Electronics
PIECAL 134
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/
1-4
j
ƒ
4-20 Milliamp Loop Calibrator
Operati n g Instructions
Practical Instrument
Basic Keypad O pera tions
EZ-Check™ Switch
SOURCE mode: Slide the switch to select from Hi and low range p re -
set values and the mid ranger (Dial) is selectab le . Dial the mid range
value and it w ill store the value with-in 5 seconds automatically.
READ mode: Slide the switch to recall minimum and maxim u m
readings. P re ss t he EZ-Dial™ Knob to clear the stored value s.
k SOURCE/OFF/READ Switch
Slide the SOURCE/OFF/READ Switch to SOURCE to
output a mA signal and to do 2 - wire transmitter
simulation. Use the READ posit ion t o read mA signal and
power & measure 2 – wire t ransmitter.
EZ-Dial™ Knob
Turn the knob to change display in 0.01mA increments.
Push and turn for faster dialing. Push without turning to
clear EZ-Check™ HI/LO points in READ mode.
Press twice t o se l e ct options:
In Source mode select –
% or mA
2-Wire Transmitter Si mulate
% or mA
low power (15V) or High power (24V)
In Read mode select -
% or mA
Power and Measure 2-Wire Transmitter
% or mA
low power (15V) or High power (24V)
HART® Protocol
An internal jumper enables the Power & Measure 2 – wire
transmitter mode to be compatib le with H A RT®
communicators and tra nsmitters.
EZ-Dial™ Knob
Adjust the output up and down with the EZ-Dial k nob . The in creme n t is 0.01 mA (or 0.1 % if display units are % of 4-20 mA.)
Press while turning to a d just 10X f a ste r – 0.10 mA (or 1.00 %.)
Quick Referen ce Ba r Gra ph
The Quick Reference Bar Graph indicates the input and output level to the PIECAL 134 in % of 4-20 mA with 1.0% re solution. If the
input or output signal is ou tside the normal operating rang e of th e PIECAL 1 34 the Quick Reference Bar Graph in source mode will
flash, in Read mode display over range when above 24.5mA.
Error Cond itions
Bar Graph wi ll flash when any error condit ions exist.
HART® Pr otocol
Remove the back of the case and remove the jumper that is located in position J6 on the PC board . By doing so it place s a 25 0Ω
resister in series with th e output of the PIECAL 134. This internal resiste r e liminates the need to add a n e x t e rnal load resiste r whe n
communicating with a HA RT® transmitter. This reduces the typica l d riv e capability to 950Ω.
Practical Instrument Ele ctr onics, Inc. Copyri ght 2011. All righ t s reserved.
134-9002 Rev B 7/13/11
PIECAL 134 Op e rating 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 Instrument Ele ctr onics, Inc. Copyri ght 2011. All rights reserved.
2-4
T r a n s m i t t e r
I n p u t ( S e n s o r ) ( P r o c e s s
S i g n a l )
( S i m u l a t e
d
I n p u t
)
R e c e i v e
r
P o w e r
S u p p l
y
0
t
o
6
0
V D C
T y p i c a l 2 - W i r e T r a n s m i t t e
r
T r a n s m i t t e r
I n p u t ( S e n s o r )
( P r o c e s
s
S i g n a l ) ( S i m u l a t e d
I n p u t
)
R e c e i v e r P o w e r
S u p p l y 0
t
o
6
0
V D C
T y p i c a l
2 - W i r
e
T r a n s m i t t e r
+
I
N
- R E F + O U T -
EZ-Check™ Switch
The EZ-Check™ switch h a s three positions -- high, dial, and low. Its position is shown at the lef t e d g e of the disp lay with “HI” and
“LO” indicators. N e ithe r in d icator in d icates the middle position. Use of th e EZ -Check switch depends on mode.
Source Mod e s:
Read Modes:
Source Mode
Slide the EZ-Check switch to the HI and LO positions to reca ll the preset settings (Hi=20.00mA & Lo=4.00mA).
Hint: For faster calibrations, the position of the switc h ca n b e felt. This feature allows continuous monitoring of the device
being calibrate d wit hou t look ing b a ck at the PIECA L 134 d isplay. This is also useful in poor lig h ting or under difficult
operating condition s.
In read mode, the PIECAL 134 calibrator records the maxim um a nd minimum readings observed in each mode. Slide the
EZ-Check switch to the Dial position to read the loop . The n S l id e the E Z -Check switch to the HI and LO positions to
display the max a n d min re a dings. Press
EZ-Dial knob to clear the rea d ings. The display will flash “CLEARED” to
confirm.
+
I N
- R E F + O U T -
Source mode uses intern al power to supply current from 0.00-24.00 mA into as much as 1200Ω until the end of battery life. The
calibrator Graph wil l f lash if connected improperly. The three-position EZ-Check sw itch provides instant p rese t 4mA at zero, 12mA at
mid range and 20mA a t f u ll scale outputs. The output is adjusted in 0.01 or 0.10 mA increments (0.1 or 1.0) % display units with
the EZ-Dial knob.
