Capacity exceeding 111,000 lb but not exceeding 200,000 lb: 206.045g Compression.. (*) 206.045h Capacity exceeding 200,000 lb but not exceeding 300,000 lb: (*) 206.045z For special tests not covered by the above schedule, fees will be 206.211a 206.211b Deadweight piston gages other than controlled clearance gages Controlled clearance piston gages. Determination of effective area, Fee 206.211c 206.211d 206.211e 206.211z Barometers, Fortin or similar types, range 28 to 31 in. Hg, tube Manometers, manually operated, with tube bore 0.5 in. or greater, in Manometers, with tube bore 0.5 in. or greater, in which both mercury For special tests not covered by the above schedule (for example, cali- Vacuum Measurements 206.221 Vacuum measurements. Item 206.221a 206.221z Description Vacuum gages, For special tests not covered by the above schedule, fees will be Fee *McLeod gages are not accepted by NBS for calibration, because use of a McLeod gage as a reference instrument depends upon dimensional and volumetric measurements of the instrument made prior to assembly, and upon use of appropriate time-varying corrections, particularly capillary depression fluctuations, determined periodically during use. A calibration by comparison is thus considered to be of little value in use of this type of instrument as a reference standard. Vibration Measurements 206.231 Vibration pickups. (a) This applies to the calibration of displacement, velocity, and acceleration types of vibration pickups. A report of calibration is issued. (b) Each piezoelectric acceleration pickup which is used with a cathode-follower or amplifier shall be accompanied by the cathode-follower or amplifier, the power supply if other than batteries, and the output and connecting cables. 784-291 065- 8 (c) Each piezoelectric acceleration pickup whose output is read directly with a highmpedance meter can be but need not be accompanied by the meter, but shall be accompanied y the output cable and suitable shielded connector. (d) When instruments submitted are found to be unsuitable for test or unreliable, a charge vill be made to cover the cost of the work done. Item Description Fee 06.231a 206.231b 206.231c 206.231d Static calibration on a tilting support in the earth's gravitational Static calibration on a centrifuge at four different applied accelera- case_ For additional tests or measurements required to determine location of seismic Dynamic calibration of velocity pickups weighing up to 2 lb in the For each test frequency in excess of 10, an additional charge equal to one-tenth Dynamic calibration of acceleration and displacement pickups weigh- For each test frequency in excess of 10, an additional charge equal to one-tenth of See footnote at end of table. (*) (*) (*) (*) 206.231e 206.231z Dynamic calibration of piezoelectric acceleration pickups weighing For each test frequency in excess of 10, an additional charge equal to one-tenth of For special tests not covered by the above schedule, such as dynamic *For current fees, see Appendix C. (*) Humidity Measurements 206.241 Humidity instruments. (a) Instruments of high accuracy and stability suitable for use as laboratory or plant standards are accepted for calibration. (b) Instruments ordinarily are calibrated with air of known moisture content. (c) Calibrations can be furnished in terms of dewpoint temperature, mixing ratio, volume ratio, and relative humidity. (d) Acceptance for test is based on consultation or correspondence regarding the exact nature of the user's requirements. Requests for calibration should be accompanied with technical information on the type of instrument, manufacturer, operating range (s), and number of test points required. Instruments should not be forwarded to the National Bureau of Standards until all arrangements for test have been completed. (e) When instruments submitted are found to be unsuitable for test or unreliable, a test may be discontinued and a charge will be made to cover the cost of the work done. Item Description Fee Dewpoint hygrometers, automatic operation: 206.241a Calibration at six test points in the dewpoint temperature range of (*) 206.241b Calibration at nine test points in the dewpoint temperature range of (*) See footnote at end of table. Dewpoint hygrometers, manual operation: 06.241c Calibration at six test points in the dewpoint temperature range of (*) 06.241d Calibration at nine test points in the dewpoint temperature range of (*) Coulometric hygrometers: 06.241e Calibration at six test points in the range 30,000 to 1,000 ppm (by (*) 06.241f Calibration at nine test points in the range 1,000 to 40 ppm (by (*) 06.241g Calibration at six test points in the range 30 to 2 ppm (by volume)__ (*) 06.241h Calibration at five test points in the mixing ratio range 14 to 0.4 g (*) Electric hygrometers: 06.241i Calibration at test points from 24 to 98 percent relative humidity in (*) 06.241j 06.241k 06.2411 Calibration at test points from 10 to 24 percent relative humidity in Calibration at test points from 24 to 98 percent relative humidity in Calibration at test points from 10 to 24 percent relative humidity in (*) (*) (*) 06.241z For special tests not covered by the above schedule, fees will be *For current fees, see Appendix C. |