LI-8150 Multiplexer

Dimensions: 40.6 cm L × 57.2 cm W × 21.1 cm H (16” × 22.5” × 8.3”)

Weatherproof Rating: Tested to IEC IP55 standard

Weight

8 port version: 9.4 kg (20.7 lb)

16 port version: 11.2 kg (24.8 lb)

Operating Range

Temperature: –20 to 45 °C

Humidity: 0 to 95% RH, non-condensing

Coverage Area

Maximum radius from LI-8150 to chambers: 15.0 m (49.2 ft) with one extension tube.

Maximum diameter of measurement circle: 30.0 m (98.4 ft) with one extension tube on each chamber.

Plumbing

Flow rate to/from chambers: ~2-3 lpm

Flow rate between LI-8100A and LI-8150: 1.7 lpm

Pump in the LI-8100A subsamples air stream in the LI-8150

LI-8150 Pump Type: Diaphragm

Display

Four LED Indicators: Power, Check Error Log, Manual Chamber Activation Indicator, Active Chamber Error

Five 7-segment LED Displays: Active Chamber, Active Valve, three voltage channel indicators

Power Requirements: 10.5 – 14.5 VDC (120 VAC and 240 VAC with optional power supply). Power supplied through the LI-8150; the LI-8150 powers the LI-8100A when connected. See Table A‑1 for total system power requirements.

Table A‑1. Total system power requirements in different sampling configurations.
LI-8100A +
LI-8150 +
n Chambers		 Sampling: No chamber movement Sampling: Two chambers move at once Warm-up: Up to four chambers move at once
n Chambers Amps @ 12.5 VDC  Watts Amps @ 12.5 VDC  Watts Amps @ 12.5 VDC  Watts
11 1.0 12.5 3.0 37.5 3.0 37.5
2 2.0 25.0 3.8 47.5 3.8 47.5
4 2.1 26.3 3.8 47.5 4.8 60.0
8 2.1 26.3 3.8 47.5 4.8 60.0
16 2.3 26.8 3.8 47.5 4.8 60.0

8150-770 AC to DC power supply

Power Requirements: 115-120 VAC or 230-240 VAC, 50/60 Hz, 230 W.

Weatherproof Rating: Tested to IEC IP55 standard

Output Voltage: 12 VDC, 4.5 A

Operating Temperature Range: -20 to 50 °C (-4 to 122 °F)

Environmental Operating Conditions: Tested to IP55 for dust and water ingress.

Dimensions: 18.1 cm D × 28 cm L × 10.2 cm T (7.125” × 11” × 4”)

Weight: 31 kg (14.05 lbs.)

2-meter cable and tube

LI-COR part number: 8100-704

Length: 2 m (6.6')

15-meter chamber cable and tube

LI-COR part number: 8150-705

Length: 15 m (49')

Volume: 237 cm3

Long-term chamber: 8100-104

Chamber Volume: 4076.1 cm3

Soil Area Exposed: 317.8 cm2 (49.3 in.2)

Dimensions: 48.3 cm L × 38.1 cm W × 33.0 cm H (19" × 15" × 13")

Weatherproof Rating: Tested to IEC IP55 standard

Air temperature thermistor

Operating Range: –20 to 45 °C

Accuracy: ± 0.2 °C from 0 to 50 °C, ± 0.3 °C from -20 to 0 °C

Weight: 5.9 kg (13 lb.)

Clear long-term chamber: 8100-104C

Chamber Volume (serial numbers 2024 and below): 4076.1 cm3

Chamber Volume (serial numbers 2025 and above): 3876.1 cm3

Soil Area Exposed: 317.8 cm2 (49.3 in.2)

Dimensions: 48.3 cm L × 38.1 cm W × 33.0 cm H (19" × 15" × 13")

Weatherproof Rating: Tested to IEC IP55 standard

Air temperature thermistor

Operating Range: –20 to 45 °C

Accuracy: ± 0.2 °C from 0 to 50 °C, ± 0.3 °C from -20 to 0 °C

Weight: 5.9 kg (13 lb.)

Multiplexer accessories

The following accessories are for use with the LI-8150 Multiplexer for long-term measurements.

ECH2O model EC-5 soil moisture probe

LI-COR part number: 8150-202

Sensor type: Dielectric sensor

Sensor length: 5.5 cm (2.25")

Cable length: 4.6 m (15')

Operating temperature range: -40 to +50 °C

LI-COR soil temperature thermistor

LI-COR part number: 8150-203

Sensor type: Thermistor

Sensor length: 6 cm (2.375")

Cable length: 1.8 m (6')

Operating temperature range: -20 to +50 °C

Delta-T ML2x ThetaProbe soil moisture probe

LI-COR part number: 8150-204

Sensor length: 6 cm (2.375")

Cable length: 2 m (6.6')

Operating temperature range: 0 to +70 °C

GS1 soil moisture sensor

LI-COR part number: 8150-205

Sensor type: Dielectric sensor

Sensor length: 5.2 cm (2")

Cable length: 5 m (16')

Operating temperature range: -40 to +50 °C