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DAT420_MAN02_EN.docx • V1R1

ii

DAT 420

Document :

DAT420_MAN02_EN.DOCX

Version :

V1R1

Date :

11/07/2011

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Summary of Contents for DAT 420

Page 1: ...TOXIC GAS AND OXYGEN DETECTOR DAT 420 CALIBRATION MANUAL...

Page 2: ...ntenance attempts carried out without observing the procedures described in this manual or without the assistance of our after sales service may prevent the equipment from working properly and consequ...

Page 3: ...DAT420_MAN02_EN docx V1R1 ii DAT 420 Document DAT420_MAN02_EN DOCX Version V1R1 Date 11 07 2011...

Page 4: ...1 7 TROUBLESHOOTING 12 8 ACCESSORIES AND SPARE PARTS 12 ILLUSTRATIONS AND TABLES Figure 1 Exploded view of the detector 3 Figure 2 Calibration mask 4 Figure 3 Measurement probes 4 Figure 4 Power suppl...

Page 5: ...invalidate the essential safety requirements of the whole plant No additional drilling is allowed on the junction box The existing openings cannot be enlarged No additional terminal can be installed o...

Page 6: ...time T90 45 sec Expected operating life span 2 years Supply voltage 15 30 Vdc Supply current Max 30 mA Storage temperature 40 C to 80 C Operating conditions Temperature range Ambient humidity Intermi...

Page 7: ...emans Figure 1 Exploded view of the detector FLAMEPROOF d STOPPER PLUG SINTERED METAL FILTER SENSING HEAD BASE FPH01 STAINLESS STEEL FLAMEPROOF d JUNCTION BOX PRE00000033 BOI00000188 MEC00000010 VISVI...

Page 8: ...or PVC with approximately 4 mm interior diameter TUB00000009 A measurement probes set fitted with a connector with a pitch of 2 mm ACC00000012 see figure below A digital voltmeter A precision insulat...

Page 9: ...e to use the OctoPRO calibration unit to simulate the 4 20 mA current loop Contact Dalemans for further information The 4 20 mA current loop may also be simulated as follows 1 Power the detector from...

Page 10: ...ation consists of creating a calibration atmosphere around the sensing head by injecting a reference gas To avoid contamination of the calibration gas by the ambient atmosphere or air draughts always...

Page 11: ...essible through the slot in the side of the calibration mask Tighten down the locking screw on the calibration mask 6 Using the measurement probes Figure 3 Page 4 connect the voltmeter across the conn...

Page 12: ...to 3 minutes 5 On the transmitter adjust the ZERO potentiometer figure below to obtain 40 mV 0 1 mV on the voltmeter Figure 7 Calibration for toxic gases 6 Stop applying nitrogen and wait until the 40...

Page 13: ...300 20 00 200 00 13 60 136 00 8 80 88 00 4 96 49 60 500 20 00 200 00 12 00 120 00 5 60 56 00 1000 20 00 200 00 7 20 72 00 2000 10 40 104 00 9 On the control unit PLC to which the detector is connecte...

Page 14: ...n remove the calibration mask and leave the sensor in free air for 5 to 10 minutes so that the 40 200 mV output signal stabilises completely 8 Adjust the GAIN potentiometer figure below to obtain a re...

Page 15: ...tor 0 500 4 Diborane B2H6 0 300 2 Fluorine F2 Calibration with Cl2 generator Hydrazine N2H4 Gaseous permeation 5 Hydrochloric acid HCl 0 300 3 Hydrocyanic acid HCN 0 250 1 Hydrofluoric acid HF 0 500 5...

Page 16: ...OUT00000089 Hose PVC 4 mm TUB00000009 Key for locking screw 1 5 mm hex key OUT00000115 Measurement probes Pitch 2 mm ACC00000012 Spanner for the base of the sensing head 30 mm OUT00000114 Spanner for...

Page 17: ...DALEMANS s a Rue Jules M lotte 27 B 4350 Remicourt Tel 32 0 19 54 52 36 Fax 32 0 19 54 55 34 info dalemans com www dalemans com...

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