DLT 2.0 Differential Level Transmitter

  • Maximum Range​ of Sensor
    15 ft (4.57m)
  • Accuracy​
    ±0.25% of Range
  • Output​
    Isolated 4-20mA, 1000 ohm load maximum
  • Data Logger
    2 million point logger with USB output and Windows software
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DLT 2.0 Differential Level Transmitter


Reduce costs and simplify instrumentation at treatment plant headworks. The DLT 2.0 can measure both differential level plus flow through a flume. Install one Sensor on each side of a mechanical bar screen to continuously monitor, transmit and control level. Use the built-in control relays or 4-20mA outputs to automatically activate the bar screen rake at present levels.

The DLT 2.0 is a simple solution for bar screen level control at wastewater treatment plants, pump stations and combined sewer systems. It includes two non-contacting ultrasonic sensors to measure level. With sensors positioned above a channel, up and downstream from the bar screen, the DLT 2.0 can display and transmit differential level. The downstream sensor can also be installed above a flume or weir to measure and totalize open channel flow.

Three 4-20mA outputs are configured to transmit upstream level, downstream level (or flow) and differential level. Built-in relays can be calibrated for level control, differential level control or open channel flow.

Other DLT 2.0 applications include two-tank inventory where you can monitor level in two tanks with one instrument. The DLT 2.0 will alternate display of level in both tanks plus transmit 4-20mA outputs. Use the built-in relays to activate alarms or level controls. This versatile dual-sensor instrument can also be configured as a submergence alarm for Par shall flumes.

General Specification
Electronics Enclosure 

Watertight and dust tight NEMA4X (IP 66) polycarbonate with clear, shatterproof cover 

Accuracy ±0.25% of Range or 2 mm (0.08") whichever is greater, Repeatability and Linearity: ±0.1% 

White, backlit matrix - displays upstream, downstream and differential level, open channel flow and totalizer, relay states, operating mode and calibration menu

Programming built-in 5-key calibrator with English, French or Spanish language selection
Power Input 100-240VAC 50-60Hz
Output Three Isolated 4-20mA (upstream and downstream level (or open channel flow) and differential level, 1000 ohm load maximum
Control Relays Qty 2, rated 5 amp SPDT, programmable for level control, differential control, or flow proportional pulse
Electrical Surge Protection  Sensor, 4-20mA and AC power input
Operating Temp. (electronics) -5° to 140°F (-20° to 60°C)
Sensor Specification
Maximum Range 

15 ft (4.57 m) with standard PZ15 sensor 

Deadband (Blanking) Programmable, Minimum 8"
Beam Angle

Operating Frequency

92 KHz

Exposed Materials PVC
Operating Temperature  40° to 150°F (-40° to 65°C) with automatic temperature compensation
Operating Pressure 20 psi (1.35 bar) maximum
Sensor Cable RG62AU coaxial

Submerged Flow Alarm

Two-Tank Inventory

Barscreen Differential

Barscreen Differential plus Open Channel Flow