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Reference Manual

00809-0100-4811, Rev DA

Section 3: Installation

January 2015

Installation

3.3 Before you install

3.3.1 Alarm and write protection switches

Electronic boards are electrostatically sensitive. Failure to observe proper handling precautions

for static-sensitive components can result in damage to the electronic components. Do not

remove the electronic boards from the Rosemount 3300 Series Radar Transmitter.

Note

To ensure long life for your radar transmitter, and to comply with hazardous location installation

requirements, tighten covers on both sides of the electronics housing.

Table 3-1. Rosemount 3300 Series Radar Transmitter Switch Settings

Table 3-2. Analog Output: Standard Alarm vs. Saturation Values

Table 3-3. Analog Output: NAMUR-Compliant Alarm Values vs. Saturation Values

The transmitter monitors its own operation. This automatic diagnostic routine is a timed series

of checks repeated continuously. If the diagnostic routine detects a failure in the transmitter,

the 4–20 mA output is driven upscale (high) or downscale (low) depending on the position of

the Alarm switch.

Security write protection prevents unauthorized access to configuration data through the

Rosemount Configuration Tool (RCT) software, a Field Communicator or AMS

Suite software.

Switch bank Description Default setting Position settings

Alarm 4–20 mA alarm output High High, Low

Write protect Security write protection Disabled (OFF) ON = enabled,

OFF = disabled

Level 4–20 mA saturation values 4–20 mA alarm value

Low 3.9 mA 3.75 mA

High 20.8 mA 21.75 mA

Level 4–20 mA saturation values 4–20 mA alarm value

Low 3.8 mA 3.6 mA

High 20.5 mA 22.5 mA

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Astar HT-3300 Spezifikationen Seite 30