Parallax eTape Chemical Liquid Level Sensor

Solid-state eTape sensors make it easier to monitor the height of fluids — liquid or a fine powder — in a container. Placed vertically in a container, eTape senses the hydrostatic pressure applied by the fluid to the portion of the sensor that is submerged. 

eTape sensors output a value in a continuous range corresponding to the fluid level along the entire length of the sensor, ideal where a single-point fluid level detection is not enough.  The slim, low-profile sensor has no moving parts and fits unobtrusively where there may not be enough room for mechanical float devices.

The Chemical eTape Liquid Level Sensors are enclosed in an FEP (Teflon) envelope rated for chemical, petroleum, and food-safe applications.

eTape Liquid Level Sensors produce a variable resistance output.  If your application is more suited to monitoring a voltage output, you may want to use the sensor with the optional eTape 0-5VDC Linear Resistance to Voltage Module.

Included : eTape 0-5VDC Linear Resistance to Voltage Module that converts the variable resistive output of eTape Liquid Level Sensors to an output voltage between ~0 and ~5 VDC.  The linear output voltage can then be applied to a microcontroller, ADC, or other voltage monitoring device, to accurately measure and monitor liquid levels.

Key Features:

Rated for chemical, petroleum, and food-safe applications

Crimpflex male pins easily connect to microcontroller projects

Reference resistor pins allow for optional temperature compensation

Protected vent hole to equilibrate with atmospheric pressure

Active sensor length: 12.4 in (315 mm)

Actuation depth: 1 in (25.4 mm)

Output: Variable resistance, 400-2000 ohms +/-20-%

Reference Resistance: 2000 ohms +/-20-%

Resistance gradient: 150 ohms/inch (60 ohms/cm)

Resolution : < 0.01 in (0.25 mm)

Power rating: 0.5 watts (VMax = 10 V)

Operating temperature range: 15 to 150 °F (-9  to 65 °C)

Overall dimensions: 14.2 x 1.0 x 0.015 in (361 x 25.4 x 0.38 mm)

Application Ideas:

Evaporation rate monitor

Aquaculture projects

Industrial mixing control systems