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Metalyser HM5000 Benchtop
Instruction Manual v1.0
www.trace2o.com
Option 3: 10mm I/D Flexible tubing
The supplied 20cm length of 4mm O/D rigid tubing should
be connected to the N
2
inlet port on the back of the
HM5000. The supplied adapter and hose barb can then be
used to connect this to 10mm I/D flexible tubing. Secure
the tubing to the hose barb with the clamp provided.
Priming the nitrogen system
The nitrogen system must be primed to ensure that the built-in nitrogen
regulator can effectively control the flow of nitrogen into the instrument.
• Close off the built-in nitrogen regulator on the back of the
HM5000, by turning clockwise until it is finger tight.
• Slowly open the external in-line regulator or adjustable tap, until there is a small
level of audible gas flow through the nitrogen nozzle in the sensor module.
• Slowly close the external in-line regulator or adjustable
tap, until the audible gas flow stops.
• The nitrogen flow can now be controlled by the HM5000 built-in nitrogen regulator.
Removing the 4mm rigid tubing from the HM5000
The nitrogen inlet port has a locking mechanism to prevent
accidental dislodging of the tubing from the instrument.
If the tubing needs to be removed for any reason push the
surrounding locking ring towards the instrument and simultaneously
pull on the tubing. The tube should be released.
