Emerson Transmitter 350 Mode D’Emploi

The LTM-Series are 2-wire electronic field 

instruments, suitable for installation in hazardous 

and non-hazardous locations.  Testing and 

certification has been obtained from different 

agencies for installation in such areas.  This 

instrument is designed to measure and transmit an 

analog and/or digital signal proportional to liquid 

level in a tank.  The complete assembly includes an

explosion-proof enclosure and attached sensor tube 

and a magnetic float.  The LTM-Series are available 

in a variety of lengths and wetted materials to 

accommodate many different applications.

Figure 1. Example   label/name plate

The product can be identified by the stainless steel 

label that is located on the side of the transmitter 

enclosure/housing.

The label can be read as follows:

wwww = Any hazardous location area classification 

markings that the instrument is approved for.

ZZ/ZZ = Born on date; the2 digit month and 2 digit 

year the instrument was shipped to the customer.

AAAA = The specific serial number assigned by 

Magtech for complete traceability.

BBBB = The overall probe length of the instrument.

    Note:  THIS IS NOT THE MEASURING RANGE.

XXXX = The measuring range of the instrument.  

The 0 and 100% (4/20mA) output range.

YYYY = The end user specified tag number (only 

when specified).

LTM-Series transmitters generally have two 

configurations:

1. Gage Mounted:  Where the transmitter is

mounted on the outside of a magnetic level 

gage and strategically located within a 

certain longitudinal distance from the 

transmitter sensor probe and a magnetic 

float is placed inside the level gage.

2. Standalone (or Direction Insertion Type):  

Where the transmitter has a magnetic float 

directly around the transmitter sensor 

probe and the probe is directly inserted into 

a tank/vessel.

In either configuration as the tank level changes, 

the float tracks the change and continuously 

activates the sensor probe.  The electronics process 

the change in signal and output an analog and/or 

digital signal.  This output is precisely the liquid level 

in the tank.

2

S/N  AAAA / OL  BBBB

            MODEL  LTM- 350-G-XXXX

              TAG  YYYY

ISE-MAGTECH