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Figure 2-3: Sensor Mounted to Net Safety Millennium II Basic Transmitter and
Junction Box

A.

¾

-in. NPT

B. ATEX locking collar

C. Sensor mouth

D. Sensor pointing downwards

Install

Reference Manual

November 2020

00809-0100-4303

12

Emerson.com/FlameGasDetection

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Содержание Net Safety ST3

Страница 1: ...Reference Manual 00809 0100 4303 Rev AB November 2020 Net Safety ST3 XChem Electrochemical Sensors ...

Страница 2: ...ital fuel and power and claims of third parties Product names used herein are for manufacturer or supplier identification only and may be trademarks registered trademarks of these companies All rights reserved No part of this work may be reproduced or copied in any form or by any means graphic electronic or mechanical without first receiving written permission from Emerson Warranty 1 Limited Warra...

Страница 3: ...PARTICULAR PURPOSE OR ANY OTHER MATTER WITH RESPECT TO ANY OF THE GOODS OR SERVICES 2 Limitation of Remedy and Liability SELLER SHALL NOT BE LIABLE FOR DAMAGES CAUSED BY DELAY IN PERFORMANCE THE REMEDIES OF BUYER SET FORTH IN THE AGREEMENT ARE EXCLUSIVE IN NO EVENT REGARDLESS OF THE FORM OF THE CLAIM OR CAUSE OF ACTION WHETHER BASED IN CONTRACT INFRINGEMENT NEGLIGENCE STRICT LIABILITY OTHER TORT O...

Страница 4: ...4 ...

Страница 5: ...19 3 3 Sensor end of life diagnostic 20 3 4 Sensor communication 20 3 5 Configure Net Safety Millennium II Basic Transmitter 21 3 6 Fault conditions 22 Chapter 4 Maintenance 23 4 1 Cross sensitivities 23 4 2 Bump testing 24 4 3 Replace sensor module 24 4 4 Troubleshooting 25 4 5 Storage 25 4 6 Spare parts and accessories 25 Chapter 5 Electrostatic sensitive device 27 Chapter 6 Wire resistance tabl...

Страница 6: ...Contents Reference Manual November 2020 00809 0100 4303 6 Emerson com FlameGasDetection ...

Страница 7: ...free or Safety CSC Emerson com 1 3 Return of material To expedite the repair and return of this product proper communication between the customer and the factory is important Prerequisites Before returning a product for repair call 1 866 347 3427 toll free or email Safety CSC emerson com for a Return Material Authorization RMA number On the return of the equipment include the following information...

Страница 8: ...ments 1 4 Product recycling disposal Consider recycling equipment and packaging Dispose of the product and packaging in accordance with local and national legislations and regulations Introduction Reference Manual November 2020 00809 0100 4303 8 Emerson com FlameGasDetection ...

Страница 9: ...re light gases may accumulate Seek advice from experts knowledgeable about the primary gas to be detected Use common sense and refer to the regulatory publications that discuss guidelines for your industry 2 3 Mount sensor You can either mount the sensor directly attached to a Net Safety Millennium II transmitter or remotely away from the transmitter Make sure the sensor is accessible for calibrat...

Страница 10: ...r Readings should be accurate to the gas concentration applied taking into account the sensor accuracy specifications in Specifications Figure 2 1 Sensor Separation Example A Controller B Apply calibration gas C Tubing for calibration gas D Sensor E Calibration cup F Conduit G Junction box H Approximately knee level 2 4 Mounting Prior to mounting the sensor to the transmitter or junction box enclo...

Страница 11: ...ing the detector to a flat surface or a pole Contact your local Net Safety representative for detailed information Note Always mount the sensor vertically such that its mouth is pointed in the downward position as shown in Figure 2 2 and Figure 2 3 Figure 2 2 Sensor Mounted to a Net Safety Millennium II Transmitter A in national pipe thread NPT B ATEX locking collar C Sensor pointing downwards D S...

Страница 12: ...d to Net Safety Millennium II Basic Transmitter and Junction Box A in NPT B ATEX locking collar C Sensor mouth D Sensor pointing downwards Install Reference Manual November 2020 00809 0100 4303 12 Emerson com FlameGasDetection ...

