Net Safety Monitoring SC310 Operating Manual

Reference Manual

Part Number: MAN-0084, re v . 08

Release: June 2016

SC310 Catalytic Bead Combustible Sensor

Important Instructions

Installing, operating or maintaining a Net Safety Product improperly could lead to serious injury or
death from explosion or exposure to dangerous substances. Comply with all information on the
product, in this manual, and in any local and national codes that apply to the product. Do not allow
untrained personnel to work with this product. Use Net Safety parts and work procedures specified in
this manual.

Net Safety Monitoring, Inc (Net Safety) de si gns, manufactures and tests p roducts to function within
specific conditio ns. Be c ause these products ar e sophisticated technical instrumen ts, i t is important
that the owner and oper ation personnel must str i c tly adhere both to the information printed on the
product nameplate and to all instructions provided in this manual prior to installation, operation, and
maintenance.

Notice

The contents of this publication are presented for informational purposes only, and while every effort
has been made to ensure t heir accuracy, they are not to be construed as warranties or guarantees,
expressed or implied, regarding the products or services described herein or their use or applicability.

All sales are governed by Net Safety’s terms and conditions, which are available upon request. We

reserve the right to modify or improve the designs or sp e c i fications of such produc t s at any time.
Net Safety does not assume responsibility for the selection, use or maintenance of any product.

Responsibility for proper selection, use and maintenance of any Net Safety products remains solely with
the purchaser and end us e r .

To the best of Net Safety’s knowledge the information herein is complete and accurate. Net Safety

makes no warranties, expressed or implied, including implied warranties of merchantability and fitness
for a particular purpo se wi th respect to this manu al and, in no event, shall N e t Safety be liable fo r an y
incidental, punitive, special or consequential damages including, but not limited to, loss of production,
loss of profits, loss of revenue or use and costs incurred including without limitation for capital, fuel and
power, and claims o f third parties.

Product names used herein are for manufacturer or supplier identification only and may be
trademarks/registered trademarks of these companies.

Net Safety and the Net Safety logo are regi stered trademarks of Net Safety Monitoring, Inc. The
Emerson logo is a trademark and service mar k o f the Emerson Electric Company.

Copyright © 2016 by R o se mount, Shakopee, M N .

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 re c e iving written pe rmission of Rosemount, Sha k opee, MN.

Warranty

Limited Warranty

Resale Products

Limitation of Remedy and Liability

1.
and Liability) herein, Seller warrants that (a) the licensed firmware embodied in the Goods will
execute the programming instructions provided by Seller; (b) that the Goods manufactured by
Seller will be free from defects in materials or workmanship under normal use and care; and (c)
Services will be performed by trained personnel using proper equipment and instrumentation
for the particular Service provided. The foregoing warranties will apply until the expiration of
the applicable warranty period. Sensors and d et ectors are warrante d ag ainst defectiv e p ar ts
and workmanship as pe r Section
to Buyer (
Buyer agrees that Seller has no liabili ty for Resale Products beyond making a reasonabl e
commercial effort to arrange for procurement and shipping of the Resale Products. If Buyer
discovers any warranty defects and notifies Seller thereof in writing during the applicable
warranty period, Seller shall, at its option, (i) correct any errors that are found by Seller in the
firmware or Services; (ii) repair or replace FOB point of manufacture that portion of the Goods
found by Seller to be defective; or (iii) refund the purchase price of the defective portio n of the
Goods/Services. Al l replacements or repair s ne cessitated by i nad eq uate maintenance; nor mal
wear and usage; unsuitable power sources or environmental conditions; accident; misuse;
improper installation; modification; repair; use of unauthorized replacement parts; storage or
handling; or any other cause not the fault of Seller, are not covered by this limited warranty and
shall be replaced or repaired at Buyer’s sole expense and Seller shall not be obligated to pay
any costs or charges in cu r r ed by Buyer or any other p ar ty except as may be agree d upon in
writing in advance by Seller. All costs of dismantling, reinstallation, freight and the time and

