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Laboratory Electronics

CARBON DIOXIDE CONCENTRATION METER ZFP9


  • function: toxic gases concentration in the air meter
  • measurement: CO2 concentration (carbon dioxide)
  • measurement method: NDIR
  • analogue output 4..20mA
  • 2 transmitter outputs
Miernik CO2 FUJI ZFP9

DESCRIPTION

Meter is used for measurement of carbon dioxide CO2 concentration in the free air. The meters are manufactured in versions that differ in the measurement scope.

The meter ZFP9 is a stationary device, of small size, powered from an outside source. The meter is characterized by a modern construction based on the NDIR method ( non-dispersive infrared method). It relays on the measurement of attenuation of infrared radiation and defined wave length put through the measured gas, suppressed depending on the carbon dioxide content in the gas examined. The NDIR method along with the device’s producer Japanese precision - Fuji company - assures accurate and stable measurement results and failure free work for many years (checked with many applications).

The meter has a built-in membrane filter of the gas provided for the measurement and a pump assuring constant flow of the measured gas with efficiency of approximately 0,6 liters per 1 minute. Gas is transported to the meter through a tube 4,8 mm in diameter.

The meter has two programmable transmitter outputs that are activated by the programmed CO2 levels (of regulated work thresholds in the measured scope 0...100%) and one analogue output 4..20 mA (of nonlinear characteristic).

Other additional options include: a digital interface RS-232 allowing on meter work in the LonWorks network or an interface S300, allowing on attaching the meter i.e. to a concentrator LB-731 or other device produced by LAB-EL.

Example scope of meter use::

  • CO2 concentration measurement in the mushroom-growing halls,
  • control of gas emission in the industry,
  • monitoring for supervision purposes,
  • work control of the ventilation systems in various locations.

TECHNICAL DATA

METER MEASUREMENT CHARACTERISTICS
Specification ZFP9AB41 ZFP9BB41 ZFP9CB41 ZFP9EB41
Sensor type NDIR NDIR NDIR NDIR
Scope of measurement 0...3000 ppm
0...0,3 %
0...10000 ppm
1...1%
0...5 % volume 0...20 % volume
CO2 measurement accuracy  1 % scope (30 ppm) 1 % scope (100 ppm) 1 % scope (500 ppm) 1 % scope (0,2 %)
Standard scope of an analogue output 0...3000 ppm 0...10000 ppm 0...5 % volume 0...20 % volume
CO2 measurement zero drift  < +/- 10% measurement scope / 6 months
CO2 measurement response time  10 seconds (for gas flow 0,6 l/min)
MEASUREMENT RESULT OUTPUTS
Analogue output 4..20 mA Robc <= 350 ohm
Transmitter output (alarm) 250 V / 3 A Resistance intensity
Transmitter output hysteresis +/- 4 % For a signal that equals 50% of the scope
WORK CONDITIONS
Scope of environment relative humidity 0...90 % without steam condensation
Scope of work temperatures   0...+40 C  
Scope of storage temperatures -20...+50 C  
Measured air pressure atmospheric indication dependability: +1,4 % na 1 kPa
POWER SUPPLY
Scope of voltages 230V +/- 10%  50..60 Hz
Energy consumption 18 VA  
OVERALL DIMENSIONS, MASS
Fuji ZFP9 Overall dimensions: 257 x 220 x 85 mm

Mass: approximately 3 kg