GE ADTS 542 Instruction Manual page 158

Air data test set

Table of Contents

ALIBRATION

ESCRIPTION

Calibration adjustment

The procedure applies known pressures to the ADTS and then entering the exact applied pressure

using the ADTS Touch. After all calibration points have been entered, the ADTS automatically calcu-

lates the necessary offset (zero) and slope (span) corrections.

Select Ps or Pt. The Ps or Pt sensor correction screen opens.

Follow the on-screen instructions.

Calculate the actual applied pressure reading to at least 4 decimal places and enter this value

into the ADTS.

Repeat this procedure for the other channel.

The adjustment requires two pressures for each channel. Adjustment pressures are the lowest and

highest pressures of the selected channel, see Table 4-5:

ADTS542F

Ps Channel

92mbar

1130mbar

Table 4-5: Adjustment points

Following a calibration adjustment use the sensor precision values as the calibration check limits.

Sensor precision value is displayed under the Tools, System status, ADTS, Sensors, Ps/Pt screen.

Sensor precision values are intended for <24hour post adjustment verification of the ADTS against the

calibration equipment used to adjust the ADTS. For >24hour specification values or where other cali-

bration equipment was used to adjust the calibration refer to the ADTS sales data sheet accuracy

specification.

156

Pt Channel

92mbar

1997mbar

ADTS552/553/554F