krohne OPTIWAVE 7400 Radar level transmitter
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NG # 006626-HW-KROHNE-026
Manufactured by:
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 type | Level transmitter |
| Product family name | OPTIWAVE |
| Product positioning | For agitated and corrosive liquids |
| Measurement variables | Distance, Level, Mass, Reflection, Volume |
| Measurement principle | Radar (FMCW) |
| Level measurement type | Continuous measurement |
| Contact to measured medium | No |
| Interface measurement | No |
| Redundancy | No |
| Measured media | Liquids, Slurries, Pastes |
| Measuring range (liquids) | 0…100 m/ 0…328 ft |
| Ambient temperature | -40…+80°C/ -40…+176°F |
| Measuring point | Pressurised 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
| Antenna | Polyetheretherketone (PEEK), Polytetrafluoroethylene (PTFE) |
| Gaskets | Ethylene propylene diene monomer (EPDM), Fluoroelastomer rubber (FKM/FPM), Kalrez® 6375 |
Process connections
| Flange connections | EN (1092-1): DN40…200 ASME (B 16.5): 1½…8″ JIS (B 2220): 40…200A |
| Pressure ratings | EN (1092-1): PN100 ASME (B 16.5): Cl 1500# JIS (B 2220): 10k |
| Thread connections | Male: G1½ 1½ NPT |
Approvals/Standards
| Certificates/Approvals Others | NACE, WHG, CRN / ASME B31.3 |
| Certificates/Approvals Ex | ATEX, cQPSus, IECEx, NEPSI, EAC Ex |
| Certificates/Approvals Marine | DNV, NK |
| Certificates/Approvals Safety | SIL 2/3 |
| Ingress protection | IP66/68, NEMA4X/6P |
| NAMUR compliance | NE 107, NE 21, NE 43, NE 53 |
Communication
| Analogue outputs | 4…20 mA |
| Digital outputs | FOUNDATION™ 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.