MASIN Instruments

Total Temperature
Total Temperature is measured by two Goodrich Rosemount Probes mounted on the nose. A non de-iced model 102E4AL shown on the left of the image and a de-iced model 102AU1AG shown on the right. These are logged at 0.7Hz.

Altitude and Air Speed
Static and Dynamic pressure are measured from the aircraft static ports and heated pitot tube on the co-pilot's side. These are on the left of the photo. Honeywell HPA sensors are used. The two pressures are logged at 5 Hz.

Cooled-Mirror Hygrometer
A Buck 1011C cooled mirror hygrometer is fitted on the aircraft nose on the co-pilot's side. This is the small inlet at bottom right of the photo. The chamber is directly behind the inlet with a control unit in the main rack. The mirror temperature is recorded at 1Hz. The chamber pressure is also recorded.

Incoming Radiometers
A pair of Eppley PIR and PSP sensors are fitted on the roof towards the rear of the aircraft. The PIR longwave sensor is on the left in the photo with the PSP shortware instrument on the right.

Outgoing Radiometers
A matching pair of Eppley PIR and PSP sensors are fitted to the camera hatch panel towards the rear of the aircraft facing downwards. Data are recorded at around 10 Hz. On the photo the left hand side is towards the front of the aircraft.

Infra-red Thermometer
A Heimann model KT19.82 infra-red thermometer is also mounted in the camera hatch panel - the single lens middle-right of the photo. There is a solenoid-operated, ambient temperature, black-body calibration target that can be brought into view during flight. Data are recorded at around 10Hz.

Laser Altimeter
A Riegl LD90-3800VHS-FLP Laser Altimeter is also fitted in the floor camera hatch - the two large lenses in the photo. Returns up to a few hundred metres are possible depending on the surface at repetition frequencies up to 2 kHz.

Video Cameras
Two Sony DV-tape cameras can be used. One downwards looking mounted in the camera hatch - the lower right lens in the picture and one forward looking mounted in the cockpit.

Radar Altimeter

Data are recorded from the aircraft's two radar altimeters fitted in the tail section at around 10Hz. These have a range of around 800-1000m and a wider beam compared to the laser altimeter.

Turbulence Probe
A NOAA/ARA BAT 'Best Aircraft Turbulence' is fitted on a boom extending out from the roof of the aircraft on the co-pilot's side of the aircraft. This 9 hole probe records pressures and exposed thermocouple temperatures for measuring turbulence by eddy covariance in conjunction with attitude measurements. 3-axis accelerometer data are also recorded from the BAT Probe. Heaters are fitted inside the hemisphere to enable the instrument to be usable even after encountering icing.

GPS Position
Around 5m position accuracy is recorded at 10 Hz from the JAVAD 4-antenna GPS attitude system. For greater accuracy this is supplemented by a Trimble 5700 survey system using an antenna mounted above the laser altimeter and processed in kinematic mode with a second ground based unit. Both units are usually loaned to us by the BAS MAGIC mapping group.

GPS Attitude and Reference System
A JAVAD AT4 4-antenna GPS system records heading, pitch and roll at 20 Hz and velocites at 10 Hz. Antennas are permanently fitted to each wing and fore and aft of the fuselage.

Inertial Attitude and Heading System
Aircraft attitudes and rate of change are also recorded from the aircraft avionics Litef AHRS system. This is converted from ARINC format at 64 Hz.

Cloud Probe
An under-wing pylon mounted Droplet Measurement Technologies CAPS Probe comprises of a 2D imaging probe, aerosol spectrometer and liquid water content probe. The probe has a dedicated logging PC and comprehensive instrument de-icing heaters.

Closed Path Water Vapour and CO2 Sensor
A LICOR LI-7000 closed path infra-red gas analyser is installed facing forwards in the instrument rack. The input is taken in using a Rosemount inlet and readings are triggered at 50 Hz.

Central Logging System

All instruments apart from the CAPS probe are logged to a single Siemens Simatic rack PC using Labview and associated National Instruments hardware including networked compact Fieldpoint modules in the roof and floor. The logging can be monitored and controlled from the main rack in the cabin as well as a remote touchscreen in the co-pilot's seat.

The CAPS PC fits in the space at the bottom of the rack and dual KVM switches allow both the rear operators screen and the cockpit display to switch to either PC.

