Rohrback Cosasco Systems, Inc.
Microcor® Wireless Transmitter (MWT)
Features:
 Highly Secure and Reliable Self
Organizing Wireless Mesh Network
 High Resolution Metal Loss Measurement
for all process environments
 Low installed cost
 International Hazardous Area
Certifications
 WirelessHART™ 7 protocol
 Seamlessly Integrates with Emerson
Smart Wireless Networks
The MWT transmitter is based on RCS’s Microcor®
high resolution corrosion measurement technology,
the industries most widely used and only technology
capable of operating in any process environment.
The 2.4 GHz self-organizing wireless network
delivers exceptional data reliability and network
stability through its high security communication.
Microcor online systems are already known
worldwide for their proven accuracy and reliability.
The wireless link now adds simplicity, flexibility, and
exceptional economy of installation to new or
existing installations.
The MWT can be supplied as part of a complete
corrosion management system comprising access
fittings, probes, MWT’s, gateway, corrosion
management and process interface software.
Alternatively, the MWT can be added seamlessly to
an Emerson Smart Wireless Network or via direct
input from the gateway through Modbus Interface to
virtually any Process Automation System.
MWT’S are quickly and easily installed without the
time and expense required for wiring. Once installed
metal loss and computed corrosion rate is read from
the Gateway directly into your DCS system, an RCS
ICMS3-Amulet Corrosion Management System, or a
Microcor Tools software package for smaller scale
systems. MWT’s are easily configured using a direct
connection to a PC or laptop in a safe area, or
through RCS’s handheld instrument in hazardous
locations.
The MWT uses high resolution metal loss
measurement providing 18 bit resolution, and is
rated for operation in hazardous locations (Class I,
Zone 1). The allowable operating range of from
-40°C to 70°C is proven every day by existing
systems reliably working in the harsh environments
of the frigid arctic and deserts of the Middle East.
The MWT power module has a typical life of 3 years
and is hazardous location certified to allow change
out in the hazardous area. Typical wireless range is
900 ft (300 m) in medium density plant environments
from transmitter to transmitter or transmitter to
gateway, with up to three “hops” permissible from
any transmitter back to its gateway.
Other wireless communication options may be
permissible. For details, contact RCS.
Rohrback Cosasco Systems, Inc. - The World Leader in Corrosion Monitoring Systems
Specifications subject to change without notice
Wireless Overview
Microcor Wireless Transmitters
The MWTs communicate with each
other through a self-organizing 2.4
GHz mesh network, ensuring no point
of failure.
Gateway
The gateway serves as a connection
between the MWTs and a host
system. The gateway is easily
configurable and integrates into a
designated control system through
serial or ethernet connections.
Specifications
Operating Specifications
Physical Specifications
Resolution
18 bit (1 part in 262,144)
Enclosure
Rating: IP66
Materials:
Housing – 6061-T6 ALUM
Paint – Polyester Enamel over
Epoxy Primer
Probe element resistance range
1 to 50 milliohms
Stability of Reading
Typically ± 0.01% of span on reference probe
Power supply
7.2 V Lithium Power Module
Data Transmit Rate
Typically 5 or 10 minutes (range 15 sec to 60 min)
Weight
6.45 lbs (2.9 kg)
Communication:
2.4 GHz DSSS (Discrete
Spectrum).
WirelessHART 7 Protocol
Dimensions
See next page
Ambient Temperature Range
-40C to +70C (-40F to +158F)
Sequential
Spread
Pole or Wall Mounting
Metal Bracket (supplied) for direct wall mount and
adjustable U-Bolt mounting for 2-3” pipe size vertical
or horizontal pole mounting
Probe Mounting
Directly to probe via Probe Adapter (PN 745092 or
P/N 745093). For remote locations probe can be
directly connected to MWT via ATEX (PN 748224-L)
or UL/ULc (PN 748223-L) certified cable up to 6 ft
(2 m).
Rohrback Cosasco Systems, Inc. - The World Leader in Corrosion Monitoring Systems
Specifications subject to change without notice
Rohrback Cosasco Systems, Inc.
11.58
6.38”
270
Ø
7.59”
Transmitter Dimensions in inches, front view
Maximum Antenna Rotation 270°
Product Certifications
Telecommunication Compliance
All wireless devices require certification to ensure that they adhere to regulations regarding the use of the RF spectrum.
Nearly every country requires this type of product certification. RCS is working with governmental agencies around the
world to supply fully compliant products and remove the risk of violating country directives or laws governing wireless
device usage. The MWT is currently certified with the governmental agencies of Australia, Canada, European Union,
Russia, Thailand, and United States. Additional country approvals are in currently in progress and will be posted as
soon as certification is verified. Please contact RCS or visit our website for the latest country certifications.
