Emerson 250, 350 operation manual

Page 12

4.Remote Mount Electronics Option. Due to process temperature, vibration or accessibility the housing/electronics of the LTM transmitter can be remote mounted as far as 25 ft. The housing/electronics are supplied with a pipe- mount bracket that can be mounted most nearby posts or pipes with hose clamps. The drawing below depicts a gage mounted transmitter in the top mount remote electronics configuration.

Figure 12. Gage mount transmitter in the top mount remote

electronics configuration.

NEVER install the sensor probe inside an insulation blanket that may be around the level gage. This will overheat the sensor probe and cause failure.

NEVER bend, bow or cause a kink in the sensor probe, this will damage the instrument and void the warranty. Do not attempt to straighten the sensor probe, this will not help the instrument work. If the shipment arrives damaged please file a claim with the shipping company and contact the factory to arrange for a replacement.

There are a variety of ways to install a standalone transmitters (i.e. crane, lift, etc…), the basic rule to remember when installing an LTM transmitter is DO NOT DAMAGE the sensor probe, this will void the warranty. If damage is suspected please contact the factory and be prepared to provide pictures.

In REMOTE MOUNT electronic options please support the sensor probe at the elbow/condulet and then every 3 feet (depending on length of cable). Support at every 2 feet may be required if explosion proof conduit is utilized by the end user.

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Instructions Table of Contents Icon Key LTM-350 has Hart ProtocolWarranty WarrantyTransmitter Configurations Transmitter OverviewGeneral Description Product IdentificationGage Mounted Transmitter Standalone TransmitterTransmitter with a Stilling-well Transmitter Description Detailed Description Technology Theory of Operation Configuration options must be chosen at quoting stage Basic Transmitter Block DiagramInstallation Gage Mount InstallationStandalone Installation General Installation GuidelinesPossible transmitter configurations Clamps do not have to meetPage When insulating gages Insulation against extreme heat/coldField Wiring Recommended Loop WiringFollowing is the Hart Topology Area Classification Installation Safety Transmitter Specifications Electronic SpecificationsSensor Probe Specifications Hazardous Locations / General RatingsMenu Structure and Features Pushbutton OperationMenu Structure Main Screen scrollingFollowing is the LTM-250/350 LCD Menu Flowchart Menu Structure … Select Alarm Description Select PVChange Range LCD Menu examples G R n g e Select Lower Range Value LRVDescription Trim SensorOffset M S n s r F sDescription Trim Digital-Analog-Converter DAC Test LoopExit LCD Menu examples I m D a C T L o o p I t ?Features Scroll or Level or IntrfaceMA Out Or % Range Features Exclusive to the LTM-250/350 models Following is a flow chart of the advanced menusFeatures Exclusive to the LTM-250/350 models Features Exclusive to the LTM-250/350 models Features Exclusive to the LTM-250/350 models Features Exclusive to the LTM-250/350 models LTM Troubleshooting TroubleshootingTransmitter Calibration CalibrationPower Supply Troubleshooting General TroubleshootingPhysical and water damage are not covered under warranty LTM-350 has Hart Protocol Hart Protocol General InformationHart Protocol Menus and Flowchart … USLWhen Interf is PV, Interf is displayed
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