Connecting sensors

Here we describe how to connect sensors and enter calibration information for the basic, standard, and premium sensor packages from LI-COR. Although we show how to connect the Stevens HydraProbes, they must be connected and configured one after the other until each one has a unique address.

Connecting sensor wires for the Basic Package

The basic biomet system supports sensors listed in Table 3‑1.

Wiring table

Table 3‑1. Wiring for the basic biomet system 7900-109. Sensor wires that are not mentioned here are not used and can remain unconnected.
Measurement Description Wire Color Terminal
Soil Heat Flux Plate 1
(Hukseflux HFP01)		 Signal + White A1
Signal - Green A2
Shield Black G1
Soil Heat Flux Plate 2
(Hukseflux HFP01)		 Signal + White A3
Signal - Green A4
Shield Black G2
Soil Heat Flux Plate 3
(Hukseflux HFP01)		 Signal + White A5
Signal - Green A6
Shield Black G3
Soil Moisture Probe 1
(METER or Decagon EC-5)		 Signal + Orange or Red A7
Ground Bare G4
Power Brown or White A15EXC
Soil Moisture Probe 2
(METER or Decagon EC-5)		 Signal + Orange or Red A8
Ground Bare G4
Power Brown or White A16EXC
Air Temperature and Relative Humidity
(Vaisala HMP155)		 Temp. Signal White A9
RH Signal Yellow A10
Shield Black G5
Signal Ground Green G5
Power Ground Red GND
Power Blue 12V
Net Radiation
(NR Lite2)		 Signal + Red A11
Signal - Blue G6
Shield Black G6
Soil Temperature Probe 1
(LI-COR 7900-180)		 Signal + Red A12
Ground Black G6
Power + Orange A15
Soil Temperature Probe 2
(LI-COR 7900-180)		 Signal + Red A13
Ground Black G7
Power + Orange A16
Soil Temperature Probe 3
(LI-COR 7900-180)		 Signal + Red A14
Ground Black G7
Power + Orange A16
PPFD
(LI-COR LI-190R)		 Cathode Blue G9
Anode Brown A18
Shield Bare G9
Global Radiation
(LI-COR LI-200R)		 Cathode Blue G8
Anode Brown A17
Shield Bare G8
Liquid Precipitation
(Texas Electronics TR-5252M)		 Switch Red C1
Switch Black GND

Wiring diagram

Sensor wiring for the basic biomet system (7900-109).

Connecting sensor wires for the Standard Package

The basic biomet package supports sensors listed in Table 3‑2.

Wiring table

Table 3‑2. Wiring for the standard biomet package 7900-118. Sensor wires that are not mentioned here are not used and can remain unconnected.
Measurement Description Wire Color Terminal
Soil Heat Flux Plate 1
(Hukseflux HFP01)		 Signal + White A1
Signal - Green A2
Shield Black G1
Soil Heat Flux Plate 2
(Hukseflux HFP01)		 Signal + White A3
Signal - Green A4
Shield Black G2
Soil Heat Flux Plate 3
(Hukseflux HFP01)		 Signal + White A5
Signal - Green A6
Shield Black G3
Net Radiation
Cable 1
(Hukseflux NR01-T2)		 Upper Pyranometer + Red A7
Upper Pyranometer - Blue A8
Ground Black G4
Lower Pyranometer + White A9
Lower Pyranometer - Green A10
Upper Pyrgeometer + Brown A11
Upper Pyrgeometer - Yellow A12
Lower Pyrgeometer + Pink A13
Lower Pyrgeometer - Gray A14
Net Radiation Temperature
Cable 2
(Hukseflux NR01)		 Ground Black G6
Thermistor + Red A15
Thermistor + White A15
Thermistor - Blue G7
Thermistor - Green G7
Heater Ground Yellow GND
Heater Power Brown SW1
Not Connected Pink and Gray Not Used
Air Temperature and Relative Humidity
(Vaisala HMP155)		 Temperature Signal White A16
RH Signal Yellow A17
Shield Black G8
Signal Ground Green G8
Power Ground Red GND
Power Blue 12V
PPFD
(LI-COR LI-190R)		 Cathode Blue G9
Anode Brown A18
Shield Bare G9
Liquid Precipitation (Texas Electronics TR-5252M) Switch Red C1
Switch Black GND
Soil Moisture and Temperature
(Stevens HydraProbe)		 Data Blue DIN Terminal 8
Ground Black DIN Terminal 9
Power Red DIN Terminal 10

Wiring diagram

Sensor wiring for the standard biomet package (7900-118).

