Certificates Belarus Certificate N8414. Registered in the State Register of measuring instruments under the number RB 03 04 1992 13 Belarus Certificate of Quality Management System STB ISO 9001-2015 Kazahstan Certificate N9586. Registered in the State Register of measuring instruments under the number KZ.02.03.05344-2013/RB 03 04 1992 13 Russia Certificate BY.C.30.999.A N53157. Registered in the State Register of measuring instruments under the number 26817-13 Manuals Operating manual TNIV.406233.002 RE. Pressure Converters NT (Russian language) Verifications