Apogee Wiring Guide

Some of the wire colors for connecting our bare-lead sensors to data loggers changed in March, 2018. Please check your sensor serial number and/or if it has one of our new in-line, cable connectors 30 cm from the sensor head, and then review the serial number ranges below to ensure proper sensor connection. If your sensor is not listed, please check the owner’s manual at apogeeinstruments.com or contact tech support at techsupport@apogeeinstruments.com.

 


Pyranometers

Model

Serial #

Black

Red

White

Green

Yellow

Blue

Clear

SP-110

Serial # 0-60050

Negative (signal from sensor)

Positive (signal from sensor)

 

 

 

 

Shield/Ground

Serial # 60051 and above or if sensor has a connector

Negative (signal from sensor)

 

Positive (signal from sensor)

 

 

 

Shield/Ground

SP-212

Serial # 0-9897

 

 

Input Power

Positive (signal from sensor)

 

 

Ground (from sensor signal and output power)

Serial # 9898 and above or if sensor has a connector

Ground

Input Power (3.3-24 V DC)

Amplified signal output

 

 

 

Shield/Ground

SP-214

Serial # 0-9897

Input ground

Input power

4-20 mA signal output

Signal ground

 

 

Shield/Ground

Serial # 9898 and above or if sensor has a connector

Ground

Input power (7-24 V DC)

4-20 mA signal output

 

 

 

Shield/Ground

SP-215

Serial # 0-9897

 

 

Input power

Positive (signal from sensor)

 

 

Ground (from sensor signal and input power)

Serial # 9898 and above or if sensor has a connector

Ground

Input power (5.5-24 V DC)

Amplified signal output

 

 

 

Shield/Ground

SP-230

Serial # 0-9897

Low side of differential channel (negative lead for sensor)

High side of differential channel (positive lead for sensor)

12 V DC (positive lead for heater)

Ground (negative lead for heater)

 

 

Analog ground (shield wire)

Serial # 9898 and above or if sensor has a connector

Negative (signal from sensor)

 

Positive (signal from sensor)

 

12 V DC (positive lead for heater)

Ground (negative lead for heater)

Shield/Ground

SP-421

Serial # 0-1173

SDI-12 Data Line

Input Power (4.5-24 V DC)

 

 

 

 

Ground (shield wire)

Serial # 1174 and above or if sensor has a connector

Ground

Input Power (5.5-24 V DC)

SDI-12 Data Line

 

 

 

Shield/Ground

SP-510

Serial # 0-1269

Negative (signal from sensor)

Positive (signal from sensor)

12 V DC (positive lead for heater)

Ground (negative lead for heater)

 

 

Shield/Ground

Serial # 1270 and above or if sensor has a connector

Negative (signal from sensor)

 

Positive (signal from sensor)

 

12 V DC (positive lead for heater)

Ground (negative lead for heater)

Shield/Ground

SP-610

Serial # 0-1093

Negative (signal from sensor)

Positive (signal from sensor)

12 V DC (positive lead for heater)

Ground (negative lead for heater)

 

 

Shield/Ground

Serial # 1094 and above or if sensor has a connector

Negative (signal from sensor)

 

Positive (signal from sensor)

 

12 V DC (positive lead for heater)

Ground (negative lead for heater)

Shield/Ground

SP-422

Serial # 0-1173

 

 

 

 

 

 

 

Serial # 1174 and above or if sensor has a connector

Ground

Input Power (5.5-24 V DC)

RS232 Tx or RS485 +

Select – RS485/RS232

 

RS232 Rx or RS485

Shield/Ground

 

 


Infrared Radiometers

Model

Serial #

Black

Red

White

Green

Blue

Clear

SI-111

Serial # 0-7282

Low side of differential channel (negative thermopile lead)

High side of differential channel (positive thermopile lead)

Excitation channel (excitation for thermistor)

Single-ended channel (positive thermistor lead)

Analog ground (negative thermistor lead)

Analog ground (thermopile ground)

Serial # 7283 and above or if sensor has a connector

Low side of differential channel (negative thermopile lead)

Excitation channel (excitation for thermistor)

