Endress+Hauser Micropilot FMR51 - Ambient Temperature Limits; Ambient Temperature Range; Environment

Micropilot FMR51, FMR52
50 Endress+Hauser
Environment
Ambient temperature range
Measuring device –40 to +80 °C (–40 to +176 °F); –50 °C (–58 °F) with manufacturer declaration on
request
Local display –20 to +70 °C (–4 to +158 °F), the readability of the display may be impaired at
temperatures outside the temperature range.
When operating the device in the open with strong sunlight:
• Mount the device in a shady position.
• Avoid direct sunlight, especially in warmer regions.
• Use a weather protection cover (see accessories).
Ambient temperature limits
The following diagrams take into account only functional aspects. There may be further
restrictions for certified device versions. Please refere to the separate Safety Instructions
→  110.
With a temperature (T
p
) at the process connection the admissible ambient temperature (T
a
) is
reduced according to the following diagram (temperature derating):
Information concerning the derating tables
Option Meaning
A 2-wire; 4-20 mA HART
B 2-wire; 4-20 mA HART, switch output
C 2-wire; 4-20 mA HART, 4-20 mA
E 2-wire; FF, switch output
G 2-wire; PA, switch output
K 4-wire 90-253VAC; 4-20 mA HART
L 4-wire 10, 4-48VDC; 4-20 mA HART
FMR51
Seal:
• Viton GLT, –40 to 150 °C (–40 to 302 °F)
• Kalrez, –20 to 150 °C (–4 to 302 °F)
Housing: GT18 (316 L)
Temperature unit: °C (°F)
T
p
P5
P4
P3
P2
P1
T
a
A0019351
Power Supply; Output (Pos. 2
of the product structure)
P1 P2 P3 P4 P5 P6
T
p
T
a
T
p
T
a
T
p
T
a
T
p
T
a
T
p
T
a
T
p
T
a
A -40
(-40)
81
(178)
81
(178)
81
(178)
150
(302)
66
(151)
150
(302)
-40
(-40)
-40
(-40)
-40
(-40)
- -
B
Switch output not used
-40
(-40)
82
(180)
82
(180)
82
(180)
150
(302)
67
(153)
150
(302)
-40
(-40)
-40
(-40)
-40
(-40)
- -
B
Switch output used
-40
(-40)
77
(171)
77
(171)
77
(171)
150
(302)
61
(142)
150
(302)
-40
(-40)
-40
(-40)
-40
(-40)
- -
C
Channel 2 not used
-40
(-40)
82
(180)
82
(180)
82
(180)
150
(302)
67
(153)
150
(302)
-40
(-40)
-40
(-40)
-40
(-40)
- -
C
Channel 2 used
-40
(-40)
79
(174)
79
(174)
79
(174)
150
(302)
63
(145)
150
(302)
-40
(-40)
-40
(-40)
-40
(-40)
- -
E, G
Switch output not used
-40
(-40)
83
(181)
83
(181)
83
(181)
150
(302)
68
(154)
150
(302)
-40
(-40)
-40
(-40)
-40
(-40)
- -