Regarding MAG3100 with MAG6000

Hi!

Recently we've mounted Mag 3100 Sensor and MAG 6000 transmiter.

After I enter parameter value on transmiter, I checked flow rate.

The method of mesuring is as bleow.

1. pump start.

2. After 10 min, I stored the liquid for 1 min.

3. After that, I compared mesuring value on display of transmiter with real volume of Iiquid (alum) I stored.

But the value is difference.

-. Mesuring value on display : 9.4L per min

-. real volume of Iiquid I stored : 4.4L per min

I don't understand why the value is difference.

The transmiter doesn't display alarm information.

I attached file about regarding flow sensor installation on site.

Could you tell me what I'm should do first?

Thanks in advance for support.