High side of differential channel (positive thermopile lead)

Single-ended channel (positive thermistor lead)

Analog ground (negative thermistor lead)

Shield/Ground

SI-121

Serial # 0-7282

Low side of differential channel (negative thermopile lead)

High side of differential channel (positive thermopile lead)

Excitation channel (excitation for thermistor)

Single-ended channel (positive thermistor lead)

Analog ground (negative thermistor lead)

Analog ground (thermopile ground)

Serial # 7283 and above or if sensor has a connector

Low side of differential channel (negative thermopile lead)

Excitation channel (excitation for thermistor)

High side of differential channel (positive thermopile lead)

Single-ended channel (positive thermistor lead)

Analog ground (negative thermistor lead)

Shield/Ground

SI-131

Serial # 0-7282

Low side of differential channel (negative thermopile lead)

High side of differential channel (positive thermopile lead)

Excitation channel (excitation for thermistor)

Single-ended channel (positive thermistor lead)

Analog ground (negative thermistor lead)

Analog ground (thermopile ground)

Serial # 7283 and above or if sensor has a connector

Low side of differential channel (negative thermopile lead)

Excitation channel (excitation for thermistor)

High side of differential channel (positive thermopile lead)

Single-ended channel (positive thermistor lead)

Analog ground (negative thermistor lead)

Shield/Ground

SI-1H1

Serial # 0-7282

Low side of differential channel (negative thermopile lead)

High side of differential channel (positive thermopile lead)

Excitation channel (excitation for thermistor)

Single-ended channel (positive thermistor lead)

Analog ground (negative thermistor lead)

Analog ground (thermopile ground)

Serial # 7283 and above or if sensor has a connector

Low side of differential channel (negative thermopile lead)

Excitation channel (excitation for thermistor)

High side of differential channel (positive thermopile lead)

Single-ended channel (positive thermistor lead)

Analog ground (negative thermistor lead)

Shield/Ground

SIF-111

Serial # 0-1056

Low side of differential channel (negative thermopile lead)

High side of differential (positive thermopile lead)

Excitation channel (excitation for thermistor)

Single-ended channel (positive thermistor lead)

Analog ground (negative thermistor lead)

Analog ground (thermopile ground)

Serial # 1057 and above or if sensor has a connector

Low side of differential channel (negative thermopile lead)

Excitation channel (excitation for thermistor)

High side of differential channel (positive thermopile lead)

Single-ended channel (positive thermistor lead)

Analog ground (negative thermistor lead)

Shield/Ground

SIF-121

Serial # 0-1056

Low side of differential channel (negative thermopile lead)

High side of differential (positive thermopile lead)

Excitation channel (excitation for thermistor)

Single-ended channel (positive thermistor lead)

Analog ground (negative thermistor lead)

Analog ground (thermopile ground)

Serial # 1057 and above or if sensor has a connector

Low side of differential channel (negative thermopile lead)

Excitation channel (excitation for thermistor)

High side of differential channel (positive thermopile lead)

Single-ended channel (positive thermistor lead)

Analog ground (negative thermistor lead)

Shield/Ground

SIF-1H1

Serial # 0-1056

Low side of differential channel (negative thermopile lead)

High side of differential (positive thermopile lead)

Excitation channel (excitation for thermistor)

Single-ended channel (positive thermistor lead)

Analog ground (negative thermistor lead)

Analog ground (thermopile ground)

Serial # 1057 and above or if sensor has a connector

Low side of differential channel (negative thermopile lead)

Excitation channel (excitation for thermistor)

High side of differential channel (positive thermopile lead)

Single-ended channel (positive thermistor lead)

Analog ground (negative thermistor lead)

Shield/Ground

SI-411

Serial # 0-3056

SDI-12 Data Line

Input Power (4.5-24 V DC)

 

 

 

Ground (shield wire)

Serial # 3057 and above or if sensor has a connector

Ground

Input Power (5.5-24 V DC)

SDI-12 Data Line

 

 

Shield/Ground

SI-421

Serial # 0-3056

SDI-12 Data Line

Input Power (4.5-24 V DC)

 

 

 

