DR22
X
0 Radar Level Instrument
19
Product conditions:
Physical properties:
No effect on measurement results; for reliable measurements, the
relative permittivity should have the following minimum values:
Relative permittivity:
ε
r
is greater than 1.5;
ε
r
is less than 3 (still well recommended);
ε
r
is greater than 4 (Wave-Stick immersed).
Product limitations:
liquid ammonia (NH 3 ); liquid hydrogen (H 2 ); liquid helium (He)
Process temperature:
Unrestricted (subject to ambient and flange temperatures)
Operating pressure:
Horn antenna/Wave-Guide
Dependent on flange size and pressure rating (see
Flange Temperature).
Standard:
up to 938 psig/64 bar, up to 5800 psig/400 bar (higher on request)
Wave-Stick
Component parts:
Materials
Signal Converter Housing: Aluminium with electrostatic powder coating and sight
window glass.
Flange system, antenna,
Stainless steel 316 or 316 L, Hastelloy C4 or B2, titanium,
tantalum. (Other materials available on request).
Gaskets:
FFKM (Kalrez 4079 or Parofluor V 8545-75);
Kalrez 2035;
Viton (FPM);
FEP-coated (PTFE is also in contact with the product)
Wave-Stick:
PP or PTFE in contact with the product;
flanges made of 316 stainless steel
Component Parts:
Process Connection
Horn Antenna/Wave Guide: 2 to 8 inches, 150/300 lb/RF;
Wave-Stick:
1½-inch NPT, Flanges 2 to 6 inches;
Tri-Clamp:
2 to 4 inches
Electrical connection:
Cable entries: ½-inch NPT
Terminals: up to 12 gauge wire
High Integrity Ground: U-clamp terminal (up to 10 gauge wire)
Local operator interface:
Keypad:
4 keys
Local display:
3-line LCD.
Operator Interface
English, German, French, Spanish,
Language:
Portuguese, Swedish, and Italian.
Units of Lengths:
inches, feet, percent.m, cm, mm,
Volume:
US Gal, GB Gal, ft 3 , bbl, percent, m
3
, Liter,
Power supply:
Over 2-wire-connection:
4 to 20 mA
Electrical Connection:
Screwed Cable Gland
Intrinsically Safe Supply
U=17 to 30 Vdc
Any polarity possible
+16
(+232)
Pressure
psig (bar)
-1
(-14.5)
+1
(+14.5)
+302
(+150)
-4
(-20)
212
(100)
Temperature in ˚F (˚C)
