SMAR TT301, Operation, Maintenance & Instruction Manual

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Section 1
1.1
INSTALLATION
General
The overall accuracy of temperature and other measurements depends on several variables. Although
the transmitter has an outstanding performance, proper installation is essential, in order to maximize its
performance.
Among all factors, which may affect transmitter accuracy, environmental conditions are the most
difficult to control. There are, however, ways of reducing the effects of temperature, humidity and
vibration.
Mounting
Temperature fluctuation effects can be minimized by locating the transmitter in areas protected from ex-
treme environmental changes.
In warm environments, the transmitter should be installed to avoid, as much as possible, direct expo-
sure to the sun. Installation close to lines and vessels subjected to high temperatures should also be
avoided. For temperature measurements, sensors with cooling-neck can be used or the sensor can be
mounted separated from the transmitter housing.
Use of sunshades or heat shields to protect the transmitter from external heat sources should be
considered, if necessary.
The transmitter may be mounted in two basic ways, as follows:

Separated from the sensor, using optional mounting brackets;

Mounted on the sensor assembly.
Using the brackets, the mounting may be done in several positions, as shown on Figure 1.1.
Measurement error can be decreased by using proper wires (see Section II, Operation).
ALLOW 150 MM MINIMUM FOR LOCAL
ZERO AND SPAN ADJUSTMENT WITH
MAGNETIC TOOL.
COMMUNICATIONS
TERMINAL
PLUG
CONDUIT
CONNECTION
MOUNTING BRACKET
PIPE 2"
PLUG
WALL OR
PANEL MOUNTING
FOR WALL MOUNTING
2 EXPANSION ANCHOR -
2 HEXAGON SCREW - S8
3/16”X70
2 BOLT AND NUTS - 1/4”X30
NOT INCLUDED
FOR PANEL MOUNTING
Figure 1.1 - Dimensional Drawing and Mounting Positions