Ground (shield wire)

Serial # 3057 and above or if sensor has a connector

Ground

Input Power (5.5-24 V DC)

SDI-12 Data Line

 

 

Shield/Ground

SI-431

Serial # 0-3056

SDI-12 Data Line

Input Power (4.5-24 V DC)

 

 

 

Ground (shield wire)

Serial # 3057 and above or if sensor has a connector

Ground

Input Power (5.5-24 V DC)

SDI-12 Data Line

 

 

Shield/Ground

SI-4H1

Serial # 0-3056

SDI-12 Data Line

Input Power (4.5-24 V DC)

 

 

 

Ground (shield wire)

Serial # 3057 and above or if sensor has a connector

Ground

Input Power (5.5-24 V DC)

SDI-12 Data Line

 

 

Shield/Ground

 

 


Oxygen Sensors

Model

Serial #

Black

Red

White

Green

Yellow

Blue

Clear

SO-110

Serial # 0-4606

Low side of differential channel (negative lead for O₂ sensor)

High side of differential channel (positive lead for O₂ sensor)

Excitation channel (excitation for thermistor)

Single-ended channel (positive lead for thermistor)

12 V port (positive lead for heater)

Ground (negative lead for thermistor and heater)

Analog ground (shield wire)

 

Serial # 4607 and above or if sensor has a connector

Low side of differential channel (negative lead for O₂ sensor)

Excitation channel (excitation for thermistor)

High side of differential channel (positive lead for O₂ sensor)

Single-ended channel (positive lead for thermistor)

12 V DC (positive lead for heater)

Ground (negative lead for thermistor and heater)

Shield/Ground

SO-120

For separate thermo-couple wiring see manual

Serial # 0-4606

Low side of differential channel (negative lead for O₂ sensor)

High side of differential channel (positive lead for O₂ sensor)

12 V DC (positive lead for heater)

Ground (negative lead for heater)

 

 

Analog ground (shield wire)

 

Serial # 4607 and above or if sensor has a connector

Low side of differential channel (negative lead for O₂ sensor)

 

High side of differential channel (positive lead for O₂ sensor)

 

12 V DC (positive lead for heater)

Ground (negative lead for heater)

Shield/Ground

SO-210

Serial # 0-4606

Low side of differential channel (negative lead for O₂ sensor)

High side of differential channel (positive lead for O₂ sensor)

Excitation channel (excitation for thermistor)

Single-ended channel (positive lead for thermistor)

12 V port (positive lead for heater)

Ground (negative lead for thermistor and heater)

Analog ground (shield wire)

 

Serial # 4607 and above or if sensor has a connector

Low side of differential channel (negative lead for O₂ sensor)

Excitation channel (excitation for thermistor)

High side of differential channel (positive lead for O₂ sensor)

Single-ended channel (positive lead for thermistor)

12 V DC (positive lead for heater)

Ground (negative lead for thermistor and heater)

Shield/Ground

SO-220

For separate thermo-couple wiring see manual

Serial # 0-4606

Low side of differential channel (negative lead for O₂ sensor)

High side of differential channel (positive lead for O₂ sensor)

12 V DC (positive lead for heater)

Ground (negative lead for heater)

 

 

Analog ground (shield wire)

 

Serial # 4607 and above or if sensor has a connector

Low side of differential channel (negative lead for O₂ sensor)

 

High side of differential channel (positive lead for O₂ sensor)

 

12 V DC (positive lead for heater)

Ground (negative lead for heater)

Shield/Ground

SO-411

Serial # 0-1144

SDI-12 Data Line

Input Power (4.5-24 V DC)

Positive Heater Power

Negative Heater Power

 

 

Ground (shield wire)

Serial # 1145 and above or if sensor has a connector

Ground

Input Power (5.5-24 V DC)

SDI-12 Data Line

 

12 V DC (positive lead for heater)

Ground (negative lead for heater)

Shield/Ground

SO-421

Serial # 0-1144

SDI-12 Data Line

Input Power (4.5-24 V DC)

Positive Heater Power

Negative Heater Power

 

 

Ground (shield wire)

