Fuel Sentry Tank Gauge and Leak Detection System

The Fuel Sentry Model TG-EL-D4B Tank Gauge and Leak Detection System is a remote reading, microprocessor based, tank gauge, with 8 intrinsically safe sensor inputs that can monitor one or two tanks.

  • Automatic delivery report and data logging
  • Easy-to-read bar-graph touchscreen display
  • Printer option with automatic report printing
  • Daily/weekly usage report and data logging
  • Daily HD-A2-C discriminating leak sensor every day, log the result
  • Overfill alarm
  • Idle tank theft alarm
  • 8 intrinsically Safe (I.S.) sensor inputs
  • RS485 and Ethernet Modbus
  • Fully field-configurable
  • Customizable tank and sensor names
  • TG_Edit PC based configuration via USB
  • Overview
  • Application
  • Specifications
  • Documents
Overview

The TG-EL-D4B Tank Gauge/Fuel Management System with
Leak Detection System monitors one or two tanks. The D4B
tracks fuel deliveries and daily/weekly fuel consumption. It is a
powerful accounting tool. The leak-detection system is designed for
use with double wall tanks, vaulted tanks, single wall tanks with spill
basins, and double wall piping. The TG-EL-D4B is designed for use
with all fuel oils (No. 2 – No. 6), diesel, kerosene, jet fuel, and most
other petroleum products.

Monitors one or two tank volumes via any combination of sensors

  • TG-EL-WF-(7 or 12)-C wire float level sensor
  • TG-EL-HLT-(9 or 14)-C drop-in head level sensor
  • TG-EL-ULT-_-C ultrasonic level sensor
  • Most other 4-20 mA level, head, bubbler, ultrasonic, or magnetostrictive sensors

Leak Detection Sensor Inputs

  • HD-A2-C discriminating leak sensor
  • RBS or PS-LDS float leak switch
  • Most other contact closure leak sensors
  • Leak sensor wiring fault detection

The TG-EL-D4B system consists of the indicator/monitor, optional printer, level sensor(s), leak sensor(s), and optional delivery flow meter. The TG-EL-D4B accepts up to 6 sensors in any combination. For example:

  • Single Tank: (1) level, (1) head level, (4) leak
  • Single Tank: (1) head level, (1) flow meter, (4) leak
  • Dual Tank:  (2) level, (4) leak (2 per tank) 

 

Capabilities

Leak Sensor Testing: All leak detection systems must be tested periodically over the 20-30 year life of the tank. The Fuel Sentry can automatically test each HD-A2-C discriminating leak sensor every day and print the result. Inspectors can remotely initiate HD-A2-C testing from the Fuel Sentry at any time and log the result

Oil Delivery Verification: With the high price of oil, it is important to pay only for the oil that is actually delivered. With a single level (or head) sensor, the TG-EL-D4B can automatically detect a delivery and print a time/date stamped ‘Gallons Delivered’ report which is used to verify the invoice before payment.

The TG-EL-D4B can also accept a flow meter signal, in addition to a level sensor, for higher accuracy delivery reporting. Delivery ‘shorting’ by air injection, or waste fluid blending, changes oil density which makes the oil truck delivery meter reading inaccurate. With two sensors per tank: head plus either level or delivery flow, the TG-EL-D4B can note suspicious oil density changes on the ‘Gallons Delivered’ printed report.

Idle Tank Theft Alarm: If the gallons in an idle tank drop excessively, the TG-EL-D4B can activate a time/date stamped "Theft Alarm." An external “Tank is Idle” contact closure (from an emergency generator,  pump set, or…) input detects small, slow volume changes. If this input is not available, the Fuel Sentry can trigger a Theft Alarm based on a higher than normal fuel consumption rate.

Overfill Alarm: The TG-EL-D4B can activate an FA-AV-x-D3 audible/visual overfill alarm located near the tank fill pipe to warn the driver to stop filling the tank. The audible alarm self-silences.

Data Logging, Printer, Communications: For a single tank configuration, the TG-EL-D4B automatically logs the following data into non-volatile memory:

  • Last 2 inventories at midnight
  • Last 50 deliveries with time/date
  • Last 70 daily consumptions (midnight to midnight)
  • Last 52 weekly consumptions (Sunday midnight to Sunday midnight)

For dual tank configurations, the data quantities are half of the above for each tank. The last 50 alarm (or status) messages are displayed with time/date stamp. Reports based on the above data can be automatically printed after every delivery, at midnight, after an alarm, or manually on demand. The data can also be read via RS485 Modbus (standard).

Fully Field Configurable: The TG-EL-D4B can be completely field configured from it’s LCD menus and keypad, or with the TG-EL-D4B_Edit PC-based software via the TG-EL-D4B USB port. Sensor type, function, channel, and calibration data can be configured. Relay functions can be assigned (high, overfill alarm, low, leak, theft, pump start, system error, …, common alarm). The 51-point stick chart (volume versus level) can be generated in 2 ways:

  1. Based on tank dimensions for standard shapes. 
  2. Manually entered values from the tank manufacturer's stick chart.

The resulting stick chart can be printed on the optional printer.

Application

The TG-EL-D4B Tank Gauge/Fuel Management System with
Leak Detection System monitors one or two tanks. The D4B
tracks fuel deliveries and daily/weekly fuel consumption. It is a
powerful accounting tool. The leak-detection system is designed for
use with double wall tanks, vaulted tanks, single wall tanks with spill
basins, and double wall piping. The TG-EL-D4B is designed for use
with all fuel oils (No. 2 – No. 6), diesel, kerosene, jet fuel, and most
other petroleum products.

Specifications

 

Instrument

Input Power: 120 VAC +/-15%, 50/60 Hz, 21 VA

Case Size: TG-EL-D4B-00-x:  8” H x 3.5” W x 7.7” D, TG-EL-D4A-Ex-x: 16.5” H x 14.75” W x 9” D

Enclosure: NEMA 12 Faceplate

Ambient Temperature: 32° F to 122° F

Display: Color Touchscreen

Inputs

Multi-purpose : 6 channels, I.S. Class I, Division 2, Group D

Contact Closure (3): 28.4 VDC, 26 mA

2 Wire 4-20 mA: 13 VDC @ 21 mA for each transmitter plus wiring, 0.007% resolution,  0.1% accuracy

Contact Closure: 3 channels, non-I.S., non WFTN-1

1 Channel:  120 VAC, 10 mA

2 Channel:  15 VDC, 30 mA

Outputs

Relays (8 total): 2 channels SPDT, 10 A res., ½ HP, 120 VAC 4 channels SPST NO, 1.5 A pilot, 120 VAC

4-20 mA: 2 channels 650 ohms max, volume or depth

Communications

USB: TG-EL-D4B_Edit PC software

RS485: Modbus, ASCII or RTU 1200-38400 baud

Printer Specifications

Input Power:  120 VAC +/-15%, 50/60 Hz, 20 VA

Case Size:  4.6” H x 4” W x 2.8” D

Enclosure:  NEMA 1

Ambient Temperature: 32° to 122° F

Printer Paper: 2.3” W, thermal, 30 columns

Documents

Fuel Sentry Tank Gauge Specification

Fuel Sentry Tank Gauge Manual

Fuel Sentry Tank Gauge Cutsheet

D4A_ Edit 1.0.0.9 Setup