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Monitran

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Monitran

Monitran is a British manufacturer of vibration measurement sensors, velocity transducers and condition monitoring instruments for industrial machines, pumps, fans and rotating equipment. With a catalog of 934 products, Monitran supplies robust, cost-effective solutions for machine vibration measurement and condition monitoring in power stations, water pumping stations, industrial process installations and wind turbines.

Monitran velocity transducers (1185C-series) are electrodynamic sensors that measure mechanical vibration velocity as a voltage signal proportional to the vibration velocity (mm/s). The 1185C-50 and 1185C-25-series are the most commonly used models for general machine vibration monitoring with a frequency range of 10 Hz to 1,000 Hz. Mounting is possible via M8 threaded connection or adhesive mounting on the bearing flange or machine housing. Output signals are directly compatible with vibration meters, data loggers and SCADA systems.

Monitran vibration converters (1185IC-series) provide a 4-20 mA current process signal transformation of the vibration signal for connection to PLC inputs and process control systems. The 1185IC-20+MS067 vibration-4-20 mA-converter integrates a velocity transducer with an integrated electronic converter that transforms peak vibration velocity (mm/s-rms or mm/s-peak) to a 4-20 mA process transmitter signal. 4-20 mA vibration sensors simplify integration into existing PLC-based condition monitoring systems.

Hansa TMP 1SM-series gear reducers (1SM 009, 1SM 012, 1SM 016, 1SM 020) are also available through Monitran as specialized machine drive components. These smaller gear reducers are applied in compact machine drives, positioning systems and test benches. Monitran's range also includes special vibration sensors for high-temperature applications (up to 250°C), offshore environments (IP68 water resistance) and ATEX-certified versions for use in explosive atmospheres.

Mounting accessories such as magnetic bases, adapter stud plates and isolation discs simplify installation of vibration sensors on existing machine housings without drilling operations. Monitran sensors conform to ISO 10816 and ISO 20816 for bearing condition and imbalance measurement in industrial rotating equipment, meeting the standards for predictive maintenance in process industries.

At Verkopershulp.nl you will find the complete Monitran range including vibration sensors, velocity transducers, vibration converters and mounting accessories. Our technical experts advise you on selecting the correct vibration monitoring system for your machine application.

History

Monitran Ltd. was founded in 1992 in High Wycombe, England, as a manufacturer of industrial vibration sensors and condition monitoring instruments for the energy and process industries. The company specialized in developing robust, cost-effective vibration sensors for machine condition monitoring as an alternative to the more expensive industrial sensors from larger brands. During the 1990s, Monitran built a strong reputation in the British energy sector, particularly at water utility companies, power stations and process industries, thanks to products that are easy to install and maintain. Monitran grew into a recognized supplier of vibration sensors in the European energy sector, water management and process industries. The company maintains its production facilities in England and distributes worldwide through a network of technical distributors.

Product Categories

  • Actuator
  • Cable
  • Connector
  • Control Valve
  • Coupling
  • Drive
  • Gear Pump
  • Gearbox
  • Level Sensor
  • Module
  • Piston
  • Pump
  • Sensor
  • Switch
  • Transmitter

Applications

  • Bearing condition monitoring in centrifugal pumps and fans
  • Vibration measurement of electric motors in pumping stations
  • Continuous vibration monitoring of water treatment installations
  • Machine condition monitoring in power stations and steam turbines
  • Vibration analysis of compressors and vacuum pumps
  • Monitoring of gearboxes and reducers via vibration measurement
  • Condition monitoring of wind turbine generators and couplings
  • Vibration measurement in cooling water pumps in nuclear power plants
  • Machine monitoring of drive installations in the offshore industry
  • Vibration analysis in wastewater pumping installations
  • Condition monitoring in food factories (IP67 cleanable)
  • Structural vibration analysis in bridge and building structures

Frequently Asked Questions

What does a velocity transducer measure and when do I use it instead of an accelerometer?
A velocity transducer measures vibration velocity (mm/s) that is proportional to the amplitude of mechanical vibration. Velocity transducers are most suitable for machine monitoring in the frequency range of 10-1,000 Hz, which covers most bearing and imbalance faults. Accelerometers measure vibration acceleration (m/s²) and are more sensitive in high-frequency bands (1-20 kHz) for early detection of bearing flutter phenomena and wear. For general machine monitoring, velocity transducers are sufficient.
What is the advantage of a 4-20 mA vibration sensor over a voltage output sensor?
A Monitran 4-20 mA vibration sensor (1185IC-series) provides a current process signal that is immune to cable resistance and electromagnetic interference over long cable distances, which a voltage signal (0-10V) cannot offer. 4-20 mA signals are directly compatible with standard PLC analog inputs (0/4-20 mA) without additional signal amplification or conditioning. This simplifies integration into existing condition monitoring and process control systems.
What is the service life of a Monitran velocity transducer?
Monitran velocity transducers (1185C-series) are designed for an average service life of more than 10 years at continuous operation at ambient temperatures from -20°C to +100°C. The electrodynamic sensor has no electronic components that can degrade; the main wear concerns internal springs. Preventive replacement after 10 years is recommended in critical monitoring applications. Checking the sensor signal at standstill (electrical resistance measurement) provides insight into the sensor condition.
Are Monitran vibration sensors available for ATEX-certified environments?
Yes, Monitran supplies ATEX-certified vibration sensors for use in gas explosive zones (Zone 1/2) and dust explosive zones (Zone 21/22). ATEX versions are available for velocity transducers and IEPE accelerometers. They are designed for monitoring pumps, fans and compressors in petrochemical refineries, offshore platforms and chemical processing plants. Zener barriers or galvanic isolators are required for connection in the safe area.
How do I correctly mount a Monitran vibration sensor?
For optimal vibration measurement, the Monitran sensor is preferably installed directly on the bearing flange or machine housing via an M8 threaded connection with a torque wrench (tightening torque per sensor specification). Magnetic mounting via mounting adapters is a quick temporary method for diagnostic measurements but provides less good resonance transfer. The cable outlet is supported with cable ties or cable support to prevent vibration loading on the cable connection.
Which Monitran sensor is suitable for high-temperature applications?
Monitran supplies special versions of velocity transducers and accelerometers for high-temperature environments up to 250°C for monitoring hot steam turbines, heat exchangers and oven-related machines. High-temperature versions have special insulation materials for the connector and cable. Above 150°C, a thermal isolation standoff is recommended to thermally isolate the sensor from the hot machine surface.
Does Verkopershulp.nl offer technical support for Monitran vibration sensors?
Yes, Verkopershulp.nl has technical specialists who support you in selecting Monitran vibration sensors, velocity transducers and vibration converters. We advise on sensor type, frequency range, mounting method, ATEX classification and integration into your existing monitoring system for your specific machine application.