Lumenite MLXT 4220 Transmitter
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Lumenite MLXT 4220 Transmitter
The MLST / MLXT 4220 controls are Lumenite’s stand alone microprocessor based RF capacitance continuous monitoring level transmitters. These push button calibrated sanitary and industrial units provide 4-20mA, 20-4mA and 0-5VDC analog outputs proportional to material level in any shaped tank. The MLST / MLXT Temp 4220 is Lumenite’s combination level / temperature transmitter for both sanitary and industrial applications. In addition to having all of the features of the original design, the MLST/MLXT-Temp 4220 provides 2 separate 4-20mA outputs measuring level and temperature with one tank connection. Additional Technical Information for MLST/MLXT-Temp 4220 : > Temperature transmitter ranges from -100 to +1000F or C > Provides 2 isolated 4-20mA analog outputs, one proportional to level, the second proportional to temperature > Output current error of 0.005%
Lumenite MLXT 4220 Transmitter
The MLST / MLXT 4220 controls are Lumenite’s stand alone microprocessor based
RF capacitance continuous monitoring level transmitters. These push button calibrated sanitary and
industrial units provide 4-20mA, 20-4mA and 0-5VDC analog outputs proportional to material level in
any shaped tank.
The MLST / MLXT Temp 4220 is Lumenite’s combination level / temperature
transmitter for both sanitary and industrial applications. In addition to having all of the features of the
original design, the MLST/MLXT-Temp 4220 provides 2 separate 4-20mA outputs measuring level and
temperature with one tank connection.
Additional Technical Information for MLST/MLXT-Temp 4220 :
> Temperature transmitter ranges from -100 to +1000F or C
> Provides 2 isolated 4-20mA analog outputs, one proportional to level, the second proportional to
temperature
> Output current error of 0.005%
Technical Information for MLST / MLXT 4220 and
MLST / MLXT Temp 4220
> Resolution to better than 1 part in 10,000
> Accuracy and repeatability to less than 0.1% of span
> Microprocessor based transmitter with on board digital to analog conversion
assuring negligible output current error of 0.003%
> Linearity of better than 0.003% over the industrial temperature range of
-20F to 160F
> Designed with the most up to date surface mount, integrated circuits and
components
> Standard span range of 0.0001 picofarads to 15,000 picofarads. This allows the
series 4220 to span 4-20mA over 1 inch of water, (high sensitivity) or hundreds of
feet of water, (low sensitivity)
> Non interacting zero and span adjustments
> Cancel CoatTM circuitry and superior resolution eliminate the readout errors
caused by conductive coatings on the sensing probe
> Calibration and programming accomplished with only 3 push buttons
> 3-digit on board display allows 4-20mA, 20-4mA and 0-100% calibration and
run modes
> Operator has choice of 4-20mA (0-100%), 20-4mA (100%-0) and 0-5VDC
operation
> Dampening circuitry eliminates ”display jittering” caused by agitated liquids
> Standard error messages 01 and 02 indicate shorted probe (01) and
disconnected probe (02)
> Extensive RFI, EMI and transient protection verified by independent laboratory
tests, available upon request
> Electronics may be remote mounted hundreds of feet from the probe
> Supply voltage range of 12 volts to 36 volts D.C. optional 115VAC and 230VAC
inputs available
> Maximum loop resistance of 600 OHMS with 24VDC power supply
> Nema 4X stainless steel sanitary housing with ”see through window” and every
type of sanitary tank connection (sanitary applications)
> Nema 7 rated cast aluminum instrument housing with ”see through window”
UL, CSA and Factory Mutual approved (industrial applications)
> Industrial Tank Mountings include : Standard 3/4” NPT, Optional 1-1/2”NPT
1” through 4” steel or stainless steel flange
(any special tank connections upon request)