Emerson 775 THUM Data Sheet

Thum Adapter

D103306X012

775 Smart Wireless THUMt Adapter

Product Bulletin

62.1:775

August 2012

The Smart Wireless THUM adapter is a device for use
on HARTr communicating instruments such as the
Fisherr FIELDVUEt digital valve controller. The THUM
adapter adapts the wired HART protocol to the
WirelessHARTr protocol.

In many process facilities, HART communicating field
devices have been installed and working for years.
However, getting important information such as valve
health to the people who need it is a challenge, as
diagnostic information is often inaccessible.

A wireless network can be deployed to gain access to
valve diagnostics. The THUM adapter is installed on
field devices one at a time - significantly reducing the
risk and impact of installation error. Plus, the network
is scalable. Start with one THUM adapter on a
FIELDVUE digital valve controller. Then, as you see the
value it brings, add more devices to the network.

Features

n Loop Powered—No batteries; power scavenging

technology. No maintenance required.

n Reliable Wireless—The WirelessHART

communication protocol provides the high level of
communication reliability required in process
control applications.

n Rugged Construction—The electronics are fully

encapsulated and enclosed in an aluminum
housing.

n Security—The WirelessHART self‐organizing mesh

network includes encryption, authentication, and
authorization mechanisms to provide industry
leading security.

n Wireless Connectivity—The THUM adapter enables

configuration, calibration, and valve health
monitoring via AMS.

n Installation Flexability—The THUM adapter can be

installed anywhere along the control wires.

WIRELESS
THUM ADAPTER

www.Fisher.com

FIELDVUE DVC6200 DIGITAL VALVE CONTROLLER, AND THE WIRELESS THUM ADAPTER

FISHER CONTROL‐DISK WITH 2052 ACTUATOR,

Product Bulletin

62.1:775
August 2012

Specifications

THUM Adapter

D103306X012

Functional Specifications

Input

Any 2‐ or 4‐wire HART 5.0 powered device

Output

WirelessHART Communication Protocol

Humidity Limits

0-100% relative humidity

Burst Rate

User selectable, 8 sec. to 60 min.

Physical Specifications

Electrical Connections

The THUM adapter is connected in series with the 4-20 mA
loop.

Power Requirements

SmartPowert: Power scavenging technology (no battery
required)

The THUM adapter draws power by drawing voltage from
the loop. The drop is linear from 2.25 volts at 3.5 mA to 1.2
volts at 25 mA, but does not affect the 4-20 mA current
signal. Under fault conditions, the maximum voltage drop
is 2.5 volts.

Enclosure Rating

NEMA 4X and IP66

Mounting

May be installed anywhere on the control wiring loop.
Typically, mounting will be on or near the control valve.
May be mounted directly on the available conduit opening
of the terminal box or remotely using remote mount kit.

Mounting Connection: 1/2 NPT external

Dimensions

50.8

(2.00)

36.1

130.8
(5.15)

(1.42)

Performance Specifications

48.5

(1.91)

Materials of Construction

Enclosure

Housing:

J Low‐copper aluminum or J 316 SST

Paint: Polyurethane
M20‐Conduit Adapter: SST
M20‐Conduit Adapter O-ring: Buna‐n

Antenna

Poly butadine terephthalate (PBT)/Polycarbonate (PC)
integrated omnidirectional antenna

Weight

THUM Adapter only AL 0.29 kg (0.65 lb)
THUM Adapter only SST 0.5 kg (1.1 lb)
AL THUM Adapter with AL remote kit 3.2 lbs. (1.45 kg)
SST THUM Adapter with SST remote kit 5.8 lbs. (2.65 kg)
AL THUM Adapter with M20 conduit adapter 0.85 lbs. (0.38 kg)
SST THUM Adapter with M20 conduit adapter 1.3 lbs. (0.59 kg)

ElectroMagnetic Compatibility (EMC)

Meets all relevant requirements of EN 61326‐1 (2006)
when installed with shielded wiring. The sub‐device must
also use shielded wiring for installation.

Vibration Effect

Output unaffected when tested per the requirements of
IEC60770‐1 field with general application or pipeline with
low vibration level (10-60 Hz 0.15mm displacement peak
amplitude / 60-500 Hz 2g).

When the THUM adapter is used on wired devices that are
subject to vibration levels greater than 2 g, it is
recommended that the THUM adapter be remotely
mounted.

Temperature Limits

Operating and Storage Limits: -40 to 85_C
(-40 to 185_F)

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