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Accreditation & Certification

A2LA Accreditation

The American Association for Laboratory Accreditation (A2LA) is a nonprofit, non-governmental, public service, membership society. The mission of A2LA is to provide comprehensive services in laboratory accreditation and laboratory-related training. Laboratories are accredited in the following fields: Acoustics & Vibration, Biological, Calibration, Chemical, Construction Materials, Electrical, Environmental, Geotechnical, Mechanical, Nondestructive, and Thermal. In addition to these broad fields, specifically-tailored programs are available for animal drugs, automotive electromagnetic compatibility (EMC), environmental lead (Pb), fertilizers, food testing, and putting green materials testing. Aldinger's scope identifies the specific testing or calibration capabilities for which we are accredited.

Dallas, TX Lab - A2LA Accreditation

Go to: Little Rock, AR Lab - A2LA Accreditiation »

View our Official A2LA Scope and Certificate
Visit the A2LA website

Dimensional

Electrical

Mechanical

Thermodynamic

Time & Frequency

SCOPE OF ACCREDITATION TO ISO/IEC 17025:2005 & ANSI/NCSL Z540-1-1994

ALDINGER COMPANY
1440 Prudential Drive
Dallas, TX 75235
Timothy R. Detten    Phone: 214 638 1808

Valid To: June 30, 2020

Certificate Number: 1509.01

In recognition of the successful completion of the A2LA evaluation process, accreditation is granted to this laboratory to perform the following calibrations1:

DIMENSIONAL
Parameter/Equipment Range CMC 2, 4 (±) Comments
Calipers3, 5 Up to 24 in 0.6R Gage blocks (field)
  (24 to 48) in 1100 µin  
       
  Up to 48 in (48 to 96) in 0.6R Gage blocks (lab)
  (48 to 96) in 1500 µin  
Dial and Test Indicators3,5 Up to 3 in 99 µin Gage blocks, ULM, SuperMic10
Gage Blocks Up to 1 in (2.6 + 1.5L) µin

 Master gage block set, Federal 130B-24 comparator
  (2 to 4) in (4.1 + 1.5L) µin  
       
  (4 to 20) in (6.7 + 1.9L) µin Maser gage block set, ULM
Height Gages3, 5 Up to 36 in 0.6R Gage blocks
Length Standards Up to 18 in (37 + 1.5L) µin ULM/SuperMic 10, gage blocks
  Up to 48 in (65 + 1.5L) µin  
Parameter/Equipment Range CMC2, 4 (± ) Comments
Levels Up to 0.0001 in 0.67 DIV Surface plate, granite square
Micrometers 3, 5 Up to 4 in
33 µin
 Gage blocks (field)
  (4 to 24) in 0.6R  
  (24 to 48) in 1100 µin  
       
  Up to 48 in 0.6R Gage blocks (lab)
  (48 to 96) in 1500 µin  
Plain Ring Gages (0.125 to 12) in (22 + 1.5L ) µin ULM, gage blocks
Protractors (0 to 90)° 0.049° Surface plate, angle blocks
Thread Plugs      
Pitch Diameter (0.040 to 12) in (69 + 1.5L) µin Three-wire method, direct measure
Major Diameter (0.040 to 12) in (18 + 1.5L) µin  
       
Pitch Diameter (Taper) (0.040 to 12) in (75 + 1.5L) µin Two-wire method, direct measure
Thread Rings      
Pitch Diameter Up to 3.125 in 250 µin Setting plug
       
Taper Thread Rings      
Pitch Diameter Up to 3 in 120 µin Setting plug, standoff to master
Thread Wires (4 to 80) TPI (11 + 1.5L) µin Master thread wire set
Surface Plates3,5 (1.5 X 1.5) to (4 X 8) ft 31 µin Repeat reading gage
       
Indicator Stands (Up to 12 X 12) in 45 µin Repeat reading gage, triangular gage block base
       
