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Quality Instrumentation for the Life Sciences

Environmental Sensors & Chambers

PP Systems manufactures a range of external environmental sensors & chambers for use with our CO2 gas analyzers enhancing measurement capability.

apogee quantum sensor

Quantum Sensor

PAR (Photosynthetically Active Radiation)

Our Quantum Sensor (Apogee) is available for accurate measurement of PAR (Photosynthetically Active Radiation). It is specifically calibrated for use in sunlight conditions. The sensor housing features a fully potted, dome-shaped head, making the sensor completely weatherproof for self-cleaning.  Shown with optional leveling unit sold separately.

Technical Specifications

  • Dimensions: 33 mm (Height) x 24 mm (Diameter)
  • Cable Length: 5 meters
  • Weight: 90 g
  • Range: 0-3000 µmol m-2 s-1
  • Calibration Uncertainty: ± 5%
  • Measurement Repeatability: < 0.5%
  • Long Term Drift: < 2% per year
Soil Temperature & PAR Measurement

TRP-3 Temperature/PAR Probe

Temperature & PAR

Our TRP-3 Temperature/PAR Probe can be used for measurement of temperature and PAR. It consists of a rugged, aluminum housing with a black foam cover. The TRP-3 includes sample gas tubing to connect to the infrared gas analyzer and a standard tripod thread mount for use with commercially available tripods.

Technical Specifications

Dimensions

  • Handle: 165 mm (Length) x 38.6 mm (Diameter)
  • Tip: 20 mm

Cable Length: 1.5 meters

Weight: 0.36 kg

Temperature Sensor (Precision Thermistor)

  • Range: 0-50 °C
  • Accuracy: ± 0.3 °C at 25 °C

PAR Sensor Fully cosine corrected

  • Range: 0-3000 μmol m-2 s-1
  • Accuracy: ± 10 μmol m-2 s-1
soil temperature measurement

STP-2 Soil Temperature Probe

Soil Temperature

The STP-2 Soil Temperature Probe is a trusted plug and play accessory available for measurement of soil temperature. Electronics are housed in an anodized aluminum enclosure with a stainless steel tip. This rugged sensor is commonly used with the SRC-2 Soil Respiration Chamber and CPY-5 Canopy Assimilation Chamber.

Technical Specifications

Dimensions

  • Handle: 200 mm (Length) x 18.7 mm (Diameter)
  • Tip: 125mm (Length)

Cable Length: 1.5 meters

Weight: 0.1 kg

Temperature Sensor (Precision Thermistor)

  • Range: 0-50 °C
  • Accuracy: ± 0.3 °C at 25 °C
soil moisture and soil temperature

HydraProbe II (Stevens)

Soil Moisture & Soil Temperature

The Stevens HydraProbe is the most scientifically researched soil sensor available and is offered by PP Systems as an all-in-one in-situ sensor that can measure both soil moisture and soil temperature. This rugged probe has completely sealed electronics making it fully immersible in water, and three strong, non-bending and non-corrosive stainless steel tines.

For best results, the 3 prongs should be pushed all the way into the ground until the white body of the sensor is at minimum flush with the soil surface.

Technical Specifications

Dimensions

  • Handle: 152 mm (Length) x 26 mm (Diameter)
  • Tines: 58 mm (Length)

Cable Length: 1.5 m

Weight: .12 kg

Soil Moisture Sensor

  • Range: Dry – 100% of Saturation*
    *Saturation of mineral soils depends on soil and typically occurs from 35 to 50 volumetric percent

Soil Temperature Sensor

  • Range: -10 °C to 55 °C
  • Accuracy: ± 0.3 °C at 25 °C
Soil Respiration

SRC-2 Soil Respiration Chamber

Soil CO2 Efflux

The popular SRC-2 Soil Respiration Chamber is the industry standard for rapid, accurate survey measurement of soil CO2 efflux. The lightweight chamber is constructed of rugged PVC with a convenient handle for placement on the soil surface. A stainless steel ring provides a good seal on the soil surface or on collars.* A built-in temperature sensor measures air temperature near the soil surface a well as an internal fan to flush and mix the air.

*Optional collars are available from PP Systems.

