Pressure Measurement Box_TI

Pressure Measurement Box

A digital measurement box for the acquisition of eight independent pressure signals for automotive engine and powertrain testing.

AVL Approach

The signals acquired by each pressure transducer are transferred in physical units to the AVL PUMA OpenTM automation system by means of a CANopen interface. The temperature compensation, linearization and digital filtering are integrated in the processor of the sensor.

Each pressure transducer can be individually exchanged. Pressures of liquid and gaseous media can be acquired. By means of sampling rates of up to 200 Hz per transducer even dynamic pressure signals can be monitored and recorded. 
The zero offset adjustment is done directly in the pressure transducers.


Benefits at a Glance

  • Exact acquisition of dynamic pressure signals due to data acquisition rates of up to 200 Hz per channel
  • Real-time data synchronization with the AVL PUMA OpenTM testbed automation system
  • Automatic sensor detection (measuring range, serial number, type)
  • Zero offset adjustment directly in the pressure transducer controlled by AVL PUMA OpenTM

Technical Data

Total error:

 +/- 0.15% F.S. / 0°C...+80°C , typ.

Repeatability:

 +/- 0.05% F.S. , typ.

Operating temperature:

 0° … +85°C

Media temperature:

 -25 … +100°C

Sampling rate:

 5 Hz … 200 Hz in steps

Total sampling rate per CAN-Line:

 5'000 samples per second max. per CAN line

Data interface:

 CANopen DS404

Addressing:

 Automatic position referred addressing by means of Daisy Chain during power-up

Number of transmitters:

 50 Nodes max. per CAN Line (6 CANopen Pressure Measurement Boxes)

Temperature compensation:

 Yes

Linearization:

 Yes

Digital low pass filter:

 Yes

IP protection:

 IP 65

Pressure connection:

 Outside thread M14x1,5

Power supply:

 24 VDC via CAN-Bus connector

Weight:

 Approx. 2,1 kg (with 8 transducers)