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OPERATING MANUAL OXYGEN MONITORING SYSTEM

OMS 420

30

9.7.2

OMS420RT model remote transmitter (# 63467RT)

Pos. Description

1

Hose connection back purge air

2

Hose connection cal gas and back purge air

3

Probe tube (stainless or Inconel steel)

4

Flange DN65 PN6 or 4” ANSI 150

5 Probe

head

6

Calibration gas cylinder

7

Pressure regulator with flow volume control

8 Transmitter
9

Special connection cable (10 m or 30 m)

10

Compressed air or Nitrogen N2 (6 – 8 bar) supply

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Summary of Contents for OMS 420

Page 1: ...OPERATING MANUAL OXYGEN MONITORING SYSTEM OMS 420 www GlobalTestSupply com Find Quality Products Online at sales GlobalTestSupply com...

Page 2: ...packing material for use if the analyzer must be shipped in the future The products described in this manual are subject to continuous development and improvement and it is therefore ac knowledged tha...

Page 3: ...OMS420RT 63467RT 14 7 3 3 High temperature model OMS420HT 63467HT 15 7 4 Principle of flow guidance tube 16 7 5 Transmitter electronics 17 7 6 Manual calibration 18 7 7 Recommended calibration gas 18...

Page 4: ...CO cell setup by factory only 33 9 7 7 Adjustment O2 cell amplifier by factory only 34 9 7 8 Adjustment 4 mA 20 mA factory only 35 9 7 9 Calibration AIR 36 9 7 10 Calibration AIR GAS 36 9 7 11 CO cor...

Page 5: ...should be stored in a safe but accessible place This instruction manual should be delivered to the end user immediately upon delivery NOTICE It is prohibited to transfer part or all of this manual in...

Page 6: ...ually over the LEL low explosion level Power must always be provided to the probe even during boiler shut down to prevent the formation of condensate which can damage the sensors Do not use the probe...

Page 7: ...y micro controller based transmitter electronics and converted into a standard 4 20 mA signal lin earized for oxygen in the range of 0 25 The expected lifetime of this sensor is about 5 years under no...

Page 8: ...art below as these gases are oxidized at the hot sur face of sensor The cell voltage is measured by micro controller based transmitter electronics and converted into a standard linearized 4 20 mA sign...

Page 9: ...combustion Optimum combustion conditions are achieved by decreasing the amount of excess air in the stack gas to the point where combus tibles start to increase See combustion diagram below The absolu...

Page 10: ...f combustion optimization which in turn represents savings in fuel 7 2 OMS420 features The main features of OMS420 system are Compact reliable and rugged industrial design Special reference air not re...

Page 11: ...to extract the sample from the tip of ceramic tube It can be used for clean flue gas temperatures up to 3 100 F 1 700 C 7 3 1 Compact model OMS420 61417 This model shall be used at site with low heat...

Page 12: ...N65 SS316Ti material for temperature below 1 200 F 650 C AISI300 material for temperature below 1 800 F 1 000 C mounting flange assembly supplied by user detector head with junction box for sensors O2...

Page 13: ...cable between junction box and transmitter pneumatic device option for automatic calibration back purge is not available for this model The main differences between the remote transmitter model and t...

Page 14: ...behind the sensors ambient air for reference gas diffuses through another filter screen for dust protection and flushes the backside of sensors the reference side of the detector Illustration for comp...

Page 15: ...65 NEMA4X that contains Printed circuit board with u processor PCB MAIN Backlit graphic display and dust proof keypad Printed circuit board for the sensor connection PCB OMS Electrical connector for p...

Page 16: ...to calibration inlet port of unit The procedure of calibration is described in chapter 6 7 7 7 Recommended calibration gas For automatic calibration or manual calibration see procedure in chapter 6 7...

Page 17: ...OPERATING MANUAL OXYGEN MONITORING SYSTEM OMS 420 19 8 Software flow chart www GlobalTestSupply com Find Quality Products Online at sales GlobalTestSupply com...

Page 18: ...ge has been properly insulated to prevent gas condensation Temperature Check mounting flange temperature min 160 F 70 C and max 300 F 150 C Check ambient temperature of transmitter for max 100 F 60 C...

Page 19: ...O2 value wet The O2 display is calculated to wet dry The O2 display is calculated to dry The gas humidity can be set by SET to Set gas humidity 4 20 mA 02 setting range of analog O2 output 4 20 mA CO...

Page 20: ...ng on flange temperature 2 V O2 heater 1 3 A heater current 0 3 A CO cell 5 mV after warm up and with fresh air 10 mV CO heater 7 5 V depending on flange temperature 3 0 V 1 V CO heater 0 4 A heater c...

Page 21: ...user level 1 PIN code Changing the pin code is described in following chapter 9 6 1 PIN code level 1 Entering the factory default PIN code 1111 user level 1 gains access to the SET main menu and the...

