Practical Instrument Electronics
Model 532
Practical Instrument Electronics, Inc. Copyrigh t 2011. All rights reserved.
1-8
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mA/V Loop Calibrator
with Loop Diagnostic
A. Basic Keypad O pera tions
Operati n g Instruct ions
EZ-Check™ Switch/EZ-Step™ Pushbut ton
Slide the switch to select the user stored
values for calibration points. Press the
button to adjust the output by the user
defined step size. Press and hold the
button to activate the auto step/ramp
mode.
SOURCE/STEP S IZE But t o n
Press and release SOURCE/ ST EP SIZE to
change source modes. These are:
• Source Milliamps
• 2-Wire Transmitter Simulate
• Source Volts
Press and hold SOURCE/STEP SIZE to
change step size. Refer to section H.
ON/OFF Button
Press ON/OFF to tur n the Model 532 on or
off.
UNITS/ STEP TIM E Button
Press and release UNITS/STEP TIME to
change how current is displayed: either in
millia mperes or % of 4-20 mA. Voltage is only
displayed in volts.
Press and hold UNITS/STEP TIME to change
step size. Refer to section H.
READ/SOAK TIME Button
Press and release READ/SOAK TIME to
change read modes. These are:
• Read Milliamps
• Power and Measure 2-Wire Transmit ter
• Read Volt s
Press and hold READ/SOAK TIME to change
soak time. R efer to sectio n H.
STORE/CLEAR/DIAGNOSTIC Button
In any source mode:
Press STORE/CLEAR/DIAGNOSTIC to save
the current reading in the EZ-Check HI or LO
position. The EZ-Check switch must be set to
HI or LO. The display will flash “STORED” to
confirm.
In any read mode:
Press STORE/CLEAR/DIAGNOSTIC to clear
the values saved in the EZ-Check HI and LO
positions. The display will flash “CLEARED” to
confirm.
Press and hold STORE/CLEAR/DIAGNOSTIC
to activate dia gnost ic mo d e. S ee s ection I.
EZ-Dial™ Knob
Turn the EZ-Dial knob to adjust the output
level. Press and turn to adjust 100X faster.
82 E. Main Street Suite 3.14 • Webster, NY 14580 Tel: 585-872-9350 • Fax: 585-872-2638 sales@piecal.com • http://www.piecal.com/
532-9002 Rev C 7/13/11
Model 53 2 Operating Instructions
82 E. Main Street Suite 3.14 • Webster, NY 14580
Tel: 585-872-9350 • Fax: 585 -872-2638
sales@piecal.com • http://www.piecal.com/
Practical Instrumen t Electro nics, Inc. Copyr i ght 2011. All rights reserved.
B. Model 532 Conf ig ur ation
Press the EZ-Dial Knob while turning the Model 532 on to access the
config uratio n mo d e . Turn the EZ-Dial Knob to select configur a t io n items.
Press the EZ-Dial Knob to change co nf igura tion items . Turn the u ni t off or
just wait approximately 8 seconds to exit the configuration mode.
Auto Off - ON (default)/OFF
Auto Off is ON, by default, to save battery life by turning the unit off after 30 minutes of inactivity. Turn
Auto Off to OFF to prevent automatic shutdown. This is typically useful for manual loading or continuous
use.
EZ-Step - ON/OFF (default)
If EZ-Step is ON manual and automatic stepping/ramping is available. If EZ-Step is OFF the EZ-Step
pushbutton will be disabled and the step direction indicator will not be displayed.
HART® Compatibility Mode - ON/OFF (default)
The Model 532 has a HART® compatibility mode. This mode is useful when the devices being powered
communica te us ing the HART® protocol. In this mode the Model 532 connects a 250 Ω load resistor in
series with the output in both Source and Power Measure 2-Wire transmitter modes. This eliminates the
requirement of an external 250 Ω load resistor. This resistor is typically shown in connection diagrams and
manuals for HART® devices.
If HART® Compatibility Mode is ON, a 250 Ω load resistor is automatically switched in series with the
output in Source and Power Measure 2-Wire Transmitter modes. The output compliance with HART®
Compatibility Mode ON is 950 Ω at 20 mA.
