Net Safety™ Incus Ultrasonic Leak Detector

The Net Safety Incus Ultrasonic Leak Detector is designed for rapid, wide-area detection of pressurized gas leaks in outdoor and well-ventilated industrial environments. Instead of waiting for gas to accumulate or physically reach a sensor, the Incus detects the airborne ultrasound generated when pressurized gas is released, helping facilities identify leaks quickly in challenging conditions.

Using four ultra-sensitive acoustic sensor heads, the Incus continuously monitors for ultrasonic frequencies associated with high-pressure gas releases. This makes it especially useful in areas where wind, ventilation, gas dilution, stratification, or leak direction can make traditional point gas detection more difficult. The detector is not gas-specific and does not measure LEL or ppm; it responds to the ultrasonic signature produced by pressurized releases of toxic, combustible, or inert gases.

Engineered for harsh industrial environments, the Incus features a rugged stainless steel housing, IP66/IP67 and Type 4X ingress protection, HART communication, 4–20 mA output, configurable relays, and continuous electronic self-testing. It is well suited for industrial sites that need fast leak detection as part of a broader fire and gas safety strategy.

Available in BC, AB, and SK, Westech Industrial can support the Net Safety Incus Ultrasonic Leak Detector with product selection, service support, application guidance, and custom fabrication requirements for larger integrated fire and gas detection systems.

Net Safety™ Incus Ultrasonic Leak Detector

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Description

Wide-Area Ultrasonic Leak Detection

The Incus monitors for airborne ultrasound generated by pressurized gas leaks, allowing it to detect leaks without waiting for a gas cloud to accumulate or move directly into contact with a detector. This makes it a strong option for open, ventilated, and windy environments where gas behaviour can be unpredictable.

Four Independent Sensor Heads

The detector uses four multi-directional piezoceramic sensing heads to provide broad coverage. Each sensing head operates independently, and the detector output is based on the highest ultrasonic level measured by any one sensor. If one or more sensing heads experience a fault, complete coverage is not immediately lost.

Fast Response to Pressurized Gas Releases

The Incus responds rapidly to the ultrasound produced by pressurized gas releases. This makes it useful for detecting leaks at an earlier stage, before gas concentration, wind movement, or dilution becomes a limiting factor for other detection technologies.

Built for Extreme Conditions

Designed for demanding industrial environments, the Incus operates in temperatures from -40°F (-40°C) to 185°F (85°C), with a heated option available for temperatures as low as -67°F (-55°C) where applicable. Its 316 stainless steel housing and IP66/IP67 / Type 4X protection help it withstand moisture, corrosive atmospheres, and harsh outdoor conditions.

Continuous Electronic Self-Test

The Incus performs an automatic electronic self-test every 320 milliseconds to check sensor integrity and instrument health. This built-in diagnostic function helps support failsafe operation without interrupting normal sensor functionality.

No Routine Field Calibration Required

Unlike some gas detection technologies, ultrasonic gas leak detection does not rely on contact with a specific gas concentration. The Incus sensors are factory calibrated and do not require routine field calibration, helping reduce maintenance demands over the life of the detector.

Flexible Outputs for Safety System Integration

The Incus offers flexible integration through 4–20 mA analog output, HART communication, configurable relays, and a stepped mA alarm output option. This allows it to be integrated into a variety of plant safety systems, control systems, and standalone detection applications.

Programmable Alarm Settings

Programmable alarm levels and delay settings help screen intermittent unwanted ultrasonic sources, such as short-duration background noise, while still allowing the detector to respond when ultrasonic levels remain above the configured alarm threshold.

Applications

The Net Safety Incus Ultrasonic Leak Detector is well suited for industrial environments where pressurized gas leaks may disperse quickly due to wind, ventilation, equipment layout, or open-air conditions.

Common applications include:

  • Outdoor process areas
  • Well-ventilated industrial facilities
  • Oil and gas production sites
  • Gas transportation systems
  • Compressor and process equipment areas
  • Offshore platforms
  • Areas where point gas detectors or open path detectors may need additional detection coverage
  • Facilities using a layered fire and gas detection strategy with ultrasonic, point gas, open path, and flame detection technologies

Documents

Net Safety_Incus Ultrasonic Leak Detector_Data Sheet_May2026_Westech.pdf

Emerson_Rosemount_975MR_Manual_May2026_Westech.pdf

Emerson Net Safety-FGD-BRO-Safety-Monitoring_Westech_Sept_10_2020.pdf

Manufacturer info

NET SAFETY/ROSEMOUNT offers the most comprehensive and advanced detection technologies available. It’s flame and gas detection products are designed to excel under the toughest conditions.

