PIE Practical Instrument Electronics 311, 311 Plus Data sheet

Practical Instrument Electronics

82 E. Main Street Suite 3.14 • Webster, NY 14580 Tel: [phone] • Fax: [phone] • [e-mail] • www.piecal.com

Automated Universal RTD Calibrator

• Easy to use

With the PIECAL 311 you can check & calibrate all your RTD
instruments and measure RTD Sensors. Automatic indication of
connections on the display for simple hookups.

• Take it into the shop, plant or field

Carry it without worry - it comes protected with a rubber boot and
rugged, low profile switch. Easy to operate even in the dark areas
of the plant with the backlit display.

• Calibrate directly in temperature (°C & °F)

Stop carrying around a decade box and RTD resistance tables. The
PIECAL 311 works with the RTDs you use including Platinum 100
(alpha = 3850, 3902, 3926) & 1000 (alpha = 3850, 3750) Ohm,
Copper 10 & 50 Ohm, and Nickel 120 Ohm. Easily set any value
quickly to within 0.1° with the adjustable digital potentiometer
“DIAL” plus store any three temperatures for instant recall with the
EZ-CHECK™ switch. Or use like a decade box from 0.00 to 410.00
and from 0.0 to 4001.0 Ohms.

PIECAL 311

•

Fast calibration with automatic output stepping

Choose between 2, 3, 5, 11 and 21 steps to automatically increment
the output in 100%, 50%, 25%, 10% or 5% of span. Select the step
time to match your system from 5, 6, 7, 8, 9, 10, 15, 20, 25, 30 and
60 seconds.

• Compatible with ALL process instruments

No competitor’s calibrator is compatible with as many process
instruments! Connect directly to the RTD inputs of smart transmitters,
PLCs, DCS and multichannel recorders and verify their outputs or
displays. Works with older instruments with fixed excitation currents
and newer multichannel instruments that switch the excitation current
between input channels.

Actual Size

• Measure RTD sensors

Trouble shoot sensor connections and find broken wires with patented technology. Connect your two, three or four
wire RTDs and the PIECAL 311 automatically detects the connections and measures the RTD in degrees C or F.
Secondary display shows the resistance value corresponding to the RTD temperature.

• Evolutionary design

PIECAL 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 PIECAL 311 improves upon other brands by including a rubber
boot, tilt stand, backlit display with larger digits, rugged switches and a battery compartment for fast battery
changes.

* PIECAL Calibrators are not manufactured or distributed by Fluke
Corp or Altek Industries Inc, manufacturers of Altek Calibrators.

Practical Instrument Electronics

82 Est Main Street Suite 3.14 Webster, NY 14580

Tel: [phone] • Fax: [phone]

[e-mail] • www.piecal.com

Copyright © 2015 All rights reserved 311-9001 - Rev E 8 December 2015

PIECAL 311 Specifications

(Unless otherwise indicated all specifications are rated from a nominal 23°C, 70% RH for 1 year from calibration)

General

Accuracy ±(0.015% of Reading + 0.05 Ohms)

Temperature Drift

Operating Temperature
Range

Relative Humidity Range 10 % ≤RH ≤90 % (0 to 35 °C), Non-condensing

Size

Weight 12.1 ounces, 0.34 kg (including boot & batteries)

Batteries Four “AA” Alkaline 1.5V (LR6)

Battery Life 50 Hours

Optional NiMh
Rechargeable battery kit

Low Battery Low battery indication with nominal 1 hour of

Protection against

misconnection

Display High contrast graphic liquid crystal display. LED

± 0.01% of span outside of 23°C ±10 °C (73°C ±18 °F)

-25 to 60 °C (-10 to 140 °F)

10 % ≤RH≤ 70 % (35 to 60 °C), Non-condensing

5.63 x 3.00 x 1.60 in, 143 x 76 x 41 mm (L x W x H)

120 VAC for North America Only; charger, four
NiMh batteries, AC & DC cords [Part # 020-0103]

operation left

Over-voltage protection to 60 V dc (rated for 30

seconds)

backlighting for use in low lit areas.