Technical Specifications

  • Dimensions: 150 mm (Height) x 100 mm (Diameter)
  • Volume: 1171 ml
  • Area: 78 cm2
  • Cable Length: 1.5 meters
  • Weight: 0.9 kg

Temperature Sensor (Precision Thermistor)

  • Range: -5 °C to 50 °C
  • Accuracy: ± 0.5 °C at 25 °C
net canopy CO2 flux

CPY-5 Canopy Assimilation Chamber

Net Canopy CO2 Flux

Our CPY-5 Canopy Assimilation Chamber is available for measurement of net canopy CO2 flux on low-lying vegetation and fruit. Constructed of rugged polycarbonate, the interior of the transparent chamber includes a user-adjustable PAR (Photosynthetically Active Radiation) sensor and an air temperature sensor near the soil surface. An air mixing fan and custom manifold system ensures uniform circulation within the chamber. An aluminum ring provides a good seal on the soil surface or on collars*. The Water Vapor Equilibrator comes standard.

*Optional collars are available from PP Systems.

Technical Specifications

  • Dimensions: 145 mm (Height) x 146 mm (Diameter)
  • Area: 167 cm2
  • Cable Length: 1.5 meters
  • Weight: 1.05 kg

Temperature Sensor (Precision Thermistor)

  • Range: -5 °C to 50 °C
  • Accuracy: ± 0.5 °C at 25 °C

PAR Sensor Fully cosine corrected

  • Range: 0-3000 μmol m-2 s-1
  • Accuracy: ± 5 μmol m-2 s-1
  • Precision: 1 µmol m-2 s-1
Insect Respiration chamber

Insect Respiration Chamber

Insect Respiration

Our Insect Respiration Chamber can be used to measure CO2 respiration from small insects. Insects are easily introduced into the chamber by sliding off the black end caps on either end.

There are no electrical connections required. Literally plug and play, the white pneumatic connector snaps right into the PLC “Gas” port on the back of the CIRAS-3. The short gas tubing labeled “A” connects to one end of the chamber.

Technical Specifications

  • Chamber Dimensions: 15.1 cm (Length) x 25 cm (Diameter)
  • Chamber Volume: 33 cm3 (not including gas tubing)
  • Cable Length: .33 meters
  • Chamber Weight: 65 g

Sample Injection Kit

small volume sampling

Sample Injection Kit

Small Volume Sampling

PP Systems’ Sample Injection Kit includes a fully-assembled and leak-tested injection port with four spare septa and an absorber column to establish a zero baseline.

The injection port includes a 9 mm low-bleed septum that can withstand up to 50 injections (per the manufacturer’s specification) and a guide hole that will accommodate up to a 22-gauge syringe.

For best results, we recommend changing the septum every 25 injections.

Integrated Options

Further customize your system with these built-in options

O2 Sensor

An optional electrochemical O2 sensor can be installed for measurement of oxygen in addition to CO2.

Technical Specifications

  • Range: 0-100%
  • Response Time: ≤ 15 seconds at 23 ± 2 °C
  • Linearity: ± 1.0% of full scale

H2O Sensor

An optional solid-state H2O sensor can be installed for accurate measurement of humidity.

Technical Specifications

  • Chamber Dimensions: 15.1 cm (L) x 25 cm (D)
  • Chamber Volume: 33 cm3 (not including gas tubing)
  • Chamber Weight: 65 g

WiFi

WiFi can be integrated for remote real-time monitoring.

Accessory Compatibility by Instrument

Environmental Sensors & Chambers for Older Instruments

PP Systems still manufactures some of our environmental sensors and chambers for older instruments.

CPY-4 Canopy Assimilation Chamber

Compatibility

  • EGM-1 through EGM-4 Portable CO2 Gas Analyzers
  • CIRAS-1 & CIRAS-2 Portable Photosynthesis Systems

SRC-1 Soil Respiration Chamber

Compatibility

  • EGM-1 through EGM-4 Portable CO2 Gas Analyzers
  • CIRAS-1 & CIRAS-2 Portable Photosynthesis Systems

STP-1 Soil Temperature Probe

Compatibility

  • EGM-1 through EGM-4 Portable CO2 Gas Analyzers
  • CIRAS-1 & CIRAS-2 Portable Photosynthesis Systems

TRP-2 Temperature/PAR Probe

Compatibility

  • EGM-1 through EGM-4 Portable CO2 Gas Analyzers
  • CIRAS-1 & CIRAS-2 Portable Photosynthesis Systems (adaptors may be needed)
  • SBA-1 through SBA-4 CO2 Gas Analyzers (adaptors may be needed)
  • WMA-1 through WMA-4 CO2 Gas Analyzers (adaptors may be needed)