infrared CO₂ analyser - ZFP9

Measuring CO2 concentration

Fields of application

The ZFP9 infrared CO2analyser enables precise, reliable measurement of CO2 concentration in controlled horticulture - Greenhouses, Building Ventilation Systems and Controlled Atmosphere Storage Facilities.

Benefits

  • High-performance infrared system
  • Excellent stability and easy maintenance
  • Compact and lightweight (approx. 3 kg)
Catalogue number: ZFP9-3
Public price 3187 €
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Features

The ZFP9 is a non-dispersive infrared (NDIR) analyser that monitors CO₂, measures the concentration of CO₂ in the air, displays the result and simultaneously emits an analog signal. It is suitable for use in grow rooms to maintain optimum CO₂ levels.

This device controls and monitors CO₂ levels in a wide range of applications, including greenhouses, grow rooms, residential environments, hydroponic systems, mushroom beds, plant production sites, as well as other settings such as research laboratories, educational establishments and commercial nurseries. Its high-precision NDIR sensor provides reliable measurements for effective environmental control, ensuring that the right level is maintained.

The ZFP9 features advanced controls that enable it to automatically activate or deactivate CO₂ supply or ventilation systems according to the values measured by the sensor, including a mode for safe operation during the hours of darkness, when plants are not photosynthesizing. It monitors CO₂ and operates reliably to optimize plant growth conditions.

Thanks to its standard alarm functions (high and low thresholds), it can also be used as a control element. Regular system checks are recommended to ensure that theanalyser functions correctly and maintains the correct level.

Technical Specifications

Gas measuredMeasurement of CO₂ content in air
PrincipleNon-dispersive infrared system (single-beam NDIR) with high-precision sensor for accurate CO₂ measurement.
Measurement scales0 to 0.2%, 0 to 0.3%, 0 to 1%, 0 to 5%, 0 to 10%, and 0 to 20% CO2; the device can be set to monitor specific CO₂ levels in %.
Output signal
4 - 20 mA non-linear (maximum load resistance 350 Ω)
0 - 100 mV DC non-linear (100Ω output resistance)
Alarm functionSetting range: 0 to 100% of full scale (FS).
Method: Display of set value with high/low limit.
Output: Relay contact (2×1c), capacity 250 V AC, 3 A, or 30 V DC, 3A (resistive load).
Alarm hysteresis: ±4% of scale (at 50% FS).
Alarm indication: An off-scale indicator (red) lights up when the CO2 concentration exceeds the high or low limit, or when the CO2 concentration is below the low limit.
DisplayEasy-to-read display showing CO₂ concentration scale.

Performance features

Repeatability±1% Full Scale (FS) - The sensor operates reliably for many years, with consistent performance. Periodic checks are recommended to ensure continued accuracy.
Zero drift±10% every 6 months - With proper maintenance and regular checks, the sensor will remain stable for many years.
≤ 10 s
Heating time
Approx. 30 minutes
Linearity±3% of full scale (FS) (only for 0 to 0.2% scale)
Gas samplingExtraction pump and filter
Supply voltage100, 115, 200, 220 V AC ±10%, 50/60 H

Calibration / Maintenance

Regular checks are recommended to ensure accuracy over time.

 

Physical specifications

Dimensions220 (W) x 257 (H) x 85 (D) mm
WeightApprox. 3 kg
Protection For indoor use, dust-proof and rugged housing for enhanced durability
Assembly
Wall-mounted, ready to install on delivery
Connection (gas inlet)Connection for Ø 4.8 mm tube
Electrical connectionM3 screw terminal block
MaterialsHousing (ABS), base plate (steel) robust housing designed for long-term use
Power consumptionApprox. 18 VA
Ambient humidityLess than 90% RH
Sample gas temperature0 to 50ºC
Storage temperature-20 to 50 ºC
Operating ambient temperature0 to 40 ºC

Standard delivery content

CO2 analyser : 1 unit
Paper filter: 5 sheets
Fuse (250 V 2A T): 2 pcs.
Ferrite core: 2 pieces

 

Items to order separately

Zero/scale calibration gas (ZBM type)
Pressure switch (type ZBD610)
Flowmeter for zero/span calibration (type ZBD472)

Compliance and Wiring Precautions

Compliance with EU Directives Low Voltage Directive (LVD 2014/35/EU) : EN 61010-1, EN 62311
Electromagnetic Compatibility (EMC 2014/30/EU) : EN 61326-1 (Table 1), EN 55011 (Group 1 Class A), EN 61000-3-2 (Class A), EN 61000-3-3, EN 61326-2-3
Restriction of Hazardous Substances (RoHS 2011/65/EU) : EN 50581

 

Introduction to CO₂ monitoring

Maintaining adequate levels of carbon dioxide is an essential factor in achieving optimum plant growth in grow rooms, grow tents and greenhouses. Plants depend on CO₂ for photosynthesis and, by carefully controlling this element, growers can significantly increase yields, improve plant health and reduce the risk of damage from CO₂ deficiency or excess. In controlled environments such as halls, tents and greenhouses, natural fluctuations in CO₂ are limited, making it essential to monitor and adjust levels to ensure plants have the ideal amount for robust development.

Non-dispersive infrared (NDIR) technology has become the standard for CO₂ monitoring devices due to its accuracy and reliability. NDIR sensors detect carbon dioxide concentrations in the air, enabling growers to maintain precise control of their environment. This technology is particularly valuable in halls and tents where maintaining constant CO₂ levels can be difficult, but remains fundamental to maximizing plant growth.

For growers looking to optimize their plant, choosing a CO₂ controller with advanced features - such as real-time monitoring, adjustable settings and reliable alarms - can make a real difference. The right device doesn't just maintain optimal CO₂ levels: it also protects plants from potential damage, ensuring that every crop benefits from the best possible conditions for healthy growth. Whether you're managing a large greenhouse or a small grow tent, investing in a high-quality CO₂ monitoring device is an important step towards achieving consistent, high-yield results.

Documentation

Certificate: UKCA ZFP9 infrared CO₂ analyser

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Certificate: EU declaration of conformity analyser CO₂ infrared ZFP9

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Manual: ZFP9 infrared CO₂ analyser

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datasheet : ZFP9 infrared CO₂ analyser

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Brochure: gas analysers , reliable solutions for analysis

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Application : Increase the yield and quality of greenhouse crops with precise CO₂ control.

Application sheet Download

Brochure: Measures for energy and the environment

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Technologies

  • NDIR CO2 controllers

    NDIR CO2 controllers

    Monitor and regulate CO₂ with the ZFP9 infraredanalyser , ideal for greenhouses, nurseries, building ventilation, food storage and laboratories.

infrared CO₂ analyser - ZFP9

Public price 3187 €

Reference : ZFP9-3

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