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Model 2100 Digital Level Sensor

Model 2100 Digital Level Sensor

Categories: Digital Level Sensors (DLS)

At the core of Electrolab’s Oil & Gas business is the Model 2100 Digital Level Sensor (DLS). Electrolab has over 70,000 sensors currently installed in North American production tanks, midstream collection tanks, and many other applications. Dedication to engineering and development, coupled with relationships with world-class OEMs, integrators and distributors, have placed Electrolab level sensors in mission-critical applications throughout North America—including hazardous locations. Accuracy and reliability are hallmarks of the Model 2100 DLS. The Model 2100 is available in a stainless steel version (shown at left), as well as a fiberglass version (shown below in the Product Overview).


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Accurate and Versatile

Using patented reed-switch technology, the Model 2100 Digital Level Sensor (DLS) provides accurate measurement of total fluid level, water-interface level and fluid temperature. Up to eight temperature sensors can be placed along the length of the DLS for monitoring different temperature zones. Switch placement ensures accuracy without cumulative error. Up to 32 tanks can be monitored with a single control unit.

The Model 2100 DLS effectively measures levels of fluids with multiple densities:

  • Crude oil
  • Diesel
  • Kerosene
  • Condensate
  • Gasoline
  • Salt Water
  • Frac Water
  • Fluids in separation tanks and pressurized vessels
  • Many others

Suitable for production monitoring, inventory control, leak detection (in stagnant tanks) and acceptable for custody transfer measurements, the Model 2100 DLS is also appropriate for H2S environments, high/low alarms and many other applications. Communications to SCADA systems can be digital or analog. The DLS works with many wired and wireless systems using Modbus RTU protocols and ASCII.

Reliable—No Ongoing Calibration

After installing the sensor hardware and setting your initial level offset, these sensors require no calibration. All electronics, with the exception of the optional fuse board, are sealed inside the sensor tube, which is constructed of stainless steel (standard) or fiberglass (optional). The apparatus is intrinsicially safe (when used with the Model 2110 Barrier Unit or other suitable Intrinsically Safe Barrier Board), offers low power consumption and is virtually maintenance free.

Oil fields depend on the Model 2100’s quality and reliability. Since their introduction, these level sensors have consistently had warranty repair rates less than 0.25% year after year.

Resolution: ½ inch (+/- ¼ inch), +/- ¼ inch (+/- 1/8 inch), 1/8 inch (+/- 3/16") stainless steel only

# Floats: Single float, Dual Float

Communication Options: Hardwire (RS-485, 4-20mA signal), Wireless

Protocols: Modbus RTU 16-bit, Modbus RTU 32-bit, Serial, ASCII

Wiring: 2-wire RS-485 (2-wire twisted pair), 4-wire RS-485 (3-wire twisted pair)

Tubing Material: 316L Stainless Steel (14 or 18 gauge) or Fiberglass

Measurement Length: 2-35 feet

Composition of fluid to be measured inside tank: Water, oil, gas, diesel, kerosene...

Electrolab's Digital Level Sensor Offers Quality and Reliability

Quality and Reliability...These are the words Larry Erban, Service Manager, of Midtex Oil, a wholesale petroleum products supplier in New Braunfels, Texas used to describe Electrolab's Digital Level Sensor (DLS) product. Still using sensors installed in 1999 to monitor his key customers' petroleum tanks throughout San Antonio and New Braunfels, Larry couldn't be more pleased with their performance. Midtex uses the DLS to determine, even before customers know, when tank levels are low and tops them off as required--practically unnoticed. Midtex customers benefit because they never run low and Midtex benefits by being able to plan scheduled deliveries and truck routes to maximize efficiency and reduce costs.

"The DLS is low maintenance, and once installed never needs to be recalibrated. It measures up to two different fluid densities and up to eight temperatures on a single sensor, and isn't affected by temperature changes", said Erban. "We have it set to report tank levels back to us on a pre-set schedule." A deceptively simple looking device with a minimal number of connections and wires, Electrolab's DLS system can poll up to 32 tank levels, using wireless or hardwired communications, calculate how much product is left in a tank, and report back to Midtex. This enables Midtex to gain efficiencies and bring only the required fuel to a customer site. The system, which has two separate floats weighted for two different gravities of fluids, also calculates the amount of water in a tank. Since the volume of lube varies according to temperature and since accurate volumes are important for custody transfer, Midtex has programmed their SCADA system to automatically calculate and correct for the volume of oil according to the current temperature transmitted from the DLS.

Diesel tank sizes at the truck and quarry sites that Midtex services range from 2,000 to 10,000 gallons. One customer used 750,000 gallons of diesel last year. A busy construction site will go through a 10,000-gallon tank of diesel every two to three days, says Erban. With that kind of demand for fuel, somebody had better be watching those tank levels. For our customers connected via DLS, we can determine how much product to deliver, we can tell what the product costs us, what it will cost the customer, how much they will get, and how much we’ll have left in the truck.

Note: This customer uses Electrolab's Digital Level Sensors along with our InSense Fluid Management software.