Endress+Hauser Thermophant T TTR31 Operating Manual page 32

Technical data
9.3.2 Process
Process temperature limits
• -50 to 150 °C (-58 to 302 °F) generally,
• -50 to 200 °C (-58 to 392 °F) version TTR35 with neck
"
Caution!
Restrictions depending on process connection and ambient temperature:
• No restriction with coupling (see Accessories, → Chap. 7.1.1, → Chap. 7.1.4, order no.
51004751, 51004753) and neck tube length min. 20 mm (0.79").
• with process connection:
max. ambient temperature
up to 25 °C (77 °F)
up to 40 °C (104 °F)
up to 60 °C (140 °F)
up to 85 °C (185 °F)
Process pressure limits
Maximum permitted process pressure depending on the insertion length.
Fig. 15: Maximum permitted process pressure
L = insertion length
p = process pressure
The diagram takes into consideration not only the overpressure but also the pressure load caused
by the flow, whereby a safety factor of 1.9 has been specified for operation with flow. The
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max. process temperature
no restriction
135 °C (275 °F)
120 °C (248 °F)
100 °C (212 °F)
TTR31, TTR35
a0008063-en
Endress+Hauser