COMBI 5000: pH + EC + AM + VWC + Temp. + rH + hPa + C° Description：

operation manual

The COMBI 5000 is a universal device for the immediate measurement of the most important parameters in plant production.

Universal use:

Large selection of measurement options.

No application errors:

The latest microprocessor technology enables automatic sensor recognition: each time the probe is changed, the device automatically switches to the corresponding measuring mode.

Easy handling:

The automatic buffer detection during calibration also ensures a high level of ease of use and ensures additional safety.

Fast work:

Probes can be easily replaced during measurements without having to restart.

Time saving:

Simultaneous measurement of different parameters.

Always ready for use:

The device is delivered in a sturdy aluminum case, where all accessories are stored safely and within easy reach.

Multicultural:

The simple and easy-to-understand menu navigation can be set in three languages: DE, EN, RU.

Smart:

Evaluation via the COMBI 5000 app guarantees quick and easy storage and interpretation of all measured values for different cultures.

Scope of delivery:

Basic device COMBI 5000 including data logger function

pH puncture electrode

Buffer solutions pH 4 and pH 7

EC electrode

Calibration solutions 1.4 mS and 111.8 mS

Multi-probe

HPT probe

piercing mandrel

Squirt bottle, 250 ml

Volume measuring cup, 100 ml

Instructions

Sturdy suitcase

Technical data

COMBI 5000 basic device

Housing: splash-proof

Inputs: BNC and 8-PIN socket

Voltage: 9V battery, > 4000 measurements

Display: alphanumeric, reflective

Size: 180x85x50mm

Weight: 280g

pH measurement

The pH value is one of the most important parameters in plant nutrition. The absorption of nutrients by plants depends heavily on the pH value. With the COMBI 5000 and the measuring electrode specially developed for soil analysis, the pH value can be measured directly in the soil.

Measuring range: 0 - 14 рН

Resolution: 0.01 pH

Accuracy: 0.2 pH

Calibration: Calibration at pH 4, 7 and 10 with automatic buffer detection

Electrode: low-maintenance, gel-filled pH puncture electrode with 3 ceramic diaphragms

Electrode length: 125 mm

Areas of application: pH direct measurement in soil or substrate and in aqueous solutions

EC measurement

The electrical conductivity (EC) of an aqueous solution is directly dependent on the concentration of dissolved salts: the higher the salt content, the higher the conductivity. For plant nutrition, EC measurement of the process water and the nutrient solution is necessary, especially in closed and hydroponic culture processes.

Measuring range: 0 - 200 mS

Resolution: 0.001 - 0.01mS

Accuracy: ±2% of reading

Calibration: possible at 0.084 / 1.41 / 5.0 / 12.88 / 111.8 mS/cm

Electrode: EC plastic electrode with platinum sensors (automatic temperature compensation)

Electrode length: 125 mm

Areas of application: Conductivity measurement in aqueous solutions

Multi-probe: activity, humidity, temperature measurement

The multi-probe enables simultaneous measurement of activity (salinity), humidity (volumetric) and temperature. The activity determines the salt content directly in the soil or substrate, taking into account the respective soil properties, such as soil moisture, temperature and density. These factors determine the dissolved salts that are “active” and can be absorbed by plants under the given conditions.

Soil moisture is determined volumetrically using the FDR measuring principle. This means that the influence of pH and salinity of the soil or substrate can be neglected.

The temperature measurement is carried out in the range from -10°C to +50°C by a fast-reacting NTC sensor cast in the probe tip.

Multi-probe:

Probe: plastic, glass fiber reinforced, ? 10 mm

Probe length: 250 mm

Sensors: FDR capacitive (humidity), NTC (temperature), bi-pol (salinity)

Temperature compensation: automatic

Areas of application: measurement of salinity, temperature, soil and substrate moisture

Activity measurement (salinity):

Measuring range: 0 - 9.99 g/L active salts

Resolution: 0.01 g/L active salts

Calibration: factory, stable

Temperature measurement:

Measuring range: -10 ... +50°C

Resolution: 0.1°C

Soil moisture measurement:

Measuring range: 0.5% to 60%

Resolution: 0.1%

Calibration: 0%: against air and 60%: in water

HPT probe:

The HPT probe enables simultaneous measurement of air temperature, humidity and air pressure. The sensor's integrated sensor system is highly precise and has a very fast response time. Like all COMBI 5000 sensors, the air temperature and humidity sensor is of course automatically recognized directly when connected to the basic device using special coding. The new HPT sensor is particularly important in greenhouse cultivation with ventilation and shading installations. Expanding the control options for growth conditions by measuring air temperature and humidity is a further step in the development of a fully comprehensive, multifunctional control system in professional plant production.

Humidity measurement：

Measuring range: 10 - 100 rH%

Resolution: 0.1rH%

Accuracy: 2%

Calibration: factory

Air pressure measurement:

Measuring range: 260 … 1260 hPa

Resolution: 0.1hPa

Accuracy: 0.5hPa

Calibration: factory

Air temperature measurement:

Measuring range: -20 … +80 °C

Resolution: 0.1°C

Accuracy: ±0.2%

Calibration: factory

Data logger function:

The basic device has an integrated data logger that records all of the device’s measurements. Using the transfer cable to the computer's USB interface, all data stored in the device (parameters and measured values with date and time) can be transferred. The data transfer protocol is output in CSV data format and can easily be transferred to an Excel file, for example.

Measuring cycle: 1 minute - 24 hours

Storage space: up to 2620 data sets

Accessories: transmission cable, 8-pin/USB