Ranges & Accuracies

RTD

Type

Pt 100 Ohm

DIN/IEC/JIS 1989

Based on ITS-90

Pt 100 Ohm

(Burns)

Pt 100 Ohm

(Old JIS 1981)

Pt 100 Ohm

(US Lab)

Pt 1000 Ohm

DIN/IEC/JIS 1989

Pt 1000 Ohm
Hy-Cal HVAC

Copper 10 Ohm

(Minco)

Copper 50 Ohm

Ni 120 Ohm

(Pure)

Alpha Degrees C

Range

1.3850

(0.00385)

1.3902

(0.003902)

1.3916

(0.003916)

1.3926

(0.003926)

1.3850

(0.00385)

1.3750

(0.00375)

1.4274

(0.004274)

1.4280

(0.00428)

1.6720

(0.00672)

-200.0 to -150.0

-150.0 to 360.0

360.0 to 740.0

740.0 to 850.0

-195.6 to -100.0

-100.0 to 370.0

370.0 to 648.9

-200.0 to -140.0

-140.0 to 130.0

130.0 to 370.0

370.0 to 648.9

-200.0 to -140.0

-140.0 to 130.0

130.0 to 380.0

380.0 to 610.0

610.0 to 850.0

-200.0 to 170.0

170.0 to 470.0

470.0 to 730.0

730.0 to 850.0

-200.0 to 200.0

200.0 to 600.0

600.0 to 850.0

-200.0 to -150.0

-150.0 to 260.0

-50.0 to 150.0

-80.0 to 260.0

°C

±0.1°
±0.2°
±0.3°
±0.4°
±0.1°
±0.2°
±0.3°
±0.1°
±0.2°
±0.2°
±0.3°
±0.1°
±0.2°
±0.2°
±0.3°
±0.4°
±0.1°
±0.2°
±0.2°
±0.3°

±0.2°
±0.3°
±0.4°

±1.2°
±1.4°

±0.3°

±0.1°

Degrees F

Range

-328.0 to -238.0

-238.0 to 660.0

660.0 to 1364.0

1364.0 to 1562.0

-320.1 to -148.0

-148.0 to 698.0

698.0 to 1200.0

-328.0 to -220.0

-220.0 to 266.0

266.0 to 698.0

698.0 to 1200.0

-328.0 to -220.0

-220.0 to 266.0

266.0 to 716.0

716.0 to 1130.0

1130.0 to 1562.0

-328.0 to 338.0

338.0 to 878.0

878.0 to 1346.0

1346.0 to 1562.0

-328.0 to 392.0

392.0 to 1112.0

1112.0 to 1562.0

-328.0 to -238.0

-238.0 to 500.0

-58.0 to 302.0

-112.0 to 500.0

°F

±0.2°
±0.4°
±0.6°
±0.7°
±0.3°
±0.4°
±0.6°
±0.2°
±0.3°
±0.4°
±0.5°
±0.2°
±0.3°
±0.4°
±0.5°
±0.7°
±0.2°
±0.4°
±0.4°
±0.5°

±0.4°
±0.6°
±0.7°

±2.2°
±2.4°

±0.5°

±0.2°

Read

Excitation Current

Normal Mode Rejection 50/60 Hz, 50 dB

Common Mode Rejection 50/60 Hz, 120 dB

Source

3 & 4 Wire Accuracy

From 1 to 10.2 mA

External Excitation Current

Below 1 mA of External
Excitation Current

2 Wire Accuracy

Resistance Ranges 0.00 to 401.00, 0.0 to 4010.0 Ohms

Allowable Excitation

Current Range

Pulsed Excitation
Current Compatibility

0.9 mA to 401 Ohms, 0.4 mA to 4010 Ohms (nominal)

±(0.015% of Reading + 0.05 Ohms)

±(0.015% of Rdg + + 0.05 Ohms)

Add 0.1 Ohms to 3 Wire & 4 Wire Accuracy

400 Ohm Range:10.2 mA max; steady or pulsed/intermittent
4000 Ohms Range: 1 mA max; steady or pulsed/intermittent

DC to 0.01 second pulse width

0.025 mV

mA Excitation Current

Additional Information

PIE Calibrators are manufactured in the USA.
calibrated on equipment traceable to NIST and includes a Certificate of
Calibration. 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

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.

Accessories

Included:

Red Rubber Boot, Four “AA” Alkaline batteries, Certificate of Calibration
Deluxe Hands Free Carrying Case Part No. 020-0211
Evolution RTD Wire Kit Part No. 020-0208

2 Red & 2 Black Leads with Banana Plugs & Spade Lugs

Optional:

Ni-MH 1 Hour Charger with 4 Ni-MH AA Batteries Part No. 020-0103
(100-120 V AC input for North America Only)

Available From: