Thanks!

So since pulse duration is so long, instead of pulsin I can use something like
WHILE PIN=1 A=A+1 and then count number of A's ?

For the analog output, my particular sensor does not have it, I talked to manufacturer (I bought sensor directly from them), they said this is optional feature and had to be noted when ordering the sensor.

Arduino library for the sensor is available, I'll try to connect to it later and check that way.