Test Equipment

Coriolis fuel meter

iASYS Coriolis fuel meter is used to measure the fuel consumption of an engine in a test bed. This device uses the Coriolis principle based sensor to measure the mass flow, which gives more accurate measurement.

Type Coriolis Principle
Mass flow accuracy 0.1% of mass flow rate
Repeatability 0.05% of actual value
Density accuracy 0.001 g/cm 3
Measuring range Up to 100 kg/hr
Output: Mass flow Volume flow Density Fuel temperature
Communication options PROFIBUS, MODBUS
Temperature of medium -40˚ C to +115˚ C

Gravimetric fuel meter

iASYS gravimetric fuel meter works on the principle of gravity flow to determine the average fuel flow rate for steady state operations.

  • PLC based fuel flow measurement and control.
  • Both time based and weight based control.
  • Time based Scale setting – 0 to 90 seconds.
  • Weight based Scale setting – 0 to 350 grams.
  • Maximum flow rate – 0 to 70kg/hr.

Exhaust back pressure controller

iASYS back pressure controller is fitted at the exhaust line before the place where samples are taken. This back pressure controller has great impact on engine power. If the back pressure is more,

then the power output of the engine is reduced. The back pressure controller is nothing but a pressure regulator which regulates the pressure in exhaust line.


Fuel conditioning unit

iASYS fuel conditioning system is used in engine test benches for controlling the temperature of fuel which is going to engine. The standard unit is capable to control fuel temperature of engines up to 250 kW (higher capacities available on request).

Coolant conditioning unit

The coolant conditioning system will be used in engine test benches for controlling the temperature of engine coolant. The standard unit is capable to control coolant temperature of engines upto 250 kW (higher capacities available on request).


  • iASYS ECAPS prepares the combustion air for engine. The ambient air is conditioned to required temperature, humidity and pressure is maintained at the engine inlet.
  • The centrifugal fan delivers the air to duct. The blower can generate high pressure up to 100 mbar more than atmosphere at the blower outlet.
  • The cooling coil and air duct heater are used to control the temperature of air.
  • The humidifier controls the humidity.
  • A high dynamic butterfly valve controls the pressure at inlet of engine.
  • The complete unit is installed in a sound proof enclosure.
  • An user friendly HMI is integrated to the system for configuration and set point to the controller. Real time trend can be visualized in the HMI.


Intercooler is used in turbo charged engines. To reduce the temperature of air entering the cylinder, it is passed through intercooler. An intercooler is a heat exchanger. That means there are two or more fluids that don’t physically touch each other but a transfer heat or energy takes place between them.


Throttle controller

iASYS Throttle actuator is based on high-performance servo motor controlled by servo drive with resolver feedback. The throttle actuator is suitable for applications ranging from small two-stroke engines to heavy diesel engines. The throttle actuator is easy to use and can be easily interfaced with any automation system.


  • Actuator Type: A rack & pinion unit attached to the shaft of motor for rotary to linear motion
  • Shifting Travel: 100mm (can be more on request)
  • Maximum actuation force : 150 N (more on request)
  • Position Accuracy : 0.05% of FS
  • Direction of operation : Bidirectional
  • Actuator Control details : Servo motor is controlled by a PLC based servo drive based on the position feedback from resolver
  • Interface : Analog I/O


  • Two modes of operation : INT & EXT
  • Input Voltage : 0-10 V
  • Range : 0-100 %
  • Output : 0-5 V & 0-2.5 V
  • Remote/Manual : Selection by toggle at front
  • Power Supply : 230 V AC / 50 Hz
  • Accuracy : 0.2% of F.S +/- 1 digit


  • Actuator type : Linear (with self-locking with acme screw and anti-rotation mechanism)
  • Shifting Travel: 115 mm
  • Maximum actuation force : 220 N
  • Max travel Speed : Up to 30mm/sec (with full load)
  • Position Accuracy : 0.9 play in motor
  • Direction of operation : Bidirectional
  • Actuator Control details : Linear actuator is controlled by a Siemens PLC based on the position feedback from potentiometer
  • Interface : Analog I/O

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