Triple rod probe 11363Z

Summary

Product Identification

• Product: Triple rod probe
• Model Numbers: 11363, 11363 Z

Application

These probes are designed for two-point control and limit detection in plastic vessels and vessels made of non-conducting material. They can also be used for minimum and maximum limit detection in vessels with electrically conducting walls, detecting up to three different limit points with a single probe. The 11363 Z version is suitable for explosion hazardous areas (Zone 0) and as overspill protection for water-polluting liquids (WHG).

Functionality

Two-point Control & Limit Detection

• Plastic Vessels: Utilizes the three-rod probe with a compatible conductivity limit switch (Nivotester FTW 470 Z, FTW 570 Z, FTW 325, FTW 520 Z, or FTW 420).
  • One probe and one limit switch for two limit points.
  • One probe and two limit switches for independent two limit detection.
• Conducting Walls: A single three-point probe can detect up to three different limit points.

Function Monitoring

• The EW 11 Z electronic insert can be installed for continuous cable monitoring with maximum limit indication when used with specific Nivotester models (FTW 325 / 470 Z / 570 Z / 520 Z). This is required for overspill protection applications.

Complete Measuring System Compatibility

The system comprises the three-rod probe and a conductivity limit switch:

• Nivotester FTW 470 Z: For calibration range 1 kΩ...50 kΩ.
• Nivotester FTW 570 Z: For calibration range 100 Ω...50 kΩ (suitable for conductive deposits).
• Nivotester FTW 325: For calibration range 1 kΩ...200 kΩ.
• Nivotester FTW 520 Z: For calibration range 100 Ω...50 kΩ.
• Nivotester FTW 420: For calibration range 0...50 kΩ or 0...1.5 kΩ (FTW 420 S) for non-certified applications.

Installation

• Typically installed vertically.
• Compact probes (up to approx. 300 mm) can be installed in any orientation.
• A support may be required for probes subject to high lateral loads.
• For liquids prone to depositing a conductive layer, the final spacer should be at least 100 mm from the probe tip.
• If shortening the probe, ensure insulation is not damaged and no mechanical force is applied to the feed-throughs. Rod insulation at the tip should be removed by at least an additional 20 mm.

Technical Data

Materials

• Probe Rods & Process Connections: Highly corrosion-resistant materials for aggressive products. Specific materials include 316Ti, Alloy B, Alloy C4, PP, PTFE.
• Spacer Material: PFA
• Seal (Threaded version): Elastomer/fibre, non-asbestos.

Insulation Lengths (Standard)

• For maximum and minimum probes: 100 mm (3.94 in)

Operating Pressures and Temperatures

• Metal Process Connections: Refer to drawing (pressure/temperature diagram provided).
• Plastic Process Connections:
  • Operating pressure (p_e): –0.2…+0.2 bar
  • Temperature (T): –25°C…+80°C
• EW 11 Z Electronic Insert: Maximum permissible operating temperature is 80°C.

Mechanical Connection

• Thread: G 1 ½ A (parallel, ISO 228), 1 ½“ NPT (tapered, ANSI B1.20.1)
• Flanges (DIN): DN 40 to DN 200, PN 16 or PN 40. Available with groove-ring or tongue.
• Flanges (ANSI): 1 ½“ to 4", 150 psi or 300 psi. Available with ring joint (11363 only).
• Plastic Flanges (PP or PTFE): Dimensions conform to DIN (PN 16) or ANSI (150 psi) standards.

Dimensions

• Probe Rod Diameter: ø6 mm
• Insulation Diameter: ø10 mm
• Housing Diameter: max. ø 88 mm
• Probe Length (L): Available from 100 mm to 4000 mm.
  • Insulation lengths vary based on probe length and housing type (with EW 11 Z or terminals).

Electrical Connection

• The probe can be supplied with an integrated EW 11 Z electronic insert or an integrated terminal block.
• Connection to Nivotester FTW 420 is not permitted for explosion hazardous areas.
• Ensure cable gland and probe housing are tight after connection.

Ordering Information

Detailed ordering codes for the 11363 and 11363 Z models are provided, specifying:

• 11363: Process connection, material, rod material, lengths of maximum/minimum/reference rods, housing type, and electronic insert.
• 11363 Z: Certificate type, process connection, material, rod material, lengths of maximum/minimum/reference rods, housing type, electronic insert, and compatibility with specific Nivotester models.

Supplementary Documentation

References to technical information for compatible Nivotester limit switches (FTW 470 Z/570 Z, FTW 325, FTW 520 Z, FTW 420) and the Double rod probe 11362/11362 Z are provided.

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Disclaimer: This extraction may miss figures, footnotes, or revisions. Contractual data must match the OEM PDF revision used on the project.

Official datasheet (PDF)

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