User manual OMRON E32-D82F DATASHEET

[. . . ] Fluid level sensor (contact type) E32-D82F E32-D82F High-accuracy detection of fluid level in washing tank. Uses Teflon (PFA) with excellent chemical and oil resistance. Capable of detecting high-temperature fluids such as sulfuric acid in a wafer washing tank. [. . . ] (The sensitivity is set to the top 10% of the received light intensity in fluid for stronger performance with respect to fluctuations in received light intensity due to fluid leakage, and thus teaching without work for high viscosity fluids is effective. ) Sensitivity control type Sequence Detection state Sensitivity adjuster (A) 2. Using teaching with/without work Perform teaching after the object has been removed from the fluid, and then repeat teaching with the object in the fluid. (Teaching with/without work is effective for fluids in which bubbles form at high temperature. ) Note: If set to the maximum sensitivity with the object removed from the fluid, detection of the fluid will no longer be possible. Indicator state Adjustment procedure Determine the position A at which the incident light indicator lamp (red) illuminates as the sensitivity control is gradually increased from the minimum setting after the object has been removed from the fluid. · If the red indicator lamp illuminates at the maximum sensitivity setting, gradually decrease the sensitivity control from the maximum setting with the object in the fluid, and determine the position B at which the incident light indicator lamp (red) goes off. · If the red indicator lamp goes off at the maximum sensitivity Green Red 1 1 8 OFF Green OFF Red 2 1 (B) 8 OFF (A) (C) OFF Red Green 3 --1 (B) 8 Set the sensitivity control to C midway between A and B. At this time, verify that the stability indicator lamp (green) illuminates both with and without fluid. ON OFF Precautions Correct Use Installation · Use the no-bending section to secure the fiber unit. If the fiber unit is secured without using the no-bending section, the fluid level detection position may shift. · Influences from the sides or bottom may interfere with detection. In that case, remove to a distance that is not subject to these influences, or apply a black coating to the sides and bottom. · If you need to use the system in a dangerous location, use only the fiber unit in the dangerous location and place the amplifier unit in a safe location. For adjustment About the fluid level detection position The fluid level detection position is located 5. 2±2 mm from the tip of the Surface level detection position Teflon section (see the 5. 2±2 mm (From a Teflon part tip) diagram at right). The fluid level detection position will vary depending on the surface tension of the fluid and the dampness of the detection position of the fiber unit. Miscellaneous · Operation will not be stable in the following situations. A Bubbles adhere to the cone of the detector head. [. . . ] To convert grams into ounces, multiply by 0. 03527. E41E-EN-01 In the interest of product improvement, specifications are subject to change without notice. A-362 Advanced Photoelectric Sensors [. . . ]