Practical Instrument Electronics 322-1 - Manual (Page 7)

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
General
Accuracy
±(0.008% of Reading + 0.006 mV)
Cold Junction Compensation ± 0.09°F (±0.05 °C) - Thermistor traceable to NIST for 11 years
Millivolt Range -13.000 to 80.000 mV
Operating Temperature Range -25 to 60 °C (-10 to 140 °F)
Temperature Effect ≤ ±50 ppm/°C; Cold Junction Sensor ≤ ±25 ppm/°C
Relative Humidity Range 10 % ≤RH ≤90 % (0 to 35 °C), Non-condensing
10 % ≤RH≤ 70 % (35 to 60 °C), Non-condensing
Size L=5.63 x W=3.00 x H=1.60 inches
Weight 12.1 ounces (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 life 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
Input Impedance
> 10 Megohms
Open Thermocouple
Threshold
Pulse
10,000 Ohms nominal
< 10 microamp pulse for 300 milliseconds
Normal Mode Rejection 50/60 Hz, 50 dB
Common Mode Rejection 50/60 Hz, 120 dB
PIECAL 322 Specifications
Unless otherwise indicated all specifications (except Cold Junction) are rated from a nominal 23 °C, 70 % RH for 1 year from calibration
Source
Output Impedance
< 0.3 Ohms
Source Current > 20 mA (drives 80 mV into 10 Ohms)
Noise ≤ 4 microvolts p-p for frequencies of 10 Hz or below