Model 32 - Level Meter for tank monitoring and control.

Use this versatile instrument to continuously measure, display, transmit and control liquid level in storage tanks or pumping stations.

Mount the non-contacting ultrasonic sensor above the liquid being measured and install the watertight Electronics enclosure nearby. Features a user-friendly keypad calibration system, two digital displays, an isolated 4-20mA output and 3 programmable control relays. Calibration is easy with the built-in 3 button keypad. The model 32 offers simple menu selection of measurement units (gallons, liters etc.), calculates volume in horizontal round tanks, or flow rate (and total) through any flume or weir. For hazardous locations, the ultrasonic sensor is rated Intrinsically Safe with an optional safety barrier. The standard PVC Sensor (optional Teflon) is rated for measurement ranges up to 32 ft/10 m, or use the optional PVC Sensor rated for 50 ft/15.6 m measurement range. Options include 3 additional control relays (6 total) and a built-in 50,000 point Data Logger.
User-Friendly Calibration System
Isolated 4-20mA (1000 ohm)
False Echo Rejection
3 Programmable Control Relays
Electrical Surge Protection
Intrinsically Safe Sensor Option

PUMP STATIONS - Pump Level Controller

Pump Level Controller for Lift Stations and Wet Wells. Ideal for pump stations, wet wells and tank level control with a non-contacting ultrasonic sensor mounted above the liquid. The PSL Level Controller has 6 independently programmable control relays for pump or valve control, level alarms, dialers, temperature alarm and echo-loss alarm.

Mount the sensor in the tank or wet well and install the watertight electronics in the control room or any location within 500 ft / 150 m. Use the simple, built-in calibrator to set up measurement range and relay set points. Or use the software to calibrate from your PC by RS232 connection, or through modems over a regular phone line.

Relay/Pump run time data is stored automatically by the instrument. Retrieve reports directly through the PSL display, or through its RS232 output. The Remote software program displays a pump run time graph and will output data to a spreadsheet file or directly to a Microsoft Excel spreadsheet with DDE.

For hazardous locations, the ultrasonic sensor is rated Intrinsically Safe with an optional safety barrier. The standard PVC Sensor (optional Teflon) is rated for measurement ranges up to 32 ft / 10 m, or use the optional PVC Sensor rated for 50 ft / 15.6 m measurement range.

Controls, Transmits and Displays
Non-Contacting Ultrasonic Sensor
6 Relays for Pump Control and Level Alarms
Programmable Pump Alternation
Built-in 3-Key Calibrator
RS232 output and Windows Software for calibration and real-time monitoring
Logs and Reports Relay Run Times
Isolated 4-20mA output (1000 ohm)

Level Transmitter Model L25

L25 transmitter displays, controls and transmits level. Mount the non-contacting ultrasonic sensor at the top of your tank, and the compact, watertight electronics/display enclosure at a convenient location nearby. Operators can calibrate the L25 with its 2-button Keypad, without climbing the tank. Use the built-in relay for level control or alarm, the large 4-digit display for local indication, and the isolated 4-20mA output to to transmit level to a PLC.The standard ultrasonic Sensor measures liquid levels up to 32 ft. (10 m), and includes automatic temperature compensation. Choose the optional all-Teflon sensor for chemical compatibility, or one rated to 50 ft (15.6 m) range. All ultrasonic sensors are available with optional intrinsic safety for installation in hazardous rated locations. The L25 can also be ordered with gauge-type pressure sensors for special applications.

Standard features include:

sensor - PZ32T, PVC and teflon, 32 ft / 10 m range
sensor cable - 25 ft / 7.6 m coaxial
enclosure - watertight, dust tight NEMA4X (IP67) polycarbonate
programming - built-in 2 button keypad
calibration - selectable Level or Range mode
display - large 4-digit LCD
temperature compensation - automatic
output - isolated 4-20mA (1000 ohm)
1 signal Relay - 1 amp
power input - 100-130VAC 50/60Hz, 5 watts maximum
electrical surge protection
sensor, AC power and 4-20mA output
1 Manual - Installation and Operation

How It Works....

The ultrasonic sensors are mounted at the top of a tank or in a position above the liquid being measured. The sensor continuously transmits pulses of high frequency sound (typically 42 kHz) which travel away from the sensor, hit the surface of the liquid and return to the sensor.

The instrument electronics measure the time it takes from transmitted sound to return of the echo. With reference to the speed of sound in air, the exact distance of the liquid surface from the sensor can be calculated with high accuracy (±0.25% of maximum range).
Since the speed of sound is affected by air temperature, our ultrasonic level sensors include a built-in temperature sensor. Level/distance measurements are automatically temperature compensated throughout the operating temperature range of the sensor.

The sensor should be positioned so that it has an clear "view" of the liquid surface and away from ladders, pipes or other obstructions. we recommend 300 mm for every 3 m depth ( 1 ft. from the sidewall for every 10 ft. depth) . False echoes from agitators (sweeping under the sensor), turbulence and waves can be filtered and disregarded by the instrument.

DL2.0 Differential Level Monitor/Control for
Mechanical Barscreens at wastewater treatment plants, pump stations and combined sewer systems.

It Displays, Transmits
and Controls
Differential Level
and more...

Reduce costs and simplify instrumentation at treatment plant headworks. The DL2.0 can measure both differential level plus flow through a flume. Install one Sensor on each side of a mechanical barscreen to continuously monitor, transmit and control level. Use the built-in control relays or 4-20mA outputs to automatically activate the barscreen rake at preset levels.

  • Measures Level, Differential Level and Open Channel Flow
  • Displays Up and Downstream Level
  • Two Non-Contacting Ultrasonic Sensors
  • Large White Backlit LCD Display
  • Three Isolated 4-20mA Outputs
  • Built-in Simple 5-Key Calibratior
  • 2 Programmable Control Relays
  • Optional 2 Million Point Data Logger
  • Optional Intrinsically Safe Sensors


An affordable system, ideal for pump stations, and tank level control with a non-contacting ultrasonic sensor mounted above the liquid. The Level Controller has an integrated digital display, and 2 independently programmable set points for pump control, valve control, or level alarms, with a protection rating of IP67, and accuracy of +2%. Options for 1300 (4.26ft), 3400 (11.15ft), or 6000mm (19.68ft). Operating voltage 9~30VDC. M12 cable connector with 5m (16.4ft), 10m (32,8ft), or 20m (65.6ft) cable optional.