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Air permeability 37SC

Air permeability tester 37SC measures the air permeability of fabrics for Textile laboratories, finishing areas and production

Air permeabiltiy tester 37SC complies with UNI EN ISO 9237, EN ISO 9073 - 15, ISO 48, ISO 139, ISO 10012-1, ASTM D-737, JIS L 1096 A, DIN 53887, EDANA 140.1, GOST 12088 - 77, ASTM D-3574, TAPPI T-251



Air permeability tester for fabrics
0..1000 Pa
0..2500 Pa
Taratura strumento / Calibration
Manutenzione - Servicing
Stampante - ASCII printer
Software BAP_04 : Statistical Analyses
Parti di ricambio - Spare parts

Air permeability tester 37SC is built and designed to measure the exact rate of determined flow of air that pass perpendicularly across a fabric sample

As per model BAP 37S, the new air permeability tester 37SC measures the exact air permeability of all type of fabrics

The redesign of air permeability tester 37S in 37SC gives a new and improved form.

Reliability, repeatability and reproducibility thanks to attention given to the internal frame with double-volume that separates power thermal loads components from precision sensors without affecting them.

Physical testing laboratories, merceological laboratories, textile finishing and textile products quality control are main applications where air permeability tester is used.

The tests must be carried out by operators inside conditioned rooms in compliance with norm ISO 139:2011 as described in Standard UNI EN ISO 9237:97 and ASTM D-737 and others.

Composed of floor standing unit with wheels comfortable to operate and to move easily in laboratory and production areas.


Innovative air permeability tester function allows to measure rapidly several points of the sample saving data on memory, getting full test report of stored data, thus verifying its uniformity of air passage that allows operator to improve better quality adjusting thermal processing in finishing areas.

After settings, user starts air permeability tests on touch screen by means of command function keys for user management to control pressure drop, analyzing test monitor and savings.
Fine adjustment on pressure drop is manual or automatic by means of electronic elemnts in the air circuit.

A) The suction is powered from innovative ultra-silent vacuum unitwith noise level lower than 40 dB installed inside the tester.

B) Thanks to QUICK CHECK function operator sees immediately instant and average values of air permeability after few seconds also testing very low permeability samples;

C) Pressure drop control can be both manual or automatic

D) Electro-mechanical clamping system with activation switch ideal for ASTM D-737, where flanges always same clampling force not exceeding 50 5 N.

How to peform tester calibration?
Air permeability tester 37SC includes calibration check plate to do periodical checks of correct measuring by sensor readings. On request tester calibration check plate can be supplied with copy of conformity certificate.

With thicker samples up to 1 cm or more, special cover sleeve with requested area (cm2) can be applied on original test area.

Air permeability tester 37SC is designed to support roll of materials to slide on test area to verify its uniformity.

Test area reduction flanges of 50, 20, 10, 5, 2 cm2 are arranged together with tester and used in correlation to Reference Standard; on request auxiliary test area of 38 cm2 is used in test performances under pressure drop set at 125 Pa in compliance with Standard ASTM D-737.

E.g.: Test with calibration check template;

Through HMI 5" Touch Screen user can configure parameters setting and view test monitoring:

Original test area:100 cm2
Test area reductions: 50, 20, 10, 5, 2 cm2
Reading accuracy: (0..900) +/- 0,1 Pa; (0..2500) +/- 0,1 Pa;
Pressure drop control: Manual Automatic
Test results: Lt/min, Lt/h, m/s, Lt/m2/s (or mm/s), Others


1) ASCII Printer: once test is ended, user can print test results on paper report thanks to auxiliary ASCII printer available in both impact or thermal models. Inside test listing report are shown following information:
  • Company
  • Address
  • Operator
  • Sample No.
  • Supplier
  • Ambient Temperature ( C)
  • Ambient R.H.(%)
  • Additional notes
  • Test results expressed in the selected measure units Lt/min, Lt/m2/s, m/s, etc.
  • Operator signature

2) BAP04 application software: add-ins software with datalogging functions and remote control, statistical analyses of test results through microsoft office excel.
  • Easy programming
    • The user can set all parameters from Local-PC configuring cells as monitoring and setting of machine in Excel file communicating and sending command and information through bidirectional communication to instrument;

    • Data storage and automatic saving
    • Flexibility
    • Automatic Macro
    The macros recorded by user when program is active

  • Character change: signaling change of On/Off conditions
  • Operation formula: automatic calculation through math formulas set by operator for each cell;

mm/s (Lt/m2/s);

AIRFLOW MEASURE RANGE: da 1,4 mm/s a 8056 mm/s;
* FYI: availability to speed up test thanks to the function control "QUICK CHECK";

TEST AREA (cm2):

TEST AREAMIN (Lt/m2/s)MAX (Lt/m2/s)
100 cm2 1,4 161 (Original)
50 cm2 2,8322 (Reductions)
38 cm23,7424 (ASTM D-737)
20 cm26,9806 (Reductions)
10 cm213,91611 (Reductions)
5 cm2 27,83222 (Reductions)
2 cm269,4 8056 (Reductions)

  • 0 - 900 Pa (0-90 mm.Wg)
  • 0 - 2500 Pa (0-250 mm.Wg)

  • 100 cm2
  • 200 cm2

  • 50 cm2;
  • 20 cm2;
  • 10 cm2;
  • 5 cm2;
  • 2 cm2;


Minimum airflow: 50 Lt/h (equal to 0,84 Lt/min)
Maximum airflow: 5800 Lt/h (equal to 96,6 Lt/min)
Test air volume: 10 Lt /100 Lt
Maximum permitted error (MPE): 3% (according to UNI Standard)
Power supply: 110/230VAC - 50/60 Hz
Dimensions (LxDxH): 600 x 600 x 1150 mm
Net weight: 100 kg

  • ASCII Printer 57,5 mm, 24 columns with USB slot;
  • Sleeve of 100 cm2 to avoid air sides passage for thicker samples;
  • Dedicated reduction flanges of 50 cm2 for special samples;
  • Reduction flanges of 38 cm2 according to the norm ASTM D-737;
  • woven fabrics
  • knitted fabrics
  • nonwovens
  • filtration
  • felts
  • gas filters
  • fabrics for air bags
  • clothing
  • mosquito netting
  • parachutes
  • sails tentage
  • vacuum cleaners
  • weather-resistant
  • rainproof fabrics
  • coated fabrics
  • industrial fabrics
  • military fabrics
  • 37SC-Pressure-drop-regulation-knobs
  • 37SC-Air-permeability-photo-profile
  • 37SC-Air-permeability-air-intake
  • 37SC-Ethernet-port
  • 37SC-Air-permeability-side-flap

Ricambi e accessori

Ricambio / accessorio Qta Prezzo
(IVA esclusa)
ALIMRS3524 - Alimentatore (EL) € 19,00 16,15
TRAPR2301 - Trasduttore di pressione - Air permeability (RIC) € 640,00 608,00
MODJACKBOR - Contatto magnetico - AIR PERMEABILITY (RIC) € 24,00 22,80
BAPASTM38 - Area di prova 38cm2 - AIR PERMEABILITY (ACC) € 115,50 109,73
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