Operating instructions

12
There are ground terminals on the inside and outside of the trans-
mitter. Either of these terminals may be used.
Use 600V insulated PVC wire for grounding.
4.7.6 Power Supply Voltage and Load Resistance:
When configuring the loop, make sure that the external load resis-
tance is within the range (see Figure 14 below).
The transmitter supply voltage should be:
• Standard: 11.9 to 45 Vdc
• HART Communication: 17.4 to 45 Vdc
Maximum loop current is 24mA.
Load resistance R = (E-11.9) / 0.022 (E = Power Supply Voltage)
4.8 Mechanical Considerations:
Figure 15 is a dimensional drawing for the 3100. Figure 16 shows
how the A-630 angle bracket is mounted to a pipe.
4.8.1 Mounting:
Avoid installing transmitters in environments with excessive vibra-
tion. If it cannot be avoided it is highly recommended to provide
adequate support when mounting.
4.8.2 Transmitter Access:
When selecting the installation location, accessibility must be
taken into consideration.
• Housing rotation: The housing can be rotated 90°.
• Wiring terminals: The cover and wiring terminals are easily
accessible.
• LCD/Circuits: Install the transmitter in a location where it can
be seen. For transmitters without an LCD, the cover and
jumpers are easily accessible.
4.9 Environmental Considerations:
4.9.1 Ambient Temperature:
The transmitter ambient temperature range is 4 to 180°F (-20 to
60°C). If the ambient temperature is going to exceed the temper-
ature range, precautions must be taken to keep the temperature
within the temperature limits.
4.9.2 Toxic and Moist Environments:
The 3100 housing will protect the transmitter against moisture or
toxic material. The electronic circuit is separated from the termi-
nals. The housing covers have o-rings that seal the housing, but
moisture can penetrate the housing through the conduit. The
transmitter should be mounted in a position to prevent moisture
from entering the housing through the conduit.
4.9.3 Installation in Hazardous Location:
The transmitter is designed with an explosion-proof housing.
Installation environment must not exceed the explosion-proof rating.
5. ON-LINE OPERATION:
5.1 Overview:
This chapter describes how to configure the 3100 Smart Pressure
Transmitter. The transmitter can be configured in On-Line or Off-
Line mode. In On-Line Mode a compatible HHT or PC configura-
tion device must be used.
5.2 Safety Messages:
For added operator safety please pay specific attention to proce-
dures outlined in this manual listed under the warning symbol
( ).
R=(E-11.9)/0.022
HART Communication
Applicable Range
Figure 14
Figure 13: 3100 Smart Pressure Transmitter
Internal and External Ground Terminal
Figure 15: Model 3100 Outline Dimension Drawing
Figure 16: A-630 Mounting Bracket