Archie
Member
I am working on a machine with 2 analog inputs
1) 4-20mA pressure transducer
2) 0.5-4.5 Volt LVDT
The machine captures a reading from the LVDT at a certain pressure, delays 0.75s, then captures another reading to calculate the distance travelled.
The problem I am having is conversion rate. The controller is a ML1400 with a 1762-IF4 expansion card. According to the manual my fastest cinversion is 130ms and I have all channels set to maximum speed, but it is still way to slow. I really need something that converts in about 20ms with at least a 15 bit resolution.
I can't find the conversion rate for the 1762-IF2OF2 module. I considered the mV module and use a voltage divider, but that will most likely introduce a bit of noise.
My real problem is that I do not have enough space to put anything much bigger than the ML1400.
What are my options?
1) 4-20mA pressure transducer
2) 0.5-4.5 Volt LVDT
The machine captures a reading from the LVDT at a certain pressure, delays 0.75s, then captures another reading to calculate the distance travelled.
The problem I am having is conversion rate. The controller is a ML1400 with a 1762-IF4 expansion card. According to the manual my fastest cinversion is 130ms and I have all channels set to maximum speed, but it is still way to slow. I really need something that converts in about 20ms with at least a 15 bit resolution.
I can't find the conversion rate for the 1762-IF2OF2 module. I considered the mV module and use a voltage divider, but that will most likely introduce a bit of noise.
My real problem is that I do not have enough space to put anything much bigger than the ML1400.
What are my options?