User guide

HMG 3010 Page 49
Edition 11/2011 - V04 R01 Part No.: 669855
Example of an Automatically Triggered
Measurement
The following occur in a hydraulic press from
time to time: defective components, ruptured
hoses or cracked cylinders. You suspect
there may be extremely high pressure peak-
ing in three hydraulic circuits and want to
monitor the press for pressure surges for an
extended period of time.
To do this, you make the following settings:
• Recording:
Measurement curve with trigger
• Channels: A, B, C
• Sampling rate: 1 ms
• Recording time: 30 seconds
Trigger settings:
• Event 1: channel A increases to 180 bar
• Event 2: channel B increases to 230 bar
• Event 3: channel C increases to 280 bar
(Each of these pressures is 50 bar higher
than is normally allowed.)
• Pre/post trigger: 80 / 20%
(You select this option because you are
interested in knowing what happened in
the other pressure circuits before the trig-
ger was actuated and you want to record
the pressure curve somewhat longer after
the trigger event.)
• Automatic measurement: Activated
When actuating Start (+ OK) in the function
bar, in the next screen you are prompted for
a name and number for the measurement.
The measurement is then stored under this
name with a consecutive number after
every trigger event. You also have the option
of entering a comment, e.g. the operating
condition of the machine.