Gammex 1425A, User Manual

22

Doppler Mode Phantom Specifications

Electrical Ratings
AC/DC Power Supply Requirements....................................................................110/230V AC ±10%

......................................................................................................50/60 Hz, 19W

INDOOR USE ONLY!

Environmental Conditions
IPXX...........................................................No special protection against ingress of liquids or dust.
Operating Temperature................................................................................................0 to +40ºC
Storage Temperature..................................................................................................0 to +40ºC
Humidity.........................................................30-85% Relative Humidity (No dew condensation)

Tissue Mimicking Blood Material
Speed of Sound.........................................................................................................1550±10 m/s
Density.......................................................................................................................1.03 g/cm³
!"
Particle concentration.......................................................................................................20 mg/ml
Total volume..................................................................................................approximately 200 ml
Viscosity....................................................................................3.8 x 10

-3

 Pa s (-0.11 x 10

-3

 Pa s/ºC)

Vessel
Speed of sound............................................................................................................1550±10 m/s 
Density.......................................................................................................................1.03 g/cm³
Inner Diameter.......................................................................................................................5 mm
Wall thickness........................................................................................................................1.25 mm

Positions

Horizontal......................................................................................................at 2 cm deep
Diagonal.................................................................................40º from 2 cm deep (at wall)

Re....................................................................................................................850 at max velocity 
L................................................................................................................10.5 cm at max velocity

Flow Meter
Type.....................................................................................................................in-line turbine
Accuracy................................................................................................better than 1.5% F.S.*

*The microprocessor-based flow controller within the 1425A produces accurate flow rates from 
1.7 to 12.5 ml/sec with better than 1.5% Full Scale Accuracy.  However, the accuracy of the 
1425A system as a whole is based on a number of factors, including (but not limited to) tem-
perature, flow setting, ultrasound settings, etc.  The accuracy of the complete 1425A system 
may vary.  For more information, see pages 19-21, Accurracy of Flow Velocity Readout.

If equipment is used in a manner not specified by Gammex, 

the protection provided by this equipment may be impaired. 

Use only the approved AC/DC converter supplied by Gammex.