Greisinger gmh 3750 digital thermometer greisinger gmh 3750 p the greisinger gmh 3750 is a precision thermometer for temperature measurement using the exchangeable 4 wire pt100 temperature sensors the gmh 3750 has a high screen resolution and precision temperature values can be measured from 200 deg c to 850 deg c p p applications reference measuring in liquids soft media air and gases due to the excellent system accuracy the gmh 3750 especially suitable for quality assurance ac