I thank you for your reply and effort. It has been found and for your info it is an ADC 16 bit devise.
https://www.relmon.com/en/mobile/index.php/welcome/download/114.html (datasheet for MS1100)
Hi could any one help with identifying this component please. It is on a gas detection /monitor circuit board. To me it looks like the part number is 1100. It is a 6 pin SMD.
My apologies the pictures are very poor.