Fresenius Kabi Agilia SP, Technical Manual

Page: 45 / 306

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6.2.7 Test 6: Displacement
Test Description
The Displacement sensor is a linear potentiometer used to control the linear motion of the
plunger driver and to determine the remaining volume in the syringe.
Run this test to validate the accuracy of the displacement sensor.
The plunger’s driver displacement is correctly calibrated.
This test failed if one of these two conditions is encountered:

The displacement sensor is not calibrated. Calibrate the displacement sensor using
Agilia Partner maintenance software.

The displacement sensor is defective or not correctly connected to the CPU board.
This problem leads to an error code 21:
- Check the cable connection to CPU board (J2 connector).
See figure 2.8, page 16.
- Replace the displacement sensor. See section 8.12, page 115.
Required Tools and Equipment

1 displacement verification gauge, 2.56 in (65 mm) long
Prerequisites

The calibration certificate of the displacement verification gauge is valid.
1. Access the Tests menu. See section 6.2.1, page 40.
2. Press the arrow keys to select Test 6: Displacement .
3. Press enter .
4. Press the arrow keys to scroll through the information screens
.
The following data is displayed:

Conversion : Sensor value in mV. The displayed voltage value depends on
the plunger head position

Position : Plunger head position value in mm

Low (20 mm) : Sensor value in mV when the plunger head is positioned at
20 mm (0.79 in). Value saved during last calibration

High (115 mm) : Sensor value in mV when the plunger head is positioned
at 115 mm (4.53 in). Value saved during last calibration

Date : Date of last calibration displayed in the following format:
Month/Day/Year (mm/dd/yyyy)

Number : Last calibration number

Linearization : Date of last calibration that included a linearization. This
date is displayed in the following format: Month/Day/Year (mm/dd/yyyy)
CPU BOARD
Displacement
sensor
Main
microprocessor
Linear potentiometer
Interface