Frequency (Hz)
10
100
1000
1
0
-1
-2
CP35 Frequency Response
-3
Frequency (Hz)
10
100
1000
0
-5
-10
-15
CP35 Phase Response
-20
1
2
1.
3
2.
4
5
3.
6
4
4.
5.
7
8
9
6.
7.
8.
9.
OPERATING INSTRUCTIONS
10000
100000
Switch On
When the probe is switched on, the green LED will illuminate.
The LED starts flashing when the battery voltage is too low
for normal operation and warns the user that it requires
changing.
Auto Zero
The output zero offset voltage of the probe may change due
to thermal shifts and other environmental conditions. To null
the output voltage depress the Auto Zero button. Ensure that
the probe is away from the current carrying conductor whilst
the probe is being nulled.
Current Measurement
10000
100000
Switch on the probe and check that the LED is lit. Connect
the output lead to an oscilloscope, multimeter or other
measuring equipment. Zero the probe using the Auto Zero
button. Clamp the jaws of the probe round the conductor
ensuring a good contact between the closing faces of the
jaws. Observe and take measurements as required. Positive
output indicates that the current flow is in the direction shown
by the arrow on the probe.
Auto Power OFF
In order to save battery life, the probe will automatically
switch itself off after approximately 10 minutes. To disable
FIG 1
the Auto power off function, Switch Off the probe and Switch
On whilst pressing the auto zero button. The red LED will
Jaws
illuminate and the probe will stay on until switched off again.
Conventional
Battery Replacement
current direction
Tactile Barrier
Battery cover
Before removing the battery cover, make sure that
Battery cover
the probe is remote from any live electrical circuit
screw
Jaw trigger
The green or red LED will flash when the minimum operating
ON/OFF switch
voltage is approached. Refer to Fig.1. Use the following
procedure:
Auto-zero button
Unclamp the probe from the conductor, turn it off using the
LED
On - Off switch and disconnect the output leads, from
external equipment.
Loosen the captive screw which secures the battery cover.
Lift the cover through 30° and pull it clear of the probe body
as shown in Fig 1. Replace the battery and re-fit the battery
cover and fasten the screw.
Fit only Type 9 V PP3 Alkaline (MN 1604).
SAFETY WARNING
.
SAFETY STANDARDS
EN 61010-1:2001
EN 61010-2-032:2002
EN 61010-031:2002
300V Cat III, Pollution Degree 2
EMC Standards
EN 61326-2-2:2006
ROHS and WEEE compliant
This product is designed to be safe under the following
conditions:
- Indoor use
- Altitude up to 2000m
- Temperature 0° C to +50°C
- maximum relative humidity 80% for temperatures up to
31° C decreasing linearly to 40% relative humidity at
50° C.
Use of the probe on uninsulated conductors is limited to
300V AC
or DC and frequencies below 1kHz.
RMS
Safety in its use is the responsibility of the operator who must
be a suitably qualified or authorised person. Ensure that your
fingers are behind the protective barrier see FIG 1 when
using the probe.
Always inspect the probe and lead for
damage before use.
To avoid electric shock, keep the probe clean and free of
surface contamination.
Use Isopropyl alcohol to clean the probe.
WARRANTY
Your GMC-I PROSyS current probe is guaranteed for one
year from the date of purchase against defective material or
workmanship. If the probe fails during the warranty period,
we shall at our discretion, repair or replace it with a new or
reconditioned unit provided we are satisfied that the failure is
due to defective material or workmanship. To make a claim
under warranty, the probe should be returned to us, postage
prepaid, with a description of the defect. The use of a battery,
other than that specified invalidates this warranty.
Goods alleged by the buyer to be defective shall not form the
subject of any claim for injury, loss, damage, or any expense
howsoever incurred, whether arising directly or indirectly from
such alleged defects other than death or personal injury
resulting from the seller's negligence.
No condition is made or to be implied, nor is any warranty
given or to be implied as to the life or wear of goods supplied
or that they will be suitable for any particular purpose or for
use under specific conditions, notwithstanding that such
purpose or conditions may be made known to the seller.
N-12.15.2.0DEFIS Rev 2.2