Model 531
4-20 Milliamp Loop Calibrator
Practical Instrument Electronics
4 to 20 mA Loop Functions
Source and Read 0.00-24.00 mA
Simulate 2-Wire Transmitters 0.00-24.00mA
Power 2-Wire Transmitters and Read 0.00-24.00 mA
Display current in mA or -25.0-125.0 % of 4-20 mA
Full 4 Digit Display
True ±0.05% of reading accuracy
Bar graph for quick reference of input and output levels
High contrast graphic display viewable in all lighting
conditions and angles
EZ-Dial Knob
Easily adjust output by 00.01 mA (0.1 %) or
0.1 mA (1.0 %)
EZ-Check Switch with EZ-Step Button
3-position tactile switch for true one-handed calibrations
Slide switch for stepping through calibration points
Uses a standard AA Alkaline Battery
Superior battery life up to 40 hours under typical continuous
usage
Easy access to battery compartment
60 VAC Tolerant
Fuse-less protection from accidental misuse
Lightweight and rugged with a solid feel
HART® protocol compatibility mode
HART® protocol compatibility option built-in using a jumper
Datasheet
Features
Description
The Practical Instrument Electronics Model 531 is the result of 30+ years of experience manufacturing and designing calibrators for
the process control industry. Almost all of the Fortune 500 manufacturers use calibrators designed by our engineers. The Model 531
calibrator incorporates all of this knowledge and experience and combines it into one small but powerful product. It has simple, easy
to use controls featuring a large high contrast display with easy visibility without the need for contrast adjustments. The Model 531 is
designed to be a tool with all the practical functions required to get the job done easily without the confusing extras or reading
through a complicated manual. The Model 531 can source and read current in the process loop and simulate, power and measure 2wire transmitters. It fits in your pocket or you can clip in on your belt.
Practical Instrument Electronics, Inc. Copyright © 2004. All rights reserved. 531-9001 2/28/05
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Model 531 Datasheet
Specifications
General Specifications:
(Unless otherwise indicated all specifications are rated from a nominal 23 °C, 70 % RH for 1 year from calibration)
Operating Temperature Range -20 to 60 °C (-5 to 140 °F)
Storage Temperature Range -30 to 60 °C (-22 to 140 °F)
Relative Humidity Range
Size 4.75 X 2.50 X .75 inches (120.65 x 63.5 x 19.05mm)
Weight 7.5 oz (212.6 grams)
Battery 2 AAV Alkaline
Miscellaneous Low battery indication with nominal 1 hour of operation left
Common Specifications for all current modes
Ranges 0.00 to 24.00 mA, -25.0 to 125.0% of 4-20 mA
Accuracy ≤ ± (0.05 % of Reading + 0.01 mA)
Temperature effect ≤ ± 50 ppm/°C of Range
Resolution(s) 00.01 mA and 0.1 %
10 % ≤RH ≤90 % (0 to 35 °C), Non-condensing
10 % ≤RH≤ 70 % (35 to 60 °C), Non-condensing
Over-voltage protection to 120 Vrms (rated for 30 seconds)
Bar graph display with 1% resolution of 4-20 mA signal scale
High contrast graphic liquid crystal display with 0.45” (11.4 mm) high digits
Source/Power and Measure 2-Wire Transmitter Specifications:
Loop compliance voltage ≥ 15 Volts or ≥ 24 Volts
Loop drive capability
Miscellaneous Open loop or out of compliance conditions are indicated by flashing the bar graph
Read mA Specifications:
Voltage burden ≤ 1V at 20 mA
Overload/Current limit protection 25 mA nominal
Battery life Typical ≥ 40 Hours
1200 Ω at 20 mA for entire battery life @24 Volts
600 Ω at 20 mA for entire battery life @15 Volts
Battery life in:
24Volts - Source mode ≥ 10 hrs at 12mA typical (HART® disabled)
Power measure ≥ 10 hrs at 12mA typical
15 Volts - Source mode ≥ 18 hrs at 12mA typical (HART® disabled)
Power measure ≥ 18 hrs at 12mA typical
Practical Instrument Electronics, Inc. Copyright © 2004. All rights reserved. 531-9001 2/28/05
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Model 531 Datasheet
2-Wire Transmitter Simulation Specifications:
Voltage burden ≤ 1V at 20 mA
Overload/Current limit
protection
Loop voltage limits 2-42 VDC
Miscellaneous Open loop or out of compliance conditions are indicated by flashing the bar graph
Available Options:
Option: Part Number:
Carrying Case 020-0200
Other Products Available:
RTD Source (Single Type/1° resolution) Model 510
RTD Source (7 Types, Ω/0.1° resolution)
Pt100: α=1.3850, 1.3902, 1.3916, 1.3926
Cu10: α=1.427
Ni110: α=1.530
Ni120: α=1.672
RTD Calibrator (Source/Read 7 Types, Ω /0.1° resolution) Model 512
RTD Calibrator (Source/Read 8 Types, Ω /0.1° resolution)
With Auto Stepping
T/C Source (Single Type/1° resolution) Model 520
T/C Source (8 Types, mV/0.1° resolution)
B, E, J, K, N, R, S, T, mV
T/C Calibrator (Source/Read 8 Types, mV/0.1° resolution)
B, E, J, K, N, R, S, T, mV
Dual RTD - T/C Source and Read With Auto Stepping Model 525
4-20 Milliamp Loop Calibrator Model 530
4-20 Milliamp Loop Calibrator with Loop Diagnostic Model 532
4-20/10-50 Dual Range Loop Calibrator Model 535
Frequency Read & Source w/totalizer Model 541
25 mA nominal
Battery life ≥ 40 hour typical
Model 511
Model 512S
Model 521
Model 522
Practical Instrument Electronics, Inc. Copyright © 2004. All rights reserved. 531-9001 2/28/05
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Model 531 Datasheet
Warranty
Our equipment is guaranteed against defective material and workmanship (excluding batteries) for a period of three years from the
date of shipment. Claims under guarantee 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
guarantee. 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.
Your Local PIE Representative
Practical Instrument Electronics, Inc. Copyright © 2004. All rights reserved. 531-9001 2/28/05
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