Operation - Emerson Rosemount 935 Quick Start Manual

Quick Start Guide
2

Operation

2.1 Safety precautions
After powering up, the detector requires minimal attention in order to
function properly, but note the following:
WARNING
Follow the instructions in this document; refer to the drawings and
specifications issued by the manufacturer.
WARNING
Do not open the detector/source housing while power is applied.
WARNING
Disconnect external devices, such as automatic extinguishing systems,
before carrying out any maintenance tasks.
2.2 Power up
WARNING
Prior to operating or maintaining the detector, follow
Procedure
1. Ensure that the source and detector are connected to power.
2. Ensure that the 4-20 mA wiring meter is connected to the detector.
3. Power up the system 18 to 32 Vdc.
After sixty seconds, the current meter indicates 4 mA.
Postrequisites
After powering up, zero calibrate the system. See
22
April 2021
Safety precautions.
Zero calibrate.
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