PIE voltage calibrator from the United States

NegotiableUpdate on 05/09

Model

Nature of the Manufacturer: Producers

Product Category

Place of Origin

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Overview

Practical Instrument Electronics (PIE) Model 535 is a dual range loop calibrator that supports two current ranges of 4-20 mA and 10-50 mA, and has both voltage source and voltage measurement functions. This device integrates two range calibrators into a portable device, which can complete range switching within seconds. The main application scenarios of PIE 535 include process loop testing, troubleshooting, two-wire transmitter simulation and power supply, voltage signal calibration, etc.

Product Details

Product Overview

Main functional features

Milliampere circuit function (dual range of 4-20mA and 10-50mA)

PIE 535 supports two independent milliampere circuit operating modes:

4-20 mA loop functionCan source/read 0.000-24000 mA, simulate a two-wire transmitter, supply power to the two-wire transmitter and measure current, display in mA or 4-20 mA with a percentage of -25.00% -125.00%.
10-50 mA loop functionCan source/read 0.000-50.00 mA, simulate a two-wire transmitter, supply power to the two-wire transmitter and measure current, display in mA or 10-50 mA with a percentage of -25.00% -105.00%.
Loop driving capabilityFeedback voltage ≥ 43 V; capable of driving 1200 Ω load in 4-20 mA range and 800 Ω load in 10-50 mA range, and maintaining this capability throughout the battery life cycle.

Voltage function

Voltage reading0.00-30.00 VDC (with 4x over range capability), resolution of 0.01 VDC, input resistance ≥ 1 M Ω.
voltage source：0.000–24.000 VDC， Output resistance ≤ 0.3 Ω, source current capability ≥ 20.000 mA.

High precision performance

PIE 535 provides the following accuracy indicators in all milliampere modes:

parameter	indicator
Accuracy (milliampere mode)	≤± (0.025% reading+0.004 mA)
Temperature coefficient (milliampere mode)	≤ ± 50 ppm/°C of range
Resolution (milliampere mode)	0.001 mA or 0.01%
Accuracy (voltage reading)	≤± (0.1% reading ± 0.1 V)
Accuracy (voltage source)	≤± (0.025% reading+0.004 V), temperature coefficient ≤± 50 ppm/° C of range

The above specifications are based on environmental conditions of 23 ° C and 70% RH, and are valid for one year from the date of calibration.

Interaction and operational characteristics

EZ‑Dial ™ knobPressing the knob can switch the speed step size for output adjustment, making it easy to adjust the output value. The resolution is 0.001 mA (0.01%) or 0.100 mA (1.00%).
EZ‑Check ™ Switch and EZ Step ™ buttonThree tactile switches and buttons can be used in conjunction to retrieve pre stored calibration points from the user, or to output step by step according to the user's set step size.
Automatic stepping and automatic slope modesSupport hands-free automatic step and ramp functions, with independent settings for step time and soaking time (step time: 5-900 seconds, soaking time: 0-900 seconds), and optional step sizes of 2-16 levels.
5-digit high contrast displaySupports dual unit display of mA and%, and is equipped with a bar chart that can be clearly read under various lighting and viewing angles. The resolution of the bar chart is 1% of the measurement range.

Analog output options (optional model 535A)

The optional model 535A has a banana jack on the bottom panel of the device, providing a proportional analog output of 10 mV/mA with an accuracy of ± (0.1%+0.04 mV) and a temperature coefficient of 5 ppm/° C. It can be used to connect chart recorders or data recorders.

Power supply and battery life

Use4 AA alkaline batteriesPower supply, equipped with a 120 VAC 50/60 Hz AC adapter.
Source modeThe battery life is about 10 hours.
reading modesBattery life ≥ 40 hours.
Under a load of 12 mA (100 Ω), the source mode is ≥ 18 hours and the power measurement mode is ≥ 10 hours.
Low battery warning function, which can still maintain an operating margin of about 1 hour after the warning.

Other designs and reliability

Non fuse overvoltage protectionCan tolerate 240 Vrms misconnection (rated for 15 seconds) or 120 Vrms (rated for 30 seconds), which helps reduce downtime maintenance costs caused by accidental misconnection.
Portable and LightweightWeighing approximately 397 grams (14.0 ounces), equipped with a Velcro strap for easy grip or fixation on pipes and ladders.
Convenient battery compartment replacement designBattery replacement does not require tools.
The instrument size is 7.00 x 3.30 x 2.21 inches (177.8 x 83.8 x 56.1 mm).

Summary of Technical Specifications

parameter	Detailed information
Milliampere range	0.000-24000 mA (4-20 mA mode)/0.000-52.000 mA (10-50 mA mode)
Milliampere precision	≤± (0.025% reading+0.004 mA)
Milliampere resolution	0.001 mA / 0.01%
Voltage reading range	0.00-30.00 VDC (4 times over range)
Voltage reading accuracy	≤± (0.1% reading ± 0.1 V)
Voltage source range	0.000–24.000 VDC
Voltage source accuracy	≤± (0.025% reading+0.004 V)
Temperature coefficient (milliampere)	≤± 50 ppm/°C of range
Loop driving capability	4‑20 mA：1200 Ω / 10‑50 mA：800 Ω
Feedback voltage	≥43 V
display	5-digit LCD, high contrast, with bar chart
battery	4 AA alkaline batteries (with 120 VAC adapter)
battery life	Source mode ≥ 10 hours/Reading mode ≥ 40 hours
Operating Temperature	-20 to 60 ° C (-5 to 140 ° F)
Storage temperature	-30 to 60 ° C (-22 to 140 ° F)
relative humidity	10% -90% RH (0-35 ° C, no condensation)/10% -70% RH (35-60 ° C, no condensation)
size	177.8 × 83.8 × 56.1 mm
weight	About 397 g
safety protection	240 Vrms no fuse overvoltage protection
Attachment	Calibration certificate (NIST traceable), portable bag, 60 Hz AC adapter, test leads, rubber protective cover