Certificate of Accreditation

PERRY JOHNSON LABORATORY ACCREDITATION, INC. Certificate of Accreditation Perry Johnson Laboratory Accreditation, Inc. has assessed the Laboratory of: (Hereinafter called the Organization) and hereby declares that Organization is accredited in accordance with the recognized International Standard: ISO/IEC 17025:2005 This accreditation demonstrates technical competence for a defined scope and the operation of a laboratory quality management system (as outlined by the joint ISO-ILAC-IAF Communiqué dated January 2009): Dimensional, Mechanical, Thermodynamic, Electrical, Mass, Force and Weighting Devices Calibration (As detailed in the supplement) Accreditation claims for such testing and/or calibration services shall only be made from addresses referenced within this certificate. This Accreditation is granted subject to the system rules governing the Accreditation referred to above, and the Organization hereby covenants with the Accreditation body s duty to observe and comply with the said rules. For PJLA: Initial Accreditation Date: Issue Date: Expiration Date: Tracy Szerszen President/Operations Manager Perry Johnson Laboratory Accreditation, Inc. (PJLA) 755 W. Big Beaver, Suite 1325 Troy, Michigan 48084 January 31, 2017 January 31, 2017 March 30, 2019 Revision Date: Accreditation No. Certificate No.: January 20, 2018 88795 L17-41-R1 The validity of this certificate is maintained through ongoing assessments based on a continuous accreditation cycle. The validity of this certificate should be confirmed through the PJLA website: www.pjlabs.com Page 1 of 6

Dimensional Caliper FO 1.5 mm to 600 mm (12.1 + 3.5 x 10-3 L) µm NMX-CH-002 Block Set Gage, Grade 0 or 1 and Step Master Outside Micrometer FO 1.5 mm to 300 mm (7.18 x 10-1 + 8.94 x 10-3 L) µm NMX-CH-036- Set Block, Gage Grade 0 or 1 Height Gage FO 1.5 mm to 600 mm (13.6 + 5 x 10-3 L) µm NMX-CH-141 Master Block 0 or 1 Height Master Mitutoyo Indicator FO 1.5 mm to 50 mm (7.9 + 1.04 x 10-3 L) µm NMX-CH-036- Set Block, Gage Grade 0 or 1 Gas Detector (Explosimeter )FO Angle Calibration FO 0 to 90 (4 quadrants) 0.1 cmol/mol to 2.5 cmol/mol 2 % of reading Reference Material Methane 15 % LEL Methane 50 % LEL Nitrogen 99.99 % Vol. 0.3 Pittsburg VDI/VDE 2648 Part1 Mechanical Pressure Gauges FO Pressure Cell FO Differential Pressure FO Torque Meter FO 0 psi to 5 400 psi (0 MPa to 37.22 MPa) 0 psi to 9 psi (0 MPa to 0.062 MPa) 0 psi to -900 psi (0 MPa to 6.2 MPa) -2 psi to 2 psi (-13.79 kpa to 13.73 kpa) 0.1 % of reading Kobold Manometer NMX-CH-003-SCFI- Valid. NOM-013-SCFI-Valid 0.1 % of reading Hathaway NMX-CH-003-SCFI- 0.1 % of reading Valid NOM-013-SCFI-Valid 0.014 psi Extech HD700 NMX-CH-003- SCFI- Valid I NOM-013-SCFI- Valid 0.68 % of reading American ASME B107.300- Valid 147.6 lbf ft to 738 lbf ft (200 Nm to 1 000 Nm) 12 lb in to 240 lb in 0.25 % of reading Urrea ASME B107.300-Valid Issue: 01/2017 This supplement is in conjunction with certificate #L17-41-R1 Page 2 of 6

Mechanical Torque FO 35 lbf ft to 145 lbf ft (47.45 Nm to 196.6 Nm) 0 lbf in to 200 lbf in (0 Nm to 22.6 Nm) 0.34 % of reading Power Built ASME B107.300- Valid 0.34 % of reading Snap-on ASME B107.300 - Valid Mass, Force and Weighting Devices Scales F 0.01 kg to 50 kg (Res.= 0.001 kg) 0.02 kg to 100 kg 3 g 5 g NOM-010-SCFI-1994; NMX-CH- 009-SCFI-1994 Master Weights Class M1 (Res.= 0.002 kg) 0.05 kg to 800 kg 7 g (Res.= 0.005 kg) Electronic Balance F 1 mg to 600 g 0.009 g Weight Class F2 NOM-010-SCFI-1994; NMX-CH- 009-SCFI-1994 Weights F 10 kg to 20 kg 0.33 g Weight Class M1 NOM-038 10 mg to 100 g 0.2 mg Weight Class M2 101 g to 500 g 0.058 g 501 g to 10 kg 0.17 g ABBA Method NOM-038 Thermodynamic Temperature Sensor Type K, J FO Bimetallic Thermometer FO -20 C to 1 300 C 0.57 C Thermocouple Type K Dry Well, Model: 602 and Make: Jofra NMX-CH-070-200 C to 1 300 C 0.57 C Fluke 51-II Thermowell NMX-CH-070 Issue: 01/2017 This supplement is in conjunction with certificate #L17-41-R1 Page 3 of 6

