QA-I

Powered Signal Isolator
  • Features
    • mA signal isolator
    • Passive and active input
    • Passive and active output
    • 20 Ohm input impedance
    • Output can drive into 600 Ohms
    • DIN Rail Mount


Powered Signal Isolator

Powered Signal Isolator Infographic

The QA-I Powered Signal Isolator has been designed to isolate the 4-20 mA signal and also boost the signal to increase the range. The input load impedance is only 20 Ohms. The input, output and power supply are isolated at 1.5 kV.
The input can be active or passive, so the QA-I can power up a transmitter or receive a 4-20 mA from a three or four wire device. The output is also active or passive. The local indication is visible when there is power to the device.

QA-I Specifications

Input 0-20 mA 4-20 mA
Output 0-20 mA 4-20 mA
Power Supply 10 to 40 Vdc 20 to 28 Vac
Current Consumption 2 mA  
Temperature Rating Operative 5°F +149°F - 15°C +65°C Storage Temperature - 40°F +185°F - 40°C +85°C.
Humidity (non condensing) 10-90%
Housing Material self-extinguishing
Dimensions 0.86" x 3.9 " x 4.4" 17.5 x 100 x 112 mm
Weight 3 oz 90 g
EMC Immunity: EN 61000-6-2. Emission: EN 61000-6-4.

QA-I Wiring Connections

Power Supply
Positive Terminal 16
Negative Terminal 17
mA input
Active input Positive Terminal 2
Active input negative Terminal 3
Passive input Positive Terminal 2
Passive input negative Terminal 4
mA Output
Active Output Positive Terminal 29
Active Output Negative Terminal 30
Passive Output Positive Terminal 30
Passive Output Negative Terminal 31
QA-I-wiring-diagram
QEED USA
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