Practical Instrument Electronics 322-1 - Manual (Page 4)

Page 4
Practical Instrument Electronics
82 East Main Street Suite 3.14 • Webster, NY 14580 Tel: 585.872.9350 • Fax: 585.872.2638 • [email protected] • www.piecal.com
SOURCE
Choose this function to provide a simulated thermocouple signal into controllers, temperature
transmitters, indicators or any input devices that measure thermocouple sensors.
1) Disconnect the thermocouple sensor from the
device to be calibrated.
2) Select “ SOURCE” with slide switch w .
3) Connect a thermocouple wire (matching the type
of wire to sensor being simulated) with miniature
male T/C connector or bare leads under the
brass screws to the inputs of the device being
calibrated, making sure to check polarity. Millivolt
outputs (without cold junction) may be connect-
ed with a copper (white) miniature T/C connector
or the banana jacks with copper wire.
The output is adjusted in 0.1° (or 0.001 mV)
increments by turning the knob
e while the
EZ-CHECK™ switch q is in the “HI”, “LO” or “SET”
position. Press and turn the knob for faster dialing
with 10° (or 0.100 mV) increments.
The OVERLOAD indicator will light if excessive
voltage or current is detected by the calibrator.
Sourcing Thermocouple
LO TYPE J
°F
THERMOCOUPLE
CALIBRATOR
J, T, E, K, mV
READ
SOURCE
HI
SET
LO
MAX
READ
MIN
OVERLOAD
Push & Hold
to
Store/Ramp
Push & Turn
for
Fast Dialing
Double Click
for Options
OFF
322.1
T/C
+ -
READ
Choose this function to measure temperatures with a thermocouple probe or sensor.
1) Disconnect the thermocouple sensor from any other device.
2) Select “
READ” with slide switch w .
3) Place the EZ-CHECK switch into the READ position.
4) Connect a thermocouple probe (matching the type of wire to sensor being measured) with min-
iature male T/C connector or bare wire under the brass screws to the sensor. Millivolt outputs
(without cold junction) are connected with a copper (white) miniature thermocouple connector or
to the banana jacks with cooper wire.
The PIECAL 322 measures the temperature signal and constantly updates the display with the
current temperature reading. Move the EZ-CHECK switch to MAX to see the highest temperature
reading and to MIN to see the lowest temperature reading. Press and hold the knob
e to clear the
MAX and MIN readings.
The OVERLOAD indicator will light if excessive voltage or current is detected by the calibrator.
Reading Thermocouple Sensors