FCC and Industry Canada (IC)
This device complies with Part 15 of the FCC Rules. Operation is subject to the following conditions. This device may
not cause harmful interference. This device must accept any interference received, including interference that may
cause undesired operation. This device must be installed to ensure a minimum antenna separation distance of 20 cm
from all persons.
ATEX Certification
Ex d [ib] Class I, Zone 1, IIC, T4, Ta = -40C to +70C
North American Certifications
FM AEx d [ib] Class I, Zone 1, IIC, T4, Ta = -40C to +70C
FMc Ex d [ib] Class I, Zone 1, IIC, T4, Ta = -40C to +70C
IEC Ex Certification
IEC Ex d [ib], Class I, Zone 1, IIC, T4, Ta = -40C to +70C
All certifications based on IP66 Enclosure and for use only with Power Module P/N 748400
Rohrback Cosasco Systems, Inc. - The World Leader in Corrosion Monitoring Systems
Specifications subject to change without notice
Ordering Information
Model
MWT-3905
Description
Microcor Wireless Transmitter
Code
Radio
0
2.4 GHz Wireless HART7 - Integral Antenna
Code
Housing
0
Aluminum
1
Stainless Steel 316 SS
MWT-3905
0
0
Typical Order Number
Wireless Gateway
Model Description
R-1420 Wireless Gateway
Code Power Input
A 24 VDC, 500 mA
Code Ethernet Communications – Physical Connection
(1) (2)
1
Ethernet
(3) (4)
2
Dual Ethernet
(5) (6)
Fiber Optic Ethernet
3
Code Wireless Update Rate, Operating Frequency, and Protocol
(7)
A3 User Configurable Update Rate, 2.4 GHz DSSS, WirelessHART™
Code Serial Communication
0
None
(7)
A
Modbus RTU via RS485
Code Ethernet Communication - Data Protocols
2
Webserver, Modbus TCP/IP, AMS Ready
4
Webserver, Modbus TCP/IP, AMS Ready, OPC
(8)
5
DeltaV Ready
Code
N5
N6
N1
ND
N7
NF
KD
R-1420
A
1
A3
A
2
N5
Product Certifications
FM Division 2, Non-incendive
CSA Division 2,Non-incendive
ATEX Type n
ATEX Dust Ignition-proof
IECEx Type n
IECEx Dust Ignition-proof
FM & CSA Division 2, Non-incendive and ATEX Type n
Code Adapters
0 None
J1 CM 20 Conduit Adapter
J2 PG 13.5 Conduit Adapter
J3 3/4 NPT Conduit Adapter
(9)
Code Antenna Options
0
None
WL2 Remote Omni-Antenna Kit, 50 ft. (15.2 m) cable, Lightning Arrestor
WL3 Remote Omni-Antenna Kit, 20 ft. (6.1 m) and 30 ft. (9.1 m) cables,
Lightning Arrestor
WL4 Remote Omni-antenna Kit, 10 ft. (3.0 m) and 40 ft. (12.2 m) cables,
Lightning Arrestor
J3
WL2
(1)
Single active 10/100 baseT Ethernet port with RJ45 connector.
(2)
Additional ports disabled.
(3)
Dual active 10/100 baseT Ethernet ports with RJ45 connectors.
(4)
Multiple active ports have separate IP addresses, firewall isolation, and no packet forwarding.
(5)
1300nm Multimode Optical fiber connection with separate SC connectors for Rx and Tx.
(6)
Includes features of Option 1
(7)
Convertible to RS232 via adaptor
(8)
Includes Webserver, Modbus TCP/IP, AMS Ready, OPC,
(9)
The WL2 - WL4 options require minor assembly.
Rohrback Cosasco Systems, Inc. - The World Leader in Corrosion Monitoring Systems
Example
Specifications subject to change without notice
Rohrback Cosasco Systems, Inc.
Probe Adapters
Model M2000 & M3000 series probes
P/N 745092
Model M4000 & S4000 series probes
P/N 745093
Cables
Transmitter to Probe Cable with Transmitter Mounting Bracket
Probe to Tx Cable 6ft (2m) max
ATEX certified (L=length in ft)
P/N 748224-L*
Probe to Tx Cable 6ft (2m) max
UL/ULc certified (L=length in ft)
P/N 748223-L*
*L=length in ft
Accesssories
7.2 V Lithium Power Module
P/N 748400
Rohrback Cosasco Systems, Inc.
11841 East Smith Avenue
Santa Fe Springs, CA 90670, USA
Tel: (1) 562-949-0123 Fax: (1) 562-949-3065
US Toll Free: 800-635-6898
E-Mail: sales@cosasco.com
Web Site: www. cosasco.com
Bulletin # 155-C
Rohrback Cosasco Systems Corrosion Monitoring Equipment is manufactured and sold under one or more of the following US Patents: 4138878,
4238298, 4338563, 4514681, 4537071, 4587479, 4605626, 4625557, 4755744, 4839580, 4841787, 4882537, 5243297.
© Copyright RCS, Inc.