  (Up to 12 X 12) in 580 µin Indicator, triangular gage block base
Parameter/Equipment Range CMC2,4(±) Comments
Optical Comparators3,5      
X-Axis Up to 12 in (250 + 91L) µin Glass scale
Y-Axis Up to 12 in (250 + 91L) µin  
Angle (0 to 90)° 0.029° Angle blocks
Rulers3,5 Up to 40 in 0.013 in Standard ruler
       
Tape Measures3,5 Up to 40 in 0.013 in Standard ruler
  Up to 100 ft 0.062 in Standard tape
       
PI Tapes3,5 Up to 72 in 910 µin Gage blocks
Radius Gages Up to 0.75 in 1300 µin Optical comparator and overlay
Angle Gages Up to 180° 0.044° Optical comparator and vernier
Torque Arms Up to 24 in 0.0047 in Height gage, test indicator
       
  Up to 48 in 0.003 in Gage blocks

ELECTRICAL - DC/Low Frequency
Parameter/Range Frequency CMC2, 7, 9 (± ) Comments
AC Current - Measure
      
A 1 60 Hz to 1 kHz 0.1 % + 0.4 mA HP 34401
A 3   0.1 % + 1.8 mA  
Parameter/Range Frequency CMC 2, 6, 7, 9 ( ± ) Comments
AC Current - Generate      
(32 to 320) µA
320 µA to 3.2 mA		 60 Hz to 3 kHz 0.072 % + 0.9 µA
0.07 % + 0.6 µA		 Wavetek 9100
(3.2 to 32) mA   0.07 % + 3.2 µA  
(32 to 320) mA   0.083 % + 32 µA  
320 mA to 3.2 A   0.1 % + 480 µA  
(3.2 to 10) A   0.21 % + 3 mA  
       
(3.2 to 32) A (60 to 100) Hz 0.2 % + 5.5 mA 10 turn coil
  (100 to 440) Hz 0.78 % + 27 mA  
       
(32 to 200) A (60 to 100) Hz 0.21 % + 90 mA  
  (100 to 440) Hz 0.67 % + 0.25 A  
       
(16 to 160) A (60 to 100) Hz 0.21 % + 28 mA  
       
(160 to 1000) A (60 to 100) Hz 0.21 % + 0.45 A 50 turn coil
AC Voltage - Generate      
(32 to 320) mV
320 mV to 3.2 V		 60 Hz to 3 kHz 0.041 % + 20 µV
0.041 % + 200 µV		 Wavetek 9100
(3.2 to 32) V   0.041 % + 2.0 mV  
(32 to 105) V   0.043 % + 6.3 mV  
       
(105 to 320) V 60 Hz to 1 kHz 0.066 % + 20 mV  
  (1 to 3) kHz 0.09 % + 20 mV  
       
(320 to 800) V (60 to 100) Hz 0.079 % + 63 mV  
  (1 to 3) kHz 0.1 % + 63 mV  
AC Voltage - Measure      
100 mV
1 V		 60 Hz to 3 kHz 0.065 % + 40 µV
0.064 % + 300 µV		 HP 34401
10 V   0.064 % + 3 mV  
100 V   0.064 % + 30 mV  
750 V   0.064 % + 230 mV  
       
Up to 10 kV   0.14 % + 100 mV Vitrek 4700
Parameter/Equipment Range CMC2, 6, 7, 9 (± ) Comments
Capacitance - Generate      
Low (0.5 to 4) nF 0.61 % + 15 pF
Wavetek 9100
  (4 to 40) nF 0.6 % + 60 pF  
  (40 to 400) nF 0.61 % + 320 pF  
  400 nF to 4 µF 0.8 % + 3.2 nF  
       
