Kaidi KD902T 26G Radar Level Meter "Anti-corrosion Type

PRODUCT OVERVIEW

kaidi KD series sensors are 26G high frequency radar type level measuring instruments with a measuring distance of up to 80 meters. The antenna is further optimized and the new fast microprocessor allows for higher speed signal analysis and processing, making the instrument available for measurement of a variety of highly corrosive liquids.

THE PRODUCT PRINCIPLE

The radar level antenna emits narrow microwave pulses, which are transmitted downward by the antenna. Microwave contact with the measured medium surface is reflected back again by the antenna system, the signal will be transmitted to the electronic circuit part automatically converted into a level signal (because the microwave propagation speed is very fast, electromagnetic waves to reach the target and return to the receiver by the reflection of the time used in this round trip is almost instantaneous).

                                                                                                                                               A: range setting, B: low level adjustment, C: high level adjustment, D: blind range

The reference surface for measurement is: the bottom surface of the thread or the sealing surface of the flange.

Note: When using the radar level meter, make sure that the highest material level cannot enter the measurement blind zone (the area shown in D in the figure).

PRODUCT FEATURES

● Small antenna size for easy installation; non-contact radar, no wear and tear, no contamination.

● Virtually unaffected by corrosion, foam; virtually unaffected by water vapor, temperature and pressure changes in the atmosphere.

● Severe dusty environment has little effect on the work of high frequency level meter.

● Shorter wavelength, better reflection on inclined solid surfaces.

● Smaller beam angle and concentrated energy, which enhances the return capability and helps to avoid interfering objects at the same time.

● Smaller measurement blind spot, and good results for small tank measurements.

● High signal-to-noise ratio for better performance even under fluctuating conditions.

● High frequency, a better choice for measuring solids and low dielectric constant media

PRODUCT SPECIFICATION

Applications: corrosive liquids, vapors, volatile liquids

Measuring range: 20 meters

Process connection: Flange

Process temperature：-40～130℃( standard type ) / -40～250℃( high temperature type )

Process pressure: -0.1～2.0MPa

Accuracy：±3mm

Protection level: IP67

Frequency range: 26GHz

Power supply: two-wire (DC24V) / four-wire (DC24V/AC220V )

Explosion-proof grade: Exia ⅡC T6 Ga / Exd IIC T6 Gb

Housing: Aluminum single cavity / Aluminum double cavity / Plastic / Stainless steel single cavity

Signal output: 4.... .20mA HART ( two wire / four wire ) RS485 Mod bus

APPEARANCE OF SIZE

TECHNICAL PARAMETERS

Process connection Thread G1½"A / Thread 1½"NPT / Flange

Antenna profile Stainless steel / PTFE

Housing Seal between housing and housing cover Silicone rubber

Housing sight glass Polycarbonate

Grounding terminal Stainless steel

Supply voltage Two-wire standard (16 to 26) V DC

Intrinsically safe (21. 6 to 26. 4) V DC

Power consumption max 22. 5mA / 1W

Allowable ripple

Explosion-proof type - <100Hz Uss < lV

- (100 to 100K) Hz Uss < l0mV

(22. 8 to 26. 4) V DC Two-wire system

(198 to 242) V AC four-wire / 110V AC four-wire

Cable parameters Cable inlet/plug 1 M20xl.5 cable inlet

1 blind plug M20xl.5

Terminal Wire cross section 2.5 mm²

Output parameters Output signal (4 to 2 0) mA

Communication protocol HART

Resolution 1. 6 μA

Fault signal Current output constant

20. 5mA

22mA.

3.9mA

Integration time (0 to 36)s, adjustable

Blind area End of antenna

Microwave Frequency 26GHz

Communication interface HART communication protocol

Measurement interval Approx. 1 second (depending on parameter settings)

Adjustment time approx. 1 second (depending on parameter setting)

Display resolution 1mm

Operating storage and transport temperature (-40 to 100) °C

Relative humidity ˂95%

Pressure Max. 4MPa

Shock resistance Mechanical vibration l0m/s² , (10～150)Hz

INSTALLATION REQUIREMENTS