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DM-634C Oxygen Sensor Assembly

DM-634C O2 Sensor Instruction Manual

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Содержание MicroSafe DM-634C

Страница 1: ...Deficiency Sensor 0 25 O2 Operator s Installation and Instruction Manual DETCON Inc 4055 Technology Forest Blvd Suite 100 The Woodlands Texas 77381 Ph 281 367 4100 Fax 281 298 2868 www detcon com Augu...

Страница 2: ...DM 634C Oxygen Sensor Assembly DM 634C O2 Sensor Instruction Manual ii This page left intentionally blank...

Страница 3: ...tment 6 3 4 7 Calibration Level Adjustment 6 3 5 Installation 6 3 5 1 Field Wiring Table 4 20 mA output 6 3 5 2 Sensor Location 7 3 5 3 Local Electrical Codes 7 3 5 4 Accessibility 8 3 5 5 Installatio...

Страница 4: ...nting Dimensions 9 Figure 8 Sensor Connector PCB 10 Figure 9 Control Circuit 11 Figure 10 Control Circuit 11 Figure 11 Magnetic Programming Tool 14 Figure 12 Programming Locations 15 Figure 13 Spare p...

Страница 5: ...microprocessor supervised electronics are packaged as a plug in module that mates to a standard connector board Both are housed in an explosion proof condulet that includes a glass lens window which...

Страница 6: ...cation port and a linear 4 20 mA DC output Figure 2 Microprocessor Control Circuit 3 0 3 Base Connector Board The base connector board is mounted in the explosion proof enclosure and includes the mati...

Страница 7: ...m level adjustments can be accomplished without removing the cover or declassifying the area Electrical classification is Class I Groups B C D Div 1 Figure 4 Explosion proof enclosures 3 1 Principle o...

Страница 8: ...nd perimeter mounting are typically used to determine number and location of sensors The sensors are generally located 2 4 feet above grade 3 2 2 Interference Data Table 1 Interference Data Methane 10...

Страница 9: ...3 4 7 for details AUTO SPAN 3 4 3 Program Mode The program mode provides a program status menu and allows for the adjustment of alarm set point levels and the programming of the calibration gas level...

Страница 10: ...of ambient air gas sensor devices is directly relative to proper location and installation practice 3 5 1 Field Wiring Table 4 20 mA output Detcon MicroSafe O2 sensor assemblies require three conduct...

Страница 11: ...s may either fail or wear Other leak sources are best determined by facility engineers with experience in similar processes Ventilation Normal ventilation or prevailing wind conditions can dictate eff...

Страница 12: ...hall be placed within 18 of the enclosure Crouse Hinds type EYS2 EYD2 or equivalent are suitable for this purpose 3 5 5 Installation Procedure a Remove the junction box cover and un plug the control c...

Страница 13: ...ure 9 Alarm 1 and Alarm 2 have three jumper programmable functions latching non latching relays normally energized normally de energized relays and ascending descending alarm set points The fault alar...

Страница 14: ...relay will be in the energized mode The energized mode will energize or activate the alarm relay when there is no alarm condition and de energize or de activate the alarm relay when there is an alarm...

Страница 15: ...e amp board see Figure 10 There are 256 different ID numbers available which are based on the hexadecimal numbering system If RS 485 communications are used each sensor must have its own unique ID num...

Страница 16: ...147 9 3 190 B E 233 E 9 19 1 3 62 3 E 105 6 9 148 9 4 191 B F 234 E A 20 1 4 63 3 F 106 6 A 149 9 5 192 C 0 235 E B 21 1 5 64 4 0 107 6 B 150 9 6 193 C 1 236 E C 22 1 6 65 4 1 108 6 C 151 9 7 194 C 2...

Страница 17: ...O2 gas sensors are pre calibrated prior to shipment and will in most cases not require significant adjustment on start up However it is recommended that a complete calibration test and adjustment be p...

Страница 18: ...h is the normal atmospheric concentration Other concentrations may be used as long as they fall within 15 0 to 25 0 O2 However any alternate span gas concentration value must be programmed via the cal...

Страница 19: ...icate the actual concentration requested g Apply the calibration test gas at a flow rate of 500 milliliters per minute If the calibration gas level is set at 20 9 and ambient air is verified to be 20...

Страница 20: ...et Cal Level b Next scroll to the VIEW PROG STATUS listing and then hold the programming magnet over PGM 1 for 3 seconds The menu will then automatically scroll at five second intervals through the fo...

Страница 21: ...30 seconds c ALARM 2 LEVEL From the programming menu scroll to the alarm 2 level listing The menu item appears as SET ALARM 2 LEVEL Enter the menu by holding the programming magnet stationary over PG...

Страница 22: ...25 or less remains the sensor cell should be replaced within a reasonable maintenance schedule 3 11 RS 485 Protocol Model TP 624C MicroSafe sensors feature Modbus compatible communications protocol a...

Страница 23: ...larm Register High Byte Low Byte 40005 Status Bits Status Bits High Byte Bit 7 Not used always 0 Bit 6 Not used always 0 Bit 5 Not used always 0 Bit 4 Not used always 0 Bit 3 1 Unit is in calibration...

Страница 24: ...100 Reg40005 Data Hi 05 5 0000 0101 Reg40005 Data Lo 50 80 0101 0000 CRC CRC Additional Notes The calibration LED will light when the transmitter is sending a response to a Master Query Communications...

Страница 25: ...ter re initialization Non readable Display 1 If display has blue background when hot install sunshade to reduce temperature 2 If poor contrast adjust contrast pot accordingly Nothing Displayed Transmi...

Страница 26: ...rcuit Sensor Head Wiring Connection Sensor Head Wiring Connection Sensor Head Wiring Connection Sensor Head Wiring Connection 24VDC Power IN Common DC Power IN 4 20 mA Output Customer Supplied Wiring...

Страница 27: ...hnology Forest Blvd Suite 100 The Woodlands Texas 77381 for necessary repairs or replacement 3 16 Service Policy Detcon Inc as manufacturer warrants under intended normal use each new MicroSafe plug i...

Страница 28: ...ALARM 1 SET ALM1 inc 485 ID SET SET ALARM 2 dec inc LEGEND PGM1 Program Switch Location 1 PGM2 Program Switch Location 2 M Momentary pass of magnet 3 3 second hold of magnet 30 30 second of magnet inc...

Страница 29: ...nges made Approvals 065 06 18 09 Last release BM 066 08 02 18 Updated Conduit Seal in Section 3 5 4 MM Shipping Address 4055 technology Forest Blvd Suite 100 The Woodlands Texas 77381 Mailing Address...