Serial # 1145 and above or if sensor has a connector

Ground

Input Power (5.5-24 V DC)

SDI-12 Data Line

 

12 V DC (positive lead for heater)

Ground (negative lead for heater)

Shield/Ground

 

 


Quantum Sensors

Model

Serial #

Black

Red

White

Green

Blue

Clear

SQ-110

Serial # 0-25369

Negative (signal from sensor)

Positive (signal from sensor)

 

 

 

Shield/Ground

Serial # 25370 and above or if sensor has a connector

Negative (signal from sensor)

 

Positive (signal from sensor)

 

 

Shield/Ground

SQ-120

Serial # 0-25369

Negative (signal from sensor)

Positive (signal from sensor)

 

 

 

Shield/Ground

Serial # 25370 and above or if sensor has a connector

Negative (signal from sensor)

 

Positive (signal from sensor)

 

 

Shield/Ground

SQ-212

Serial #0-7597

 

 

Input power

Positive (signal from sensor)

 

Ground (for sensor signal and input power)

Serial # 7598 and above or if sensor has a connector

Ground

Input power (3.3-24 V DC)

Amplified signal output

 

 

Shield/Ground

SQ-214

Serial #0-7602

Input ground

Input power

4-20 mA signal output

Signal ground

 

Shield/Ground

Serial # 7603 and above or if sensor has a connector

Ground

Input power (7-24 V DC)

4-20 mA signal output

 

 

Shield/Ground

SQ-224

Serial #0-7597

Input ground

Input power

4-20 mA signal output

Signal ground

 

Shield/Ground

Serial # 7598 and above or if sensor has a connector

Ground

Input power (7-24 V DC)

4-20 mA signal output

 

 

Shield/Ground

SQ-215

Serial #0-7597

 

 

Input power

Positive (signal from sensor)

 

Ground (for sensor signal and input power)

Serial # 7598 and above or if sensor has a connector

Ground

Input power (5.5-24 V DC)

Amplified signal output

 

 

Shield/Ground

SQ-222

Serial #0-7597

 

 

Input power

Positive (signal from sensor)

 

Ground (for sensor signal and input power)

Serial # 7598 and above or if sensor has a connector

Ground

Input power (3.3-24 V DC)

Amplified signal output

 

 

Shield/Ground

SQ-225

Serial #0-7597

 

 

Input power

Positive (signal from sensor)

 

Ground (for sensor signal and input power)

Serial # 7598 and above or if sensor has a connector

Ground

Input power (5.5-24 V DC)

Amplified signal output

 

 

Shield/Ground

SQ-421

Serial # 0-2052

SDI-12 Data Line

Input Power (4.5-24 V DC)

 

 

 

Ground (shield wire)

Serial # 2053 and above or if sensor has a connector

Ground

Input Power (5.5-24 V DC)

SDI-12 Data Line

 

 

Shield/Ground

SQ-313

Serial # 0-3204

Negative (signal from sensor)

Positive (signal from sensor)

 

 

 

Shield/Ground

Serial # 3205 and above or if sensor has a connector

Negative (signal from sensor)

 

Positive (signal from sensor)

 

 

Shield/Ground

SQ-323

Serial # 0-3204

Negative (signal from sensor)

Positive (signal from sensor)

 

 

 

Shield/Ground

Serial # 3205 and above or if sensor has a connector

Negative (signal from sensor)

 

Positive (signal from sensor)

 

 

Shield/Ground

SQ-316

Serial # 0-3204

Negative (signal from sensor)

Positive (signal from sensor)

 

 

 

Shield/Ground

Serial # 3205 and above or if sensor has a connector

Negative (signal from sensor)

 

Positive (signal from sensor)

 

 

Shield/Ground

SQ-326

Serial # 0-3204

Negative (signal from sensor)

Positive (signal from sensor)

 

 

 

Shield/Ground

Serial # 3205 and above or if sensor has a connector

Negative (signal from sensor)

 

Positive (signal from sensor)

 

 

Shield/Ground

SQ-311

Serial # 0-3204

Negative (signal from sensor)

Positive (signal from sensor)

 

 

 

