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7.2 Features (Exclusive to the LTM-250/350 models)
Please consult factory before attempting this procedure. Document transmitter’s serial number for better assistance.
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
Level Adjustment (LvlAdjst): 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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