Emerson Transmitter 350 Mode D’Emploi

Please consult factory before attempting this procedure.  Document transmitter’s serial number for 

better assistance.

  The following menu is the 1 –point Calibration procedure.  

This procedure was designed to help the user get up and running in an emergency.  If electronics have to be 

shared in an emergency the following procedure guides the user through a “quick” calibration procedure that 

does not require level simulation but instead works with the current level (1 point) in the vessel/tank.

1. Enter into the “1pt Cal” menu by changing the “no” to a “yes” and pressing enter.

2. The first menu is “SelLngth” or select length.  This is not the measuring range but the overall probe 

length.  This information can be found on the label of the instrument housing.  (See Section 2.1 Product 

Identification).  Enter the value in using the up or down arrows and press enter.

3. The second menu is “Sel LRV” or select lower range value.  Most of the time this value is at 0.00in.  It is 

recommended to leave this value at zero and press enter.

4. The next menu is “Sel URV” or select upper range value.  Enter in the desired measuring range and press 

enter.

5. The “Energy” menu is next.  This parameter controls the amount of energy being sent down the sensor 

probe.  Longer sensor probes require more energy shorter sensor probes require less energy.  Please 

contact the factory for guidance with this parameter.

6. The “DCOffset” menu is the signal to noise ration.  Please contact the factory for guidance with this 

parameter.

7. The “HoldTime” menu is the amount of time the energy being sent down the probe is sustained.  Note: 

a longer hold time can increase the deadband near the electronics.  Please contact the factory for 

guidance with this parameter.

8. The last menu is the “CrntLvl” or current level menu.  Enter the known current level in the vessel/tank 

(in engineering units) and press enter. The calibration should take place and the transmitter should be 

operational.  If the next menu appears then the operation was successful.  If the menu reverts back to 

the beginning of the “1pt Cal” menu then the operation was unsuccessful.  Further troubleshooting may 

be necessary if the operation is unsuccessful.  See Section 8 for troubleshooting guide.

The 1-point calibration may not be within the published accuracy specification.   Again this procedure 

was designed to get a critical application up and running.  A recalibration (two point calibration) may be 

highly desirable as soon as the opportunity presents itself.

  If the level gage indicator and level transmitter reading do not match or appear 

to be incorrect by a few inches then the “LvlAdjst” function can be utilized.  Enter into the menu and simply use 

the up and down push buttons to enter the current level being displayed by the level gages visual indicator and 

then press enter.  The transmitter will adjust the calibration and output accordingly.  Note: Be careful make sure 

this is what is desired.

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