“When exposed to sulfur dioxide gas, the sensor may report a gas

Attention:
Reference: Emerson Sulphur dioxide (S02) Safety Notification and MicroWatt Field Support Proposal
For over 20 years MicroWatt has been your independent, authorized distributor for Net Safety.
Emerson Process Management acquired Net Safety and MicroWatt continues as your
exclusive Distributor in Western Canada.
We are obligated to inform you that a Product Safety Notification has been issued by Emerson
for products which you purchased from MicroWatt.
Overview
Emerson / Net Safety Monitoring Inc. has identified a potential safety concern affecting the operation
of the following SO2 sensor and sensor/transmitter models;
ST330A-100-ASSY
MLP-AR-ST1300-20
MLP-A-ST1300-20-SEP
MLP-AR-ST1300-20-SEP-SS
MLP-A-ST1300-100-SS
MLP-AR-ST1300-100-SEP
MLP-A-ST1300-500
MLP-AR-ST1300-500-SS
MLP-AST1300-500-SEP-SS
ST330S-100-ASSY
MLP-A-ST1300-20-SS
MLP-AR-ST1300-20-SEP
MLP-A-ST1300-100
MLP-AR-ST1300-100-SS
MLP-A-ST1300-100-SEP-SS
MLP-AR-ST1300-500
MLP-A-ST1300-500-SEP
MLP-AR-ST1300-500-SEP-SS
MLP-A-ST1300-20
MLP-AR-ST1300-20-SS
MLP-A-ST1300-20-SEP-SS
MLP-AR-ST1300-100
MLP-A-ST1300-100-SEP
MLP-AR-ST1300-100-SEP-SS
MLP-A-ST1300-500-SS
MLP-AR-ST1300-500-SEP
UT-PX-XX-ST1300-XXX
Also in scope are the sensor element replacement models ST330-20, ST330-100, ST1300-20,
ST1300-100, and ST1300-500.
The Potential Effect stated by Emerson is:
“When exposed to sulfur dioxide gas, the sensor may report a gas concentration
reading that is less than the actual gas concentration. Depending on alarm levels at
which the instrument is set, the detector may fail to alarm on exposure to a dangerous
level of target gas.”
Since the identification of this issue, Net Safety has discontinued these products from its offering.
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IMMEDIATE IMPACT – Installed Systems, Open Orders and Projects
Due to the nature of the failure mechanism, Net Safety recommends that the sensor be taken out
of service immediately and replaced with a comparable product.
1)
Freight costs: Net Safety has agreed to cover shipping expenses for returned sensors.
Channel partners have been authorized to use Net Safety’s freight account so that its freight
services provider may arrange for pickup.
2) Technical support, logistics management, handling: Net Safety will not pay any administrative
fees for technical support, logistics management, and handling of returned sensors.
MicroWatt Support Proposal
MicroWatt is deeply committed to its customers and the support of Emerson/Net Safety
products, however, Emerson is not offering MicroWatt or the end user any form of SO2
replacement product.
MicroWatt is also partnered with Honeywell Analytics, the largest gas detection manufacturer
globally, which can supply a suitable and cost effective alternative. MicroWatt is prepared to
provide our customers world-class products and expert services to simplify the entire
replacement process, in the event you decide to follow the Emerson recommendation of
removing these products from service.
For each instrument we remove and replace as per the program, we are prepared to
provide customers a credit of up to $1200.00 applied against MicroWatt’s program cost,
dependent upon your product configuration.
Please coordinate with your MicroWatt Account Manager to secure the benefits of this program.
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Net Safety Monitoring Inc.
2721 Hopewell Place NE
Calgary, Alberta, Canada
Phone: +1 403 219-0688
Fax: +1 403 219-0694
March 25, 2015
Attention:
Plant/Production Safety Officer
IMPORTANT PRODUCT SAFETY NOTIFICATION
Reference Number 201503171
This letter is to notify affected customers of a potential safety concern involving:
ST330 Millennium II Sulfur Dioxide (SO2) Electrochemical Sensor
Our records indicate you received the product affected by this notification as identified in
Appendix “A”. Please forward to all appropriate individuals immediately. Failure to take
action could result in a loss of process control, property damage, serious personal injury or
death. If you resold or transferred any of the affected products in question, please immediately
forward this important Product Safety Notification to the eventual user so they can take
appropriate action.
>>PLEASE READ CAREFULLY <<
Overview
Net Safety Monitoring Inc. has identified a potential safety concern affecting the operation of the
ST330 Millennium II SO2 sensor. The models affected are ST330A-100-ASSY and
ST330S-100-ASSY.
The concern is poor accuracy across the temperature range of the sensor. When exposed to gas
concentrations, the sensor may not be able to maintain adequate accuracy levels relevant for
alarm setting.
