PIECAL 820
Multifunction
Process Calibrator
mA • V •TC • Ω • RTD • Hz
Operating Instructions
PIECAL 820
Multifunction
Process Calibrator
mA • V •TC • Ω • RTD • Hz
Operating Instructions
99 Washington Street Melrose, MA 02176
800.517.8431 TestEquipmentDepot.com
Contents
General Operations
Field & Bench Use, Changing Batteries ..................... 2
Storing EZ-CHECK Outputs, Connections ................. 3
Basic Operation
Switches & Knobs .................................................. 4, 5
Double Click Menus ............................................... 6, 7
Stepping, Auto Off, Backlight .................................. 8, 9
Functions and Hookup Diagrams
Milliamp
Source mA ................................................................ 10
Simulate 2 Wire Transmitters .....................................11
Read mA .................................................................. 12
Power/Measure Transmitters .................................... 13
Voltage & Millivolt
Source mV/V ............................................................ 14
Read mV/V .............................................................. 15
Thermocouple
Source T/C ............................................................... 16
Read T/C Sensors .................................................... 17
Resistance
Source Resistance ................................................... 18
Read Resistance & Check Continuity ...................... 19
RTD
Source RTD .............................................................. 20
Read RTD Sensors .................................................. 21
Frequency
Source Frequency .................................................... 22
Read Frequency ....................................................... 23
Specifications
General ................................................................ 24-28
Thermocouple Ranges & Accuracies .................. 29-31
RTD Ranges & Accuracies ....................................... 32
Additional Information
Warranty & Accessories ........................................... 33
Page 1
General Information
Technician friendly operation
The unique and intuitive EZ-DIAL Double Click Menu makes it
easier to setup than other multifunction calibrators. Uses the same
menus as the single function PIECAL Evolution Calibrators
. Icons
on the display indicate where to plug in the test leads.
Use it as a milliamp and voltage calibrator
Source 0 to 24.00 mA, 0 to 10.25 V & -10.00 to 80.00 mV dc
Read 0 to 24.00 mA, 0 to 10.25 V, 0 to 60.0 V and -10.00 to
80.00 mV dc
Simulate 2-Wire Transmitters & Power up transmitters & loops
Calibrate in temperature with 0.1°C/°F resolution
Types J, K, T, E, R, S, B, N, G, C, D, L (J DIN), U (T DIN) & P II
Pt 100 Ohm (3850, 3902, 3916, 3926) & 1000 Ohm (3850) RTD
Copper 10 & 50 Ohm, Nickel 100 and 120 Ohm RTD
Checkout flow and vibration systems
Source & read frequency from 0 to 2000 CPM (Counts-PerMinute), 0.00 to 999.99 Hz, 0.0 to 9999.9 Hz and 0.000 to 20.000 kHz.
Checkout resistance instruments, loop & wiring problems
Source and read resistance from 0.0 to 401.0 and 0 to 4010
ohms. ‘
Beep’ out connections with the built-in continuity checker.
Guaranteed compatible with all instrumentation
Works with Rosemount & Honeywell Smart Transmitters, PLCs,
DCSs, Multi-Channel Recorders and other pulsed excitation devices.
Easy to read
Turn on the backlight & easily see the display in dark areas.
Quickly set any three outputs plus automatic stepping & ramping
Easily set any value quickly with the adjustable “DIAL” plus
store any three output settings for instant recall with the
EZ-CHECK™ switch. Choose between 2, 3, 5 & 11 steps or
RAMP to increase and decrease the output between Zero and
Span from 5, 6, 7, 8, 9, 10, 15, 20, 25, 30 and 60 seconds.
Measure temperature sensors, frequency pickups, mA & V
Check the values of your process sensors. Instantly recall
MAX and MIN values to see process variability.
Page 2
Operating Instructions
FIELD & BENCH USE
PIECAL 820 comes with a carrying case designed for handsfree operation and a rubber boot with a built-in tilt stand. The
PIECAL 820 is held in the case by elastic straps for use with the
carrying case open. The tilt stand is easily raised by pulling the
stand until it locks into place.
CHANGING BATTERIES
Low battery is indicated by a battery symbol on the display.
Approximately one to four hours of typical operation remain before
the PIECAL 820 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 (T/C Type,
EZ-CHECK Memories, etc.) are reset to factory settings when the
batteries are removed.
