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Practical Instrument Electronics
82 East Main Street Suite 3.14 • Webster, NY 14580 Tel: 585.872.9350 • Fax: 585.872.2638 • [email protected] • www.piecal.com
General
Operating Temperature
Range
-25 to 60 °C (-10 to 140 °F)
Relative Humidity Range
10 % ≤RH ≤90 % (0 to 35 °C), Non-condensing
10 % ≤RH≤ 70 % (35 to 60 °C), Non-condensing
Temperature Drift
± 0.01% of span outside of 23°C ±10 °C (73°C ±18 °F)
Size
5.63 x 3.00 x 1.60 in, 143 x 76 x 41 mm (L x W x H)
Weight
12.1 ounces, 0.34 kg (including boot & batteries)
Batteries
Four “AA” Alkaline 1.5V (LR6)
Battery Life
25 Hours RTD, 8 Hours milliamp
Isolation: Voltage
60V rms between all milliamp functions and Source/Read RTD/Ohms
Normal Mode Rejection
50/60 Hz, 50 dB
Common Mode Rejection
50/60 Hz, 120 dB
Optional NiMh
Rechargeable battery kit
Charger, four NiMh batteries [Part # 020-0103]
Low Battery
Low battery indication with nominal 1 hour of operation left
Protection against
misconnection
Over-voltage protection to 60 V dc (rated for 30 seconds)
Display
High contrast graphic liquid crystal display. LED backlighting for use in low
lit areas.
Read Ohms & RTD
3 Wire & 4 Wire Accuracy
2 Wire Accuracy
±(0.015% of R 0.05 Ohms)
±(0.015% of R 0.15 Ohms)
Resistance Ranges
0.00 to 401.00, 0.0 to 4010.0 Ohms
Excitation Current
0.9 mA to 401 Ohms, 0.4 mA to 4010 Ohms (nominal)
Source Ohms & RTD
3 & 4 Wire Accuracy
From 1 to 10.2 mA
External Excitation Current
Below 1 mA of External
Excitation Current
2 Wire Accuracy
±(0.015% of R 0.05 Ohms)
±(0.015% of Rdg + + 0.05 Ohms)
Add 0.1 Ohms to 3 Wire & 4 Wire Accuracy
Resistance Ranges
0.00 to 401.00, 0.0 to 4010.0 Ohms
Allowable Excitation
Current Range
0 to 400 Ohm: 10.2 mA max; steady or pulsed/intermittent
401 to 4000 Ohms: 1 mA max; steady or pulsed/intermittent
Pulsed Excitation Current
Compatibility
DC to 0.01 second pulse width
0.025 mV
mA Excitation Current
PIE 311Plus Specifications
Unless otherwise indicated all specifications (except Cold Junction) are rated from a nominal 23 °C, 70 % RH for 1 year from calibration