Flocorp LTRP-2 Ranger Two Ultrasonic Level Transmitter

Ultrasonic Level Transmitter Flocorp LTRP-2 Ranger Two is designed for level and distance measurement in remote monitoring and other difficult outdoor applications. The Ranger Two™ features surge protection which assures reliable performance in lightning prone areas.

The Ranger Two™ is able to measure the distance of level with a range of 1ft. up to 30ft. Features include a stainless steel housing for rugged indoor or outdoor use, surge protection, and the ability to connect to one sensor up to 32 sensors optimized with RS-485 output to the CONNEX 3D Cellular Monitor. Serial data is addressable in MODBUS RTU protocol and options include ASCII. These all-weather sensors survive submersion and provide years of maintenance-free service.

Ultrasonic Level Transmitter Flocorp LTRP-2 Ranger Features and Benefits

  • Long-range, short dead band
  • Unaffected by optical factors like color and transparency
  • Surge protection
  • Low power consumption
  • Stainless 316 housing
  • Connect to one sensor, up to 32 sensors
  • Optimized with RS-485 output
  • Narrow beam with adjustable sensitivity
  • Temperature Compensated
  • No warmup mode, ready to measure with 1 sec.

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Maximum Range 30 feet (9.1 m)  


Digital: 0.0034 inches (0.086 millimeters); Analog:4099 steps (0-10 VDC), 3279 steps (4-20 mA)
Optimum Range 20 ft. (6.1 m)
Ready Time < 1 second after power application
Deadband Typ. < 10 in. (254 mm)


2m standard length, potted into sensor body, PUR with shield and drain, other lengths available
Beam Width 7.5° 1° off axis @ -3db
Configuration Stored in sensor’s non-volatile memory


CE, RoHS, Surge protection exceeds IEC 61000-4-5
Data Output Modbus, ASCII streaming, specials
Transducer 75 kHz, Ruggedized Piezoelectric  


Compatible with the CONNEX 3D™ Cellular Monitor
Protection NEMA-4X, NEMA-6P, IP68
Target Requirements
Adjustment SenixVIEW PC Software


Detects liquid surface, flat or curved objects. Surface must reflect ultrasound to sensor
Case Material 316 Stainless Steel
Temperature -40 to 158 F (-40 to 70 C)



Distance Ranges (*)

Affected by size, shape, orientation of target (sound level reflected back to sensor), environment

Restrict use to Optimum Range when using over a wide range of environmental conditions

Humidity 0 to 100% operating
Compensation Selectable temperature Compensation
Data Resolution 0.0068 in. (0.172 mm) per count


Repeatability Nominal 0.2% of range @ constant temp. Affected by target, distance, environment


Sensor should be oriented perpendicular to liquid surface for maximum reflection

Update Rate

10 Hz (100 ms), Software adjustable; also affected by filter selections


Unaffected by target color, light, transparency or other optical characteristics

Modbus Protocol

Modbus RTU, 9600 to 115200 baud, 8 data bits, 1 stop, no parity

Specifications are subject to change without notice.


ACSII Protocol

Five ASCII distance characters followed by Carriage Return; for single sensor connections only

RS-485 Networks

From 1 to 32 sensors can operate in an addressable multi-drop network

Download Datasheet: Flocorp Ranger Two™ LTRP-2 Ultrasonic Level Transmitter

Ref: Flo-corp.com

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