High (4 to 40) µF 1 % + 32 nF  
  (40 to 400) µF 1 % + 320 nF  
  400 µF to 4 mF 1 % + 3.2 mF  
  (4 to 40) mF 2 % + 120 mF  
DC Current - Generate (0 to 320) µA
320 µA to 3.2 mA		 0.014 % + 11 nA
0.014 % + 83 nA		 Wavetek 9100
  (3.2 to 32) mA 0.014 % + 900 nA  
  (32 to 320) mA 0.016 % + 9.6 µA  
  320 mA to 3.2 A 0.06 % + 120 µA  
  (3.2 to 11) A 0.057 % + 940 µA  
       
  (3.2 to 32) A 0.19 % + 1.2 mA 10 turn coil
  (32 to 100) A 0.072 % + 9.4 mA  
  (100 to 160) A 0.068 % + 45 mA  
       
  (160 to 520) A 0.056 % + 47 mA 50 turn coil
  (520 to 1000) A 0.055 % + 230 mA  
DC Current - Measure, Fixed Points 10 mA 0.076 % + 6 µA HP 34401
  100 mA 0.05 % + 5 µA  
  1 A 0.1 % + 100 µA  
  3 A 0.14 % + 600 µA  
DC Voltage - Generate (0 to 320) mV 0.0063 % + 4.2 µV Wavetek 9100
  320 mV to 3.2 V 0.0062 % + 42 µV  
  (3.2 to 32) V 0.0066 % + 420 µV  
  (32 to 320) V 0.0069 % + 4.5 mV  
  (320 to 1050) V 0.0084 % + 20 mV  
DC Voltage - Measure, 100 mV 0.0055 % + 3.5 µV HP 34401
Fixed Points 1 V 0.0042 % + 7 µV  
  10 V 0.0036 % + 50 µV  
  100 V 0.0047 % + 600 µV  
  1000 V 0.0047 % + 10 mV  
       
  Up to 10 kV 0.071 % + 30 mV Vitrek 4700
Parameter/Equipment Range CMC2, 6, 7, 9 (± ) Comments
Electrical Calibration of Temperature Controllers 3, 5 (-200 to 1371)° C 0.56 °C Omega CL27
Resistance - Generate (0 to 40)W 0.11 % + 50 mW Wavetek 9100
  (40 to 400) Ω 0.051 % + 100 mΩ  
  (0.4 to 4) kΩ 0.037 % + 200 mΩ  
  (4 to 40) kΩ 0.052 % + 2 Ω  
  (40 to 400) kΩ 0.053 % + 20 Ω  
  (0.4 to 4) MΩ 0.049 % + 200 Ω  
  (4 to 40) MΩ 0.15 % + 2 kΩ  
  (40 to 400) MΩ 0.14 % + 40 kΩ  
Resistance - Measure, 100 Ω 0.01 % + 4 mΩ HP 34401
Fixed Points 1 kΩ 0.01 % + 10 mΩ  
  10 kΩ 0.01 % + 100 mΩ  
  100 kΩ 0.01 % + 1 Ω  
  1 MΩ 0.01 % + 10 Ω  
  10 MΩ 0.04 % + 100 Ω  
  100 MΩ 0.8 % + 10 kΩ  
RTD Simulation -      
PT385, 100 Ω (-200 to -100)°C 0.26 °C Wavetek 9100
  (-100 to 100) °C 0.17 °C  
  (100 to 630)°C 0.35 °C  
  (630 to 850)°C 0.53 °C  
Thermocouple Simulation -      
Type E (-250 to -200) °C 0.45 °C Wavetek 9100
  (-200 to -100) °C 0.23 °C  
  (-100 to 100) °C 0.18 °C  
  (100 to 1000) °C 0.22 °C  
       
Type J (-210 to -100) °C 0.26 °C  
  (-100 to 800) °C 0.20 °C  
  (800 to 1000) °C 0.22 °C  
  (1000 to 1200) °C 0.24 °C  
Parameter/Equipment Range CMC2, 6, 9 (± ) Comments
Thermocouple Simulation      
- (cont)      
Type K (-250 to -200) °C 0.57 °C Wavetek 9100
  (-200 to -100) °C 0.28 °C  
  (-100 to 100) °C 0.20 °C  
  (100 to 600) °C 0.24 °C  
  (600 to 1372) °C 0.28 °C  
       