If HART® Compatibility Mode is OFF there is no 250 Ω load resistor in series with the output. This will
increase the output compliance voltage to drive 1200 Ω at 20 mA.
EZ-Check HI/LO R e a dings ON/OFF (default)
If the EZ-Check HI/LO Readings option is ON, the highest and lowest readings will automatically be
saved in the HI and LO EZ-Check™ positions.
If this option is OFF the HI and LO positions will show the current reading.
Loop Diagnostic ON (default)/OFF
Loop Diagnostic may be turne d off to prevent entry into diagnostic mode. This may mak e th e Model 532
simpler to operate by eliminating accidental entry into diagnostic mode.
Factory Reset ON/OFF (default)
If Factory Reset is ON, the unit will restore all factor y de faults when the Mod el 532 is turned OFF an d back
ON. This will reset any changes made in the Model 532 Configuration options, returning the unit to its
simplest fac tory configur ation.
532-9002 Rev C 7/13/11
2-8
Model 53 2 Operating Instructions
82 E. Main Street Suite 3.14 • Webster, NY 14580
Tel: 585-872-9350 • Fax: 585 -872-2638
sales@piecal.com • http://www.piecal.com/
Practical Instrumen t Electro nics, Inc. Copyr i ght 2011. All rights reserved.
C. EZ-Dial Knob
Adjust the output up and down with the EZ-Dial knob. The increment is 0.001 mA (or 0.01 % if display
units are % of 4-20 mA.) Press while turning to adjust 100X faster – 0.100 mA (or 1.00 %.)
D. EZ-Check Switch
The E Z-Check™ switch has three positions -- high, set, and low. Its position is shown at the left edge of
the display with “HI” and “ LO” indicators. Use of the EZ-Check switch depends on mode:
Source Modes:
Slide th e EZ-Check switch to the HI and LO positions to recall the settings stored in those
positions. While in the HI and LO positions, dial the EZ-Dial knob to change the display. Press
STORE/CLEAR to save new settings in the HI and LO positions. The display will flash “STORED” to
confirm.
Hint: For faster calibrations, the position of the switch can be felt. This feature allows continuous
monitoring of the devic e bei ng calibrate d without looking b a ck at the Model 532 display. This is als o useful
in poor lighting or under difficult operating conditions.
Read Modes:
In read modes, the Model 532 calibrator recor d s the maximum and m inimum readings observed in
each mode. Slide the EZ-Check switch to the HI and LO positions to display the readings. Press
STORE/CLEAR to clear the readings. The display will fl a sh “CLEARED” to confirm.
By default, the Mo d el 532 ha s EZ-Check HI/L O Readings OFF. Refer to Model 532 Configura tion, section
B.
E. EZ-Step Pushbutton/ Manual Step
The E Z-Step pushbutton is a feature only in source modes.
Press a nd hold the EZ-Step pushbutton for less than one second to cause the output to step up or down
by the EZ-Step size.
The E Z-Step direction is indicated on the display ( or ). Press the EZ-Dial knob to c hange the
step directio n.
Stepping and auto step/ramp limits are defined by the EZ-Check HI and LO settings. The step direction
changes when a limit is reached.
The step size is computed as the difference between the EZ-Check HI and the EZ-Check LO divided by
the number of steps. See section H.
By default, the Mo d el 532 ha s EZ-Step OFF. Refer to Model 532 Configuration, section B.
F. Auto Step/Ramp
Press the EZ-Step pushbutton for more than one second t o activate auto step / ramp mode. The Model
532 will automatically step by the selected EZ-Step size and ti me . Press the EZ-Step pushbutton again
to deactivate auto step/ramp mode.
The E Z-Step direction is indicated on the display ( or ). Press the EZ-Dial knob to c hange the
step direction. The step direction can be changed while automatically stepping/ramping.
