Oval 50 - Operating Conditions

B-149-4N-E
5
1.4 Structural Considerations
(1) The register is of waterproof construction for
outdoor service.
(2) The register is type approved. Do not attempt to
replace component parts with others or make
any circuit modication.
(3) The pressuretight packing furnished constitutes
part of the flameproof construction. Do not
attempt to use any pressuretight packing other
than those furnished. The pressuretight packing
union s h o u l d be tightened securely upon
completion of connections.
(4) Of the four different pressuretight packings
(
φ
9,
φ
10,
φ
11 and
φ
12) furnished as standard
accessories, a
φ
11 packing is tentatively installed
in place.
Select from these and install the one that
best fits the finished outside diameter of your
particular cable.
Table 1.1 Applicable Cable Outside Dia. Unit in mm
Packing Code Packing I.D. Cable O.D.
9 9.0
8.5 to 9.0
10 10.0 9.1 to 10.0
11 11.0 10.1 to 11.0
12 12.0 11.1 to 12.0
CAUTION
Moisture allowed into the register wil cause
blurred display glass and functional trouble.
Pre c a u t i o n s o n cable l e a d - in f i t t i n g
(pressuretight packing), both explosionproof
and non-explosionproof models:
- Use a pressuretight packing that fits the finished
cable O.D.
- Tighten up properly to allow no clearance between
the pressuretight packing and the cable.
- If a pressuretight packing is not used, apply some
waterproof treatment to preclude any chance of
moisture getting into the equipment.
2. OPERATING CONDITIONS
To maintain the stated high accuracy and long
service life of SMART ULTRA OVAL flowmeter,
make sure that owrate, pressure, temperature and
viscosity are within the ratings as stamped on the
meter register nameplate. Do not fail to confirm
these ratings before placing it in service.
CAUTION
1. Although allowable ambient temperature is
up to +60 °C for explosionproof units, it is
desirable that the meter be used at room
temperature and humidity.
2. In cases where the register is exposed to
elevated temperatures due to exposure to
direct rays of the sun or to radiant heat,
ensure, by providing a sunshade or similar
protection, that the meter is used within
the operating temperature range.
NOTE: Avoid such installation locations where
1. Not easy to access for servicing.
2. Large temperature variation and vibration.
3. Potential risk of submersion in water.
4. Corrosive gas atmosphere.
5. Not compatible with ex. construction.
6. Near sources of strong magnetic noises.
Register
Cable Lead-in
(Pressure-resistant
packing)
NOTE:
P r es su re ti gh t p ac ki ng s a re n ot
supplied with nonexplosionproof
models.
ULTRA OVAL
MADE IN JAPAN MNPJ-237
OVAL Corporation
MODEL
TAG. No
MAX PRESS.
FLOW RANGE
INT.
CONT.
~
~
FULL SCALE
TEMP.
PULSE UNIT
SERIAL No.
FLUID
DATE
SIZE
METER FACTOR
NOTES
1. When measuring other liquids, consult us.
2. Place the meter body (outer case) in a horizontal
position. For details, see instruction manual.