Page. 5
!
OPERATING INSTRUCTIONS
!
!
The Bartol
“
Mag-Probe
" is an
Instrument f
or
sensing magnetic fields.
!
!
CAUTION
:
Damage may result
if
the
"Mag-
Probe" Is
dropped
.
!
General applications
!
All voltages
(AC
& DC)
!
Solenoids
,
Solenoid valves
,
Relays
,
Reed
relays
,
Coils,
Rotary solenoids
,
Stepper
switches
,
Detecting
residual
magnetism
,
Coils
,
Transient
current pulses
,
Identifying
North & South poles
,
etc
.
!
The white magnetic shield on the
“
Mag-
Probe’s
"
tip reduces the chance of
magnetic fields turning it on during
storage and must be removed before
using.
Replace the magnetic shield after
using
.
!
!
DO NOT STORE THE “MAG-PROBE" NEAR A
PERMANENT MAGNET OR MAGNETIC FIELD.
!
!
A
“
Mag-Probe
"
will not detect devices
enclosed in a magnetic shield.
(most
devices aren’t shielded
.
)
!
!
You may self test the
“
Mag-Probe
"
with the
High/Low sensitivity ring supplied with each
unit.
!
!
TESTING AC
&
DC DEVICES WITHOUT
!
USING THE
HIGH/LOW
SENSITIVITY RING
!
1. Hold the
“
Mag-Probe
"
as shown in
figure 2.
!
2. Place the tip close to or on the shaft that
projects through the device’s coil.
!
3. Observe the LED in the
“
Mag-Probe’s
"
handle.
!
4. If the LED is on,the solenoid or relay is
energized.
!
5. If the LED is off, the solenoid or relay is
de-energized.
!
6. If the LED turns on and off, and flow
through the solenoid valve under test is
not interrupted, or power through a
relay’s contacts don’t turn on and off, a
mechanical failure has occurred.
!
7. If the LED remains off during machine
operation, two possible problems exist:
!
A. No power to the solenoid or relay.
!
B. An open coil
To locate the problem, first test the
power source, then the solenoid or
relay coil.
!
8. If transit pulses are suspected, hold the
Probe tip close to or on the solenoid or
relay and observe the LED during a
machine cycle. If transit pulses are
present during the time the solenoid or
relay should be off, the LED will flash on
and off.
!
With a little practice, you’ll know when to
use the high/low sensitivity ring in order to
test sub-miniature and smaller devices.
!
!
If you need the added sensitivity, install the
high/low sensitivity ring according to the
following instructions.
!
