YOKOGAWA RAMC User Manual

<9. TECHNICAL DATA>
9-18
IM 01R01B02-00E-E 12th edition October 01, 2014 -00
All Rights Reserved. Copyright © 2003, Rota Yokogawa
9.5 Temperature graphs for RAMC metal design,
standard and intrinsic safe
T10.EPS
0
50
100
150
200
250
300
350
400
20 30 40 50 60 70 80 90
Ambient temperature [°C]
max process temperature [°C]
without option /A16
with option /A16 and insulation
with option /A16, no insulation
0
50
100
150
200
250
300
350
400
20 30 40 50 60 70
Ambient temperature [°C]
max process temperature [°C]
without option /A16
with option /A16 and insulation
with option /A16, no insulation
-200
-150
-100
-50
0
-30 -20 -10 0
Ambient temperature [°C]
min process temperature [°C]
Low temperature curve
with option /A16 and insulation
0
20
40
60
80
100
120
20 30 40 50 60 70
Ambient temperature [°C]
max. process temperature [°C]
fig. 7a RAMC : - type 90 / 91
- only with indicator
fig. 7b RAMC : - type 90 / 91
- with limit switches
- with electronic transmitter
fig. 7d RAMC : - type 90 / 91
- with or without limit switches
- with or without electronic transmitter
fig. 7c RAMC : - type 66
- with or without limit switches
- with or without electronic transmitter
-40
The temperature graphs are reference values for size DN100. They may be inuenced negative by trapped heat, external heat
sources or radiated heat and inuenced positive for smaller sizes.
Insulation means rock wool between tube and indicator.
Units with electronic transmitter can show the temperature of the internal transmitter on the display or HART- type can show
and supervise the internal temperature by HART-communication.
Units with PTFE lining are usable up to 130°C.
For units with explosion proof certication the temperature limits according the certicate of conformity must be regarded (see
also page 9-8 to 9-11).

YOKOGAWA RAMC Specifications

General

Brand	YOKOGAWA
Model	RAMC
Category	Measuring Instruments
Language	English