Electrical Certificate of Accreditation: Supplement RANGE OR NOMINAL DEVICE SIZE AS APPROPRIATE 200 mv to 2 V 8.3 µv/v + 3.5 µv Multifunction Calibration DC Voltage FO 2 V to 220 V 8.3 µv/v + 80 µv Transmille Model 3050A 220 V to 1 kv 8.8 µv/v + 0.5 mv AC Voltage At the listed frequencies of 60 Hz FO DC Current FO AC Current At the listed frequencies of 60 Hz FO Resistance FO Thermocouple Type B F Thermocouple Type C F Thermocouple Type E F Thermocouple Type J F Thermocouple Type K F Thermocouple Type L F 0 mv to 40 V 0.003 9 V Metratec Model PIC 500 200 mv to 2 V 72 μv/v + 0.6 μv Multifunction Calibration 2 V to 220 V 72 μv/v + 2 μv Transmille Model 3050A 220 V to 1 kv 77 μv/v + 140 mv 200 µa to 22 A 3.7 ma/a 200 µa to 2 A 0.19 ma 0 ma to 400 ma 0.009 9 ma Metratec Model PIC 500 0 MΩ to 100 MΩ 0.1 mω /Ω Multifunction Calibration Transmille Model 3050A 600 C to 1 820 C 0.45 C Electrical Simulation of Thermocouple Multifunction Calibration 10 C to 2 316 C 0.35 C -240 C to 1 000 C 0.3 C -200 C to 1 200 C 0.2 C -190 C to 1 370 C 0.2 C -200 C to 900 C 0.1 C Transmille Model EA001A Issue: 01/2017 This supplement is in conjunction with certificate #L17-41-R1 Page 4 of 6

Electrical Thermocouple Type N F Thermocouple Type R F Thermocouple Type S F Thermocouple Type T F Thermocouple Type U F Thermocouple Type J & K FO RANGE OR NOMINAL DEVICE SIZE AS APPROPRIATE -190 C to 1 300 C 0.3 C Electrical Simulation of Thermocouple Multifunction Calibration 0 C to 1 760 C 0.55 C 0 C to 1 760 C 0.55 C -240 C to 400 C 0.4 C -200 C to 600 C 0.15 C Transmille Model EA001A -200 C to 800 C 0.24 C Metratec Model PIC500 1. The CMC (Calibration and Measurement Capability) stated for calibrations included on this scope of accreditation represents the smallest measurement uncertainty attainable by the laboratory when performing a more or less routine calibration of a nearly ideal device under nearly ideal conditions. It is typically expressed at a confidence level of 95 % using a coverage factor k (usually equal to 2). The actual measurement uncertainty associated with a specific calibration performed by the laboratory will typically be larger than the CMC for the same calibration since capability and performance of the device being calibrated and the conditions related to the calibration may reasonably be expected to deviate from ideal to some degree. 2. The laboratories range of calibration capability for all disciplines for which they are accredited is the interval from the smallest calibrated standard to the largest calibrated standard used in performing the calibration. The low end of this range must be an attainable value for which the laboratory has or has access to the standard referenced. Verification of an indicated value of zero in the absence of a standard is common practice in the procedure for many calibrations but by its definition it does not constitute calibration of zero capacity. Issue: 01/2017 This supplement is in conjunction with certificate #L17-41-R1 Page 5 of 6

3. The presence of a superscript F means that the laboratory performs calibration of the indicated parameter at its fixed location. Example: Outside Micrometer F would mean that the laboratory performs this calibration at its fixed location. 4. The presence of a superscript FO means that the laboratory performs calibration of the indicated parameter both at its fixed location and onsite at customer locations. Example: Outside Micrometer FO would mean that the laboratory performs this calibration at its fixed location and onsite at customer locations. 5. Measurement uncertainties obtained for calibrations performed at customer sites can be expected to be larger than the measurement uncertainties obtained at the laboratories fixed location for similar calibrations. This is due to the effects of transportation of the standards and equipment and upon environmental conditions at the customer site which are typically not controlled as closely as at the laboratories fixed location. 6. The term L represents length in inches or millimeters as appropriate to the uncertainty statement. Issue: 01/2017 This supplement is in conjunction with certificate #L17-41-R1 Page 6 of 6