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krohne OPTIWAVE 7400 Radar level transmitter

  • NG # 006626-HW-KROHNE-026

Manufactured by:

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The OPTIWAVE 7400 is a 2-wire 24 GHz radar (FMCW) level transmitter for liquids in harsh environments like tanks with agitators containing corrosive media. It is particularly designed for continuous, non-contact level measurement under extreme conditions prevalent in the chemical, petrochemical, power, metal or oil and gas industry. 

Specification

General information

Product typeLevel transmitter
Product family nameOPTIWAVE
Product positioningFor agitated and corrosive liquids
Measurement variablesDistance, Level, Mass, Reflection, Volume
Measurement principleRadar (FMCW)
Level measurement typeContinuous measurement
Contact to measured mediumNo
Interface measurementNo
RedundancyNo
Measured mediaLiquids, Slurries, Pastes
Measuring range (liquids)0…100 m/
0…328 ft
Ambient temperature-40…+80°C/
-40…+176°F
Measuring pointPressurised tank, Open tank, Stilling well

Operating conditions

Process pressure-1…100 barg/
-14.5…1450 psig
Process temperature-50…200°C/
-58…+390°F

Special version (on request):
Up to +700°C/+1292°F

Materials

AntennaPolyetheretherketone (PEEK), Polytetrafluoroethylene (PTFE)
GasketsEthylene propylene diene monomer (EPDM), Fluoroelastomer rubber (FKM/FPM), Kalrez® 6375

Process connections

Flange connectionsEN (1092-1): DN40…200
ASME (B 16.5): 1½…8″
JIS (B 2220): 40…200A
Pressure ratingsEN (1092-1): PN100
ASME (B 16.5): Cl 1500#
JIS (B 2220): 10k
Thread connectionsMale:
G1½
1½ NPT

Approvals/Standards

Certificates/Approvals OthersNACE, WHG, CRN / ASME B31.3
Certificates/Approvals ExATEX, cQPSus, IECEx, NEPSI, EAC Ex
Certificates/Approvals MarineDNV, NK
Certificates/Approvals SafetySIL 2/3
Ingress protectionIP66/68, NEMA4X/6P
NAMUR complianceNE 107, NE 21, NE 43, NE 53

Communication

Analogue outputs4…20 mA
Digital outputsFOUNDATION™ Fieldbus, HART®, Profibus-PA

Accuracy

Accuracy (liquids)±2 mm/
±0.08 in

Description

The device features Metallic Horn antennas as well as PTFE and PEEK Drop antennas for measuring distances up to 100 m / 328 ft. The Drop antennas are perfectly suited for aggressive liquids in tanks. In applications with toxic and dangerous products, this radar device can be equipped with a METAGLAS® second sealing barrier.