532-9002 Rev C 7/13/11
3-8
Model 53 2 Operating Instructions
82 E. Main Street Suite 3.14 • Webster, NY 14580
Tel: 585-872-9350 • Fax: 585 -872-2638
sales@piecal.com • http://www.piecal.com/
Practical Instrumen t Electro nics, Inc. Copyr i ght 2011. All rights reserved.
ramp
time
soak time
Stepping and auto step/ramp limits are defined by the EZ-Check HI and LO settings. The step direction
changes when a limit is reached.
Figure 1 shows how the Step/Ramp Parameters are used to configure automatic stepping/ramping.
Figure 1
24
20
step tim e = ramp t i m e ÷ # of steps
16
12
mA
8
step size = (EZ-Step HI – EZ-Step LO ) ÷ # of steps
4
0
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
time
Note: The Model 532’s ability to detect overload/undervoltage conditions may be limited by the rate of
change in the output when using automatic stepping/ramping. Turn auto step/ramp off while connecting
or disconnecting the Mode l 532.
G. Quick Reference Bar Graph
The Quick Reference Bar Graph indicates the input and output level on the Model 532 in % of 4-20 mA
with 1% resolution.
532-9002 Rev C 7/13/11
4-8
Model 53 2 Operating Instructions
82 E. Main Street Suite 3.14 • Webster, NY 14580
Tel: 585-872-9350 • Fax: 585 -872-2638
sales@piecal.com • http://www.piecal.com/
Practical Instrumen t Electro nics, Inc. Copyr i ght 2011. All rights reserved.
H. Manual Step and Auto Step/Ramp Param eter
To Change the EZ-Step Size:
1. Press and hold the SOURCE/STEP SIZE button for more than
¾ of a second.
2. The display will flash “EZ-STEP SI ZE”.
3. Turn the EZ-Dial knob to select from 2 to 16 steps between
th e E Z-Check limits.
4. Turn the EZ-Dial clockwise past 16 steps t o select continuou s
ramp mode.
5. Press th e SO UR CE/STEP SIZE but to n ag a i n to return to the
normal display.
Note: If the EZ-Step
OFF”. Refer to Model 532 Configuration, section B.
To Change the EZ-Step Time:
1. Press and hold the UNITS/S TEP TIME button for more than
¾ of a second.
2. The display will flash “EZ-STEP TIME”.
3. Turn the EZ-Dial knob to select from 5 to 900 second ramp
time. The time per step is calculated based on the selected EZ-Step
size.
4. Press the SOURCE/STEP SIZE button to return t o the normal
display.
option is turned off, the display will flash “EZ-STEP
To Change the Soak Time:
1. Press and hold the READ /S OAK TIM E button for m ore than
¾ of a second.
2. The display will flash “SOAK TIME”.
3. Turn the EZ-Dial knob to select from 0 to 900 second soak
time.
Note: A soak time of 0 defeats the soak period. The step time will be
used instead.
4. Press the READ/ S OAK TIME but to n ag ain to return to the
normal display.
To Change the EZ-Step
TM
Direction:
1. Press and release the EZ-Dial knob without turning.
2. The display will change to show the EZ-Step direction selected ( or ).
532-9002 Rev C 7/13/11
5-8
Model 53 2 Operating Instructions
82 E. Main Street Suite 3.14 • Webster, NY 14580
Tel: 585-872-9350 • Fax: 585-872-2638
sales@piecal.com • http://www.piecal.com/
Practical Instrum en t Electronics, Inc. Copyrigh t 2011. All rights reserved.
Loop current is displayed. The Model 532 automatically performs a test
highlighted if there is less than 2 volts pres ent.
ighted if it exceeds the Model 532’s output capability (20 mA into
I. Loop Diagn ostic
Press and hold the STORE/CLEAR/DIAGNOSTIC button for more than ¾ of a second to activate loop
diagn ostic mode. This is a vailable in each of the Model 532’s opera ting modes.
Read Modes:
Read Milliamps
Loop current is displayed.
Power and Measure 2-Wire Transmitter
Loop current, voltage, and resi st ance is displayed.
Read Volts
Voltag e is dis played.
Source Modes:
The EZ-Dial knob, EZ-Check switch, a nd EZ-Step pushbutton
function normally when the loop diagnostic is activated.
