Plain tube Physical dimensions Threaded protection sleeve Weld-in protection sleeve The transmitter MINI90 consist of a temperature probe and an electronic transmitter mounted in the terminal head. A thermoresi- stance element Pt100 according to DIN 43760 is used as tempera- ture sensor. The thermometer tube is made from inox steel no. 1.4571. Three versions are available: plain tube to be used in protection sleeves, tube end perforated to be used in ventilating systems and tube with welded screwing R 1/2 in for direct mounting. Smallest span: Maximum temperature Sensor element: Two-wire Transmitter: Supply voltage: Three-wire Transmitter: Supply voltage: Ambient temperature Time constant: Tolerance limit: plastic ABS, light grey Time constants at different conditions: Medium water with protection sleeve, brass with protection sleeve, brass oil-filled with protection sleeve, steel with protection sleeve, steel oil-filled plan tube Two-wire system, output 4 ... 20 mA 7120 Two-wire system, output 4 ... 20 mA 7121 welded screwing R1/2 in, mounting length 100 mm Two-wire system, output 4 ... 20 mA 7122 Mounting flange MF-M90 for air ducts 71201 Threaded protection sleeve SHS-M90 brass, brazed 71202 Weld-in protection sleeve SHE-M90 standard steel St37 PN40 71203 corrections reserved