Sapcon Instruments' Coat­-Endure is a compact level limit switch suitable for sticky solids and pastes. The device has been designed specially for packaging plants, where application material has a tendency to stick on the probe.

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2. CoatEndure - Admittance Level Limit Switch
CoatEndure is a compact level limit switch suitable for
sticky solids and pastes. The
device has been designed specially for packaging
plants, where application material
has a tendency to stick on the probe.

3. CoatEndure - Admittance Level Limit Switch
Principle
CoatEndure is an improvement over the traditional principle of
admittance. The ring type probe has alternating active and inactive
regions, which help the controller to calculate the extent of
coating on the probe. In effect, the device is able to identify the
differential coating between the sense and the shield by
measuring their individual capacitances. As the coating immunity
is controlled by the onboard microcontroller, the extent of coating
immunity can be easily set.

4. CoatEndure - Admittance Level Limit Switch
Approvals
● IP68 Marking
● RoHS Compliance
● Flameproof Enclosure (Gas Groups IIA, IIB, IIC)

5. Features
• Immune to buildup / waiting of application material
• True Universal Power Supply
18-55 VDC (on same terminal)
90-265 VAC (on same terminal)
• Compact Probe Size (65 mm min. probe length)
• Passive Shielding Compensation
• Output: Relay / PNP / Analog (8/16 mA) / RS 485
• Temperature Durability: Up to 80°C (Standard model), up to
250°C (High temperature model)
• Microcontroller-based
• Self-diagnosis of installation errors
• Suitable for conductive and non conductive media
• External visible output and error indication

6. Applications
• Dairy
• Chemical
• Poultry
• Pharmaceuticals
• Foundry
• Packaging Industry
• Material Handling
• Food & Beverages

7. Measuring Systems
The instrument when calibrated at a single
point i.e. in air, can be used with a variety of
materials for level detection. When material
reaches the switching point, the instrument
detects the presence of material according
to the principle mentioned above and
changes the outputs accordingly. The relay
contacts / PNP output / Current Output
could be used for maintaining the level of
the material within the desired
range in the tank. See Figure 1.
1

8. Parts
The parts of Coat-Endure are
explained in the following figure.

9. Technical Specification
Mechanical
Housing: Pressure Die-cast / FLP 1"
Mounting: Screw 1/2" BSP / NPT (minimum)
Flange: Available as per specification
Cable Entry: 2 X 1/2" BSP/NPT or PG 13.5
Dimensions: Refer to drawings/Customer Support
Probe Length: 65 mm (min) to 100 mm (max)
Electronics
Input Supply: 18-55 VDC / 90-265 VAC (on same terminal)
Current: 50mA (max.) at 18 V DC with load consumption
Indication: Bi-color LED (Normal: Green, Alarm: Red)
Output: SDPT / DPDT / PNP / Analog / RS 485
Temperature: 0°C to 80°C, Standard is upto 80°C but can be given up to 650°C if required
Fail Safe: Field Selectable
• Minimum: FailSafe Low
• Maximum: FailSafe High
Delay Setting: Covered and Uncovered 2-25 sec.

10. Model Selection

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