2-20 | Model 933S UV Analyzer
DQD 507 Rev. 2016-02-18 Page 1
Supplement to Certificate of Compliance
Certificate: 1031027 Master Contract: 164369 (048179_0_000)
The products listed, including the latest revision described below,
are eligible to be marked in accordance with the referenced Certificate.
Product Certification History
Project Date Description
70097231 2017-02-24
Updates to Report 1031027 for use with alternate potting material for
Communications port based on Report and Test Data provided by
Dekra,IECEx /ATEX Certificates.
70084489 2016-00-00 Update to report 1031027 to include the addition of certified varistors to AC
Power Distribution Board 100-1771 and PCB 300-9163.
2644032 2014-04-02 Update to report 1031027 to include optional Gas Group IIB+H2 based on
the previous projects test results. It also updates to 61010-1-12, 3rd Edition,
safety standard based on the 2nd Edition compliance.
2062671 2008-09-12 Update of report 1031027 to include digital display, IR sensor, TC sensor,
add a M25 entry & vent flame arrestor locations, alternate power supply,
typo corrections.
1385514 2003-02-13
Update to 1031027 to include alternate Micro-Interface Board, adding
optional certified. ASR900 probe, new power ratings.
1179252 2001-04-30 Upgrade of Optical Bench PCB to eliminate potential voltage spikes.
1031027 2000-03-17
Original Certification for Process Analyzer, Model 93X for use in Hazardous
Locations.Originally issued as 2500004397
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