Practical Instrument Electronics
82 E. Main Street Suite 3.14 • Webster, NY 14580 Tel: 585.872.9350 • Fax: 585.872.2638 • sales@piecal.com • www.piecal.com
Process Voltage Calibrator
NEW!
Source & Read DC Voltages
Calibrate recorders in live loops
Source pH
• Technician friendly operation
Intuitive EZ-DIAL Double Click Menu makes it easier to setup than
other calibrators.
dark areas of the plant. Connections diagrams are indicated on the
display for each function along with a labeled connector panel on
the top.
• Calibrate with Confidence
Accurate to
over current is indicated by an audible alarm, flashing display and
the OVERLOAD LED will light.
Turn on the backlight to easily see the display in
±0.02% of Reading + 0.01% Full Scale. Out of range or
PIE 235
• Source three ranges of mV & V dc plus percent of 1 to 5 volts
With the 235 you can check, calibrate and measure all your voltage,
millivolt and pH signal instruments in your plant. Source -500.00 to
999.00 mV, 1.000 to 5.000 V, 0.0 to 100.0% of 1 to 5 V; 0.000 to
20.000 V.
• Power your loops with over 1,000 Ohm loads
The 20.000 V range has an extended span of up to 24.000 Volts
giving you a portable source for powering your loops.
• Read DC volts
The 235 can measure from -500.00 to +999.00 mV, 0.000 to 5.100 V,
0.0 to 100.0 % of 1 to 5 V; 0 to 20.000 V and 0.00 to 60.00 V DC. Use it to check
loop power supplies, I/V converters, 1 to 5 Volt signals, and other voltages.
•
Save time calibrating recorders and monitors in 4 to 20 mA loops
Other brands of calibrators require that you break the loop to calibrate voltage inputs. With the PIE 235 you
simply clip the test leads across the voltage inputs in a live 4 to 20 mA loop without disconnecting any wires.
• Simulate pH probes into transmitters & analyzers
Use the pH simulator to verify proper operation of pH devices before you place a probe into a calibrated buffer.
• Quickly set any three outputs plus automatic stepping & ramping
Easily set any value with the adjustable “DIAL” plus store any three output settings for instant recall with the
EZ-CHECK™ switch. 2, 3, 5 & 11 steps automatically increment output in 100%, 50%, 25% or 10% of span plus
continuous ramp. Set step/ramp time to 5, 6, 7, 8, 9, 10, 15, 20, 25, 30 & 60 seconds.
Actual Size
• Designed for you by experienced calibrator manufacturers
PIE Calibrators are designed and built by members of the same team that designed and built the calibrators
manufactured by Fluke* under the Altek* label. The 235 improves upon other brands by including a rubber boot,
backlit display with larger digits, higher accuracy and more ranges for flexibility.
* PIE Calibrators are not manufactured or distributed by Fluke Corp or Altek Industries Inc, manufacturers of Altek Calibrators.
Easy to use
• Technician friendly operation
Intuitive EZ-DIAL Double Click Menu makes it easier to setup than other
calibrators.
Turn on the backlight to easily see the display in dark areas
of the plant. Connections diagrams are indicated on the display for each
function along with a labeled connector panel on the top.
Check your process voltage inputs
• Source three ranges of mV & V dc
With the 235 you can check, calibrate and measure all
your voltage, millivolt and pH signal instruments in your
plant. Source -500.00 to 999.00 mV, 1.000 to 5.000 V,
-25.00 to +100.00% of 1-5 V; 0.000 to 20.000 V. The
20.000 range has an extended span to power loops with
up to 1,200 Ohm loads with 24.000 Volt output.
Measure your process voltages
• Read DC volts
The 235 can measure from -500.00 to +999.00 mV,
0.000 to 5.100 V, -25.0 to 125.0 % of 1 to 5V; 0 to
20.000 V, 0.00 to 60.00 V DC. Use it to check loop
power supplies, I/V converters, 1 to 5 Volt signals, and
other voltages.
Connections
pH Simulator
• Simulate pH probes into transmitters & analyzers
Use the pH simulator to verify proper operation of pH
devices before you place a probe into a calibrated buffer.
Adjusting the pH transmitter or analyzer without a probe
allows you to make sure the device is calibrated and
doesn’t require too much offset with the probe. If the
probe requires more than the manufacturer’s
recommendations (typically 5%) it is time to replace the
probe. The 235 simulates 0.000 to 14.000 pH @ 25°C
corresponding to +414.12 to -414.12 mV.
Calibrate 1 to 5 V instruments in live 4 to 20 mA loops
• Test 1-5 V inputs without disconnecting 4-20 mA loop wiring
Calibrate 1 to 5 volt instruments without breaking the loop or turning off the loop current. You do not need to remove
any 250 Ohm resistors. The PIE Model 235 drives only the voltage instrument it is connected to and has no effect
on any other instruments in the 4 to 20 mA loop.
4.00 mA
Loop
Power
Supply
12.00 mA
Loop
Power
Supply
Transmitter
input signal at
50% of Span
Transmitter
regulating
current to
12.00 mA
Control loop with the transmitter limiting the
current to 12.00 mA.
The recorder indicates 12.00 mA.
mA
IN
250Ω
mA
Transmitter
input signal at
50% of Span
Control loop with the transmitter limiting the
current to 12.00 mA.
The 235 sourcing 1V is clipped across the
mA input driving the recorder to 4.00 mA.