Type T (-250 to -200) °C 0.59 °C  
  (-200 to -100) °C 0.28 °C  
  (-100 to 0) °C 0.23 °C  
  (0 to 400) °C 0.18 °C  
Thermocouple - Measure      
Type E (-270 to -100) °C 0.51 °C Martel 3001
  (-100 to -25) °C 0.21 °C  
  (-25 to 650) °C 0.19 °C  
  (650 to 1000) °C 0.23 °C  
       
Type J (-210 to -100) °C 0.29 °C  
  (-100 to -30) °C 0.23 °C  
  (-30 to 760) °C 0.20 °C  
  (760 to 1200) °C 0.25 °C  
       
Type K (-270 to -100) °C 0.34 °C  
  (-100 to -25) °C 0.24 °C  
  (-25 to 120) °C 0.29 °C  
  (120 to 1000) °C 0.28 °C  
  (1000 to 1372) °C 0.41 °C  
       
Type T (-270 to -150) °C 0.64 °C  
  (-150 to 0) °C 0.26 °C  
  (0 to 400) °C 0.19 °C  
Welding Devices (0 to 350) Amps DC 0.87 ADC Load bank, current shunt, DMM
  (0 to 100) Volts DC 0.012 VDC  
  (100 to 700) Feed Rate IPM 3.6 IPM  

MECHANICAL
Parameter/Equipment Range8 CMC2 (±) Comments
Balances3,5     Handbook 44:
  (0 to 20) g 0.11 mg Class 1 weights
  (0 to 200) g 0.69 mg  
       
  (0 to 200) g 1.3 mg Class 2 weights
  (0 to 1000) g 6.6 mg  
  (0 to 5000) g 34 mg  
       
  (0 to 20) g 0.81 mg Class 4 weights
  (0 to 200) g 4.8 mg  
  (0 to 1000) g 24 mg  
  (0 to 5000) g 130 mg  
  (0 to 10 000) g 370 mg  
  (0 to 20 000) g 460 mg  
Force - Universal Testing Machines3,5      
Tension/Compression (0 to 100) lbf 0.0064 lbf
 Class F weights w/ load cells
       
Compression (100 to 1000) lbf 0.26 % Indication  
  (1000 to 10 000) lbf 0.24 % Indication  
  (10 000 to 50 000) lbf 0.33 % Indication  
  (10 000 to 100 000) lbf 1.6 % Indication  
  (50 000 to 500 000) lbf 0.4 % Indication  
       
Tension (100 to 1000) lbf 0.23 % Indication  
  (1000 to 10 000) lbf 0.23 % Indication  
  (10 000 to 50 000) lbf 0.29 % Indication  
Mass, Fixed Points 1 mg 2.2 µg Modified double substitution
  2 mg 2.1 µg  
  5 mg 2.9 µg  
  10 mg 1.4 µg  
  20 mg 1.5 µg  
  30 mg 2.2 µg  
  50 mg 1.6 µg  
  100 mg 1.7 µg  
  200 mg 1.6 µg  
  300 mg 1.6 µg  
  500 mg 2.1 µg  
  1 g 11 µg  
  2 g 3.3 µg  
  5 g 5.7 µg  
  10 g 7.2 µg  
Parameter/Equipment Range8 CMC2 (±) Comments
Mass, Fixed Points (cont) 20 g 13 µg Modified double substitution
  50 g 11 µg  
  100 g 39 µg  
  200 g 140 µg  
  500 g 320 µg  
  1 kg 390 µg  
  2 kg 1.7 mg  
  5 kg 2.6 mg  
       
