PART 1 - GENERAL

1.1 RELATED DOCUMENTS

A. Drawings and general provisions of the Contract, including General Conditions, Supplementary Conditions (if included).

1.2 SECTION INCLUDES

A. Ultrasonic Level Measurement System

B. Optional accessories

1.3 SPARE PARTS

A. One spare Level Sensor

B. One Spare Control Unit

PART 2 - PRODUCTS

2.1 ULTRASONIC LEVEL MEASUREMENT SYSTEMS

A. Manufacturer and Model #’s:

· Rosemount Model 3107HP2N1I5, stand-alone, Ultrasonic Level Transmitter

· Rosemount Model 3491L1P6I1 Universal Controller

The 3107 Transmitter comes with 65 ft integral cable. A version with 164 ft integral cable is available as: 3107HP3N1I5

Alternative Level Transmitter:

· Rosemount Model 3108HP2N1I5, stand-alone Ultrasonic Level Transmitter with external temperature sensor

The 3108 Transmitter comes with an external temperature sensor for improved speed of sound compensation. The temperature sensor cable and the transmitter signal cables are integral to the transmitter.

B. Operating Principle: Microprocessor-based, echo time of flight. All signal processing performed at the sensor.

C. Service: As indicated in Schedule.

D. System Specifications

1. Measuring Range: 1 to 39 ft (the 3108 has a range of 11 ft)

· Minimum dead band: 1 ft

2. Sensor Housing Material: Corrosion and chemical-resistant UPVC

· Sensor rated to withstand full immersion

3. Sensor Cable: Integral to sensor, PVC sheathed 2 core screened cable

4. System Power: 115V AC

5. Sensor Power (via Model 3491 Universal Controller): 12 to 30V DC

6. Sensor communication to 3491 Universal Controller: HART

7. Primary Output: 4-20mA configurable for Level or Volume

· Additional Outputs: Five SPDT relays rated 5 amps

· Optional Output (transmitter): WirelessHART

8. System Configuration Options:

· Integral Keypad

· Asset Management Configuration Software

· Handheld Communicator

9. Sensor Operating Temperature: -20 to 140 degrees F

10. Universal Controller Operating Temperature: -40 to 130 degrees F

11. Sensor Operating Pressure: Atmospheric to 43 psig

12. Speed of Sound Correction: via thermistor integral to sensor

· Optional: The 3108 transmitter has an external temperature sensor

13. Sensor Mount (typical): 316 SST Mounting Bracket for suspended mount

Optional Flange Adapters:

· 03107-1001-0001 1" NPT to 3" ANSI Class 150 PVC adapter flange

· 03107-1001-0002 1" NPT to 4" ANSI Class 150 PVC adapter flange

14. Sensor Location Approval

FM Intrinsically Safe

Class 1, Division 1, Groups A, B, C, D

Zone Marking: Class I, Zone 0, AEx ia llC

Temperature Code T6 (Ta = 55 °C)

Temperature Code T4 (Ta = 60 °C)

E. Accessories:

1. Submersion Shield: 03107-1003-0001

2. Head Verification Device: 03107-1003-0005

PART 3 - EXECUTION

3.1 INSTALLATION

A. Follow manufacturer's instructions for the minimum mounting height between the ultrasonic level transmitter/sensor and maximum expected liquid level.

B. Mount sensor to ensure clear path to the material surface.

C. Provide programming necessary to convert base measurement units to level or volume (tank contents) if the units of measurement listed in the schedule require internal calculations.