iTEMP TMT71, TMT72 Installation
Endress+Hauser 13
4.1.3 Important ambient conditions
• Ambient temperature: –40 to +85 °C (–40 to 185 °F), .
• Head transmitter in accordance with climate class C1, DIN rail transmitter in accordance
with B2 as per EN 60654-1
• Condensation as per IEC 60068-2-33 permitted for head transmitter, not permitted for DIN
rail transmitter
• Max. rel. humidity: 95% as per IEC 60068-2-30
• Degree of protection:
• Head transmitter with screw terminals: IP 00, with push-in terminals: IP 30. In installed
state, depends on the terminal head or field housing used.
• When installing in field housing TA30x: IP 66/68 (NEMA Type 4x encl.)
• DIN rail device: IP 20
4.2 Installation
A Phillips head screwdriver is required to mount the head transmitter.
• Maximum torque for securing screws = 1 Nm (¾ foot-pound), screwdriver: Pozidriv Z2
• Maximum torque for screw terminals = 0.35 Nm (¼ foot-pound), screwdriver: Pozidriv Z1