Process; Process Temperature Range; Thermal Shock; Process Pressure Range - Endress+Hauser Liquiphant FTL64 Operating Instructions Manual

Liquiphant FTL64
Endress+Hauser
14.4

Process

14.4.1

Process temperature range

• –60 to +230 °C (–76 to +446 °F)
• –60 to +280 °C (–76 to +536 °F)
• –50 to +230 °C (–58 to +446 °F) with PFA coating (conductive)
• 300 °C (572 °F) for a maximum of 50 h (cumulative)
Pay attention to the pressure and temperature dependence, see the "Sensor process
pressure range" section.
14.4.2

Thermal shock

Without restrictions within the process temperature range.
With PFA coating (conductive): ≤ 120 K/s
14.4.3

Process pressure range

WARNING
L
The maximum pressure for the measuring device is dependent on the lowest-rated
element, with regard to pressure, of the selected components. This means that it is
necessary to pay attention to the process connection as well as the sensor.
‣
For pressure specifications, see the "Mechanical construction" section.
‣
The measuring device must be operated only within the specified limits!
‣
The Pressure Equipment Directive (2014/68/EU) uses the abbreviation "PS". The
abbreviation "PS" corresponds to the MWP (maximum working pressure) of the
measuring device.
In the event of higher temperatures, refer to the following standards for the permitted
pressure values of the flanges:
• pR EN 1092-1: 2005 With regard to its stability-temperature property, the material
1.4435 is identical to 1.4404, which is classed as 13E0 in EN 1092-1 Tab. 18. The
chemical composition of the two materials can be identical.
• ASME B 16.5
• JIS B 2220
In each case, the lowest value from the derating curves of the device and the selected
flange applies.
Process pressure range of the sensors
p
[psi]
e
1450 100
914 63
32 0
-14.5 -1
[bar]
-60 0
-76 32
Technical data
[°C]
260 280
T
p
[°F]
500 540
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