expenses of Seller’s personnel and representatives for site travel and diagnosis under this

limited warranty clause shall be borne by Buyer unless accepted in writing by Seller. Goods
repaired and parts replaced by Seller during the war r anty period shall b e i n war r anty for the
remainder of the original warranty period or 90 days, whichever is lo ng er . This limited
warranty is the only warranty made by Sell er and c an b e amended only in a writing signed by an
authorized representative of Seller. T he li mited warranty herein cea ses to be effectiv e if Buyer
fails to operate and use the Goods sold hereunde r i n a safe and reasonable manner and in
accordance with any wr i t ten instructions from t he m anufacturers. THE WARRANTIES AND
REMEDIES SET FORTH ABOVE ARE EXCLUSIVE. THERE ARE N O R EP R ESENTATIONS OR
WARRANTIES OF ANY KIND, EXP R ESS OR IMPLIED, AS TO MERCHAN T ABILITY, FITNESS FOR
PARTICULAR PURPOSE OR ANY OTHER MATTER WITH RESPEC T TO ANY OF THE GOODS OR
SERVICES.

. Subject to the limitations contained in Section 10 (Limitation of Remedy

7.4. Products purchased by Seller fro m a third party for resale

) shall carry only the warra n ty e xte nd ed by the original manufacturer.

2.
DELAY IN PERFORMANCE. T HE REM EDIES OF BUYER SET FORTH IN T HE AGREEMENT ARE
EXCLUSIVE. IN NO EVENT, REGARDLESS OF THE FORM OF T HE C LAI M OR C AUSE OF ACTION
(WHETHER BASED IN CONT R AC T , IN FR IN GEMENT, N EGL IGENC E, STRIC T L IABILITY, OTHER

TORT OR OTHERWISE), SHALL SELLER’S LIABILITY TO BUYER AND/OR BUYER’S CUSTOMERS

EXCEED THE PRICE TO BUYER OF THE SPECIFIC GOODS M AN UF AC TURED OR SERVICES
PROVIDED BY SELLER GIVING RISE TO THE CLAIM OR CAUSE OF ACTION. BUYER AGREES THAT

IN NO EVENT SHALL SELLER’S LIABILITY TO BUYER AND/OR BUYER’S CUSTOMERS EXTEND TO

INCLUDE INCIDENTAL, CONSEQUENTIAL OR PUNITI VE DAMAGES. THE TERM

“CONSEQUENTIAL DAMAGES” SHALL INCLUDE, BUT NOT BE LIMITED TO, LOSS OF

ANTICIPATED PROFITS, REVEN UE OR U SE AND COSTS INCURRED INC L UDI NG WITHOUT
LIMITATION FOR CAPITAL, FUEL AND POWER, AND CLAIMS OF BUYER’S CUSTOMERS.

. SELLER SHALL NOT BE LIABLE FOR DAMAGES CAUSED BY

Reference Manual Table of Contents

Table of Contents i

MAN-0084 June 2016

Contents

Section 1: Introduction ...................................................................... 1

1.1 Models covered ................................................................................................................... 1

1.2 Service support ................................................................................................................... 1

1.3 Return of material ............................................................................................................... 1

1.4 Product recycling/disposal .................................................................................................. 1

Section 2: Installation ........................................................................ 2

2.1 Unpacking and inspection ................................................................................................... 2

2.2 Locate sensor ...................................................................................................................... 2

2.3 Direct mount or sensor separation ...................................................................................... 2

2.3.1 Sensor direct mount ............................................................................................. 2

2.3.2 Sensor separation ................................................................................................. 2

2.4 Dimensions ......................................................................................................................... 4

2.5 Mounting ............................................................................................................................ 5

2.6 Wiring ................................................................................................................................. 6

2.6.1 Field installation .................................................................................................... 6

2.6.2 Sen so r se paration distanc e ................................................................................... 7

2.6.3 Installation to transmitter or junction box ............................................................. 7

2.6.4 Sensor wiring ........................................................................................................ 7

