Technical information

7500 RTG
16 Varec, Inc.
Technical Specifications
The following specifications apply to the 7500 Series
Radar Tank Gauge 7530, 753, 7532 and 7533 RTG over
the normal (ambient) operating temperature rangethat
can be calibrated for inventory control and custody
transfer applications according to regulatory standards
in compliance with OIML R85.
General
Physical
Power
HART Field Communications
Environmental
T
Process Temperature Tange
Manufacturer
Varec, Inc.
Designation
7500 Series Radar Tank Gauge
7530/7531/7532/7533 RTG
Function
Level-Radar Smart Transmitter for
continuous and non-contact
precision level measurement. For
custody transfer and inventory
control applications with NMi- and
PTB-approvals.
Weight
7530 RTG 7.1 kg + weight of flange
7531 RTG 5 kg + weight of flange
7532 RTG 6.5 kg + weight of flange
7533 RTG 13 kg + weight of flange
Process connection
See Ordering information.
All process connections dispose of a
gas-tight glass feed-through to
prevent any gas leakage to the inside
of the housing.
Enclosure
IP 65, NEMA 4X (open housing and
removed liquid crystal display: IP20,
NEMA 1
Housing T12: separate terminal
compartment for increased safety
respectively explosion proof.
Material: aluminium, seawater
repellent, chromate, powder coated
Sight window: glass
Antenna
IP 68 (NEMA 6P)
Conduit entries
M20x1.5; Pg 13.5 (gland included);
¾ NPT; G ¾ internal thread
Power consumption
Max. 330 mW at 16 V, max. 500 mW
at 24 V, max. 600 mW at 30 V.
Current
consumption
Max. 21 mA (50 mA inrush current).
Supply voltage
DC voltage: 16…36 VDC
Min load
250 Ω
Cable
Four (4) wire, twisted pairs (wire diameter
0.5…2.5 mm)
Ripple HART
47...125 Hz: Uss = 200 mV (at 500 W)
Ambient
temperature
-40 °F and +185 °F
(-40 °C and +85 °C)
For calibration to regulatory
standards: -25 °C ... +55 °C
(-30 °F…+140 °F)
With T
u
<-20 °C and T
u
>+60 °C the
operability of the LC-display is
reduced. A weather protection cover
should be used for outdoor operation
if the instrument is exposed to direct
sunlight.
Process pressure
limits
7530 RTG: 0…40 bar / 14.5…580 psi
(option 64 bar / 928 psi)
7531 RTG: 0…40 bar / 14.5…580 psi
7532 RTG: 0…25 bar / 14.5…362 psi
7533 RTG: 0…16 bar / 14.5…232 psi
Storage
Temperature
-40 °F and +176 °F
(-40 °C and +88 °C)
Climate class
DIN EN 60068-2-38 (test Z/AD)
Electromagnetic
compatibility (EMC)
Interference Emission to EN 61326,
Electrical Equipment Class B.
Interference Immunity to EN 61326,
Annex A (Industrial) and NAMUR
Recommendation NE 21 (EMC)
Use a screened cable for the
connection to the sensor.
Vibration Shock
DIN EN 60068-2-64 / IEC 68-2-64:
20…2000 Hz, 1 (m/s
2
)
2
/Hz
Horn antenna
-40 °C…+200 °C
-40 °F…+ 392 °F
Rod antenna
-40 °C…+150 °C
-40 °F…+ 302 °F
Planar
antenna
-40 °C…+150 °C
(-40 °F…+302 °F),
(-4 °F…+302 °F)
for FKM-seal
Parabolic
antenna
-40 °C…+200 °C
-40 °F…+ 392 °F
p [bar]
T[°C]-40
80
5
10
20
100 120 150
25