UTI Oil-Water Interface Gauging Tapes

Standard Applications:

  • Restricted (“R” type)
  • Gauging
  • Restricted gauging via our tank-top gauging stations and vapor control valves

Restricted Trimode

 Other Applications:

  • Open gauging (“O” type) (Non-Toxic product vapors only)
  • Environmental gauging (“E” type) ( Typical well monitoring vapors only)
These portable FLEXI-DIP® “UTI” gauging tapes provide a convenient and accurate means for measuring ullage, lower oil-water interface and temperature.

MMC’s UTI gauging tapes are capable of detecting all floating and non-conductive hydrocarbons. Each instrument is designed for ease of use. Gauging for liquid or interface level is accomplished simply and quickly. When the electronic probe is lowered and senses a hydrocarbon, a steady horn tone is sounded and a yellow LED illuminates. When sensing an oil-water interface or a non-conductive liquid heavier than water, an intermittent horn tone sounds and a red LED starts flashing. This gauging system is certified as “Intrinsically Safe” for use in all class IIC hazardous atmospheres.


Display Readable Temperature

*Reading Limit Due to 3-1/3 Digit LCD Display on °F Range

°F = -40° to 199.9°*

°C = -40° to 150.0°

Guaranteed Temperature Calibration Range

32°F to 190°F

(0°C to 88°C)

Accuracy Over Calibration Range ±0.2°F (±0.1°C)
Accuracy Linear Measurements
±1/8” (±2.0 mm), Plus ±0.1%
of Total Tape Length, worst case
Minimum Detectable Tank Bottom Liquid Level 3/8” (10mm)
Minimum Detectable Floating Product Level
1/8” (3mm)
Batteries for Intrinsically Safe Operation Only (Supplied) Duracell MN1604
Battery Drain (Temperature Mode)

1.3 ma (In Air)

2.6 ma (In Fluid)


3-1/2″ Digit Liquid Crystal 

Display 1/2” Character Height

Operating Temperature Limit of Liquid Crystal Display

-40°F to 176°F

-40°C to 80°

Storage Temperature Limits

-67°F to 185°F

-55°C to 85°C

Available Tape Length

50 ft (15 m)

65 ft (20 m) 

75 ft (25 m)

100 ft (30 m)

100 ft (10ths & 100ths)


Hazardous Environments Certified Intrinsically Safe
Gas Groups C & D