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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
q
EZ-CHECK™ SWITCH
SOURCE:
Instantly output two preset RTD
temperatures or milliamp values by moving the
EZ-CHECK™ switch to the
“LO”
position or
“HI”
position. For fast three point checks select the
“SET”
position. The PIE 311Plus will remember
the last
“SET”
value, even with the power off.
These values can easily be changed to suit the
calibration requirements. The values stored in the HI
and LO positions are also used for Auto Stepping.
READ:
Slide the switch to the SET position. The PIE
311Plus will display the current temperature from the
RTD sensor or the current milliamp value. Slide the
switch to HI and the highest value measured since
turn-on or reset will be displayed; slide the switch to
LO and the lowest value measured since turn-on or
reset will be displayed.
w
SOURCE/OFF/READ Switch
Select “
SOURCE
” to output in °C, °F, Ohms or
milliamps.
Select “
READ
” to read a RTD sensor, Ohms or
milliamps. Select “
OFF
” to turn the unit off.
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°,
0.01 Ω or 0.001 mA 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 SOURCE
mode. Continue to press and hold the knob for
three more seconds to start the automatic
stepping or ramping.
READ: Press and hold the knob for two seconds
to transfer the current measured value into the
EZ-Check™ HI/LO points. This clears the HI/LO
readings which will update as the measured
value changes.
Double click the knob to get into the PIE 311Plus
Configuration Mode.
CHANGING BATTERIES
Low battery is indicated by a battery symbol on
the display. Approximately one hour of typical
operation remain after the first time the low
battery symbol appears. 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 the boot. All stored
configuration options (T/C Type, EZ-CHECK
Memories, etc.,) are reset to factory settings
when the batteries are removed.
Note:
Alkaline batteries are supplied and
recommended. Purchase the optional Ni-MH
rechargeable batteries for maximum battery life.
Basic Operation
°C
3 2 1 4
100.0
OFF
OVERLOAD
Double Click
Menu
HI
SET
LO
SOURCE
MAX
READ
MIN
READ
Push & Hold
to
Store/Step
Push & Turn
for
Fast Dialing
Diagnostic RTD &
Milliamp Calibrator
2, 3, 4 Wire Detection
Loop Leak Detect ∙ Transmitter Supply
+
-
-
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