Source Milliamps
Loop current, voltage, and resi st ance is displayed. The resistance is
highlighted if it exceeds the Model 532’s output capability (1200 Ω at
20 mA with HART Compatibility disabled.)
2-Wire Transmitter Simulate
every 7 seconds to compute the loop power supply voltage and loop
resistance. The Model 532 requi res approximately 2 volts across its
termi na l s to op e ra te in 2 Wir e Si mulate mode. T he v o lta ge display is
Source Volts
Loop current, voltage, and resi st ance is displayed. The resistance is
highl
1200 Ω with HART Compatibility disabled.)
532-9002 Rev C 7/13/11
6-8
Model 53 2 Operating Instructions
82 E. Main Street Suite 3.14 • Webster, NY 14580
Tel: 585-872-9350 • Fax: 585-872-2638
sales@piecal.com • http://www.piecal.com/
Practical Instrum en t Electronics, Inc. Copyrigh t 2011. All rights reserved.
Read Milliamp
Power and Me as ure 2 Wire Transmitter
mode to test a transmitter’s ability to control
In all l oop diagnostic modes, AC voltage is displayed. If more th an 2 VA C is present on the Model 532’s
termi na l s , the dis play is highl ighted to alert the user of a potential problem.
In all l oop diagnostic modes, HART activity is indica ted with “♥ HART DETECTED ♥” . The ♥ symbols
flash on and off with the actual HART messages.
J. Modes of Oper a tion
Connect the Model 532 in series with
the process loop to monitor current.
Observe correct polarity. Current
limiting above 24.000 mA is indicated
by a flashing “CURRENT LIMITED”
display.
The Model 532 measures +/- 30 VDC with 4X
overrange ability. The display flashes
“OVERRANGE” when the 30 volt limit is
exceeded. 0.001 volt resolution below 24.00
volts provides the ability to calibrate 1-5 volt
instrumentation.
The Model 532 p rovides power to the process
loop while displaying output current. Use this
loop curr ent. Current lim iting above 24.000
mA is indicated by a flashing “CURRENT
LIMITED” display.
Read Volts
532-9002 Rev C 7/13/11
7-8
Model 53 2 Operating Instructions
82 E. Main Street Suite 3.14 • Webster, NY 14580
Tel: 585-872-9350 • Fax: 585-872-2638
sales@piecal.com • http://www.piecal.com/
Practical Instrum en t Electronics, Inc. Copyrigh t 2011. All rights reserved.
Source Milliamp
2 Wire Transmitter Simulate
Source Vol t s
Connect the Model 532 direct ly to 4-20 mA
receiver equipment, alarms, panel meters,
etc. Use the EZ-Dial Knob and EZ-Check
Switch to adjust loop current. The display
flashes “HIGH Ω” when the loop resis ta n c e is
too high or the leads are open.
Substitute the Model532 for a 2 wire
transmitter. Use th e EZ-Dial Knob and EZCheck Switch to adjust loop current. At
least 2 volts of loop power is req uired, else
the display flashes “CHECK LOOP SUPPLY.”
The Model 532 sourc e s 0. 0 00-24.000 volts.
This is us e ful for powering transmit te rs and
receiver equipment. Use the EZ-Dial Knob
and EZ-Check Switch to adjust output
voltage. The display flashes “LOW Ω” when
the output is overloaded.
K. Warranty
Our equipment is g ua ran te e d a g ai nst d e f e ctive material and workmanship (e xcluding batteries) f or a p e riod o f thre e years from the
date of shipment. Claims under guarantee can be made by returning the equipment pre p aid to our factory. The equipment will be
repaired, rep lace d or a d juste d a t our op t ion. The lia b ilit y of P ractical Instrument Ele ctronics (PIE) is restri cte d to th at given under our
guarantee. No re sp onsib il ity is a ccep te d for damage, loss or other ex p ense incurred through sale or use of our equipment. Under no
condition shall Practical Instrument Ele ctronics, Inc. be liab le f or an y sp e cia l, incid e n tal or consequential damage.
532-9002 Rev C 7/13/11
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