Swirlmeter (TRIO-WIRL S) 2 - 6
PN25080
TRIO-WIRL INSTRUCTION MANUAL
INSULATING THE SWIRLMETER
The flowmeter primary can be insulated to a max. thickness of
4 inches (100 mm) [Refer to Figure
FLOWMETER PRIMARY INSTALLATIONS FOR
FLUID TEMPERATURES > 300
o
F (150° C)
In horizontal installations,
when process tempera-
tures above 300
o
F (150
o
C) are encountered, the
meter must be oriented so that the junction box is
located to the side or below meter body, not above.
Refer to Figure
for an example of the recom-
mended high-temperature application orientation.
NOTE:
The interrelationship between the fluid and
ambient temperatures must be considered (Refer to
Figure
1) Cables suitable for use to 230
o
F (110°C) can be
used for power supply terminals 31 & 32 and contact
output terminals 41 & 42 without any reduction in the
temperature range specifications. Cables suitable only
for temperatures of 175
o
F (80°C) reduce the tempera-
ture range of the flowmeter as shown in Figure
.
WARNING
WHEN THE METER IS USED IN A VERY HIGH OR
LOW TEMPERATURE PROCESS, THE TEMPER-
ATURE OF THE METER BODY MAY BE
EXTREMELY HOT OR COLD. IF IT IS NECES-
SARY TO TOUCH THE SENSOR HOUSING OR
METER BODY, INSULATED GLOVES MUST BE
WORN TO PREVENT SERIOUS INJURY.
FIGURE 2-6 INSULATING THE PIPELINE
CAUTION
THE PIPELINE AND METER BODY MAY BE INSU-
LATED BY THE USER UP TO A THICKNESS OF 4
IN. (100 MM) BUT THE METER INTERCONNEC-
TION WIRING BOX AND SENSOR HOUSING
TOWER MUST NOT BE INSULATED. AMBIENT
AIR IS REQUIRED TO DISSIPATE HEAT OR COLD
BUILD-UP WITHIN THE INTERCONNECTION WIR-
ING BOX.
FIGURE 2-7 ORIENTATION FOR TEMPERATURES
>300° F (150° C)
Ambien
t T
emp
eratur
e [°C]
1)
Allowable Temperature
Range (only primary)
Side View, Pipline
Installations for
Fluid Temperature
Fluid Temperature [°C]
o
F = [1.8 x
o
C] + 32
-20
FIGURE 2-8 AMBIENT/FLUID TEMPERATURE
RELATIONSHIP