Shield/Ground

Serial # 3205 and above or if sensor has a connector

Negative (signal from sensor)

 

Positive (signal from sensor)

 

 

Shield/Ground

SQ-321

Serial # 0-3204

Negative (signal from sensor)

Positive (signal from sensor)

 

 

 

Shield/Ground

Serial # 3205 and above or if sensor has a connector

Negative (signal from sensor)

 

Positive (signal from sensor)

 

 

Shield/Ground

SQ-500

Serial # 0-1558

Negative (signal from sensor)

Positive (signal from sensor)

 

 

 

Shield/Ground

Serial # 1559 and above or if sensor has a connector

Negative (signal from sensor)

 

Positive (signal from sensor)

 

 

Shield/Ground

SQ-512

Serial # 0-1689

Ground

Power

Output

 

 

 

Serial # 1690 and above or if sensor has a connector

Ground

Input power (3.3-24 V DC)

Amplified signal output

 

 

Shield/Ground

SQ-515

Serial # 0-1689

Ground

Power

Output

 

 

 

Serial # 1690 and above or if sensor has a connector

Ground

Input power (5-24 V DC) 

Amplified signal output

 

 

Shield/Ground

SQ-521

 

 

Serial # 0-1689

SDI-12 Data Line

Input Power (4.5-24 V DC)

 

 

 

Ground (shield wire)

Serial # 1690 and above or if sensor has a connector

Ground

Input Power (5.5-24 V DC)

SDI-12 Data Line

 

 

Shield/Ground

SQ-422

Serial # 0-2052

 

 

 

 

 

 

Serial # 2053 and above or if sensor has a connector

Ground

Input Power (5.5-24 V DC)

RS232 Tx or RS485 +

Select – RS485/RS232

RS232 Rx or RS485-

Shield/Ground

SQ-522

Serial # 0-1689

 

 

 

 

 

 

Serial # 1690 and above or if sensor has a connector

Ground

Input Power (5.5-24 V DC)

RS232 Tx or RS485 +

Select – RS485/RS232

RS232 Rx or RS485-

Shield/Ground

 

 


All Other Apogee Sensors

Model

Serial #

Black

Red

White

Green

Yellow

Blue

Clear

Orange

SN-500

Serial # 1085 and less

SDI-12 Data Line

Input Power (4.5-24 V DC)

 

 

 

 

Ground (shield wire)

 

Serial # 1086 and greater

Ground

Input Power (5.5-15 V DC)

SDI-12 Data Line

 

 

 

Shield/Ground

 

TS-100

Fan

Serial # 0-1541

Ground (negative fan lead)

Input power (positive fan lead)

Pulse Counter or Control Port (tachometer output)

Control Port (PWM control)

 

Input Power (for tachometer)

Shield/Ground

 

Serial # 1542 and above or if sensor has a connector

Ground (negative fan lead)

Input power (positive fan lead)

Pulse Counter or Control Port (tachometer output)

Control Port (PWM control)

 

Input Power (for tachometer)

Shield/Ground

 

SL-510

Serial # 0-1073

Low side of differential channel (negative thermopile lead)

High side of differential channel (positive thermopile lead)

12 V DC (positive lead for heater)

Ground (negative lead for heater)

Single-ended channel (positive thermistor lead)

Excitation channel (excitation for thermistor)

Analog ground (negative thermistor lead)

 

Serial # 1074 and above or if sensor has a connector

Negative (signal from sensor)

Excitation channel (excitation for thermistor)

Positive (signal from sensor)

Single-ended channel (positive thermistor lead)

12 V DC (positive lead for heater)

Ground (negative lead for thermistor and heater)

Shield/Ground

 

SL-610

Serial # 0-1033

Low side of differential channel (negative thermopile lead)

High side of differential channel (positive thermopile lead)

12 V DC (positive lead for heater)

Ground (negative lead for heater)

Single-ended channel (positive thermistor lead)

Excitation channel (excitation for thermistor)

Analog ground (negative thermistor lead)

 

Serial # 1034 and above or if sensor has a connector

Negative (signal from sensor)

Excitation channel (excitation for thermistor)

