Endress+Hauser Liquiphant FTL64 - Heartbeat Technology and Environmental Data; Heartbeat Technology Modules Overview; Ambient Temperature Range Considerations

Liquiphant FTL64 HART Technical data
Endress+Hauser 57
15.2.9 Heartbeat Technology
Heartbeat Technology module
The software package consists of 3 modules. These three modules combined check,
evaluate and monitor device functionality and process conditions.
• Heartbeat Diagnostics
• Heartbeat Verification
• Heartbeat Monitoring
15.3 Environment
15.3.1 Ambient temperature range
The following values apply up to a process temperature of +90 °C (+194). At higher
process temperatures, the permitted ambient temperature is reduced (see diagram).
• Without LCD display: –40 to +70 °C (–40 to +158)
• With LCD display: –40 to +70 °C (–40 to +158) with limitations in optical properties,
such as display speed and contrast
Can be used without limitations: –20 to +60 °C (–4 to +140 °F)
Optionally available:
• –50 °C (–58 °F) with restricted operating life and performance
• –60 °C (–76 °F) with restricted operating life and performance,
Below –50 °C (–58 °F): measuring devices can be permanently damaged
T
a
T
a
T
a
T
a
T
a
T
a
-58 -50
-50
-58
0
32
32 0
122 50
158 70
[°F] [°C]
190
374
230
440
280
540
T
p
T
p
T
p
T
p
T
p
T
p
1
1
2
2
A
A
B
B
[°C]
[°F]
0
32
32 0
158 70
[°F] [°C]
230
440
280
540
[°C]
[°F]
300
572
300
572
-60
-76
-58 -50
-50
-58
-60
-76
A0046917
 34 Permitted ambient temperature T
a
at the housing as a function of the process temperature T
p
in the vessel
A 230 °C (446 °F) sensor
B 280 °C (536 °F) sensor
1 Max. 50 h on cumulative basis
2 Only for ATEX and CSA certificates