Note: Alkaline batteries are supplied and recommended for
typical battery life and performance. Optional rechargeable
batteries (charged externally) are available.
Page 3
Operating Instructions
STORING HI and LO EZ-CHECK Source Outputs
Speed up your calibration by storing Span & Zero output setting
for instant recall with the EZ-CHECK switch.
1) Store your high (SPAN) output temperature by moving the
EZ-CHECK switch to the HI position and turning the EZ-Dial
knob until the desired output value is on the display. Press
and hold the EZ-Dial knob until STORED appears to store
the value. Release the EZ-Dial knob.
2) Store your low (ZERO) output value by moving the EZ-CHECK
switch to the LO position and turning the EZ-Dial knob until
the desired output value is on the display. Press and hold the
EZ-Dial knob until STORED appears to store the value.
Release the EZ-Dial knob.
3) Instantly output your SPAN and ZERO output settings by
moving the EZ-CHECK switch between HI and LO. You may
also select any third output setting (such as mid-range) using
the SET position on the EZ-CHECK switch.
Connections
PIECAL 820 has banana jacks compatible with standard banana
plugs or retractable safety banana plugs. Included with your
calibrator are a pair of test leads with alligator clips for mA, V &
Hz connections. Four test leads with spade lugs are also
included for 2, 3 and 4 Wire RTD connections. Thermocouple
connections are made through a miniature thermocouple socket.
T/C
All mA∙ Read V
-
23
RTD
Ω
RTD
Ω
65
4
+
Source & Read Hz∙ mV
Source V∙pH
-
+
1
-
Page 4
SOURCE
HI
SET
LO
MAX
READ
MIN
READ
T/C
+
-
q EZ-CHECK™ SWITCH
SOURCE: Instantly output two preset settings by moving the
EZ-CHECK™ switch to the “LO” position or “HI” position.
For fast
three point checks select the “SET” position. The PIECAL 820
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 PIECAL 820 will
display the current reading from the sensor or device being measured.
Slide the switch to MAX and the highest value measured since turn-on
or MAX/MIN reset will be displayed; slide the switch to MIN and the
lowest value measured since turn-on or MAX/MIN reset will be
displayed.
Operating Instructions
Basic Operation
Page 5
w SOURCE/OFF/READ Switch
Select “SOURCE” to output mA, V, T/C, Ω, RTD or Hz.
Select “READ” to read mA, V, T/C, Ω, RTD or Hz.
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 one
least significant digit 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 two more seconds to start the automatic ramping.
READ: Press and hold to transfer the current temperature into
the EZ-Check™ MIN/MAX points. This clears the MIN/MAX
readings which will update as the input value changes.
SELECTING FUNCTIONS
The EZ-DIAL knob is used to setup the PIECAL 820 to match
the instrument to be calibrated or signal to be measured. Each
time you turn on the PIECAL 820 the LCD displays the following
screen for about 1 second followed by operating in the function
used the last time it was operated.
Double Click the EZ-DIAL knob to change the function of the
calibrator and to select ranges, units and other user settings.
Each function (mA, V, T/C, Ohms, RTD, Frequency) has two
pages of menus. The first menu page has settings for the function and the second menu page has settings for STEPPING,
AUTO OFF and BACKLIGHT. Settings are remembered even
with the power off but are reset when the batteries are changed.
MODEL 820
DOUBLE CLICK
EZ-DIAL KNOB
FOR CONFIGURATION
V #.##
Operating Instructions
Basic Operation
Page 6
Operating Instructions
Double Click Menus
MAIN
> EXIT (1/2)
FUNCTION mA
MODE SOURCE 2W SIM
UNITS mA %
HART 250Ω ON OFF
> EXIT (1/2)
FUNCTION V
RANGE 10V 80mV
> EXIT (1/2)
FUNCTION mA
MODE READ PWR MEAS
UNITS mA %
HART 250Ω ON OFF
Double click the EZ-DIAL knob to access the Double Click
Menus to select each function and the options for each function.
Available choices are shown in grey.
