Model LXT-380 Universal Water Analyzer for Hazardous Location

SKU: LXT-380

LXT380 Explosion Proof

The Model LXT380 ​transmitter is a single or dual channel, intelligent, multi-parameter designed for the online continuous measurement of pH, ORP, Specific Ion (pION), dissolved oxygen, free chlorine, total chlorine, conductivity and resistivity. The Model LXT380 Tramsitter digitally communicates with the SP3X digital sensor, automatically configuring the trasmitter’s menues and display screens to the measured parameter. The LXT380 tramsitter can be Loop powered or 4-wired DC powered. The standard configuration has a 4-20 mA and a serial communication port with MODBUS RTU output. Alarm relays option is only available on 4-wired DC powered transmitters. LXT380 Transmitter loop is available in FM, ATEX and IECEx certifications.

  • Brand


Teledyne Analytical TAI Liquid


LXT380 Configuration  Builder (LXT-380-AB-CDE-F)

​LXT3​80 ​A​ ​B ​C ​D ​E ​F​
​​​​​​​​​​​​​​​1st Channel​

​ ​ ​ ​ ​ ​ ​ ​ ​
​​​​​​1  SP3X Digital Sensor, pH, ORP, pION, DO*, ppb DO, Conductivity, Resistivity, Free Chlorine, Chlroine Dioxide
​​​​​​​​​​​​​2nd Channel
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
​​​​0  No Second Channel
​​​​1  SP3X Digital Sensor, pH, ORP, pION, DO*, ppb DO, Conductivity, Resistivity, Free Chlorine,
Chlorine Dioxide

​ ​ ​ ​ ​ ​ ​ ​ ​ ​
​​​0  (LOOP) 2 Wire – Single Channel Only
​​​1  (DC) 4 Wire – DC Power
​ ​ ​ ​ ​ ​ ​ ​ ​
​​0  No Relay
​​1  3 Relays – DC Power Only
​ ​ ​ ​ ​ ​ ​
0  4-20 mA & MODBUS**
​1  HART®
​2  2 x 4-20 mA & MODBUS**
​3  2 x 4-20 mA & HART®
​ ​ ​
​00  SS316 No Approval
​01  SS316 FM Approval
​02  SS316 ATEX/IECE​​x Approval – Single Channel
​03  SS316 ATEX/IE​CEx Approval – Dual Channel

* Galvanic DO must be single channel due to solution ground interference
**MODBUS – AC/DC version only​


  • Explosion proof enclosure
  • Fully certified for Hazardous area location when purchased with SP3X and appropriate Barrier selection.
  • Enclosure Material: Electro Polished SS316
  • Capable of monitoring two sensor inputs
  • User-settable input and output parameters
  • 4-20mA Modbus RTU* or Optional HART 7 Protocol
  • 128 X 64 Pixels (2.75” x 1.5”) LCD, Black/Grey background on loop powered instruments.
  • Blue/White background LED backlight on 24VDC (Direct Current Powered) instrument
  • Mounting: 2x M4 (3/16”) and 3 x ¾” FNPT interface entries
  • Compatible with SP3X Intelligent sensors – Automatic Sensor recognition.
  • Available Measurements: pH, Oxidation/Reduction Potential (ORP), Dissolved Oxygen (DO), Conductivity (CD), Toroidal Conductivity (CDT), Resistivity (RS), and Specific Ions (PION)
  • Power: Loop Powered or 24VDC (Direct Current)​


​Input Sensors ​​SP3 or SP3X Smart Sensor
​Input Ranges​​​​ ​pH:
​-1 to 15 pH
-1500mV to +1500mV
000.1 to 999.9, Auto Ranging: ppb, ppm, ppt
000.1 to 999.9, Auto Ranging: ppb, ppm, %SAT, mg/L
0.055µS to 2.00S, Auto Ranging: µS, mS, S
0.001 to 20.00 meg-ohms
0 to 4,000 NTU, Auto Ranging: NTU, FNU, mg/L, ppm, % Solids
​Temperature ​-4° to 185°F (-20° to 85ºC)
​Accuracy ​pH:
​0.02 pH
± 1 mV
Contact factory for pION specification sheet
2% of Calibrated Range
2% of Calibrated Range
2% of Calibrated Range
4% of Calibrated Range
± 0.54°F (0.3°C)​
​Enclosure Electro Polished SS316, Type 4X, IP66, Weatherproof
5.5″L x 5.1″W x 5″D (13.97 x 12.95 x 12.7 cm)
5.5 lbs (2.5 kg)
​Interface Ports ​1/2″ FNPT, 3 nos.
​Environmental Conditions ​Ambient Temp:
Storage Temp:
Relative Humidity:
-4º to 131ºF (-20º to 55ºC)
-22º to 185ºF (-30º to 85ºC)
0 to 80% Non-Condensing
​Display ​2.0″ x 1.1″ (128 x 64 pixels) LCD
Black/Grey background on loop powered units
Blue/White background LED back lit on 4-wire DC units
​Menu Selection Magnetic Pen
​Input Power ​Loop Powered, 24 VDC, 600 ohm max load (18-36 VDC @ 35 mW minimum)
4-wired 24 VDC (18-36 VDC @ 250 mW minimum)
AC Not Available
​Signal Outputs ​4-20 mA, Fault Condition: 3.5 mA, 22 mA or none
HART® (Optional)
Alarm Relays (Optional): Three (3) SPDT Form C, 250 VAC, 3 AMP resistive maximum relays, user configurable as Hi/Lo or Fault Alarms
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