Burkert – Type 8138 – Radar Level Meter for Hygienic Applications

Radar level meter for hygienic applications

Type 8138 is a non-contact radar level meter for continuous level measurement.

It is particularly suitable for use in small vessels that contain beverage liquids under hygienic process conditions.

type 8138

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General Technical Data

Product properties
Materials	Please make sure the device materials are compatible with the fluid you are using. Detailed information can be found in chapter “3.1. Chemical Resistance Chart – Bürkert resistApp” on page 5.
Non wetted parts
Housing	PBT, stainless steel 316L (1.4404)
Cover	PC transparent
Seal between housing and housing cover	EPDM
Cable gland	PA
Blind plug	PA
Ground terminal	Stainless steel 316Ti/316L (1.4571/1.4435)
Wetted parts
Process connection	Stainless steel 316L
Process seal	EPDM
Antenna	TFM-PTFE
Dimensions	Detailed information can be found in chapter “4. Dimensions” on page 6.
Weights	3.5…15.5 kg (depending on process connection and antenna)
Measuring variable	Distance between the end of the level meter antenna and the product surface. Detailed information can be found in chapters “5.1. Measurement deviation diagram” on page 9 and “6.1. Measuring principle” on page 9.
Measuring range	Max. 35 m Recommended measuring range: • 0.05…15 m (clamp 2″, DN 25 connection or flange DN 50 version) • 0.05…35 m (flange DN 100)
Beam angle1.)	• 18° (clamp 2″, DN 25 connection or flange DN 50 version) • 10° (flange DN 100)
Damping (63 % of the input value)	0…999 s, adjustable
Step response time2.)	≤ 3 s
Product accessories Display	LCD in full dot matrix (optional, must be ordered separately). Detailed information can be found in chapter “7.4. Ordering chart accessories” on page 12.
Performance data
Measurement deviation	± 2 mm (measuring distance > 0.5 m) Detailed information can be found in chapter “5.1. Measurement deviation diagram” on page 9.
Measuring range resolution	1 mm
Measuring frequency	K-Band (26 GHz technology)
Measuring cycle time2.)	Approx. 450 ms
Temperature drift	• Digital output: ± 3 mm/10 K, max. 10 mm • Current output: < 0.03 %/10K relating to the 16 mA span or ≤ 0.3 %
Repeatability4.)	≤ 1 mm
Vibration resistance	4 g with 5…200 Hz according to EN 60068-2-6 (vibration at resonance)
Shock resistance	100 g, 6 ms according to EN 60068-2-27 (mechanical shock)
Electrical data
Operating voltage (Un)	• Without display/configuration module: – 9.6…35 V DC – 9.6…30 V DC (Ex ia instrument) • With display/configuration module: – 16…35 V DC – 16…30 V DC (Ex ia instrument)
Power Source (not supplied)	Limited power source according to UL/EN 60950-1 standards or limited energy circuit according to UL/EN 61010-1 §9.4
Starting current	≤ 3.6 mA; ≤ 10 mA for 5 ms after switching on
DC reverse polarity protection	Yes
Output signal	4…20 mA/HART
Signal resolution	0.3 µA
Range of the output signal	3.8…20.5 mA/HART (default setting)
Load resistor	(Un – Umin.)/0.022 A
Fault signal	Current output: mA value unchanged, 20.5 mA, 22 mA or < 3.6 mA (adjustable)
Max. output current	22 mA
Residual ripple (at DC)	• For 9.6 V < Un < 18 V: ≤ 0.7 Veff (16…400 Hz) • For 18 V < Un < 35 V: ≤ 1.0 Veff (16…400 Hz)
Voltage supply cable	• Cable diameter: 5…9 mm • Wire cross-section (spring-loaded terminals): – massive wire, stranded wire: 0.2…2.5 mm2 (AWG 24…14) – stranded wire with end sleeve: 0.2…1.5 mm2 (AWG 24…16)
Media data
Process temperature	• With Clamp, flange connection: – 40 °C…+ 200 °C (- 40 °F…392 °F) • With DN 25 connection:- 40 °C…+ 130 °C (- 40 °F…266 °F)
Process pressure	• With Clamp connection: – 1…16 bar (- 14.51…232.16 PSI/- 100…1600 kPa) • With DN 25 connection: – 1…10 bar (- 14.51…145.1 PSI/- 100…1000 kPa) • With flange connection: according to flange rules
Process/Port connection & communication
Process connection	• Clamp 2″ • DN 25 connection adapted for GEA Tuchenhagen VARINLINE process connections • Flange DN 50, DN 100 DIN 2501
Electrical connection	Cable glands M20 x 1.5
Approvals and Certificates
Standards Degree of protection according to  IEC/EN 60529	IP66/IP67 with M20 x 1.5 gland mounted and tightened
Overvoltage category according to IEC 61010-1	Category III
Protection class according to IEC 61010-1	Class III
Directives
CE directives	The applied standards, which verify conformity with the EU Directives, can be found on the EU Type Examination Certificate and/or the EU Declaration of conformity (if applicable)
NAMUR recommendations	NE21- Electromagnetic compatibility of equipment NE43 – Signal level for fault information from measuring transducers NE53 – Compatibility of field devices and display/adjustment components NE107 – Self-monitoring and diagnosis of field devices
Approvals
ATEX	EN 60079-0, EN 60079-11, EN 60079-26 Detailed information can be found in chapter “2.1. ATEX-Certification” on page 5.
Environment and installation
Ambient temperature	Operation and storage: – 40 °C…+ 80 °C (- 40 °F…+ 176 °F)
Relative air humidity	20…85 %, without condensation
Height above sea level	By default: max. 2000 m With connected overvoltage protection: max. 5000 m
Pollution degree	Degree 4 (when used with fulfilled housing protection)

*For selecting thecorrect product please refer to the technical data, images and notes for proper use according to the data sheet, or contact Flu-Tech directly.

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