Rosemount 3051, Быстрый старт

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Quick Start Guide
9
January 2017
Use the following procedure to change the switch configuration:
1. If the transmitter is installed, secure the loop, and remove power.
2. Remove the housing cover opposite the field terminal side. Do not remove
the instrument cover in explosive atmospheres when the circuit is live.
3. Slide the security and alarm switches into the preferred position using a small
screwdriver.
4. Reattach the transmitter cover. The cover must be fully engaged to comply
with explosion-proof requirements.
Figure 5. Transmitter Electronics Board
A. Alarm
B. Security
2.4 Connect the wiring and power up
Figure 6. Transmitter Wiring Diagrams (4–20 mA)
A. 24 Vdc supply
B. R
L
≥
250
C. Current meter (optional)
Shielded twisted pair cable should be used for best results. Use 24 AWG or larger
wire that does not exceed 5,000 feet (1500 meters) in length. If applicable,
install wiring with a drip loop. Arrange the drip loop so the bottom is lower than
the conduit connections and the transmitter housing.
Without LCD display With LOI or LCD display
A
B
A
B
C