Reliable Tank Measurement Solutions for Oil & Gas
Best-in-Class Instrumentation for Measuring Vapor Pressure and Tank Levels of Crude Oil Storage Tanks
Vapor Pressure Measurement
Monitoring vapor pressure in oil and gas storage tanks is essential for safety, whether the tanks have fixed roofs or floating roofs. Fixed roof tanks have set vapor pressure limits to prevent explosions. When gasoline or crude oil is removed, the empty space is filled with vapor, which must be carefully monitored to manage pressure. In floating roof tanks, high vapor pressure can create bubbles beneath the roof, risking the potential overturn of the roof.
OleumTech Resistive Tank Level Sensors and Smart Pressure Transmitters together provide reliable, accurate measurement of liquid levels and vapor pressure inside crude oil storage tanks. The Tank Level Sensors monitor the product and interface levels as well as the temperature of the liquid, while the Smart PTs serve as a vital safety measure by monitoring the pressure exerted by vapors above the liquid surface, thus preventing hazardous conditions like over-pressurization that could lead to tank ruptures or leaks.
OleumTech Differential Pressure Transmitters are also frequently used for monitoring tank vapor pressure due to their ability to continuously reference atmospheric pressure. When measuring pressure in ounces rather than pounds, reliable and accurate atmospheric pressure measurement becomes critical.
Product Solutions
HGPTxxxx Smart Pressure Transmitter (PT)
OleumTech Smart Pressure Transmitters provides highly accurate pressure measurement when monitoring the vapor pressure above the liquid surface in storage tanks.
PRODUCT HIGHLIGHTS
- Nominal pressure rating options:
5, 30, 150, 400, 1500, 3K, 6K and 10K PSI - Reference accuracy: ± 0.075% of full span
- Stability: ± 0.15% Upper Range Limit / 5 years
- Output signal options:
1) 1-5 V 2) 4-20 mA 3) 4-20 mA/HART 4) RS485 Modbus - Adjustable span, Turndown ratio of 20:1
HDPTxxxx Differential Pressure (DP) Transmitter
OleumTech Differential Pressure Transmitters provide constant, relaible measurement of atmospheric pressure.
PRODUCT HIGHLIGHTS
- Pressure type: differential pressure
- Multiple measurement ranges from -435 to 1500 PSI (-12041 to 41520 inH2O)
- Reference accuracy: ± 0.075% of full span
- Stability: ± 0.2 % Upper Range Limit / 5 years
- Output signal options:
(1) 1-5 V (2) RS485 Modbus (3) 4-20 mA (4) 4-20 mA/HART - TD ratio of up to 100:1 (accuracy not affected at TD ratio of 10:1 and below)
HW-RL3-LCD RS485 Modbus Tank Level Sensors
Conveniently monitor product, interface, and temperature with a single sensor using OleumTech Resistive Tank Level Sensors.
PRODUCT HIGHLIGHTS
- 2 discrete inputs
- 1/4” resolution option (±1/8” accuracy)*
*API 18.2-compliant - 1/2” resolution option (±1/4“ accuracy)
- Sensor option: flex (PTFE) or rigid (316 SS)
- Multiple liquid compatibilities
- Device is fully configurable using the LCD display UI, RS485 Modbus Interface, or the H Series Configuration Software