Orbit Controls OC 3010, Owner'S Manual

Page: 7 / 26

7
Chapter 1
1.1 Application and measurements
Decelerometer is used for measurements of overall brake decelerations of traffic vehicles.
The value of deceleration is measured, as well as its dependence on the controlling force
applied to the brake pedal, or its dependence on the air pressure in the air pressure
brakes. The results of measurements are the graphical records time related the numerical
calculated average value of overall deceleration and the average value of control force or
the average value of air pressure.
The following three options can be ordered:
- Decelerometer only
- Decelerometer with external sensor for controlling force applied to the brake pedal
- Decelerometer with external sensor for air pressure in the air pressure brake system
The measurement of the controlling force applied to the brake pedal and the measurement
of the air pressure in the air pressure brakes is possible only with the external force sensor
or with the external pressure sensor. After the selected sensor is connected, the
Decelerometer will be configured automatically. The external sensors are supplied as
accessories.
External sensors from different Decelerometers are not exchangeable
without the manufacturer’s calibration.
The measurement is very easy. The instrument must be placed onto the vehicle whereas
the arrow on the instrument shows the direction of travel. With the levelling screws and
built-in levelling libel the instrument is adjusted into exact horizontal position. After
switching-on, the display scrolls the instructions. When the calibration is finished, the
vehicle can be set into the motion. The measurement will start by pressing the starting
button. Than the vehicle is slowed-down until it stops by its own braking system. The
wheels are not allowed to block. The maximal values appear at the display and the
detailed report is printed. The results of measurements will remain in the internal memory
as long as the power is switched-on.
1.2 Specifications
Design and specifications of the Decelerometer are based on the regulation of Ministry of
transport, “About regular technical inspections and emission measurements of the road-
bound vehicles “.
Measurement Ranges:
- Braking deceleration 0 - 20 ms
-2
- Controlling force applied to the brake pedal 0 - 1000 N
- Air pressure in the air pressure brake 0 - 1 MPa
Accuracy of the measurements:
- braking deceleration ± 3 %
- controlling force applied to the brake pedal ± 35 N
- air pressure in the air pressure brake ± 25 kPa.