  10 kg 93 mg Direct comparison
  20 kg 94 mg  
       
  0.8859 g (1/32 oz) 12 µg  
  1.772 g (1/16 oz) 94 µg  
  3.544 g (1/8 oz) 240 µg  
  7.087 g (1/4 oz) 170 µg  
  14.17 g (1/2 oz) 170 µg  
  28.35 g (1 oz) 370 µg  
  56.7 g (2 oz) 150 µg  
  113.4 g (4 oz) 740 µg  
  226.8 g (8 oz) 5.1 mg  
       
  0.4536 g (0.001 lb) 130 µg  
  0.9072 g (0.002 lb) 56 µg  
  2.27 g (0.005 lb) 26 µg  
  4.54 g (0.01 lb) 16 µg  
  9.07 g (0.02 lb) 56 µg  
  22.68 g (0.05 lb) 79 µg  
  45.36 g (0.1 lb) 37 µg  
  90.72 g (0.2 lb) 87 µg  
       
  453.6 g (1 lb ) 3.8 mg  
  907.2 g (2 lb) 7.9 mg  
  2267.96 g (5 lb) 8.3 mg  
  4535.9 g (10 lb) 7.4 mg  
  9071.8 g (20 lb) 94 mg  
  22 679.62 g (50 lb) 95 mg  
  45 359.237 g (100 lb) 0.43 g  
  90 718.475 g (200 lb) 0.43 g  
  226 796.185 g (500 lb) 0.45 g  
  453 592.37 g (1000 lb) 0.47 g  
Pipettes3,5 (1 to 50) µL 0.31 µL Gravimetric method
  (50 to 100) µL 0.6 µL  
  (100 to 500) µL 1.3 µL  
  (500 to 1000) µL 2.2 µL  
  (1000 to 5000) µL 12 µL  
  (5000 to 10 000) µL 18 µL  
Parameter/Equipment Range CMC2,9 (±) Comments
Optical Tachometer3, 5 200 FPM 1.3 FPM Calibrated strobe
  3000 FPM 1.7 FPM  
  29 999 FPM 3.9 FPM  
Pressure Gages, Transducers and Transmitters3,5 (0 to 30 000) psig 43 psig Additel digital test gauge
       
  (0 to 10 000) psig 12 psig Crystal XP2 digital test gauge
  (0 to 3000) psig 3.8 psig  
       
  (0 to 5000) psig 3.9 psig Druck/Martel transducer
  (0 to 300) psig 0.18 psig  
       
  (0 to 2) in H2O 0.0026 in H2O Dwyer hook gage
Scales3,5     Handbook 44:
  (0 to 10) lb 0.000 25 lb Class 4 weights
  (0 to 20) lb 0.000 25 lb  
       
  (0 to 50) lb 0.0063 lb Class F weights
  (0 to 100) lb 0.0063 lb  
  (0 to 200) lb 0.0064 lb  
  (0 to 500) lb 0.0064 lb  
  (0 to 1000) lb 0.18 lb  
  (0 to 5000) lb 0.19 lb  
  (0 to 20 000) lb 0.21 lb  
Torque Wrenches3,5 (1 to 50) in×lbf 0.17 in×lbf CDI/Norbar torque calibrator
  (30 to 400) in×lbf 1.8 in×lbf  
  (80 to 1000) in×lbf 5.1 in×lbf  
  (240 to 3000) in×lbf 21 in×lbf  
     
  (1200 to 6000) in×lbf 23 in×lbf Norbar torque calibrator
  (2400 to 12 000) in×lbf 58 in×lbf  
Torque Transducers Up to 200 in×lbf 0.10% Torque arm and weights
  Up to 1200 in×lbf 0.09%  
  Up to 12 000 in×lbf 0.10 %  
Parameter/Equipment Range CMC2 (±) Comments
Vacuum Gauges3,5 (0 to 15) psig 0.03 psig Druck DPI 610
Rotations Speed Measurement Contact:    
  200 RPM 1.5 RPM Monarch PLT200
  3000 RPM 2.4 RPM  
  20 000 RPM 11 RPM  
       