Страница 13: ...1 Dimensions in Inches Millimeters Letter Aluminum housings Stainless steel housings A 6 3 160 5 9 150 B 5 6 142 5 1 130 C 5 4 137 4 6 117 D 9 7 246 8 9 226 E 6 0 152 6 0 152 F 5 7 145 5 8 147 G 2 6 66 2 6 66 H 2 9 74 2 9 74 I 4 1 103 3 9 100 J 0 157 4 0 157 4 Reference Manual Install 00809 0100 4303 November 2020 Net Safety ST3 13 ...

Страница 14: ...ction Box JB Enclosure and Sensor Dimensions in Inches Millimeters Stainless steel Aluminum A 4 7 119 4 8 122 B 3 6 91 3 6 91 C 3 6 91 3 6 91 D 4 7 119 4 8 122 E 5 1 130 5 1 130 F 0 3 7 6 0 3 7 6 G 2 6 66 2 6 66 H 2 9 74 2 9 74 I 2 8 71 3 0 76 J 8 9 226 9 0 229 Install Reference Manual November 2020 00809 0100 4303 14 Emerson com FlameGasDetection ...

Страница 15: ...quirements follow the recommendations on cable choice and guidelines as outlined in the Net Safety Millennium II Transmitter Reference Manual or Net Safety Millennium II Basic Reference Manual In applications where the wiring is installed in conduit do not use the conduit for wiring to other equipment 2 6 2 Sensor separation distance The resistance of the connecting wiring a function of the gauge ...

Страница 16: ... open 2 Insert the appropriate wire into the open connector hole releasing the screwdriver to secure the wire Refer to Figure 2 6 Figure 2 6 Terminal Connection 3 Connect the sensor wires to the Net Safety Millennium II Transmitter or junction box as per the appropriate transmitter or junction box manual Figure 2 7 outlines the connections to a Net Safety M21 Millennium II Transmitter Table 2 3 ou...

Страница 17: ...minals C Channel 1 4 20 mA signal D Channel 2 4 20 mA signal E Earth ground F White wire G Red wire H Blue wire I Black wire J M2 transmitter terminal board K Channel 2 sensor terminals L Channel 1 sensor terminals M Sensor Reference Manual Install 00809 0100 4303 November 2020 Net Safety ST3 17 ...

Страница 18: ...re completing the first calibration Although Emerson calibrated the sensor at the factory this calibration may have been disrupted after shipment and calibration after installation is necessary to ensure performance To ensure proper operation of Net Safety ST3 Emerson recommends calibrating hydrogen sulfide sensors every six months and calibrating carbon monoxide or oxygen sensors every three mont...

Страница 19: ...r type the Net Safety ST341 oxygen sensor could take up to an hour to warm up During the warm up period the sensor may not provide accurate results and gas concentration levels may fluctuate Refer to the Net Safety Millennium II Transmitter Reference Manual or the Net Safety Millennium II Basic Transmitter Reference Manual for status indicators during this period Confirm that the Net Safety Millen...

Страница 20: ... the sensor has detected an end of life condition the alarm relay will not provide an alarm condition if gas is present therefore Emerson recommends replacing the sensor as soon as possible For further information on the operation of the relays please refer to the associated transmitter manual Net Safety Millennium II Multi Channel Transmitter Reference Manual or Net Safety Millennium II Basic Tra...

Страница 21: ...the transmitter s DIP Switch 2 positions as seen in Hydrogen sulfide sensor Net Safety ST320 DIP switch settings and Carbon monoxide sensor Net Safety ST360 DIP switch positions Select the transmitter s DIP Switch 2 position that gives the range of gas to be detected 3 5 1 Detection range Hydrogen sulfide ST320 Carbon monoxide ST360 Oxygen ST341 20 ppm 50 ppm 100 ppm 500 ppm 1000 ppm 25 volume 3 5...

Страница 22: ...Table 3 1 Table 3 1 Fault Conditions Fault condition Analog output Fault relay output Sensor zero drift 2 5 mA Fault Memory fault 2 5 mA Fault Sensor nearing end of life Alternating 2 5 mA for 10 seconds and normal level for 50 seconds Alternating 2 5 mA for 10 seconds and normal level for 50 seconds Calibrate sensor 2 5 mA Fault Operate Reference Manual November 2020 00809 0100 4303 22 Emerson co...

