Hi Im using the arduino DHTLib with multiple dht22 sensors however its a bit slow every time I take a read of the temperature and humidity which is every 2 sec.Is there a library available that wont cause as much of a delay when I read the data from the sensor?
The DHT22 has a maximum .5 Hz sampling rate - once every two seconds. Nothing in the library can change that.
The 2 seconds delay is in the datasheet, you may shorten this delay but you should know you're operating outside the formal specification. It might work e.g. 1 second intervals or even shorter, but there is no guarantee.
Is the temperature / humidity of your process changing so rapidly that you need a faster measurement? For temperature you could consider the DS18B20 which is at the same precision about 10x faster.