PD_Rev3_16M-263A-DI_Height_Measuring_Instrument_May_13_2016_(004).pdf

16M-263A-DI

13 May 2016

Rev. 3

PURCHASE DESCRIPTION

FOR

HEIGHT MEASURING INSTRUMENT

1. SCOPE:

This procurement is for a height measuring instrument that will be used at most U.S. Air Force Precision

Measurement Equipment Laboratories (PMELs). The height measuring instrument is used to measure vertical height and perpendicularity up to 24 inches.

2. GENERAL REQUIREMENTS:

2.1 The height measuring instrument shall include all components necessary to measure vertical height up to 24 +/- 1 inch and perpendicularity up to 24 +/- 2 inch.

2.2 The height measuring instrument shall include a gage head and a mount that will be interfaced to the electronic display when measuring perpendicularity.

2.3 The height measuring instrument shall include a setting block to standardize the height measuring instrument when measuring from a bottom surface. The setting block will compensate for the height measuring instrument probe diameter.

2.4 The height measuring instrument shall include an electronic display with keys that can be selected to accomplish various preprogrammed internal and external measurements. In addition, all necessary cabling, battery, AC adapter/power supply shall be provided.

2.5 The height measuring instrument shall include a small diameter spherical probe kit for use when measuring vertical height. The small diameter spherical probes will be mounted vertically for measuring small parts or narrow shoulders.

2.6 The height measuring instrument shall include a long range spherical probe kit for use when measuring vertical height. The Long range spherical probes will be mounted horizontally for access into hard to reach areas on parts being measured.

2.7 The height measuring instrument shall be able to be operated by being plugged into the laboratory receptacle or be able to be operated using a built-in rechargeable battery. Laboratory receptacle power is 120 volts, 60Hz. The height measuring instrument shall be able to operate for at least 6 hours when using the battery. The battery shall be able to be recharged by plugging the height measuring instrument into the laboratory receptacle.

2.8 The height measuring instrument shall be capable of being moved on the surface plate using the built-in pneumatic pump that will create a film of air under the instrument’s feet. The height measuring instrument shall maintain its reference when being moved on the surface plate.

2.9 The height measuring instrument’s probe shall be able to be moved up and/or down the vertical column by hand or by using the built-in motorized drive system. The motorized drive system will automatically move the probe up and/or down when triggered by selecting the appropriate key.

2.10 The height measuring instrument shall have temperature compensation that can be turned on and/or off. The temperature compensation shall allow the operator to input laboratory temperature and the coefficient of thermal expansion for the part being measured. Temperature

Rev. 3 compensation when turned on will correct for the difference between the coefficient of thermal expansion for the part being measured and the coefficient of thermal expansion for the height measuring instrument built-in electronic scale.

2.11 The height measuring instrument’s built-in electronic scale shall have a coefficient of thermal expansion within the range of 6.0 µin per inch per degree F. to 7.0 µin per inch per degree F.

2.12 The height measuring instrument shall be standardized prior to measuring perpendicularity using a precision18 inch granite square currently owned by the laboratory. The standardization process using the granite square will generate perpendicularity corrections for the height measuring instrument’s vertical column that will be applied when measuring the perpendicularity of a part.

2.13 Vertical Height Measurement Resolution: The height measuring instrument shall have multiple resolutions to include, but not limited to 0.001, 0.0001 and 0.00001 inches and their metric equivalent.

2.14 Perpendicularity Measurement Resolution: The height measuring instrument shall have multiple resolutions to include, but not limited to 0.001, 0.0001 and 0.00001 inches, degrees, minutes, seconds, and their metric equivalent.

2.15 The height measuring instrument shall measure flatness, parallelism, and internal/external diameter.

2.16 The height measuring instrument shall measure internal and external lengths between measured surfaces and/or planes.

2.17 The height measuring instrument shall measure vertical straightness.

2.18 The height measuring instrument shall measure perpendicularity of a best fit line defined by beginning and ending measurement positions.

2.19 The height measuring instrument shall include calibration instructions for calibrating the vertical height electronic scale using gage blocks. The calibration instructions shall identify all gage block sizes and the process for adjusting/aligning and updating all correction tables when the height measuring instrument calibration results exceed specification. Adjustment/alignment instructions shall be provided when using software or when inputting data via the electronic display keypad. If required, the user shall be provided all interface cables and software.

2.20 The height measuring instrument shall include instructions for cleaning the vertical electronic scale and reader head.

2.21 The height measuring instrument shall include calibration instructions for calibrating the gage head (used to measure perpendicularity) using gage blocks when interfaced to the electronic display. The calibration instructions shall identify all gage block sizes and the process for adjusting/aligning the gage head/probe to the electronic display when the gage head/probe calibration results exceed specification. Adjustment/alignment instructions shall be provided when using software or when inputting data via the electronic display keypad. If required, the user shall be provided all interface cables and software.

2.22 The height measuring instrument shall include calibration instructions and specifications for calibrating the setting block.

