Page 365 - Bürkert

Radar Level Transmitter for Liquids

8137 / 8138 G thread or flange connection

• For filling level measurement
up to 30 m
• High Pressure Version
• Two-wire version Type 8137

• Adjustable via display and buttons as
well as PC-Tool with DTM
Type 8138

Radar level transmitter for aggressive media and high pressure. A sleek, Envelope Dimensions [mm] (see datasheet for details)
compact stainless steel design incorporates a 2-wire HART transmitter
which is easily PC configurable. Type 8137
Standards DN A B C
Technical Data DIN 2501 50 40 279 80.5
DIN 2501 100 75 395 80.5
Type 8137 8138 C
General data ANSI B16.5 2” 40 279 80.5
ANSI B16.5 4” 75 395 80.5
Housing / Cover PBT, Stainless steel 316L / PC
Seal ring / Ground NBR / Stainless steel 316Ti/316L (1.4571/1.4435)
terminal
®
Seal KLINGERSIL C-4400 (8137), EPDM (8138)
Antenna / cone Stainless steel 316L (8137),
TFM™ PTFE (8138) / PTFE (8137)
Seal (antenna system) FKM (8137), EPDM (8138)
Display LCD in full dot matrix*
Ambient temperature -40 ºC to +80 ºC
Voltage supply 2-wire, 14 to 36 V DC
Current consumption 22 mA
max.
Electrical connections Cable glands M20 x 1.5 B
Outputs 4-20 mA/HART
Dead zone 50 mm
Measuring range 50 mm to 10 m
(40 mm antenna)
Process temperature -40 °C to +130 °C -40 °C to +200 °C
Vessel pressure -1 to 40 bar -1 to 16 bar
(-100 to 4000 kPa) (-100 to 1600 kPa)
or according to flange
rules A
Vibration resistance Mechanical vibrations with 4 g and 5 to 100 Hz
Accuracy ± 3 mm
Min. dielectric er > 1.6
Temperature coefficient 0.03%/10K (Average temperature coefficient of the C
zero signal - temperature error)
Resolution max. 1 mm
Frequency K-band (26 GHZ technology)
Interval approx. 1 s B
Beam angle at 3 dB 22° (antenna with ø 40 18° (range 0.05 to 10 m)
mm) - 10° (range 0.05 to Type 8138
20 m) A B C
Adjustment time > 1 s (dependent on the parameter adjustment) 44 218 80.5
Accuracy ± 2 mm
Ingress protection IP66, IP67
* must be ordered separately.
A

364