GE Druck ADTS 405 - EPR

Reference and Specification
6 - 4
K114 Issue No. 9
EPR
 Engine Pressure Ratio (EPR) is only available in pressure units (mbar, inHg etc.).
 The ADTS 405 can be used to check EPR sensors and indicators.
 For EPR testing, use Ps as INLET pressure and EPR to set the ratio of OUTLET pressure
(Pt) to INLET pressure.
 Before entering a new EPR aim, the rate of change should be set using the RATE key.
 In Control Mode (Aim display), a new EPR aim can be entered using the numeric keys.
Use LEAK MEASURE/CONTROL to change between Control and Leak Measure mode.
ROC/Ps RATE
 In aeronautical units (ft or m), this key selects a Rate of Climb (ROC) or vertical speed
display.
 In pressure units (mbar, inHg etc.), this key selects a rate of change of Ps display.
 SETUP, [UNITS] can be used to change the units, if set-up mode is not switched off.
 In Control Mode (AIM display), a new ROC or Ps rate can be entered using the numeric
keys. Use LEAK MEASURE/CONTROL to change between Control and Leak Measure
mode.
RATE TIMER
 The RATE TIMER key starts an internal timer for one of three pre-defined times. On the
completion of the time period, the average rate of change over the time period is displayed.
 Each selected TIME period can have an associated WAIT period to allow pressures to
settle before the timing starts. The WAIT period counts down to zero before the TIME
period starts.
 To use the rate timer:
 Press RATE TIMER.