Practical Instrument Electronics 311 - Manual (Page 7)

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
Page 7
General
Accuracy
±(0.015% of Reading + 0.05 Ohms)
Temperature Drift ± 0.01% of span outside of 23°C ±10 °C (73°C ±18 °F)
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
Size 5.63 x 3.00 x 1.60 inches, 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 50 Hours
Optional NiMh Rechargeable battery kit 120 VAC for North America Only; charger, four NiMh
batteries, AC & DC cords [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
Excitation Current
0.5 mA nominal
Normal Mode Rejection 50/60 Hz, 50 dB
Common Mode Rejection 50/60 Hz, 120 dB
PIECAL 311 Specifications
(Unless otherwise indicated all specifications are rated from a nominal 23 °C,
70 % RH for 1 year from calibration)
Source
Accuracy
From 1 to 10.2 mA External Excitation Current
Below 1 mA of External Excitation Current
±(0.015% of Reading + 0.05 Ohms)
±(0.015% of Reading + + 0.05 Ohms)
Resistance Ranges 0.00 to 410.00, 410.1 to 4001.0 Ohms
Allowable Excitation Current Range <410 Ohms: 10.2 mA max; steady or pulsed/intermittent
410 to 4001 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