Overview: The document details TrueCap® RF capacitance point
level sensors, models MK-2 and MK-2e, designed for monitoring levels in bulk solids, liquids, and slurries. These sensors are noted for their high sensitivity, reliability, and stability, featuring automatic material build-up immunity and a universal power supply.
Specifications: The sensors have a sensitivity of 0.5pF, suitable for hazardous locations, and can operate in temperatures up to 450°F (232°C). They offer split-architecture for remote electronics mounting.
Principle of Operation: The sensors use radio frequency applied to the probe to detect capacitance changes due to material contact. A driven shield design prevents false readings from material build-up.
Applications: TrueCap sensors are versatile for use in bins, silos, tanks, hoppers, and other vessels with materials like chemicals, plastics, grains, liquids, and slurries.
Model Selection: Selection is based on calibration ease, location, temperature variations, and material characteristics. The MK-2 model offers push-button and remote calibration, while the MK-2e is more economical with manual calibration.
Features and Options: Both models include build-up immunity, high-intensity LED indicators, and hazardous location approvals. Options include various probe types, mounting plates, and extensions.
Accessories: Available accessories include remote calibration modules, mounting plates, and probe extensions to enhance sensor functionality.
Ordering Information: Detailed ordering information is provided for MK-2 and MK-2e configurations, including operating voltage, probe connection, and approvals.
Specifications Overview:- Operating Voltage: 115 VAC, 230 VAC, and 24 VDC (not for hazardous locations).
- Electronics Type: Standard and Hazardous approvals.
- Probe Connection: Options include NPT Alum, SS, and pipe extensions.
- Probe Type: Standard, Food Grade, Stub, and Cable Extension with materials like Ryton® and Nylon.
- Approvals: Hazardous and Ordinary location approvals.
Procedures and Recommendations:- Installation: Specify insertion lengths for pipe extensions and lagged lengths.
- Shipping: Units with pipe extensions over 6.5 ft must be shipped by truck.
- Configuration: Consult the factory for specific configurations.
Standards and Norms:- Environmental Conditions: Suitable for indoor/outdoor use with specific temperature and pressure limits.
- Enclosure Ratings: NEMA 4X, IP66 for environmental protection.
- Safety Approvals: CSAUS CSAC for explosion-proof and intrinsically safe operations.
Key Parameters and Limitations:- Temperature and Pressure: Vary by material and connection type.
- Electrical Specifications: Power requirements and relay outputs detailed.
- Fail-Safe and Stability: Switch selectable fail-safe options and stability metrics.
Warranty Information: Monitor Technologies LLC offers a two-year warranty against defects in material and workmanship.
Contact Information: Monitor Technologies LLC, Elburn, IL. Phone: 800-766-6486, Email:
[email protected]