Installation guide

Quick Installation Guide
00825-0100-4825, Rev DB
February 2011
Rosemount 248
9
STEP 3: SOFTWARE INSTALLATION (248C ONLY)
1. Install the 248C software
• Place the 248C CD-ROM in the drive
• Run setup.exe from Windows NT, 2000, or XP
2. HART interface Box (248C1 option): Connect the HART Interface Box to PC and 248
transmitter per instructions located on the HART Interface Box label
3. Install Serial HART modem (248C2 option) or USB HART modem (248C3 option).
Please see instructions accompanying modem hardware.
4. For USB modem (248C3 option): Upon first use, configure appropriate COM ports within
248C software by selecting “Port Settings” from the “Communicate” menu. The USB
modem driver emulates a COM port and will add to available port selections in the
software’s drop-down box. Otherwise software defaults to first available COM port, which
may not be correct.
STEP 4: CONNECT THE WIRING
• Wiring diagrams are located on the top label of the transmitter.
• An external power supply is required to operate the transmitter.
• The power required across the transmitter power terminals is 12 to 42.4 V dc (the power
terminals are rated to 42.4 V dc). To prevent damaging the transmitter, do not allow
terminal voltage to drop below 12.0 V dc when changing the configuration parameters.
Power the Transmitter
1. Connect the positive power lead to the “+” terminal. Connect
the negative power lead to the “–” terminal.
2. Tighten the terminal screws.
3. Apply power (12 – 42 V dc).
Figure 2. Power, Communication, and Sensor Terminals
Rail Mount
Transmitter
Threaded Sensor
Connection Head
Threaded Style
Sensor
Standard
Extension
Threaded
Thermowell
+
_
Sensor Terminals
Power/Communication
Terminals
00825-0100-4825.fm Page 9 Friday, February 18, 2011 11:49 AM