AvCount Lite Particle Counter for Skydrol – SA1805-2

The AvCount Light for Skydrol has been specifically designed to measure the particulate of Skydrol hydraulic fluid.

Skydrol is an advanced fire-resistant aviation hydraulic fluid that inhibits corrosion and prevents erosion damage to servo valves. It has been approved by most airframe manufacturers including Airbus, Boeing, and BAE Systems and has been used in their products for over 40 years.

Due to the highly corrosive nature of Skydrol material this special version of the AvCount is fitted with Isolast seals and a protective inner case.

With a simple test procedure and sub 4 minute test time, operator skill or expertise is kept to a minimum.

AvCount Lite can hold up to 3 test methods with custom methods created on a PC before being uploaded.

Test progress and results for up to 6 size bands are displayed as cumulative particles/ml and ISO 4406 cleanliness codes.

Methods: ASTM D975, ASTM D7619, IP 565, DEF STAN 91-091, DEF STAN 91-86, ISO 4406


  • ISO 11171 calibration
  • Cumulative Particles/ml
  • ISO 4406 Cleanliness Codes
  • Portable, compact instrument
  • Online/offline (bottle sample)
  • Stand-alone or PC controlled
  • Programmable via PC
  • Integrated printer
  • Battery power optional

Sample viscosity:
The AvCount Lite can analyze samples with kinematic viscosities of up to 64 mm2/s. When used in conjunction with the optional Sample Delivery System, the viscosity range is extended up to 200 mm/s.

Precision and accuracy:
AvCount Lite is fitted with a precision dual piston pump. When measuring samples from a bottle, the pump draws an aliquot of sample through the measurement cell at a consistent flow rate. When connected to a pressurized line, the pump provides accurate metering and control.

Calibration and verification:
AvCount Lite utilizes 16 point calibration. Calibration can be carried out either using NIST traceable standard solutions or by interfacing with a primary calibrated ‘Master’ AvCount Lite. Calibration can be carried out at a user site or at our authorized regional laboratories.
Supplied with:
– Sample probe, waste pipe, universal voltage power supply, USB cable and calibration certificate.
– A USB memory stick containing handbooks and Partikel software for basic test method programming and data download.

PARTICLE SIZE RANGE ISO 11171: 4 µm(c) to >100 µm(c) (calibration for larger sizes available on request)
NUMBER OF MEASURING CHANNELS 6 size channels displayed on instrument, up to 16 programmable via PC 4 µm(c), 6 µm(c), 10 µm(c), 14 µm(c), 21 µm(c), 25 µm(c), 30 µm(c), 38 µm(c), 70 µm(c)
SAMPLE VISCOSITY (MAX) 64 mm2/s (using an internal pump), 200 mm2/s (pressure fed @ 3 BarG) (SA1950-0 Sample Delivery System is available as an accessory)
RESULTS 900 result memory Date/time indexed (last 20 tests can be viewed on-screen) Download to PC/laptop port or ProTrend software and print via internal printer
SAMPLE FLOW RATE 30 ml/min ±5 ml/min
TOTAL SAMPLE VOLUME USED 80 ml for ASTM D7619 & IP 565, from 20 ml for other methods (includes flush cycles)
VOLTAGE 12 Vdc 3A with the printer on, 1A with printer off Charger/mains adaptor 100 to 240 Vac, 50/60Hz input, 12 Vdc 2.5A output Optional 12 Vdc battery and charger (SA1816-0
SIZE (HXWXD) 250 x 145 x 350 mm
WEIGHT 7.5 kg