Practical Instrument Electronics 311 - Manual (Page 2)

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
Page 2
q EZ-CHECK™ SWITCH
SOURCE: Instantly output two preset RTD
temperatures by moving the EZ-CHECK™ switch to
the
“LO” position or “HI” position. For fast three
point checks select the “DIAL” position. The
PIECAL 311 will remember the last “DIAL”
value, even with the power off.
These values can easily be changed to suit the
calibration requirements. The temperatures stored in
the HI and LO positions are also used for Auto
Stepping.
READ: Slide the switch to the DIAL position. The
PIECAL 311 will display the current temperature from
the RTD sensor. Slide the switch to HI and the
highest temperature measured since turn-on or reset
will be displayed; slide the switch to LO and the
lowest temperature measured since turn-on or reset
will be displayed.
w SOURCE/OFF/READ Switch
Select “ SOURCE” to output in °C, °F or ohms.
Select “ READ” to read an RTD sensor or ohms.
e EZ-DIAL™ KNOB
SOURCE: Turn the knob to adjust the output
level. Turn clockwise to increase the output,
counter clockwise to decrease the output in 0.1°
steps at a time. Push down and turn the
EZ-DIAL knob for faster dialing.
Press and hold the knob for two seconds to store
desired EZ-Check™ HI/LO points in SIMULATE
mode. Continue to press and hold the knob for
two more seconds to start the automatic
ramping.
READ: Press and hold to transfer the current
temperature into the EZ-Check™ HI/LO points.
This clears the HI/LO temperature readings
which will update as the temperature changes.
Double click the knob to get into the PIECAL 311
Configuration Mode. Use configuration to select
°C or °F, T/C Type, Backlight On/Off, Step Size,
Step Time and Auto Off On/Off.
CHANGING BATTERIES
Low battery is indicated by
“BAT” on the display.
Approximately one to four hours of typical
operation remain before the PIECAL 311 will
automatically turn off. To change the batteries;
remove the rubber boot, remove the battery door
from the back of the unit by sliding the door
downward. This allows access to the battery
compartment. Replace with four (4) “AA” 1.5V
batteries being careful to check the polarity.
Replace the battery door and replace the boot. All
stored configuration options (RTD Type,
EZ-CHECK Memories, etc., are reset to factory
settings when the batteries are removed.
Note: Alkaline batteries are supplied and
recommended for maximum battery life and
performance.
Basic Operation
3 2 2 - 1
THERMOCOUPLE
CALIBRATOR
J, T, E, K, mV
HI
Pt100 α=385
AUTOMATED
UNIVERSAL RTD
CALIBRATOR
READ
SOURCE
HI
SET
LO
MAX
READ
MIN
OVERLOAD
Push & Hold
to
Store/Step
Push & Turn
for
Fast Dialing
Double Click
for Options
OFF
°C
138.50Ω
3W 2W 1W 4W
   
100.0