MMC is the world's leading manufacturer of portable instruments for measuring ullage, oil-water interface, temperature, and bottom dryness in shipboard and land-based petroleum and chemical tank systems. All MMC systems are manufactured in the United States and are certified as intrinsically safe by Factory Mutual, BASEEFA, CSA and SAA. A, above, is the front view of the Flexi-Dip CLOSED Gauging Tape. B is the rear view of the same unit. C is the Flexi-Dip RESTRICTED Gauging Tape. All units are shown connected to MMC's type "MB" vapor control valve. FLEXI-DIP Closed Trimode Gauging Tape The Portable Closed Flexi-Dip measuring tape is a battery-operated electronic unit that is totally gas-tight. When installed in a vapor-control valve mounted on a storage (cargo) tank, it forms a tightly sealed system that prevents toxic vapors from escaping and creates a closed gauging system for that tank. The tape is marked in metric or english units and is anti-static coated (as is the sensor). In addition, the tape is color marked to make tape direction and motion easily seen and to ensure full rewind position. A coiled grounding cable with large alligator clip is standard. This closed system is recognized by many worldwide regulatory bodies as equivalent to a fixed gauging system as long as the tape remains in the valve from the beginning until the end of loading or discharging of the tank. SPECIFICATIONS Accuracy of Tape Reading: Fluid level +/- 1/8 inch (3mm), +/- 0.01% of F.S. tape LGT (F.S. = Full Scale). of Temperature Display: +/- 0.5° F (+/- 0.3° C), +/- 1 digit error. Ambient Temperature Limits: -20° F (-7° C) to 120° F (49° C). Product Temperature Limits: -40° F (-40° C) to 180° F (82° C). Battery: 9-Volt Eveready # 522 or Mallory MN1604. Tape Lengths: 50 ft. (15m), 75 ft. (25m), 100 ft. (30M). Typical Weights: 14 lbs. (6.4 KG). Pressure Limits: 3 psi working, 7.5 psi maximum. Approvals: Intrinsically safe--FM, BASEEFA, CSA, SAA, NKK (Japan). FLEXI-DIP Gauging Tapes (Restricted and Open) Restricted and Open Gauging Tapes provide a convenient and accurate means for measuring ullage, product temperature and the oil-water interface. The units are configured to operate in the trimode, bimode, interface or temperature mode. Each instrument is designed to maximize ease of use. A single penetration of each tank can provide comprehensive data about internal tank conditions. When the electronic probe senses hydrocarbon, a steady tone is heard; when sensing water, it emits an intermittent tone. Temperature is shown on an LED display in the hub of the instrument. SPECIFICATIONS Accuracy of Tape: +/- 1/8" (+/- 3mm), +/- 0.01% of F.S. tape LGT (F.S. = Full Scale). of Temperature Display: +/- 0.5° F (+/- 0.3° C) +/- 1 digit error. of Calibration Range: 32° F (0° C) to 176° F (80° C). of Probe: For dryness to within 3/8 inch (10mm) of bottom. Ambient Temperature Limits LCD: same as above. Sensor: same as above. Application: Open gauging ("O" type) (Safe product vapors only). Restricted gauging ("R" type) via MMC vapor-control valve. Battery: 9-Volt Eveready # 522 or Mallory MN1604. Operation: U-Ullage, I-Interface (oil/water), T-Temperature. Tape Length Dual-Marked: 50 ft. (15m), 75 ft. (25m), 100 ft. (30m), 120 ft. (37m),165 ft. (50m). Single-Sided: 30m, 100 ft. engineering scale (ft., 1/10 ft., 1/100 ft.) Typical Weights: 50 ft/15m - "R" 8lbs (3.6kg) "F" 7 lbs. (3.2kg). 100 ft/30m - "R" 9lbs (4.1 kg) "F" 8lbs. (3.6kg). 165 ft/50m - "R" 11 lbs (5 kg) "F" 10 lbs. (4.5 kg). Approvals: Intrinsically safe--FM, BASEEFA, CSA, SAA, NKK (Japan). Note: Calibrations for Temperature and Linear Measurement Accuracy are performed in accordance with the instruments and procedures in NIST Test No. 250972 and MIL-STD-45662A, and in a manner that meets or exceeds API industry standards. Certification documents are available upon request. All MMC Flexi-Dip Gauging Tape systems come with a sturdy, molded plastic carrying case for convenient transportation and safe storage, and include a spare battery and instruction manual.