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Diffusion Vs. Pumped Fixed Gas Detection

Diffusion Fixed Gas Detection Device

A diffusion gas detection device works, as the name suggests, on the diffusion principle. The sensor is exposed to the ambient air and will measure the gas by means of the diffusion principle. Diffusion means proportional spread of molecules over the available space (from high concentration to low concentration). This also means that a diffusion gas detection device is only able to measure the concentration of gases at the location where the device is located. Since there is no forced flow of the gas to be measured, this device is not suitable for taking measurements remotely, but they do accurately identify what’s present in a given location.

Pumped Fixed Gas Detection Device

Pumped instruments are equipped with a built-in sampling pump. This means that the device is constantly drawing in gases. A sampling hose may be connected to extend the reach. This means that you can take a measurement from a safe distance so you have an idea of which gases will be present in which concentration before you are exposed to this environment. This allows you to make an appropriate risk analysis and make the right strategy and PPE choices based on the measurement results. By positioning the measuring hose correctly, you can also make a correct measurement at different heights to chart all risks.

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Sensori OEM – Confronto

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Scorri per confrontare tutti i sensori di gas OEM, seleziona per nascondere i sensori per confrontare le varianti più adatte.

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Specifiche Comparative
Variante del sensore	MiniPID 2 PPM WR	MiniPID 2 PPM	MiniPID 2 PPB WR	MiniPID 2 PPB	MiniPID 2 HS	MiniPID 2 10.0 eV	MiniPID 2 11.7 eV	MiniPID 2 PPB XF
Colore pila elettrodi	Blu	Blue	Bianca	Bianca	Rosso	Spot bianco + oro	Bianca	Bianco + Filtro
Limite di rilevamento minimo	500 ppb	100 ppb	20 ppb	1 ppb	0.5 ppb	5 ppb	100 ppb	1 ppb
Gamma	0 to >10,000 ppm	0 to 4000 ppm	0 to >200 ppm	0 to >40 ppm	0 to >3 ppm	0 to >100 ppm	0 to >100 ppm	>40 ppm
Tempo di risposta T90 (s)	<3	<3	<8	<8	<12	<8	<8	<12s
Sensibilita	>0.4 mV/ppm @ 100 ppm	>0.65 mV/ppm @ 100 ppm	>5 mV/ppm	>30 mV/ppm	>600 mV/ppm	>15 mV/ppm	>1 mV/ppm	>30 mV/ppm
Energia della lampada	10.6 eV	10.6 eV	10.6 eV	10.6 eV	10.6 eV	10.0 eV	11.7 eV	10.6eV
	Dettagli del prodotto	Dettagli del prodotto	Dettagli del prodotto	Dettagli del prodotto	Dettagli del prodotto	Dettagli del prodotto	Dettagli del prodotto	Dettagli del prodotto