PHYWE Cobra4 Sensor-Unit Electricity Operating Instructions page 2

2 PURPOSE AND CHARACTERISTICS
Cobra4 Sensor-Unit Electricity contains 2 sensors that simul-
taneously measure current/voltage data.
According to the type of application, Cobra4 Sensor-Unit
Electricity can be connected to one of the following measured
data recording instruments and the current/voltage data be
passed to it.
a Cobra4 Wireless-Link (12601.00) for data transfer to a
•
computer by wireless,
• a Cobra4 USB-Link (12610.00) for data transfer to a com-
puter via a USB-cable,
• a handheld Cobra4 Mobile-Link instrument (12620.00).
The interface to measured data recording instruments is on
the front side of the Sensor-unit, whereby mechanically se-
cure engagement is ensured by a locking mushroom and a
hole.
3 FUNCTIONAL AND OPERATING ELEMENTS
3.1 Operating elements
Cobra4 Sensor-Unit Electricity has no manual operating ele-
ments. Operation of it is carried out via a handheld Cobra4
Mobile-Link or, in the case that it is connected to a Cobra4
USB-Link or a Cobra4 Wireless-Link, via a computer. The
connection between the Sensor-Unit and any one of the three
measured data recording instruments is active as soon as it
is made.
3.2 Measurement inputs
The safety sockets for the measurement of current and volt-
age are on the top side of the Sensor-unit.
The inputs for current and voltage are potential-free up to
100V.
The potential on the input sockets against device earth (black
earthing sockets) is not to exceed 50V.
The inputs are electronically overload-protected.
4 NOTES ON OPERATION
This Cobra 4 Sensor-Unit Electricity fulfils all of the technical
requirements that are compiled in current EC guidelines. The
characteristics of this product qualify it for the CE mark.
This instrument is only to be put into operation under special-
ist supervision in a controlled electromagnetic environment in
research, educational and training facilities (schools, universi-
ties, institutes and laboratories).
This means that in such an environment, no mobile phones
etc. are to be used in the immediate vicinity. The individual
connecting leads are each not to be longer than 2 m.
The instrument can be so influenced by electrostatic charges
and other electromagnetic phenomena (HF, bursts, indirect
lightning discharges) that it no longer works within the given
specifications. Carry out the following measures to reduce or
eliminate the effect of such disturbance: Ensure potential
equalization at the PC (especially with Laptops). Use screen-
ing. Do not operate high frequency emitters (e.g. radio
equipment or mobile radiotelephones) in the immediate vicin-
ity. When a total failure of the instrument occurs, unplug it
and plug it back in again for a reset.
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5 HANDLING
This section describes how to use the Sensor-Unit and re-
cord force data. To avoid failure or improper operation,
please read carefully through this section.
5.1 Putting Cobra4 Sensor-Unit Electricity to use
Please make sure that the current version of measure is in-
stalled on your PC.
Download free of charge via:
www.phywe.com ... software ... measure
measure main program
measure module Cobra4
Alternatively, the software update can be performed with the
measure DVD.
Connect Cobra4 Sensor-Unit Electricity to one of the three
measured value recording instruments suitable for it via the
engaging 15-pin plug connector; The Sensor-unit is ready for
use after a brief starting phase (self-calibration), as the volt-
age is supplied via the measured data recording instrument.
More detailed information on the control of the measured
data recording instruments is given in their operating instruc-
tions.
6 TECHNICAL SPECIFICATIONS
(Typical for 25° C)
Operating temperature range 5... 40° C
Relative humidity < 80%
Sensors
Voltage
Measuring range:
Resolution
Intrinsic resistance
Current
Measuring range:
Resolution
Intrinsic resistance
Max. scanning rate
Connector
Dimensions (L x W x H)
Weight:
7 PARTS SUPPLIED
The extent of delivery is as follows:
Cobra4 Senor-Unit Electricity
•
Operating Instructions
•
-30...30 V
15 mV
1 MΩ
-6...6 A
3 mA
33 mΩ
140 kHz
Sub-D-15-pin
110 x 70 x 30 mm
100 g
12644.00
2
12644.00 / 4808