> EXIT (1/2)
FUNCTION V
RANGE 10V 60V 80mV
Source mA & Simulate 2 Wire Transmitters
Read mA & Power/Measure Transmitters
Source Volts & Millivolts
Read Volts & Millivolts
> EXIT (1/2)
FUNCTION FREQ
RANGE 20KHZ 10000HZ 1000HZ 2000CPM
Source & Read Frequency
Page 7
> EXIT (1/2)
FUNCTION T/C
UNITS °C °F
T/C TYPE J K E T R S B N L U G C D P
COLD JUNC ON
> EXIT (1/2)
FUNCTION RTD
UNITS °C °F
RTD Pt 100 a=3850 [* RTD Types]
WIRE MODE 234W
> EXIT (1/2)
FUNCTION RTD
UNITS °C °F
RTD Pt 100 a=3850 [* RTD Types]
WIRE MODE 3W 2W 4W
* RTD Types: Pt 100 a=3850, a=3902, a=3916, a=3926
Pt 1000 a=3850; Cu 10 a=4274, Cu 50 a=4280
Ni 120 a=6720, Ni 110 a=5801
Source & Read Thermocouples
Source RTD
Operating Instructions
Double Click Menus
Read RTD
>EXIT (1/2)
FUNCTION OHMS
RANGE 400Ω 4000Ω
WIRE MODE 234W
>EXIT (1/2)
FUNCTION OHMS
RANGE 400Ω 4000Ω CONT
WIRE MODE 3W 2W 4W
Source Ohms
Read Ohms
Page 8
To change the Automatic Stepping settings
Double click the e DIAL KNOB at any time the unit is on and
the following typical display (will be different for each FUNCTION)
will appear for 15 seconds:
Turn the
e DIAL KNOB to move to the second menu
(FEATURES) page.
Turn the e DIAL KNOB to move through the menu. Press the e
DIAL KNOB to toggle between OFF and ON or to change the
STEPS/RAMP and the STEP/RAMP TIME settings. These
settings are remembered even with the power off.
EXIT MENU - exits this menu immediately and saves any
changes. Menu will automatically exit after 15 seconds of
inactivity.
AUTO OFF - If AUTO OFF is ON, the unit will turn off after 30
minutes of inactivity to save battery life. If AUTO OFF is OFF the
unit will stay on until the POWER SWITCH is moved to the off
position.
FEATURES
> EXIT (2/2)
AUTO OFF ON
BACKLIGHT ON
STEPS/RAMP 3
STEP/RAMP TIME 5
MAIN
> EXIT (1/2)
FUNCTION mA
MODE SOURCE
UNITS mA
HART 250Ω ON
Operating Instructions
Double Click Menu - STEPPING, AUTO OFF & BACKLIGHT
Page 9
To start the Automatic Stepping
Start automatic stepping or ramping by placing the EZ-CHECK
Switch into the HI or LO position then press and hold the e
DIAL KNOB for 6 seconds (the word STORE will appear on the
display after 3 seconds and continue to press the EZ-DIAL
KNOB) until the word STEP appears on the display. The word
STEP will appear on the display anytime the selected automatic
function is running. Stop the stepping or ramping by again
pressing and holding the
e DIAL KNOB for 3 seconds.
BACKLIGHT - If BACKLIGHT is ON the backlight will light all the
time the unit is powered up. For maximum battery life turn the
backlight off when using the calibrator in areas with enough
ambient light to read the display.
STEPS/RAMP - pressing the knob will cycle through 2, 3, 5, 11
and RAMP. The endpoints of the steps or ramp are based on the
values stored in the HI and LO EZ-CHECK outputs.
2 steps will automatically switch between the values stored in
the HI & LO EZ-CHECK (0 & 100%).
3 steps between the HI, Midpoint and LO EZ-CHECK (0, 50
& 1
00%).
5 steps between the HI and LO EZ-CHECK in 25%
increments (0, 25, 50, 75 & 100%).
11 steps between the HI and LO EZ-CHECK in 10%
increments (0, 10, 20...80, 90 &100%).
RAMP continuously ramps up and down between the HI and
LO EZ-CHECK outputs.
STEP/RAMP TIME - pressing the knob will cycle through 5, 6, 7,
8, 9, 10, 15, 20, 25, 30 and 60 seconds.
Operating Instructions
Double Click Menu - STEPPING, AUTO OFF & BACKLIGHT
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