Integrating flow measurement into a medical device requires components that work with your tubing, system architecture and regulatory requirements.

em-tec provides ready-to-integrate components for the reliable measurement and monitoring of liquid flow in extracorporeal tubing systems. The SonoTT™ SkyLark Series of electronic flow boards and corresponding SonoTT™ Clamp-On SL flow sensors work together to measure volumetric flow non-invasively using ultrasonic transit-time technology.

Components can be tailored to your application, with options for lid printing, plug type, mounting features, cable length and calibration parameters.

From the initial inquiry through integration and serial production, em-tec works with your team to support successful implementation of the flow measurement system.

SonoTT™ Clamp-On SL Flow Sensor

The SonoTT™ Clamp-On SL sensor clasps tubing with a simple click-fastening mechanism and measures flow using the ultrasonic transit-time method, making it non-invasive and hygienic. Together with SonoTT™ SkyLark flow measurement electronics, it forms an integrated flow measurement system for existing extracorporeal tubing.

Features and Benefits

100% Media Contact-Free

  • Non-invasive measurement based on ultrasonic transit-time technology
  • No interruption of the flow path
  • Simple click-fastening for easy and hygienic attachment to the tubing

Engineered for Medical Use

  • Designed for long-term use
  • Easy to clean and disinfect
  • Quick to exchange
  • Available for most used medical tube sizes and materials

Sensor Customization Options

Configuration options include:

  • Individual lid print
  • Plug type
  • Cable length
  • Mounting feature
  • Calibration parameters

Technical Data — Sensor and Tube Dimensions

SENSOR SIZE ID [INCH] WT [INCH] OD [INCH] ID [MM] WT [MM] OD [MM]
1/8" X 1/16" 1/16 3/32 1/4 1.59 2.38 6.35
1/8" X 1/16" 1/8 1/16 1/4 3.18 1.59 6.35
11/64" X 3/64" 11/64* 3/64* 17/64* 4.30 1.25 6.80
3/16" X 1/16" 1/8 3/32 5/16 3.18 2.38 7.94
3/16" X 1/16" 3/16 1/16 5/16 4.76 1.59 7.94
1/4" X 3/32" 1/4 3/32 7/16 6.35 2.38 11.11
1/4" X 3/32" 5/16 1/16 7/16 7.94 1.59 11.11
1/4" X 1/16" 3/16 3/32 3/8 4.76 2.38 9.53
1/4" X 1/16" 1/4 1/16 3/8 6.35 1.59 9.53
3/8" X 1/16" 1/4 1/8 1/2 6.35 3.18 12.70
3/8" X 1/16" 3/8 1/16 1/2 9.53 1.59 12.70
3/8" X 3/32" 3/8 3/32 9/16 9.53 2.38 14.29
1/2" X 3/32" 1/2 3/32 11/16 12.70 2.38 17.46

* Please note that, by itself, the board is no medical device.

SonoTT™ SkyLark Flow 
Measurement Board

The SonoTT™ SkyLark Series is the latest generation of em-tec flow measurement electronics designed for integration into medical devices.

The flow board processes the ultrasonic signals transmitted by the sensor and sends the resulting flow data to the host system. Depending on the selected variant, bubble detection information can also be transmitted.

Together, the flow board and corresponding SonoTT™ Clamp-On SL sensors provide integrated volumetric flow measurement within the medical device or system.

MDR-Ready Integration

  • Suitable for Class III medical devices
  • Class C software developed according to IEC 62304 requirements
  • Documentation to support regulatory integration

Seamless Integration

  • CAN, RS-232 and UART TTL interface options
  • Extended error log for risk analysis and troubleshooting
  • Multiple boards can be used to measure several flow channels
  • Compact frame size

2-in-1 Functionality

Flow measurement and bubble detection with advanced troubleshooting information (depending on variant)

Ready to Integrate

em-tec provides documentation and integration support from the initial inquiry through serial production

Technical Data — SonoTT™ SkyLark

SPECIFICATION ONE ONE+ SILVER GOLD
Technical Specifications
SIZE (L × W) 50 × 72 mm 60.3 × 72 mm 50 × 72 mm 50 × 72 mm
TOTAL HEIGHT 10 mm 10 mm 10 mm 10 mm
THICKNESS PCR 1.5 mm 1.5 mm 1.5 mm 1.5 mm
HEIGHT BOTTOM SIDE 2 mm 2 mm 2 mm 2 mm
OPERATION VOLTAGE +3.3 V ± 2.5% +3.3 V ± 2.5% +3.3 V ± 2.5% +3.3 V ± 2.5%
POWER CONSUMPTION ≤ 1.8 W ≤ 1.8 W ≤ 1.8 W ≤ 1.8 W
PCM MATERIAL UL 94 V-0 UL 94 V-0 UL 94 V-0 UL 94 V-0
Physical Specifications
CONNECTION TO HOST SYSTEM JST 9-pin or Samtec 40-pin JST 9-pin JST 9-pin or Samtec 40-pin JST 9-pin or Samtec 40-pin
SENSOR CONNECTION Cable set (round plug) for SonoTT™ Clamp-On SL Cable set (round plug) for SonoTT™ Clamp-On SL Cable set (round plug) for SonoTT™ Clamp-On SL Cable set (round plug) for SonoTT™ Clamp-On SL
IP CODE IPX0 IPX0 IPX0 IPX0
Interfaces — UART
UART INTERFACE TTL RS-232 X X
DEFAULT OUTPUT RATE 10 Hz 10 Hz — —
DEFAULT BAUD RATE 38 400 baud 115 200 baud — —
Interfaces — CAN
CAN INTERFACE ✓ ✓ ✓ ✓
DEFAULT OUTPUT RATE 10 Hz 10 Hz Output string 1: 1 Hz / Output string 2: 1 000 Hz 10 Hz
DEFAULT BAUD RATE 500 kBaud 500 kBaud 1 000 kBaud 500 kBaud
Functions
FLOW MEASUREMENT ✓ ✓ ✓ ✓
BUBBLE DETECTION × × × ✓

* Please note that, by itself, the board is no medical device.

Questions About em-tec OEM Flow Measurement Technology?

em-tec engineers have the application knowledge to help you identify the appropriate flow measurement solution for your medical device.

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