Positive (signal from sensor)

Single-ended channel (positive thermistor lead)

12 V DC (positive lead for heater)

Ground (negative lead for thermistor and heater)

Shield/Ground

 

ST-100

Serial # 0-2724

Single-ended channel (positive thermistor lead)

Excitation channel (excitation for thermistor)

 

 

 

Analog Ground (negative thermistor lead)

Ground (shield wire)

 

Serial # 2725 and above or if sensor has a connector

Ground (negative thermistor lead)

Excitation channel (excitation for thermistor)

Single-ended channel (positive thermistor lead)

 

 

 

Shield/Ground

 

ST-110

Serial # 0-2724

Single-ended channel (positive thermistor lead)

Excitation channel (excitation for thermistor)

 

 

 

Analog Ground (negative thermistor lead)

Ground (shield wire)

 

Serial # 2725 and above or if sensor has a connector

Ground (negative thermistor lead)

Excitation channel (excitation for thermistor)

Single-ended channel (positive thermistor lead)

 

 

 

Shield/Ground

 

ST-200

Serial # 0-1351

Single-ended channel (positive thermistor lead)

Excitation channel (excitation for thermistor)

 

 

 

Analog Ground (negative thermistor lead)

Ground (shield wire)

 

Serial # 1352 and above or if sensor has a connector

Ground (negative thermistor lead)

Excitation channel (excitation for thermistor)

Single-ended channel (positive thermistor lead)

 

 

 

Shield/Ground

 

ST-300

Serial # 0-1075

Low Side of Differential Channel 2

High Side of Differential Channel 2

Analog Ground

Low Side of Differential Channel 1

 

High Side of Differential Channel 1

Ground (shield wire)

PRT Excitation Channel

Serial # 1076 and above or if sensor has a connector

Low Side of Differential Channel 1

Excitation channel (excitation for PRT)

High Side of Differential Channel 1

High Side of Differential Channel 2

Analog Ground

Low Side of Differential Channel 2

Shield/Ground

 

ST-150

Serial # 0-2724

Low Side of Differential Channel 2

High Side of Differential Channel 2

Analog Ground

Low Side of Diff. Channel 1

 

 

Ground (shield wire)

 

Serial # 2725 and above or if sensor has a connector

Low Side of Differential Channel 1

 

High Side of Differential Channel 1

High Side of Differential Channel 2

 

Low Side of Differential Channel 2

Shield/Ground

 

SF-110

Serial # 0-1137

Single-ended channel (positive leaf thermistor lead)

Excitation channel (excitation for leaf thermistor)

Excitation channel (excitation for bud thermistor)

Single-ended channel (positive bud thermistor lead)

 

Analog ground (negative leaf thermistor lead)

Analog ground (shield wire)

Analog ground (negative bud therm. lead)

Serial # 1138 and above or if sensor has a connector

Therm 1 (negative leaf thermistor lead)

Excitation channel (excitation for leaf and bud thermistor)

Therm 1 (positive leaf thermistor lead)

Therm 2 (positive bud thermistor lead)

 

Therm 2 (negative bud thermistor lead)

Shield/Ground

 

SF-421

Serial # 0-1013

SDI-12 Data Line

Input Power (4.5-24 V DC)

 

 

 

 

Ground (shield wire)

 

Serial # 1014 and above or if sensor has a connector

Ground

Input Power (5.5-24 V DC)

SDI-12 Data Line

 

 

 

Shield/Ground

 

SU-100

Serial # 0-2481

Negative (signal from sensor)

Positive (signal from sensor)

 

 

 

 

Shield/Ground

 

Serial # 2482 and above or if sensor has a connector

Negative (signal from sensor)

 

Positive (signal from sensor)

 

 

 

Shield/Ground

 

SB-100

Serial # 0-2404

Signal output; connect to single-ended channel

Input Power; connect to 5 V

 

Ground for signal output; connect to analog ground

 

 

 

 

Serial # 2405 and above or if sensor has a connector

Ground for signal output; connect to analog ground

Input Power (5 V)

Signal output (connect to single-ended channel)

 

 

 

Shield/Ground