  Optical:    
  3000 RPM 1.3 RPM  
  30 000 RPM 3.3 RPM  

THERMODYNAMIC
Parameter/Equipment Range CMC 2 ( ±) Comments
Temperature - Measuring Equipment3, 5 (30 to 300) °C 0.09 ° C Hart 1502A/5628
  (86 to 572) °F 0.16 °F PRT in dry block
Temperature - Measuring Equipment (-40 to 200) °C 0.061 °C Hart 1502A/5628
  (-40 to 392) °F 0.11 °F PRT in wet bath, in lab only
Temperature -Measure3, 5 (-100 to 600) °C 0.64 °C Fluke 51 with thermocouple
  (-148 to 1112) °F 1.2 °F  
       
  (600 to 1200) °C 1.1 °C  
  (1112 to 2192) °F 2.0 °F  
IR Thermometer3,5 (-20 to 150) °C 0.33 °C Mikron M340 (lab only)
       
  (Amb + 10 to 400) °C 1.8 °C Omega BB703
Humidity - Measure3, 5 (10 to 90) % RH 3.0 % RH Sensor Scientific B13-200

TIME & FREQUENCY
Parameter/Equipment Range CMC2, 7 (±) Comments
Frequency - Measure 40 Hz to 300 kHz 0.014 % Indication HP 34401
Timers and Stopwatches3, 5 < 1 hr 0.14 s/24 hr Reference stopwatch
  ≥ 1 hr 0.59 s/24 hr  

1 This laboratory offers commercial calibration service and field calibration service.

2 Calibration and Measurement Capability Uncertainty (CMC) is the smallest uncertainty of measurement that a laboratory can achieve within its scope of accreditation when performing more or less routine calibrations of nearly ideal measurement standards or nearly ideal measuring equipment. Calibration and Measurement Capabilities represent expanded uncertainties expressed at approximately the 95 % level of confidence, usually using a coverage factor of k = 2. The actual measurement uncertainty of a specific calibration performed by the laboratory may be greater than the CMC due to the behavior of the customer’s device and to influences from the circumstances of the specific calibration.

3 Field calibration service is available for this calibration and this laboratory meets A2LA R104 – General Requirements: Accreditation of Field Testing and Field Calibration Laboratories for these calibrations. Please note the actual measurement uncertainties achievable on a customer's site can normally be expected to be larger than the CMC found on the A2LA Scope. Allowance must be made for aspects such as the environment at the place of calibration and for other possible adverse effects such as those caused by transportation of the calibration equipment. The usual allowance for the actual uncertainty introduced by the item being calibrated, (e.g. resolution, repeatability) must also be considered and this, on its own, could result in the actual measurement uncertainty achievable on a customer’s site being larger than the CMC.

4 In the statement of CMC, L is the numerical value of the nominal length of the device measured in inches and R is the numerical value of the resolution of the device in microinches unless otherwise noted.

5 The CMC stated for calibrations performed in the laboratory is applicable for calibrations performed in the field.

6 CMC for the Wavetek 9100A is based on 1-year specifications within a temperature range of 23 °C ± 5 °C. Field calibrations will be performed within 23 °C ± 5 °C.

7 CMC for the HP 34401 is based on 1-year specifications within a temperature range of 18 °C to 28 °C. Field calibrations will be performed within 18 °C to 28 °C, 30 % to 55 % humidity.

8 Where ranges are not specified, the CMC stated is for the cardinal points only.

9 In the statement of CMC, percentage (%) refers to percent of reading, unless otherwise noted.

10 "SuperMic" is a registered trade mark with a last listed owner of Pratt & Whitney Measurement Systems, Inc., Connecticut U.S.A.

(A2LA Cert. No. 1509.01) Revised 5/20/2016

This is a marketing version of the official A2LA Scope of Accreditation. It has been modified from the official version to contain the logo of the accredited organization and this modification has been approved by A2LA. The content of the Scope itself has not been altered. The official version of the Scope of Accreditation may be found at: https://www.a2la.org/scopepdf/1509-01.pdf

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