https://www.emerson.com

SPECS

Product Type:
Ultrasonic gas leak detector.
Detection Principle:
Airborne ultrasound generated by pressurized gas releases.
Recommended Pressure:
Emerson recommends use above 30 psi (2 bar) gauge.
Sensor Configuration:
Four individual piezoceramic acoustic sensing heads.
Detection Frequency Range:
25 kHz to 100 kHz.
Response Time:
Instantaneous; less than 1 second with HART outputs; customer-programmable alarm delay available.
Detection Coverage:
Up to 131 ft (40 m) in low ultrasonic background noise applications (~54 dB); up to 66 ft (20 m) in high ultrasonic background noise applications (~74 dB).
Standard Operation Mode:
4–20 mA = 40–120 dB.
Additional Operation Modes:
Stepped analog signal (bi-state: 4mA = no alarm, 12 mA = alarm); 4–20 mA = 40–200 dB.
Analog Output:
4–20 mA normal operation range; 0–2 mA fault output.
Communication Protocol:
HART supplied as standard.
Relay Outputs:
Two Form C relay contacts: configurable fault relay and configurable alarm relay.
Operating Range Voltage:
24 Vac (15 to 30 Vdc).
Power Consumption:
Standard unit: 6 W during normal operation.
Heated Unit Power Consumption:
1.5 A at maximum display brightness with heaters drawing maximum current at 131°F (55°C).
Standard Operating Temperature:
-40°F (-40°C) to 185°F (85°C).
Heated Unit Operating Temperature:
-67°F (-55°C) to 185°F (85°C), available for applicable low-temperature certification options.
Storage Temperature:
-40°F (-40°C) to 185°F (85°C).
Relative Humidity:
0 to 95% RH, non-condensing.
Enclosure Material:
AISI 316 stainless steel.
Mounting Bracket Material:
AISI 316 stainless steel.
Ingress Protection:
IP66/IP67 and Type 4X to withstand harsh environments.
Weight with Bracket:
Approximately 40 lb (18 kg).
Cable Entry — Signal Entry:
1 in (25 mm) x 0.75 in (19 mm) NPT.
Cable Entry — Double Entry:
2 x M20; not available for FM certified units.
Cable Entry Notes:
M20 standard, with M25, 0.5 in (13 mm) NPT, or 0.75 in (19.0 mm) NPT alternatives depending on configuration and certification requirements.
Mounting Guidance:
Recommended mounting height is 6.5 to 16 ft (2 to 5 m) above floor level, with sensor heads pointing downward.
Warranty:
36 months after shipment.
Product Certification:
Certified worldwide for hazardous locations; consult current certification documentation for installation-specific approvals.

Related products

PRODUCT FAQ's

What does the Net Safety Incus Ultrasonic Leak Detector detect?
The Incus detects airborne ultrasound generated by pressurized gas leaks. It is not designed to identify a specific gas type or measure LEL or ppm. Instead, it responds to the ultrasonic sound produced when gas escapes from a pressurized source.
What types of gases can the Incus detect?
The Incus can respond to pressurized releases of toxic, combustible, or inert gases because it detects the ultrasound created by the leak, not the gas chemistry itself. The gas must be released under sufficient pressure to generate detectable ultrasound.
How is ultrasonic gas leak detection different from point gas detection?
Point gas detectors measure gas concentration when gas physically reaches the sensor. The Incus detects the sound of a pressurized gas leak, which allows it to respond without waiting for gas to accumulate or drift to a specific sensor location. This makes it useful in ventilated, windy, or outdoor areas where gas dispersion can be difficult to predict.
Does the Incus require field calibration?
The Incus sensors are factory calibrated and do not require routine field calibration. Functionality can be checked using the appropriate ultrasonic test transmitter, and the detector continuously monitors sensor integrity through its built-in electronic self-test.
Where should the Incus be installed?
The Incus is typically mounted between 6.5 and 16 ft (2 to 5 m) above floor level to help reduce ground reflections and absorption. The four sensor heads should point downward toward the floor or ground. Final placement should consider coverage, background ultrasonic noise, potential blind spots, and possible unwanted ultrasonic sources.
Can the Incus be used outdoors?
Yes. The Incus is ideally suited for well-ventilated outdoor applications and is designed to operate in harsh industrial environments. Its stainless steel housing, extreme temperature range, and IP66/IP67 / Type 4X protection make it suitable for demanding installations.
How does the Incus help reduce unwanted alarms?
The detector includes programmable alarm settings and delay options that can help screen intermittent ultrasonic sources. This allows short-duration background noises to be ignored while maintaining detection for sustained ultrasonic levels associated with a pressurized gas release.
Can Westech Industrial help with service and support?
Yes. Westech Industrial can assist with product selection, application support, service requirements, and integration considerations for the Net Safety Incus Ultrasonic Leak Detector.
Can Westech Industrial support custom fabrication for projects using the Incus?
Yes. For projects where the Incus is part of a larger fire and gas detection system, Westech Industrial can support custom fabrication and integration requirements, including detector mounting considerations, control panel integration, and packaged safety system components.
Where is the Net Safety Incus Ultrasonic Leak Detector available?
The Net Safety Incus Ultrasonic Leak Detector is available through Westech Industrial in BC, Alberta, and Saskatchewan.