3B Scientific Supplementary Set for Stirling Engine D User Manual

3B SCIENTIFIC

Supplementary Set for Stirling Engine D U8440455

Instruction manual

02/11 ALF

®

PHYSICS

1. Description

The supplementary set for the D-series Stirling en­gine provides accessories necessary for mounting a
displacement sensor (U11371) and a relative pressure
sensor (U11321) to the Stirling engine D (U8440450).
in order to record a pressure-volume diagram for the
Stirling engine in conjunction with the 3B NETlog™
interface (U11300-115 or U11300-230).

2. Contents

1 Base plate to accommodate the pressure sensor

1 Knurled screw for fastening the base plate to a
stand rod

1 Stem with magnetic base for displacement sensor

1 Silicone tubing for connecting ±100-hPa relative
pressure sensor (U11321)

1 Set of threads with suction pad

2 Weights with hook, 20 g each

3. Set-up

• Attach the base plate to the stand using the

knurled screw.

Fig. 1 Assembly on base plate

1

• Screw the stem with the magnetic base into the

displacement sensor and place it on the base plate.

Fig. 4 Schematic illustration of how the thread is wound

around the pulley of the displacement sensor
(U11371)

• Attach one end of the thread to the hook of the

connector rod and suspend a weight from the
other end.

Fig. 2 Assembly of displacement sensor

• Loosen the screw on the displacement sensor’s

pulley. Wind a thread once around the pulley
and lead it out of the recess placing a loop
around the screw. Use the screw to fix the thread
in place.

Fig. 3 How the thread is wound around the pulley

Fig. 5 Attaching the thread to the hook on the connector

rod

• Use the suction pad to attach a second thread to

the base plate. Thread this over the groove in
the eccentric and use the other weight as a load
on the free end.

This load ensures that the pV diagram comes out better.

2