Secure Closed-Tank Measurement for Ullage, Temperature & Water Interface
SMTS Marine Solutions LLC supplies the Honeywell HERMetic UTImeter Gtex, a portable gas-tight tank measurement system developed for marine and industrial applications where cargo tanks must remain closed during gauging.
The system enables operators to obtain critical tank measurements including ullage, temperature, and oil-water interface while maintaining controlled tank conditions. Its portable construction, intrinsically safe design, and interchangeable configurations make it suitable for tanker vessels, offshore facilities, terminals, and petroleum storage operations.
For customers requiring dependable cargo measurement equipment, SMTS Marine Solutions LLC provides equipment supply, spare parts, technical assistance, inspection, calibration support, troubleshooting, and onboard service.
Precision Cargo Measurement Through Safe and Gas-Tight Tank Gauging
Closed Gauging Without Opening the Tank
Maintaining tank integrity during cargo measurement is particularly important when handling volatile, flammable, or hazardous products.
The HERMetic UTImeter Gtex connects to a compatible HERMetic vapour control valve, allowing measurements to be performed through a closed gauging arrangement.
This approach helps operators:
- Minimize cargo vapour exposure
- Maintain controlled tank conditions
- Reduce unnecessary atmospheric release
- Obtain accurate measurement data
- Improve personnel safety during gauging
- Support efficient cargo inspection procedures
Three Critical Measurements in One Portable Instrument
The Gtex combines several important measurement functions into a single portable unit.
Ullage Measurement
Determines the distance between the reference point and the liquid surface for cargo level and quantity calculations.
Temperature Measurement
An integrated RTD sensor provides cargo temperature information required for monitoring and measurement correction.
Oil-Water Interface Detection
The sensing system can identify the interface between hydrocarbon cargo and free water at the bottom of the tank.
Operator-Friendly Design
Marine measurement equipment needs to remain practical under demanding operating conditions. The Gtex incorporates features intended to simplify routine operation and maintenance.
Integrated Display
The backlit LCD provides clear measurement information in different lighting conditions.
Audible & Visual Indication
Measurement conditions and instrument status can be communicated through audible and visual indications.
Replaceable Battery
The battery arrangement allows convenient replacement during operational use.
Modular Construction
Selected components can be replaced according to approved maintenance procedures, helping reduce equipment downtime.
Tape Protection
The system incorporates features designed to protect the measuring tape during repeated tank gauging operations.
Gtex Configurations for Different Cargo Conditions
HERMetic UTImeter Gtex
- 1-inch sensing probe
- FKM sealing components
- Intended for standard hydrocarbon applications
HERMetic UTImeter Gtex Chem
- 1-inch sensing probe
- FFKM sealing components
- Chemical-resistant tape connector
- Designed for demanding chemical cargo applications
HERMetic UTImeter Gtex Visc
- 2-inch sensing probe load
- Designed for applications involving higher-viscosity hydrocarbon products
HERMetic UTImeter Gtex Chem Visc
- Combines chemical-resistant configuration with viscous-product capability
- Suitable for demanding chemical and high-viscosity cargo applications
The appropriate configuration should be selected according to the cargo characteristics, tank arrangement, and manufacturer recommendations.
Measurement Performance
The Gtex is engineered to provide accurate and repeatable measurements for marine cargo gauging applications.
| Parameter | Specification |
|---|---|
| Ullage / Interface Accuracy | ±2 mm |
| Tape Accuracy | ±1.5 mm per 30 m |
| Tape Resolution | 1 mm / 1⁄16 inch |
| Temperature Accuracy | ±0.1°C from 0°C to 70°C |
| Temperature Resolution | 0.01°C / 0.1°C selectable |
| Sensor Temperature Range | -40°C to +90°C |
| Ambient Operating Range | -20°C to +50°C |
| Maximum Tank Overpressure | 0.3 bar / 4.4 psi |
Industry Standards & Measurement Practices
The Gtex is used in applications associated with established marine, petroleum, and tank measurement practices.
Relevant standards and industry references may include:
- IMO SOLAS
- MARPOL
- ISO 4512
- ISO 4268
- API MPMS Chapter 3.1A
- API MPMS Chapter 7
- API MPMS Chapter 8.1
- API MPMS Chapter 17.11
- Energy Institute HM4
- OCIMF guidance
Applicable standards and approvals should be verified for the specific model, vessel, cargo, and intended measurement procedure.
Why Choose SMTS Marine Solutions LLC?
SMTS Marine Solutions LLC supports marine operators with professional tank measurement and instrumentation solutions for vessels, terminals, offshore facilities, and industrial customers.
Our support for HERMetic UTImeter systems includes:
- Genuine equipment supply
- Spare parts and accessories
- Technical consultation
- Product selection assistance
- Troubleshooting
- Inspection and testing
- Calibration support
- Preventive maintenance
- Onboard technical attendance
- Operator guidance
- Replacement and upgrade assistance
We aim to provide more than equipment supply by supporting customers throughout the operational life of their tank measurement systems.
Get the Right Gtex Configuration for Your Vessel
Need a Gas-Tight Portable Tank Gauging Solution?
Whether you are looking for a Honeywell HERMetic UTImeter Gtex, chemical-resistant Gtex Chem, viscous-product Gtex Visc, or combination Gtex Chem Visc configuration, SMTS Marine Solutions LLC can assist with product selection, availability, spare parts, and technical support.
SMTS MARINE SOLUTIONS LLC
Marine Tank Gauging | Cargo Measurement | Marine Instrumentation | Technical Services
Contact our team for pricing, technical specifications, equipment availability, spare parts, and onboard service requirements.