Страница 23: ...gas sensor manufacturer s test equipment Some cross interference break through will occur if gas is applied for a longer period of time 4 1 1 Cross sensitive gases for hydrogen sulfide sensor Net Safety ST320 Table 4 1 Cross Sensitive Gases Compounds Cross sensitive gas Cross sensitive gas concentration Reading Carbon monoxide 300 ppm 3 ppm Sulfur dioxide 5 ppm 1 ppm Nitrogen dioxide 5 ppm 0 5 ppm...

Страница 24: ...racy and response of the sensor 4 3 Replace sensor module Emerson pre calibrates the sensors at the factory however you must perform field calibration as a part of commissioning When the sensor end of life diagnostic indicates a fault condition you can no longer calibrate or the sensor is not working properly you may need to replace the sensor module WARNING Do not open the transmitter sensor or j...

Страница 25: ...d not xxx as shown in Figure 3 1 If the display is showing xxx then the sensor module is not seated properly In this case repeat all steps within this procedure 4 4 Troubleshooting Emerson did not design these sensors and transmitters to be repaired in the field If problems should develop first check for faulty wiring confirm proper voltage to the sensor and try to calibrate If problems persist pl...

Страница 26: ...CYL H2S A 50 15 3 gal 58 L 50 ppm H2S oxygen balanced CAL CYL SO2 10 15 3 gal 58 L 10 ppm SO2 CAL CYL CO 250 27 2 gal 103 L CO Calibration cup CCS 1 Separation kit JB MPD A aluminum JB MPD S stainless steel Replacement sensor module ST320 100 H2S ST330 100 SO2 ST341 25 O2 ST360 1000 CO Ingress protection filter IPF 001 2 in 50 8 mm pole mounting kit UN MK 32 Duct mounting kit UDM 001 3 3 ft 1 m sa...

Страница 27: ...e following guidelines Handle boards by metal shields taking care not to touch electronic components Wear grounded wrist or foot straps ESD shoes or heel grounders to dissipate unwanted static energy Prior to handling boards dispel any charge in your body or equipment by touching a grounded metal surface Ensure all components are transported and stored in static safe packaging When returning board...

Страница 28: ...Electrostatic sensitive device Reference Manual November 2020 00809 0100 4303 28 Emerson com FlameGasDetection ...

Страница 29: ... 1500 457 2 15 20 9 58 6 02 3 79 1750 533 4 17 80 11 20 7 03 4 42 2000 609 6 20 30 12 80 8 03 5 05 2250 685 8 22 80 14 40 9 03 5 68 2500 762 25 40 16 00 10 00 6 31 3000 914 4 30 50 19 20 12 00 7 58 3500 1066 8 35 50 22 40 14 10 8 84 4000 1219 2 40 60 25 50 16 10 10 00 4500 1371 6 45 70 28 70 18 10 11 40 5000 1524 50 10 32 00 20 10 12 60 5500 1676 4 55 80 35 10 22 10 13 91 6000 1828 8 61 00 38 30 2...

Страница 30: ...Wire resistance table Reference Manual November 2020 00809 0100 4303 30 Emerson com FlameGasDetection ...

Страница 31: ... for the area classification gas and temperature class This information is clearly defined in the respective codes 7 2 North America Markings Class 1 Division 1 Groups BCD T5 Ex d IIB H2 T5 Class 1 Zone 1 AEx d IIB H2 T5 Gb Type 4X IP64 7 3 IECEx Markings Ex db IIB H2 T5 Gb 40 C Tamb 75 C Special Condition of Use Flameproof joints are not intended to be repaired Reference Manual Product certificat...

Страница 32: ...an Crescent Singapore 128461 Republic of Singapore 65 6 777 8211 65 6 777 0947 safety csc emerson com Linkedin com company Emerson Automation Solutions Twitter com Rosemount_News Facebook com Rosemount Youtube com user RosemountMeasurement 2020 Emerson All rights reserved Emerson Terms and Conditions of Sale are available upon request The Emerson logo is a trademark and service mark of Emerson Ele...

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