Ametek DR22X0 Series Installation And Operating Instructions Manual page 23

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

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