Products Level Transmitters

EchoSafe® XP88-89 Ultrasonic Level Transmitter



FM approved for hazardous environments, the explosion proof ultrasonic level transmitter provides continuous level measurement up to 32.8' (10m) with a 4-20 mA signal output, and is configured via the integral push button display module. This non-contact liquid level sensor is ideally suited for corrosive, ultrapure, sticky or dirty liquids, and is widely selected for bulk storage, day tank, lift station and process tank level applications located in a classified area.


Explosion proof level transmitter for use in hazardous areas

Offered in 2 measurement ranges from 26.2' (8m) to 32.8? (10m)

Configuration is simple via integral push button display module

Type 4 aluminum XP windowed enclosure with dual conduit ports

LCD display indicates level in inches, centimeters or percent of span

Narrow 3" beam width for applications with limited measurement space

Rugged PVDF transducer and process mounting plug for corrosive liquids

Automatic temperature compensation for accurate measurement



Range: XP88: 8" to 26.2' (20cm to 8m)
XP89: 8" to 32.8' (20cm to 10m)
Accuracy: ± 0.2% of range
Resolution: 0.079" (2mm)
Dead band: 8" (20cm)
Beam width: 3" (7.6cm)
Configuration: Push button
Memory: Non-volatile
Display type: LCD, 6-digit
Display units: Inch, cm, percent, feet or meter
Supply voltage: 18-28 VDC (loop)
Loop resist.: 250 Ohms max @ 24 VDC
Signal output: 4-20 mA, two-wire
Signal invert: 4-20 mA or 20-4 mA
Signal fail-safe: 4 mA, 20mA, 21 mA, 22 mA
or hold last
Process temp.: F: -4° to 140°
C: -20° to 60°
Temp. comp.: Automatic
Ambient temp.: F: -4° to 140°
C: -20° to 60°
Pressure: MWP = 30 psi (2 bar)
Enclosure rating: Type 4
Encl. material: Aluminum
Window material: Glass
Conduit entrance: Dual, 1/2" NPT
Trans. material: PVDF
Process mount: 2" NPT
Mount gasket: Viton®
Classification: Explosion proof
Compliance: CE, RoHS
Approvals: FM: Class I, Div I
Groups A, B, C, D
Class II/III, Div I,
Groups E, F, G
Power Plant Seal Oil Level Measurement

In 2015, global electricity production will reach 25,000 TWh (terawatt hours). 1 tera-watt hour per year = 1,000 gigawatt hour per year = 1,000,000 megawatt hour per year. Although there are no hard numbers on how much money is spent annually worldwide, this number would equal $3 trillion if all of this energy were consumed in the US, i.e. as calculated at $0.12/KWh. To put this in perspective, the US is one of the cheapest consumers of energy worldwide. In Denmark, the most expensive consumer of energy, the average cost is $0.41/KWh (nearly 3.5x more expensive). Fossil fuels are still the dominant fuel in the global energy mix as represented by government subsidies of $523 billion subsidies in the US in 2011 alone. Most fossil fuels are converted into electricity through combustion and heat exchange. This heat exchange converts water into steam that creates mechanical energy by spinning a turbine. The turbine creates a magnetic field that is then converted into electricity through alternating current. Due to the high heat exchange expereinced through turbines, they must be consistently cooled in order to ensure that the turbine does not fuse together or explode. Most chemical coolants (i.e. propylene glycol) cannot be cycled fast enough to remove the heat from the turbine. The most efficient and effective coolant for these purposes is hydrogen. With its low viscosity and high specific heat, hydrogen is the best gas available when cooling requirements are severe. However, the low density of hydrogen allows it to easily pass through seals and escape into the atmosphere. It is imperative when employing a hydrogen-cooled turbo generator that the seal oil system keeps the hydrogen in the generator. A hydrogen seal oil system also removes water and hydrogen trapped in the seal oil. It maintains an oil pressure above the hydrogen pressure to make sure no hydrogen gets past the oil seals of the generator rotor shaft. At this power plant, an EchoSafe XP88 is measuring the seal oil surrounding a hydrogen-cooled turbo generator. Moisture enters the seal oil system by outside oxygen combining with hydrogen that raises the oil reservoir level. When the oil level raises above its preset limit, the EchoSafe XP88 sends an alarm signal to the SCADA. The SCADA enables a vacuum pump to extract the moisture and replenish the hydrogen that ensures zero process downtime.
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Pharmaceutical Bulk Level Measurement

In 2011, the global pharmaceutical market reached $880 billion. In 2012, the pharmaceutical industry is expected to grow 5-7% or gross close to $940 billion. This presents tremendous opportunity for level measurement sales as pharmaceutical companies will be spending and estimated $67.4 billion in R&D and expansion alone. As a result of this ongoing investment, more than 3,000 new medicines are in development to help treat debilitating and costly conditions ranging from cancers to diabetes to rare diseases. This industry is also a vibrant economic engine. Every one of the nearly 650,000 direct jobs created by one of America's biopharmaceutical companies results in an additional 3.7 jobs in other sectors, totaling more than 3.1 million jobs across the economy. At this pharmaceutical processing plant, an EchoSafe XP88 measures a chemical tank. An EchoSafe was chosen for its explosion proof design as pharmaceutical chemicals are highly volatile and any spark can cause a deadly chain reaction. EchoSafe is FM approved for hazardous environments with its rugged Type 4 aluminum construction while still allowing easy monitoring through its digital display and windowed enclosure.
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Sodium Hydroxide Level Measurement

With global demand at 61M tons per year, sodium hydroxide, also known as caustic soda is the most widely used chemical base. Pure caustic, a pelletized solid, is handled as an aqueous solution to neutralize acidic material or drive chemical reactions. Typical applications include water & wastewater treatment, metal etching, food preparation, aluminum production, cleaners and detergents. When exposed to air, caustic undergoes an exothermic reaction and crystallizes, coating everything it contacts. Here, the EchoSafe explosion proof ultrasonic level sensor provides reliable non-contact measurement of sodium hydroxide in a hazardous environment.
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Petrochemical Hazardous Level Measurement

Refined chemicals are the building blocks of modern products from plastic to aspirin, paint to fertilizer and clothing to detergent. Worldwide there are more than 2900 petrochemical plants in 4300 locations that manufacture refined chemicals from petroleum and hydrocarbon based material. The majority of these manufacturers are located in North America and Europe, but new production facilities are shifting to Austral Asia. Chemical plants are hazardous environments that require explosion proof or intrinsically safe certified instrumentation. Here, an EchoSafe explosion proof ultrasonic level transmitter is installed on the man-way cover of an underground wastewater bulk storage tank. The patented digital signal processing technology features an industry leading 3" beam width that enables installation in close proximity to the 6" suction pipe.
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P/N Description Price
XP88-0 EchoSafe Level Transmitter, 8m (26.2') $ 1,295.00
XP89-0 EchoSafe Level Transmitter, 10m (32.8') $ 1,495.00

USD list prices are subject to change without notice. Contact your Local Distributor for net price quotations.

Contact Us

10500 Humbolt Street
Los Alamitos, CA 90720 U.S.A.
T: (562) 598-3015


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