2-Wire Transm itter S imulation Mode
The PIECAL 134 can simulate a 2-wire transmitter in the 4-20 mA or % process loop. In source mode press the EZ-Di al™ Knob twice
to get into the feature op tions. Then p ress the E Z -Dial™ Kno b to select mA 2 – wire. The EZ-Check switch and EZ-Dial kn ob a llow
rapid and fine con trol of loop current.
531-9002 Rev B 7/13/11
PIECAL 134 Op e rating 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 Instrument Ele ctr onics, Inc. Copyri ght 2011. All rights reserved.
3-4
T r a n s m i t t e r
I n p u t ( S e n s o r )
( P r o c e s
s
S i g n a l ) ( S i m u l a t e d
I n p u t
)
R e c e i v e
r
P o w e r
S u p p l
y
0
t
o
6
0
V D C T y p i c a
l
2 - W i r
e
T r a n s m i t t e r
+
I
N
- R E F + O U T -
T r a n s m i t t e r
I n p u t ( S e n s o r ) ( P r o c e s s
S i g n a l )
( S i m u l a t e
d
I n p u t ) R e c e i v e r P o w e r
S u p p l y 0
t
o
6
0
V D C
T y p i c a l
2 - W i r
e
+
I
N
- R E F + O U T -
Power and Meas ur e Tra n smitter Mode
The PIECAL 134 supplies 15Volts or 24 V olts to the transmitter and displays the output in mA or % on the PIECAL 134 display. In
read mode press the EZ-Dial™ Knob twice to get into the feature options. Then press the EZ-Dial™ Knob to select mA P WR - M. Then
turn EZ-Dial™ Knob to select power range (15V or 24V). The EZ-Check switch and EZ -Dial k n ob a llow ra p id a nd fine control of loop
current.
Read Mode
T r a n s m i t t e r
The PIECAL 134 can rea d loop currents from 0-24 mA. The PIECAL 134 limits current in read mode to 25mA to p rotect the devices in
the loop from over v olt ag e o r ov e r curre nt conditions.
531-9002 Rev B 7/13/11
PIECAL 134 Op e rating 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 Instrument Ele ctr onics, Inc. Copyri ght 2011. All rights reserved.
4-4
Operating Tempe rat ure Ra ng e
-20 to 60 °C (-5 to 140 °F)
Miscellaneous
Low battery indication with nominal 1 hour of operation le ft
Accuracy
≤ ± (0.05 % of Reading + 0.01 mA)
Temperature effect
≤ ± 50 ppm/°C of Range
Voltage burden
≤ 1V at 20 mA
Battery life
Typical ≥ 40 Hours
Overload/Current limit protection
nominal ≤ 24 mA
Miscellaneous
Open loop or out of comp lian ce conditions are indicated b y app rop riat e e rror d isp lay
Specifications
General Specifications:
(Unless otherwise ind icated all specifications are rate d from a nominal 23 °C, 70 % RH for 1 year f rom calib ra tion )
Storage Temperature Range -30 to 60 °C (-22 to 140 °F)
Relative Humidi ty Ra nge
Battery 2 AA Alkaline
Common Specifications for all current modes
Ranges 0.00 to 24.00 mA, 25.0 to 125.0% of 4-20 mA
10 % ≤RH ≤90 % (0 to 35 °C), Non-condensing
10 % ≤RH≤ 70 % (35 to 60 °C), Non-condensing
Over-voltage p rote ction to 120 V rms (rated for 30 seconds) or 240 Vrms (rated for 15
seconds)
Bar graph disp lay with 1% resolution of 4-20 mA signa l scale
High contrast graphic liq u id crystal display with 0.45” (11.4 mm) h ig h digits
Resolution(s) 0.01 mA and 0.1 %
Source/Power and Measure 2-Wire Transmitter Specifications:
Loop compliance voltag e ≥ 15 Volts or ≥ 24 Volts
Loop drive capab ility 1200 Ω at 20 mA for e ntire b a tte ry life @ 24 Volts
600 Ω at 20 mA for entire battery life @ 15 Volts
Read mA Specifications:
Overload/Current limit protection nominal ≤24 mA
2-Wire Transmitter Simulation Specifications:
Voltage burden ≤ 2V at 20 mA
Loop voltage limits 2-42 VDC
Battery life ≥ 40 hour typical
Warranty
Our equipment is g ua ran te e d a g ai nst d e f e ctive material and workmanship (excluding batteries) for a period of thre e y e a rs from the
date of shipment. Claims under guarantee can be made by returning the equipment prepaid 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 Electronics (PIE) is restricted to that given under our
guarantee. No re sp onsib il ity is a ccep te d for damage, loss or other expense incurred through sale or use of our equipment. Under no
condition shall Practical Instrument Electronic s, I nc. b e lia b le f or a ny special, incidental or consequential d a mag e .
531-9002 Rev B 7/13/11
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