Rev. 3

3.0 PERFORMANCE REQUIREMENTS:

3.1 Height Measuring Instrument Measurement Errors and Uncertainty:

3.1.1 The height measuring instrument vertical length measurement uncertainty shall not exceed (80 + L/0.6) µin, where L = nominal vertical length in inches or (2 + L/600) µm, where L = nominal vertical length in millimeters.

3.1.2 The height measuring instrument repeatability on a plane shall not exceed 25 microinches.

3.1.3 The height measuring instrument front to back perpendicularity measurement uncertainty shall not exceed 150 µin over 18 inches, which is equivalent to 1.7 arc seconds when standardized using the precision 18 inch granite square.

3.1.4 The height measuring instrument perpendicularity measuring gage head/probe measurement uncertainty shall not exceed +/- 20 microinches.

3.2 Small Diameter Spherical Diameter Probe Kit:

3.2.1 The height measuring instrument shall include a small diameter probe kit for use when measuring vertical height. The small diameter spherical probes will be mounted vertically when attached to the height measuring instrument. The small diameter spherical probes will provide better measurement on parts with narrow shoulders.

3.2.2 The small diameter probe kit shall include at least 3 spherical probes that diameters of 1 mm, 2 mm and 3 mm.

3.2.3 The small diameter probe kit shall include one tapered probe.

3.2.4 The length of each small diameter probe shank shall be between 0.9 to 1.25 inches in length.

3.2.5 The small diameter probe kit shall include all necessary hardware to mount the small diameter probes to the height measuring instrument.

3.3 Long Range Spherical Diameter Probe Kit:

3.3.1 The height measuring instrument shall include a long range spherical probe kit for use when measuring vertical height. The long range spherical probes will be mounted horizontally when attached to the height measuring instrument. The long range spherical probes will allow access into hard to reach areas on parts being measured.

3.3.2 Shall include a probe with a spherical diameter between 3 to 4 mm and a shank length between 25 to 40 mm.

3.3.3 Shall include a probe with a spherical diameter between 5 to 7 mm and a shank length between 35 to 50 mm.

3.3.4 Shall include a probe with a spherical diameter between 10 to 12 mm and a shank length between

55 to 70 mm.

3.3.5 Shall include a probe with a spherical diameter between 10 to 12 mm and a shank length between

90 to 110 mm.

Rev. 3

3.3.6 The long range probe kit shall include all necessary hardware to mount the small diameter probes to the height measuring instrument.

3.4 Setting Block:

3.4.1 The height measuring instrument shall include a setting block to define probe sphere diameter when measuring from a bottom surface.

3.5 Gage Head Attachment For Measuring Perpendicularity:

3.5.1 The height measuring instrument shall include a plunger type gage head and a mount that will be interfaced to the electronic display when measuring perpendicularity.

3.5.2 The gage head shall include a mechanism that will allow the plunger to be retracted by hand.

4.0 PHYSICAL/MECHANICAL REQUIREMENTS:

4.1 Ancillary Equipment: The following shall be provided:

4.1.1 The small diameter probe kit and the long range probe kit shall be placed in one or more wood or plastic protective cases that have positive locking latches. The interior of the case shall have form fitting oil resistant cut-outs for each component.

4.1.2 The setting block shall be placed in a protective case.

4.1.3 The gage head (for measuring perpendicularity) shall be placed in a wood or plastic protective case that has a positive locking latch. The interior of the case shall have form fitting oil resistant cut-outs for each component

4.1.4 A complete manual shall be provided in electronic format. The manual shall guide the technician through various set-ups and measurement processes for measuring length and perpendicularity.

The manual shall identify the part number of all components that are part of the height measuring instrument.

4.2 Operating Environment: All purchase description specifications shall be met when the unit is used within an environment where the temperature is 73 ± 6.0 ºF and the humidity is 20% to 50%

RH.

4.3 Model and Serial Number Identification: Each protective case and the height measuring instrument shall have a label attached in a visible location that identifies the Noun, Part Number, Serial Number, and Manufacturer. Unique item identification shall follow the Item Identification and Valuation clause as stated in the contract.

5.0 TESTING:

This item will be inspected and accepted at destination as stated in the contract. The item will be checked with test equipment with parameters equal to or better than those required to ensure that specified performance parameters are met. Test equipment used shall have first echelon certification directly traceable to the National Institute of Standards Technology (NIST) or other AFMETCAL-approved equivalent international laboratory. Tests will be performed to ensure that the item meets the requirements of this purchase description. Such testing at destination does not relieve the contractor of

Rev. 3 performing all inspections and quality checks at the point of manufacture as necessary to assure performance as specified herein.

Attachment:

1) Data Requirements

Attachment to

Purchase Description 16M-263A-DI

Height Measuring Instrument

DATA REQUIREMENTS

MANUALS: A complete user and service manual and calibration procedure shall be provided with each unit in contractor format. Manuals shall be on CD/DVD-ROM in Indexed Portable Document Format

(iPDF). The manuals shall comply with Data Item Description (DID) DI-TMSS-80527C and the Contract

Data Requirements List (DD Form 1423).