Leonova Emerald IS

One of the most advanced ATEX/IECEx certified instruments on the market, Leonova Emerald IS provides sophisticated technologies and usability in a single measuring device.

Condition monitoring in zones 0 - 1 - 2

The instrument is built to withstand harsh environmental conditions. Heavy industries with intrinsic safety requirements such as the refinery, mining, or oil and gas industries are challenging environments. Leonova Emerald IS complies with the strictest ATEX/IECEx standards and thus can be used in zones 0 - 2.

Maximum flexibility with vibration analysis and SPM HD 

Leonova Emerald IS offers the strongest combination of measuring techniques available. The SPM HD technique for condition monitoring of rolling element bearings (1-20 000 rpm range) and sophisticated vibration measurement analysis including HD Order Tracking provides maximum flexibility for the detection of machine faults.

Rugged data collector with scalable functionality

Where extensive measuring routes with large amounts of routine measurements need to be handled in a rational manner, Leonova Emerald IS is the perfect choice.

Based on a scalable system, Leonova enables customized solutions where additional functionality can be added as required.

Low speed/RPM


Measurements are more precise and spectrums more detailed than ever before, making in-depth bearing and vibration analysis possible even on the most complex industrial applications.
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Loaded with practical functions and useful features ideal for daily use in rough environments. Multiple options are available to speed up measurements and make instrument operation more effective.
Parallel measurements


Multiple measuring assignments can be carried out with the push of a single button. Immediate condition evaluation, alarm generation, historical data and trends – all delivered right on the screen.
Worker in front of computer screens in an industrial environment


Leonova Emerald® is a portable instrument for industrial maintenance. Ideal for daily use in rough environments, it is the ultimate frontline tool for maintenance engineers and technicians.

Want to know more about Leonova Emerald IS?

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Leonova Emerald IS includes the High Definition Shock Pulse Method (SPM HD®) for bearing condition and advanced vibration analysis for general machine condition and more features, see below. 

Bearing and lubrication condition

Note: Also read about HD ENV® (below) for bearing monitoring.

The SPM HD® Method (HDm/HDc)

The SPM HD® method is a patented further development of the Shock Pulse Method (SPM) in being less sensitive to interference from other signals and therefore unique in its ability to measure from very low rpm (0.1 - 20.000 RPM range). SPM HD is used for fast, easy, and reliable diagnosis of the operation condition of rolling element bearings.

SPM Spectrum™

SPM Spectrum™ is based on extraordinary signal quality and 24 bit A/D conversion that provides razor-sharp resolution and helps determine where a possible bearing damage is located with very high precision.


The LR/HR method was developed from the original Shock Pulse Method for condition diagnosis of rolling element bearings and allows a precision analysis of oil film condition in the rolling interface.


The original Shock Pulse Method is based on dBm/dBc that counts the rate of incoming shock pulses per second and provides one value for the shock carpet level and one value for the maximum level (peaks).

Vibration Analysis

The HD ENV® technique

HD ENV® is a patented enveloping technique used for early detection of impact-related events such as gear and bearing damage. A number of predefined filters are available for easy selection; each designed to detect damages in different failure stages. The method utilizes cleverly engineered algorithms for digital signal processing to obtain optimal data for trending purposes.

Vibration Severity plus FFT Spectrum

Measurement of vibration velocity, acceleration and displacement (0-20kHz frequency range) according to the latest ISO 10816 standards helps to diagnose general machine condition. In addition to the RMS vibration readings, the instrument displays an FFT spectrum, where symptoms of imbalance, misalignment, and structural weakness are easily identified.


The EVAM (Evaluated Vibration Analysis Method) measuring technique produces up to 12800 line spectrum with true zoom, provides ready-made machine 'fault symptoms' as well as trending.

Corrective Maintenance

Dynamic balancing

Field rotor balancing in single plane according to ISO 1940-1 standard with an initial vibration measurement guiding the user through a balancing procedure with suggestions for correcting the imbalance.

Order Tracking

HD Order Tracking

On machinery operating under variable speed, analysis with HD Order Tracking provides reliable data and crystal-clear measuring results even when RPM varies greatly during the course of measurement. Order tracking is applicable in a very wide RPM range, from just a few to thousands of revolutions per minute.