2.6.5 Exter nal ground .................................................................................................... 8

2.7 Calibration .......................................................................................................................... 9

2.7.1 K-factor ................................................................................................................ 9

2.8 Installation checklist .......................................................................................................... 11

Section 3: Operation ........................................................................ 12

3.1 Sensor configuration settings ............................................................................................ 12

3.2 Sensor power up ............................................................................................................... 12

3.3 Sensor communication ..................................................................................................... 12

3.4 Millennium II Basic transmitter configuration .................................................................... 12

3.5 Fault conditions ................................................................................................................ 13

3.6 SensorGuard ..................................................................................................................... 13

Section 4: Maintenance ................................................................... 14

4.1 Sensor poisoning ............................................................................................................... 14

4.2 Cross sensitivities .............................................................................................................. 14

4.3 Routine inspections ........................................................................................................... 14

4.4 Bump testing .................................................................................................................... 14

4.5 Sensor replacement procedure ......................................................................................... 15

4.6 Troubleshooting ............................................................................................................... 15

4.7 Storage ............................................................................................................................. 15

4.8 Spare parts and accessories ............................................................................................... 16

Section 5: Electrostatic sensitive device ........................................... 17

Section 6: Wire resistance table ....................................................... 18

Section 7: Specifications .................................................................. 19

7.1 Electrical ........................................................................................................................... 19

7.1.1 Voltage range ..................................................................................................... 19

7.1.2 Power consumption ............................................................................................ 19

7.2 Performance ..................................................................................................................... 19

Table of Contents Reference Manual

ii Table of Contents

June 2016 MAN-0084

7.2.1 Response time* .................................................................................................. 19

7.2.2 Accuracy ............................................................................................................. 19

7.2.3 Zero Drift ............................................................................................................ 19

7.2.4 Repeatability ...................................................................................................... 19

7.2.5 Dete cti on Range ................................................................................................. 19

7.2.6 C alibration Frequency ......................................................................................... 19

7.2.7 Sto r ag e te mperature .......................................................................................... 19

7.2.8 Operating tempera ture ...................................................................................... 19

7.2.9 Relative humidity ................................................................................................ 20

7.2.10 Metallurgy (housi ng ) .......................................................................................... 20

7.2.11 Ingress protection ............................................................................................... 20

7.2.12 Weight ............................................................................................................... 20

7.3 Separation ........................................................................................................................ 20

7.4 Warranty ........................................................................................................................... 20

Section 8: Certifications ................................................................... 21

8.1 North America................................................................................................................... 21

8.1.1 Hazardous locations ........................................................................................... 21

8.1.2 Performance ....................................................................................................... 21

8.2 IECEx ................................................................................................................................. 21

8.3 FC Models ......................................................................................................................... 22

8.3.1 N o r t h Ame r i c a ( -FC models) ................................................................................ 22

8.3.2 IECEx (-FC models) .............................................................................................. 22

8.3.3 Special conditions for safe use ............................................................................ 22

Section 9: Ordering information ...................................................... 23

Reference Manual Introduction

Introduction 1

Rosemount
6021 Innovation Boulevard
Shakopee, MN 55379

RMA number

MAN-0084 June 2016

Section 1: Introduction

1.1 Models covered

The SC310 catalytic bead combustible gas sensor is designed specifically for use with the Millennium II
Transmitter (mode l s M 21, M22, or M2B). This sensor is bo th versatile and reliable for fast, accur ate,
and continuous monitoring of gases in extreme enviro nments.

The sensor assembl y c o n si sts of an explosion proof enclosure (housing) rated for hazardous locations
and a replaceable sensor module. This senso r must only be used with a Millennium II series transmitter.
If the sensor is connected to any other model of transmitter, it will not function and may result in the
sensor or transmitter being damaged.

1.2 Service support

Technical support for this product can be provided by contacting your local Emerson Process
Management represe ntative or by co ntac ting the Technical Suppo r t de p ar tment at [phone]
(toll free) or [e-mail]

.

