A
hi,
We have a flow transmitter when we check the setting of this transmitter with HARD system. I see these value for range values:
URL: 9.05 KG/S
LRL: 0 KG/S
USL: 2.9006 KG/S
LSL: 0 KG/S
I think URL & LRL are the range value and these range is corrected for flow and the USL & LSL are the sensor limit but I confused why the sensor limit is less than the range value. I know the range value from zero to 9.05 kg/s is correct.
The type of this flow meter is orifice. when connected to this transmitter by HARD system, we see the dp value, PT value, TT value & mA value. we have six this flow meter for six turbines. for each gas turbines this flow meter has correct dp, TT, PT value. but for one of these gas turbine the USL value is 0.60817, and when this flow meter calculate the flow, the flow value is 1/5 correct value. for example for gas turbine load the flow must be 6.5 kg/s, but the transmitter indicate 1.45 kg/s.
The flow value for another flow meters means for five turbines are correct and the USL value for five turbines is 2.9006 kg/s.
Please help me to know why?
Why the USL value is less than the Range value? and when this value effect on flow value? I'm really confused.
Thanks a lot for help and response me.
We have a flow transmitter when we check the setting of this transmitter with HARD system. I see these value for range values:
URL: 9.05 KG/S
LRL: 0 KG/S
USL: 2.9006 KG/S
LSL: 0 KG/S
I think URL & LRL are the range value and these range is corrected for flow and the USL & LSL are the sensor limit but I confused why the sensor limit is less than the range value. I know the range value from zero to 9.05 kg/s is correct.
The type of this flow meter is orifice. when connected to this transmitter by HARD system, we see the dp value, PT value, TT value & mA value. we have six this flow meter for six turbines. for each gas turbines this flow meter has correct dp, TT, PT value. but for one of these gas turbine the USL value is 0.60817, and when this flow meter calculate the flow, the flow value is 1/5 correct value. for example for gas turbine load the flow must be 6.5 kg/s, but the transmitter indicate 1.45 kg/s.
The flow value for another flow meters means for five turbines are correct and the USL value for five turbines is 2.9006 kg/s.
Please help me to know why?
Why the USL value is less than the Range value? and when this value effect on flow value? I'm really confused.
Thanks a lot for help and response me.