PASCO CI-6556 CURRENT SENSOR - Manual

+ terminal
- terminal
CURRENT
SENSOR
CI-6556
MAX CURRENT: ±1.5A
I
+
CURRENT
1.00
Ω
Instruction Sheet
for the PASCO
Model CI-6556
CURRENT SENSOR
012-06431B
5/97
$1.00
Introduction
The PASCO CI-6556 Current Sensor is designed to be
used with a PASCO computer interface to measure
currents of ±1.5 amperes.
The Current Sensor can be plugged directly into any
analog channel (A,B, or C) on the PASCO 700i Science
Workshop

interface or analog channel A on the 300i or
500i Science Workshop interface. This is because the
Current Sensor should only be connected to a non-ground
referenced, differential input.
Current passing through the two input connectors
develops a voltage across the 1.00
Ω
, 2 W resistor in the
Current Sensor. The voltage developed at the resistor is
related to the current according to Ohm's Law:
V = I x R
(where V = voltage in volts, I = current in amps, and R =
resistance in ohms).
Since the Current Sensor utilizes a 1.00
Ω
resistor, the
voltage seen across the resistor is equal to the current
flowing through the resistor. The computer interface
channels this voltage into Science Workshop, which
reports the value in amperes (A) of current.
Equipment
Equipment Included:
• Current Sensor
• 6-foot cable with 8-pin DIN connectors
Additional Equipment Required:
• Any PASCO Science Workshop

computer interface
(300, 500, or 700 series for Macintosh or Windows)
or the 6500 series interface for DOS
• patch cords (SE-9415)
Current Sensor
interface cable with
8-pin DIN
connectors
DIN connector
to computer interface
Do not connect to currents greater
than 1.5 A. Connecting to a source
that causes a current of greater than
1.5 A will permanently damage the
Current Sensor.
© 1997 PASCO scientific
better
teach science
ways to
Phone (916) 786-3800 • FAX (916) 786-8905 • web: www.pasco.com
10101 Foothills Blvd. • P.O. Box 619011 • Roseville, CA 95678-9011 USA
®