20402; also in NBS Handbook 77, Precision Measurement and Calibration, Vol. III, Optics, Metrology, and Radiation, p. 707 (see p. 135 for price information and order form). 202.628z Density determinations for solids and liquids, fees computed on a cost Part 203-Heat Temperature Physics Sec. 203.101 Laboratory thermometers 203.102 Thermocouples, thermocouple materials, and pyrometer indicators 203.103 Resistance thermometers 203.105 Optical pyrometers and ribbon filament lamps. Cryogenic Physics 203.301 Capsule-type germanium resistance thermometers Temperature Physics 203.101 Laboratory thermometers. Only thermometers identified uniquely by serial number will be accepted for test. Item Description Fee 203.101a Thermometers, testing at points from 0 to 100 °C inclusive, or from (*) 203.101b Thermometers, testing at points from 101 to 300 °C inclusive, or from (*) 203.101c Thermometers, testing at points from 301 to 500 °C inclusive, or (*) 203.101d Thermometers, testing at points from 1 to -110 °C inclusive, or (*) 203.101e Thermometers, testing in liquid air, oxygen, or liquid nitrogen (—183 (*) 203.101f Calorimeter thermometers... (*) 203.101g Beckmann thermometers, with 5° or 6° scale, testing at 0.5° intervals (*) 203.101h When instruments submitted are found to be unsuitable for test or (*) See footnote at end of table. 203.101i 203.101z Preliminary examination for foreign material in the mercury column For special tests not covered by the above schedule, fees will be *For current fees, see Appendix C. (*) 203.102 Thermocouples, thermocouple materials, and pyrometer indicators. (a) Only the bare wires are required in order to perform the thermocouple calibrations in this schedule. It is preferable not to send insulating and protecting tubes, as the rate of breakage of these in shipment is high. If the thermocouple is furnished mounted (as in a protection-tube assembly) a charge of $5.00 will be made for dismantling the mounting, and the various parts will be returned to the sender without reassembling them. (b) Thermocouple length requirements listed below are exclusive of lead wire. Lead wire need not be sent with thermocouples. (c) All thermocouple calibration data furnished in reports will be on the basis of a reference junction temperature of 0 °C, or 32 °F. (d) The calibration or test of an article will not be undertaken if, in our opinion, the article will not yield the specified accuracy, or if it possesses such unusual characteristics as to be prevent the carrying out of the calibration or test at a reasonable cost. Only unused basemetal thermocouple materials will be accepted for test. Item Description Fee 203.102a 203.102b High-temperature thermocouples and thermocouple materials. Mini- The uncertainties in the values of temperature corresponding to the values of emf reported for platinum versus platinum-rhodium thermocouples are estimated not to exceed 0.5 degree in the range 0 to 1100 °C and increase to not more than 2 degrees at 1450 °C. Results for platinum versus platinum10% rhodium thermocouples are given at 1 degree intervals over the entire range 0 to 1450 °C. The uncertainties in the values of temperature corresponding to the values of emf reported for base-metal thermocouples are estimated not to exceed 1 degree Celsius. Base-metal thermocouples are not tested above 1100 °C (2000 °F). Thermocouple materials are tested against platinum thermoelectric standards maintained by the Bureau. High-temperature thermocouples and thermocouple materials. Cali- See footnotes at end of table. (*) (*) 203.102c 203.102d 203.102e Platinum versus platinum-10% rhodium 1063 °C (gold point), 960.8 °C (silver point), 630.5 °C, 419.5 °C (zinc point). Calibration uncertainty estimated not to exceed 2 μV (about 0.2 degree Celsius). Platinum versus platinum-10% rhodium thermocouples. The Uncertainty in emf reported for the fixed point temperatures is estimated not to exceed 2 μV. Uncertainties in values given in the table are estimated not to exceed 0.3 degree Celsius in the range 0 to 1100 °C, and increase not more than 2 degrees at 1450 °C. If the submitted thermocouple meets the requirements of the International Practical Temperature Scale for standard thermocouples (see the International Practical Temperature Scale of 1948 by H. F. Stimson, J. Res. NBS 65A, 139, 1961),22 a quadratic equation fitted at 1063, 960.8, and 630.5 °C will also be furnished. In High-temperature thermocouples and thermocouple materials. (*) (*) (*) 203.102f Base-metal thermocouples. Minimum length, 36 in. Corresponding (*) Minimum calibration per thermocouple, two points. 203.102g Base-metal thermocouples. Minimum length, 36 in. Corresponding (*) 203.102h Minimum calibration per thermocouple, two points. (*) Minimum calibration per thermocouple, two points. 203.102i Pyrometer indicators. Calibration of single scale or meter of single (*) See footnotes at end of table. |