Connecting sensor wires for the Premium Package

The premium biomet package supports sensors listed in Table 3‑3.

Wiring table

Table 3‑3. Wiring for the premium biomet system 7900-119. Sensor wires that are not mentioned here are not used and can remain unconnected.
Measurement Description Color Terminal
Soil Heat Flux Plate 1
(Hukseflux HFP01)		 Signal + White A1 (DAqM 1)
Signal - Green A2 (DAqM 1)
Shield Black G1 (DAqM 1)
Soil Heat Flux 1 Calibration
(Hukseflux HFP01SC)		 Heater + Brown SW1 (DAqM 1)
Heater - Green GND (DAqM 1)
Shield Black GND (DAqM 1)
Soil Heat Flux Plate 2
(Hukseflux HFP01)		 Signal + White A3 (DAqM 1)
Signal - Green A4 (DAqM 1)
Shield Black G2 (DAqM 1)
Soil Heat Flux 2 Calibration
(Hukseflux HFP01SC)		 Heater + Brown SW2 (DAqM 1)
Heater - Green GND (DAqM 1)
Shield Black GND (DAqM 1)
Soil Heat Flux Plate 3
(Hukseflux HFP01)		 Signal + White A5 (DAqM 1)
Signal - Green A6 (DAqM 1)
Shield Black G3 (DAqM 1)
Soil Heat Flux 3 Calibration
(Hukseflux HFP01SC)		 Heater + Brown SW3 (DAqM 1)
Heater - Green GND (DAqM 1)
Shield Black GND (DAqM 1)
Net Radiometer
(Kipp & Zonen CNR4)		 Upper Pyranometer + Red A7 (DAqM 1)
Upper Pyranometer - Blue A8 (DAqM 1)
Lower Pyranometer + White A9 (DAqM 1)
Lower Pyranometer - Black A10 (DAqM 1)
Upper Pyrgeometer + Gray A11 (DAqM 1)
Upper Pyrgeometer - Yellow A12 (DAqM 1)
Shield Bare/Black G6 (DAqM 1)
Lower Pyrgeometer + Brown A13 (DAqM 1)
Lower Pyrgeometer - Green A14 (DAqM 1)
Net Radiometer Temperature
(Kipp & Zonen CNR4)		 Shield Bare/Black G7 (DAqM 1)
Thermistor - Black G7 (DAqM 1)
Thermistor + White A15 (DAqM 1)
PPFD
(LI-COR LI-190R)		 Cathode Blue G9 (DAqM 1)
Anode Brown A18 (DAqM 1)
Shield Bare G9 (DAqM 1)
Soil Moisture and Temperature
(Stevens HydraProbe)		 Signal Blue DIN Terminal 8
Ground Black DIN Terminal 9
Power Red DIN Terminal 10
Liquid Precipitation
(Texas Electronics TR-525M)		 Switch Red C1 (DAqM 1)
Switch Black GND (DAqM 1)
Air Temperature and Relative Humidity
(Vaisala HMP155)		 Temperature Signal White A16 (DAqM 1)
RH Signal Yellow A17 (DAqM 1)
Shield Black G8 (DAqM 1)
Signal Ground Green G8 (DAqM 1)
Power Ground Red GND (DAqM 1)
Power Blue 12V (DAqM 1)
Net Radiometer Heater and Ventilator
(Kipp & Zonen CNF4)		 Heater (-) Blue GND (DAqM 2)
Heater (+) Black SW1 (DAqM 2)
Heater (+) White SW1 (DAqM 2)
Heater (-) Red GND (DAqM 2)
Ventilator (+) Yellow SW2 (DAqM 2)
Ventilator (-) Brown GND (DAqM 2)
Shield Bare/Black GND (DAqM 2)
Tacho (not used) Gray/Green Not Used
Soil Temperature Probe 1
(LI-COR 7900-180)		 Signal + Red A13 (DAqM 2)
Ground Black G6 (DAqM 2)
Power + Orange A15 (DAqM 2)
Soil Temperature Probe 2
(LI-COR 7900-180)		 Signal + Red A14 (DAqM 2)
Ground Black G7 (DAqM 2)
Power + Orange A15 (DAqM 2)
Soil Temperature Probe 3
(LI-COR 7900-180)		 Signal + Red A16 (DAqM 2)
Ground Black G8 (DAqM 2)
Power + Orange A15 (DAqM 2)

Wiring diagram

Sensor wiring for the premium biomet package (7900-119).