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license: cc-by-nc-4.0
---
Main protocol

Performer: Hamza \
Purpose / Hypothesis: To see pump height effect on signal with stationary needles.

Needle size: 22G
Needle tip: Chiba

Used Sensor : M.4.4.0.22G and M.4.4.1.22G \
Punctured Material: Foam \
Phantom setup: Foam wrapped around tube. Dry foam used. 



![b378dd1a-7d64-4041-b208-0cee68f8eafc](https://cdn-uploads.huggingface.co/production/uploads/6866bd792d33c8c807a05d45/psXqFHnBSFDUG9GLgClKx.png)

Extended:

Pump was running at 22 rpm.  \
Pattern box used for stable tube and known pattern and distance from tube. \
2 differnt pump height used one was 1.5m and other one was same level as pattern box.





![60e634a3-9af3-46c7-a4f4-4944512818dc](https://cdn-uploads.huggingface.co/production/uploads/6866bd792d33c8c807a05d45/Dthzi4RmTObyatX4L4Fzw.png)

1.5M high




![f2597f2c-281f-4c29-ae07-3095e03752f5](https://cdn-uploads.huggingface.co/production/uploads/6866bd792d33c8c807a05d45/e4nnQX-hJkS8s8hCPB3ED.png)

Same level



Filename meaning: \
1.5m_elevated_1st__M.4.4.0_2nd_M.4.4.1_dry_foam_22g_chiba_2025-10-21_18.04.09

level of pump-sensor-type-phantom-needle gauge-needle type_timestamp


M.4.4.0 Sensor placed on channel 0. On channel 1 M.4.4.1 microphone.


Needle tracking protocol

There is no tracking because needle was stationary