1.3 Return of material

To expedite the return of this product, proper communication between the customer and the factory is
important. Before returning a product, c al l [phone] (toll free ) or e-mail

[e-mail]

On the return of the equipment, include the following information:

1. RMA number provided to you by Rosemount

2. Company name and contact information

3. Ship all equipment, prepaid to:

4. Mark all packages wit h the
Pack items to protect them from damage and use anti-static bags or aluminum-backed cardboard as

protection from electrostatic damage.

All equipment must be shipped prepaid. Collect shipments will not be accepted.

for a Return Material Authorization (RMA) number.

and type of return (e.g. return for evaluation)

1.4 Product recycling/disposal

Recycling of equipment and packaging should be taken into consideration and disposed of in
accordance with local and national legislations/regulations.

Installation Reference Manual

2 Installation

Avoid placing the sensor where it may be exposed to splas hing or di rect water sprays. To protect the
sensor a splashguard may be req ui r e d .

June 2016 MAN-0084

Section 2: Installation

2.1 Unpacking and inspection

Carefully remove all of the components from the packaging and verify the m against the enclosed
packing list. Inspect all components for any obvious damage such as broken or loose parts. If you find
any components missing or damaged, notify your local Emerson Process Management representative
or the factory immediately.

Recycling of packaging should be taken into consideration and disposed of in accordance with local and
national legislations/regulations.

2.2 Locate sensor

Prior to installing the sensor, a plan should be developed for placement of the sensor. Although there
are no absolute rules for determining the quantity of detectors or location of a sensor, the following
points should be considered when planning the installation.

• Carefully locate the sensor in an area where gases may p otentially accumulate, considering that

light gases tend to ri se and heavy gases tend to fal l and accumulate in low are as.

• Use redundant systems to enhance protection and reliability.

• Consider air mov em e nt p atterns in the facility.

• Consider the constr uc tion of the facility su ch as trenches where h eavy gases or peaks where l ight

gases may accumulate.

• Seek advice from experts knowledgeable about the target gas to be detected.

• Refer to the regulatory publications that discuss guidelines for your industry.

2.3 Direct mount or sensor separation

2.3.1 Sensor direct mount

The sensor can be directly attached to a Millennium II transmitter and placed in an appropriate location
for detecting the target gas, or the sensor can be separated and remotely mounted away from the
Millennium II transmitter. The sensor shoul d b e ac c e ssible for calibration and maintenance purposes.
The transmitter sho uld be located where it is accessible and visible.

2.3.2 Sensor separation

If the sensor is to be remotely mounted from the transmitter, the sensor must be connected to a
certified junction box. In this case, the transm i t ter is typically located near eye-level for easy access and
the sensor is mounted whe re the gas is likely to ac cu mulate.

Reference Manual Installation

Installation 3

Figure 2-1 Sen so r se paration exampl e

Millennium II Transmitter

Separation Junction Box

Millennium II SC310 Sen so r

CCS-1 Calibration Cup

Conduit

Calibration Tubing

MAN-0084 June 2016

In order to ease the calib r ation process a calibration cup (CCS-1) can be attached to the bottom of the
sensor housing and calibration tubing run from the calibration cup to a convenient place for applying
the calibration gas, e l iminating the need to access the sensor dir e ct l y . In this case, to compensate for
the effect of distance, consider decreasing the calibration tubing length to some length where the end
of the tubing to the gas caniste r i s st i l l accessible or increase the calibration gas flow rate between the
calibration gas cylinder and sensor. Refer to Figure 2-1 for an example of the senso r separation. For
tubing lengths less t han 10 feet (3 meters), use a 0.5 LP M r e g ul at o r and for lengths greater th an 10 feet
(3 meters) use a 1.0 LPM regulator. On initial install, always confirm readings directly at the transmitter
by applying a known gas concentration to the sensor and compare the output from the transmitter.
Readings should be accurate to the gas concentration applied taki ng i nto account the sensor acc uracy
specifications in Section 7.1.2.