Transmitter
regulating
current to
12.00 mA
IN
250Ω
PIE 235 Specifications
(Unless otherwise indicated all specifications are rated from a nominal 23°C, 70% RH for 1 year from calibration)
General
Operating Temperature
Range
Storage Temperature Range -30 to 60 °C (-22 to 140 °F)
Temperature effect ≤ ± 0.005 %/°C of Full Scale
Relative Humidity Range 10 % ≤RH ≤90 % (0 to 35 °C), Non-condensing
Common Mode Rejection 50/60 Hz, 100 dB
Normal Mode Rejection 50/60 Hz, 50 dB
Noise ≤ ± ½ Least Significant Digit from 0.1 to 10 Hz
Size 5.63 x 3.00 x 1.60 in, 143 x 76 x 41mm (L x W x H)
Weight 12.1 ounces, 0.34 kg (including boot & batteries)
Batteries Four “AA” Alkaline 1.5V (LR6)
Battery Life
Low Battery Low battery indication with nominal 1 hour of
Protection against
misconnection
Display High contrast graphic liquid crystal display with
-20 to 60 °C (-5 to 140 °F)
10 % ≤RH≤ 70 % (35 to 60 °C), Non-condensing
≥ 50 hours
operation left
Over-voltage protection to 60 vrms (rated for 30
seconds). Red LED and audible alarm indicates
OVERLOAD for out of range conditions.
0.35” (9 mm) high digits on main & 0.2” (5 mm) on
mA display. LED backlighting for use in low lit areas.
Specifications subject to change without notice.
Voltage Source
Ranges and Resolution
-500.00 to 999.00 mV
1.000 to 5.000 V
0.000 to 20.000 V
-25.0 to 125.0% of 1 to 5 V
Source Current
Sink Current > 16 mA
Output Impedance ≤ 0.3 Ohm at ≤ 20 mA load
Short Circuit Duration Infinite
Voltage Read
Range and Resolution
-500.00 to 999.00 mV
1.000 to 5.000 V
0.000 to 20.000 V
-25.0 to 125.0% of 1 to 5 V
0.00 to 60.00 V
Input resistance ≥ 1 MΩ
pH Source
Accuracy in mV
Accuracy in pH
Accuracy
≤ ± (0.02 % of Reading + 0.01% of Full Scale)
≤ ± (0.02 % of Reading + 0.002 V)
≤ ± (0.02 % of Reading + 0.01% of Full Scale)
≤ ± 0.1%
≥ 20 mA
Accuracy
≤ ± (0.02 % of Reading + 0.01% of Full Scale)
≤ ± (0.02 % of Reading + 0.002 V)
≤ ± (0.02 % of Reading + 0.01% of Full Scale)
≤ ± 0.1%
≤ ± (0.02 % of Reading + 0.02 V)
≤ ± (0.02 % of Reading in mV + 0.1 mV)
≤ ± 0.003 pH @ 25°C
Hands free carrying case with
pockets for the PIE 235 & test leads.
Designed to be worn around your
neck so that you can safely use both
hands to calibrate.
Practical Instrument Electronics
82 East Main Street Suite 3.14 • Webster, NY 14580 USA
Tel: 585.872.9350 • Fax: 585.872.2638
sales@piecal.com • www.piecal.com
Copyright © 2016 All rights reserved 235-9001 Rev C 29 Mar 2016
Ordering Information
Description Part No
PIE Model 235 Process Voltage Calibrator .................................................PIE Model 235
Included:
Four “AA” Alkaline batteries, NIST Traceable Calibration Card
Black Rubber Boot ............................................................................................. 020-0209
Evolution Hands Free Carrying Case ................................................................... 020-0211
Evolution mA/V Test Leads ................................................................................. 020-0207
1 Red & 1 Black Lead
Optional
Certified Test Data when ordered new from the factory ...................................... Certified Test Data-1
Three Year Repair/Replacement Warranty ........................................................... RP-WAR-A
Ni-MH 1 Hour Charger with 4 Ni-MH AA Batteries ............................................. 020-0103
with Banana Plugs & Alligator Clips
Standard Warranty
Our equipment is warranted against defective material and
workmanship (excluding batteries) for a period of three years
from the date of shipment. Claims under warranty can be made
by returning the equipment prepaid to our factory. The equipment
will be repaired, replaced or adjusted at our option. The liability
of Practical Instrument Electronics (PIE) is restricted to that
given under our warranty. No responsibility is accepted for
damage, loss or other expense incurred through sale or use of
our equipment. Under no condition shall Practical Instrument
Electronics, Inc. be liable for any special, incidental or
consequential damage.
Optional Repair/Replacement Warranty
Under our Repair/Replacement Warranty (RP-WAR-A), our
equipment is warranted against ANY damage or malfunction
that may cause the unit to fail for a period of three (3) years from
the date of shipment.
This warranty is limited to one complete replacement against
any damage or malfunction during the warranty period. If
replaced, the new calibrator will carry our Standard Warranty for
the remainder of the three (3) years or a minimum of one (1)
year from the date of shipment.
Additional Information
PIE Calibrators are manufactured in the USA.
calibrated on equipment traceable to NIST and includes a
Certificate of Calibration. Optional Test Data is available for an
additional charge.
Practical Instrument Electronics recommends a calibration
interval of one year. Contact your local representative for
recalibration and repair services.
This product is
Flip out stand for bench use
Available From:
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