Page 22: ...ove cursor to values which can be changed EDIT change value by means of UP DOWN and POS OK save values BACK return to main menu Integration times from 0 to 30 seconds are settable where 0 seconds mean...

Page 23: ...must always be the zero calibration with AIR The delivery state of this function is off 9 6 6 Set calibration cylinder values This function allows setting the values of span gas cylinders used for cal...

Page 24: ...oid valves is possible By means of the key F1 the solenoid valve SV1 is switched ON or OFF key F2 the solenoid valve SV2 is switched ON or OFF and with the key F3 the single solenoid valve SV3 is swit...

Page 25: ...96 4 20 mA range CO 1 000 ppm O2 cylinder1 21 00 O2 cylinder2 2 00 CO cylinder1 0 ppm CO cylinder2 1 000 ppm mixture gas with additional 50 ppm H2 gas is expected Pulse duration 2 sec Numb of pulses 6...

Page 26: ...n the stack On site calibration is done without removing the probe from the stack After calibration tighten the calibration inlet port plug with a 14 mm wrench for 1 6 of a turn Perform adjustment 1 P...

Page 27: ...scription 1 Electrical connector 2 Hose connection cal gas 3 Probe tube stainless steel 4 Flange 4 ANSI 150 or DN65PN6 5 Probe head transmitter 6 Calibration gas cylinder 7 Pressure regulator with flo...

Page 28: ...al gas and back purge air 3 Probe tube stainless or Inconel steel 4 Flange DN65 PN6 or 4 ANSI 150 5 Probe head 6 Calibration gas cylinder 7 Pressure regulator with flow volume control 8 Transmitter 9...

Page 29: ...ion cal gas and back purge air 3 Probe tube Inconel or ceramic 4 Flange 4 AINSI 150 5 Probe head 6 Calibration gas cylinder 7 Pressure regulator with flow volume control 8 Transmitter 9 Special connec...

Page 30: ...ration adjustments on the OMS420 9 7 4 Pin Code level 2 Calibration with AIR zero gas or GAS span gas requires the use of level 2 pin code see chapter 9 6 1 POS position UP DOWN to change the numbers...

Page 31: ...should be followed by new calibration using calibration gas cylinder Only authorized persons or manufacturer s trained technicians are authorized to perform adjustments on the OMS420 9 7 6 CO cell set...

Page 32: ...l see picture below and select 10mV for offset trim and 100mV for span trim If actual values displayed are other than 10mV to 100mV setting can be adjusted by selecting Set offset or Set span and edit...

Page 33: ...hange value by means of UP DOWN until you read 400mV up to2000mV on the multi meter OK save values BACK return to calibration menu Note The 4 20mA analog output factory adjustment can deteriorate over...

Page 34: ...bubblier With single component gas CO the calibration is not possible If no mixture gas is available then see chapter 9 7 11 Calibration of O2 only set CO cylinder value 0 no calibration Calibration...

Page 35: ...ill be displayed Read calibration gas cylinder values and if any change is required other cylinder values then edit O2 and CO in the display by pressing O2 then the CO key Wait approximately 5 minutes...

Page 36: ...nstrument will display same value as the comparing CO selec tive measuring instrument 1 The measured value by means of Delta65 can be set desired value by pressing EDIT key 2 Using the UP and DOWN key...

Page 37: ...or regulation factory only PREV or NEXT move cursor EDIT change value by means of UP DOWN and POS OK save values BACK return to calibration menu First line regulation point actual CO Second line new s...

Page 38: ...ay Configuration not ok Checksum wrong New adjustment required Display Flash error New adjustment required Please contact your dealer manufacturer Display Unit to warm Hot environment Ambient temperat...

Page 39: ...2 0 2 O2 or 5 of reading whichever is larger COe not selective measurement accuracy is not an issue Response time 10 seconds Electronics micro controlled based on board graphic backlit LCD Output sign...

Page 40: ...0 1A CO sensor not o k 64 Heating current 0 1A CO sensor not o k 128 Calibration error calibration factor cannot be set Test gas cylinder is empty filter dirty or clogged Calibration offset value cann...

Page 41: ...ting point value reads 1E38 when not available Defined registers Available data with modbus command 4 READ INPUT REGISTERS PLC address Protocol address Data type Number of registers Register content D...

Page 42: ...OPERATING MANUAL OXYGEN MONITORING SYSTEM OMS 420 44 12 3 Declaration of confirmity www GlobalTestSupply com Find Quality Products Online at sales GlobalTestSupply com...

Page 43: ...OPERATING MANUAL OXYGEN MONITORING SYSTEM OMS 420 45 www GlobalTestSupply com Find Quality Products Online at sales GlobalTestSupply com...

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