Laurel Electronics QLS Quad Output 4-20 mA Current Loop - Datasheet User Manual
Page 2
LAUREL
ELECTRONICS INC., 3183-G Airway Ave., Costa Mesa, CA 92626, USA • Tel 714-434-6131 • www.laurels.com 2
Specifications
Signal Input
Signal Type
Input Resistance
Transmitter Excitation
4-20 mA, 1-5V, 0-5V, 0-10V (jumper selectable)
50 Ω for 4-20 mA, 412 kΩ for 1-5V, 464 kΩ for 0-5V, 935 kΩ for 0-10V
24 Vdc nominal, 30 mA max
Signal Outputs
Number of Outputs
Signal Type
Zero & Span Adjustments
Signal Isolation
Voltage Compliance
Load Regulation
Accuracy
Zero Tempco
Span Tempco
AC Rejection
Response Speed
Loop Current Sense
Loop Continuity Indication
4
4-20 mA
± 10% for each output with 25-turn potentiometers
± 10V active isolation between input and output grounds
12V (600Ω per loop at 20 mA)
± 0.005% of span from 0Ω to 600Ω
± 0.02% max span error at 23°C
± 0.1 µA/°C typical, ± 0.2 µA/°C max
± 10 ppm/°C (0.16 µA/°C) typical, ± 20 ppm/°C (0.32 µA/°C) max
90 dB from DC to 60 Hz
2 ms risetime, 7 ms settling time to 0.1% of final value
10Ω ± 0.5% series resistor to generate 200 mV at 20 mA
Yellow LED lamp per loop, brightness proportional to current
Power Input
Standard Power (QLS-1)
Low Power Option (QLS-2)
Power Frequency
Power Isolation
Power Consumption
Power On Indication
85-264 Vac or 90-300 Vdc (DC operation not ETL approved)
10-48 Vdc or 12-32 Vac
DC or 47-63 Hz
250V AC working, 1.0 kV AC for 60 sec, 1.7 kV DC for 2 sec
3.5 W max, all loops delivering 20 mA
Green LED lamp
Mechanical
Mounting
Dimensions
Weight
Connectors
Wire Size
35 mm DIN Rail per EN50 022
22.5 x 103 x 128 mm (0.9" x 4.1" x 5.0") W x H x D
140 g (5 oz)
Detachable plug-in screw-clamp connectors
28-12 AWG, 2.5 sq. mm max
Environmental
Operating Temperature
Storage Temperature
Relative Humidity
Cooling Required
-40°C to 70°C
-40°C to 85°C
95% at 40°C, non-condensing
Mount units with ventilation holes at top and bottom.
Leave 6 mm (1/4") between units, or force air with a fan.
Ordering Guide
QLS-1 Quad Isolated Output Loop Splitter Retransmitter, 95-264 Vac power
QLS-2 Quad Isolated Output Loop Splitter Retransmitter, 10-48 Vdc or 12-32 Vac power