Technical overview

Leonova Emerald IS is lightweight, ergonomic, and easy to operate. Load measuring rounds to Leonova from the PC, then simply measure and save. All input data is pre-programmed. You get an instant condition evaluation on a green-yellow-red scale.

The instrument will deliver long working life under the toughest, most demanding circumstances. Leonova Emerald IS comply with the strictest ATEX/IECEx standards and thus can be used in zones 0 - 2.

Ex marking

Gas: II 1G Ex ia IIC T4 Ga, Ta -20°C to +50°C
Mining: I M1 Ex ia I Ma, Ta -10°C to +50°C


Dimensions: 306x108x71 mm
Weight: 960 g
Display: TFT colour, 240x320 pixels, 3.5 inch, adjustable backlight
Housing: Carbon-fiber-reinforced enclosure, IP65


Leonova Emerald IS instrument overview

Instrument modules

To obtain the optimal performance range and instrument price for their purpose, Leonova users can select any or all of the condition diagnosis and maintenance functions below. Platform functions are always included.


Platform functions

  • SPM HDm/HDc and/or LR/HR.
  • RMS vibration, ISO 2372.
  • Speed measurement.
  • Temperature measurement.
  • Stethoscope function.
  • Recording.
  • Manual recording, free quantity.
  • Checkpoints, free text.
  • Recording of vocal comments.
  • Supports up to 6400 lines, 10 kHz.

Optional functions

  • SPM HD Expert, frequency, and domain analysis.
  • Shock pulse method dBm/dBc.
  • Shock pulse method HDm/HDc.
  • Shock pulse method LR/HR.
  • SPM Spectrum.
  • Vibration ISO 10816 with spectrum.
  • Vibration Premium.
       HD ENV.
       FFT with symptoms.
       6400 lines, 10 kHz.
       HD Order tracking.
       Time signal.
       Post trigger.
  • Vibration Supreme.
       HD ENV.
       EVAM evaluated vibration analysis.
       12 800 lines, 20 kHz.
       + all functions in Vibration Premium.
  • HD Analysis.
       Vibration Supreme.
       SPM HD Expert.
  • Balancing, single plane.


Ex transducers for use in potentially explosive atmosphere


Leonova Emerald IS can be used with vibration, shock pulse, or DuoTech transducers, designed to withstand the rigors of industrial and potentially hazardous environments. Read more about our transducers for explosive atmospheres.

The transducers are available in an array of mounting options: magnet foot, quick connector, or fixed installation – choose the version most practical for your needs. 

IS probe for use in potentially explosive atmosphere

Handheld probe

The handheld shock pulse transducer with probe is perfect for use together with SPM's handheld Ex instruments in a potentially explosive atmosphere. The probe tip is spring-loaded and moves within a sleeve made of chloroprene rubber (neoprene). It tolerates surface temperatures up to 110° C (230° F). The probe is rated IP65. 

Tacho/temp probe IS for use in potentially explosive atmosphere

Combined tachometer and temperature probe

The tachometer and temperature probe for potentially explosive atmospheres is used for optical or contact measurement of the rate of rotation, and for contact measurement of peripheral speed. It also has a built-in temperature sensor for measurements between −20 and +300 °C.

IS headphones for use in potentially explosive atmosphere

Headset with microphone

We also offer a comfortable headset (approved for use in potentially explosive atmospheres – zone 0 excluded) with a microphone for Leonova Diamond IS and Leonova Emerald IS, providing excellent sound reproduction even in noisy environments. The headset is equipped with a microphone for the voice recording of comments to the measuring points. Connection cord made out of soft spiral polyurethane with a 6.3 mm stereo plug. An adapter must be used as the audio jack in the Leonova IS instruments is 3.5 mm. Choose between headset with headband, neckband, or with helmet brackets.

Carrying case with Leonova Diamond IS, headphones and other accessories

Handy case for your entire Leonova Emerald IS kit

This carrying case, made from the conductive material skai, is designed specifically for transporting measuring devices in explosive environments. The bag reliably prevents electrostatic charges and diverts already existing charges. The soft case comes with easily customizable modular inserts and is provided with a shoulder belt for easy and hands-free movement. 

Dimensions: 37x20x27 cm (14.5x7.9x10.6 in).