Total Temperature	Total Temperature is measured by two Goodrich Rosemount Probes mounted on the nose. A non de-iced model 102E4AL shown on the left of the image and a de-iced model 102AU1AG shown on the right. These are logged at 0.7Hz.
Altitude and Air Speed	Static and Dynamic pressure are measured from the aircraft static ports and heated pitot tube on the co-pilot's side. These are on the left of the photo. Honeywell HPA sensors are used. The two pressures are logged at 5 Hz.
Cooled-Mirror Hygrometer	A Buck 1011C cooled mirror hygrometer is fitted on the aircraft nose on the co-pilot's side. This is the small inlet at bottom right of the photo. The chamber is directly behind the inlet with a control unit in the main rack. The mirror temperature is recorded at 1Hz. The chamber pressure is also recorded.
Incoming Radiometers	A pair of Eppley PIR and PSP sensors are fitted on the roof towards the rear of the aircraft. The PIR longwave sensor is on the left in the photo with the PSP shortware instrument on the right.
Outgoing Radiometers	A matching pair of Eppley PIR and PSP sensors are fitted to the camera hatch panel towards the rear of the aircraft facing downwards. Data are recorded at around 10 Hz. On the photo the left hand side is towards the front of the aircraft.
Infra-red Thermometer	A Heimann model KT19.82 infra-red thermometer is also mounted in the camera hatch panel - the single lens middle-right of the photo. There is a solenoid-operated, ambient temperature, black-body calibration target that can be brought into view during flight. Data are recorded at around 10Hz.
Laser Altimeter	A Riegl LD90-3800VHS-FLP Laser Altimeter is also fitted in the floor camera hatch - the two large lenses in the photo. Returns up to a few hundred metres are possible depending on the surface at repetition frequencies up to 2 kHz.
Video Cameras	Two Sony DV-tape cameras can be used. One downwards looking mounted in the camera hatch - the lower right lens in the picture and one forward looking mounted in the cockpit.
Radar Altimeter	Data are recorded from the aircraft's two radar altimeters fitted in the tail section at around 10Hz. These have a range of around 800-1000m and a wider beam compared to the laser altimeter.
Turbulence Probe	A NOAA/ARA BAT 'Best Aircraft Turbulence' is fitted on a boom extending out from the roof of the aircraft on the co-pilot's side of the aircraft. This 9 hole probe records pressures and exposed thermocouple temperatures for measuring turbulence by eddy covariance in conjunction with attitude measurements. 3-axis accelerometer data are also recorded from the BAT Probe. Heaters are fitted inside the hemisphere to enable the instrument to be usable even after encountering icing.
GPS Position	Around 5m position accuracy is recorded at 10 Hz from the JAVAD 4-antenna GPS attitude system. For greater accuracy this is supplemented by a Trimble 5700 survey system using an antenna mounted above the laser altimeter and processed in kinematic mode with a second ground based unit. Both units are usually loaned to us by the BAS MAGIC mapping group.
GPS Attitude and Reference System	A JAVAD AT4 4-antenna GPS system records heading, pitch and roll at 20 Hz and velocites at 10 Hz. Antennas are permanently fitted to each wing and fore and aft of the fuselage.
Inertial Attitude and Heading System	Aircraft attitudes and rate of change are also recorded from the aircraft avionics Litef AHRS system. This is converted from ARINC format at 64 Hz.
Cloud Probe	An under-wing pylon mounted Droplet Measurement Technologies CAPS Probe comprises of a 2D imaging probe, aerosol spectrometer and liquid water content probe. The probe has a dedicated logging PC and comprehensive instrument de-icing heaters.
Closed Path Water Vapour and CO2 Sensor	A LICOR LI-7000 closed path infra-red gas analyser is installed facing forwards in the instrument rack. The input is taken in using a Rosemount inlet and readings are triggered at 50 Hz.
Central Logging System	All instruments apart from the CAPS probe are logged to a single Siemens Simatic rack PC using Labview and associated National Instruments hardware including networked compact Fieldpoint modules in the roof and floor. The logging can be monitored and controlled from the main rack in the cabin as well as a remote touchscreen in the co-pilot's seat. The CAPS PC fits in the space at the bottom of the rack and dual KVM switches allow both the rear operators screen and the cockpit display to switch to either PC.