The eTape® is a solid-state sensor with a resistive output that varies with the level of fluid (liquid or powder). It does away with clunky mechanical floats and easily interfaces with electronic control systems. The eTape® sensor envelope is compressed by the hydrostatic pressure of the fluid in which it is immersed. This results in a change in resistance that corresponds to the distance from the top of the sensor to the surface of the fluid. The sensor's resistive ouput is inversely proportional to the height of the liquid. Therefore, the lower the liquid level, the higher the output resistance. Conversely, the higher the liquid level, the lower the output resistance.
Product Data Sheets Available Here
Specifications
|
Nominal Length |
8-inch |
12-inch |
24-inch |
32-inch |
|
Sensor Length |
10.2" (259 mm) |
14.2" (361 mm) |
26.0" (660 mm) |
34.2" (869 mm) |
|
Active Length |
8.4" (213 mm) |
12.4" (315 mm) |
24.34" (618 mm) |
32.4" (823 mm) |
|
Sensor Output |
400 - 1500 ohms ±20% |
400 - 2000 ohms ±20% |
400 - 4000 ohms ±20% |
400 - 5000 ohms ±20% |
|
Ref Resistance |
1500 ohms ±20% |
2000 ohms ±20% |
4000 ohms ±20% |
5000 ohms ±20% |
Thickness: 0.015" (0.381mm)
Width: 1.0" (25.4 mm)
Actuation Depth: Nominal 1” (25.4 mm)
Resistance Gradient: 150 ohms/inch (60 ohms/cm)
Power Rating: 0.5 Watts (VMax = 10V)
Resolution: < 0.01“(0.25 mm)
Connector: Male Crimpflex Pins
Temperature Range: 15°F - 150°F (-9°C - 65°C)
Sensor Output
The eTape® can be modeled as a variable resistor. The typical output characteristics of the sensor are show in the figure below.