Since the identification of this issue, Net Safety has discontinued this product from its product
offering.
Potential Effect
When exposed to sulfur dioxide gas, the ST330 sensor may report a gas concentration reading
that is less than the actual gas concentration. Depending on alarm levels at which the instrument
is set, the detector may fail to alarm on exposure to a dangerous level of target gas.
IMPORTANT: The products are used in many unique applications; each user must determine
the effect of this issue with respect to their application and act accordingly.
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Net Safety Monitoring Inc.
2721 Hopewell Place NE
Calgary, Alberta, Canada
Phone: +1 403 219-0688
Fax: +1 403 219-0694
March 25, 2015
Attention:
Plant/Production Safety Officer
IMPORTANT PRODUCT SAFETY NOTIFICATION
Reference Number 201503172
This letter is to notify affected customers of a potential safety concern involving:
ST1300 Millennium Sulfur Dioxide (SO2) Electrochemical Sensor
Our records indicate you received the product affected by this notification as identified in
Appendix “A”. Please forward to all appropriate individuals immediately. Failure to take
action could result in a loss of process control, property damage, serious personal injury or
death. If you resold or transferred any of the affected products in question, please immediately
forward this important Product Safety Notification to the eventual user so they can take
appropriate action.
>>PLEASE READ CAREFULLY <<
Overview
Net Safety Monitoring Inc. has identified a potential safety concern affecting the operation of the
ST1300 Millennium SO2 sensor. The transmitter models affected are MLP-A-ST1300-20, MLPAR-ST1300-20, MLP-A-ST1300-20-SS, MLP-AR-ST1300-20-SS, MLP-A-ST1300-20-SEP,
MLP-AR-ST1300-20-SEP, MLP-A-ST1300-20-SEP-SS, MLP-AR-ST1300-20-SEP-SS, MLPA-ST1300-100, MLP-AR-ST1300-100, MLP-A-ST1300-100-SS, MLP-AR-ST1300-100-SS,
MLP-A-ST1300-100-SEP, MLP-AR-ST1300-100-SEP, MLP-A-ST1300-100-SEP-SS, MLPAR-ST1300-100-SEP-SS, MLP-A-ST1300-500, MLP-AR-ST1300-500, MLP-A-ST1300-500SS, MLP-AR-ST1300-500-SS, MLP-A-ST1300-500-SEP, MLP-AR-ST1300-500-SEP, MLP-AST1300-500-SEP-SS, MLP-AR-ST1300-500-SEP-SS. Also in scope are the sensor models
SO2-20, SO2-100, ST1300-20, ST1300-100, and ST1300-500.
The concern is poor accuracy across the temperature range of the sensor. When exposed to gas
concentrations, the sensor may not be able to maintain adequate accuracy levels relevant for
alarm setting.
Since the identification of this issue, Net Safety has discontinued this product from its product
offering.
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FIELD TECHNICAL SUPPORT OVERVIEW
1.
PURPOSE
Local Net Safety Monitoring/Emerson Process Management Sales and Service
Representative to execute the removal and replacement of the discontinued
Emerson Net Safety SO2 sensor and transmitter. Replacement will be a fully
compatible SO2 gas detection system.
2.
PROJECT LOCATION
Customer’s site
3.
SCOPE OF WORK
3.1
REMOVE
3.1.1 Decommission the Emerson Net Safety SO2 transmitter and sensor
system.
3.1.2 Disconnect wiring, remove explosion proof seals if required, pull back
power and control wiring.
3.2
REPLACE
3.2.1 Assess mechanical requirements to install replacement transmitter and
sensor junction box. E.g. Uni-strut, unions, elbows, rigid conduit, flex
conduit, I-Tray, nipples and wire.
3.2.2 Install replacement transmitter and sensor junction box to the
appropriate electrical and site regulations.
3.2.3 Commission and start-up the replacement gas detection system.
3.2.4 Bump test replacement gas detection.
3.3
TRAINING
3.3.1 Provide on-site training for customer’s personnel for the replacement
gas detection system. Menu navigation, trouble-shooting, component
identification, spare parts, calibration frequency and maintenance.
3.4
DELIVERABLES
3.4.1 A functional and safe SO2 gas detection system.
3.5 PRE-SITE REQUIREMNTS
3.5.1 Drawings electrical & mechanical, photographs of installations (if
available), specific safety requirements and/or training requirements.
4.
PROPOSAL COSTS
4.1.1 Field Technical Support (Contact Local Net Safety Representative)
4.1.2 Replacement Gas Detection (Contact Local Net Safety Representative)
IMPORTANT: The products are used in many unique applications; each user must determine
the effect of this issue with respect to their application and act accordingly.
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