Q-Box RP1LP Low Range Respiration Package, designed to measure the metabolic rate of small animals such as insects, reptiles, amphibians, but also fungal colonies and root respiration in an open-flow or closed-flow stop-flow gas exchange system. Automatic calculations of both O2 and CO2 change rates are recorded. The Q-S151 CO2 Gas Analyser and the Q-S102 O2 Sensor are essential components of the research package; the versatility of the system can be extended to up to 8 channels by optional Gas Switching Systems. The Q-RP1LP system is ideal for root respiration measurements and insect respirometry studies.
Q-S159 CO2 and O2 Analyser, a versatile combination of a flow-through non-dispersive infrared CO2 analyser, a galvanic cell O2 sensor and a built-in pressure sensor. These three independent sensors are mounted in series in a rugged temperature controlled case. The CO2 analyser can be customised for different ranges from ppm to % and its resolution depends on the range. The O2 analyser provides measurements in the 0-25% oxygen range with a resolution of ±40 ppm. The pressure sensor measures the absolute pressure at the O2 sensor, and this measurement is used in the software to correct the O2 signal for changes in system pressure. The range of the CO2 sensor is determined by the application - varying from respirometry of small to large animals to environmental monitoring of indoor and outdoor environments. The Q-S159 is a flow-through analyser, and the gas must be delivered to the sensors under pressure. Therefore, the Q-S159 can be purchased as:
The analyser is housed in a robust, temperature controlled case for improved signal stability, making it ideal for field use with an optional battery pack. The Q-S159 provides three 0-5V analogue outputs (CO2, O2 and pressure). The Q-S159 CO2 and O2 analyser requires a data interface and software for data acquisition and display; we recommend using the data interface and software supplied, but other data acquisition systems are compatible.
Operating principles: Non-dispersive infrared CO2 sensor and an acid electrolyte, Teflon diffusion membrane O2 sensor, respectively. Pressure sensor monolithic silicon
Maximum gas flow rate: 650 mL min-1
Analogue output: 0 - 5 V, CO2, O2, pressure; + flow (S159-PF only)