●Principle

KAIDI ultrasonic level meter company for transportation-1 The extremely narrow microwave pulse emitted by the antenna on radar level instrument can travel at the speed of light and part of its energy．which is reflected off the surface of target medium, is received by the very same antenna．The time lapse between pulse emission and reception by the antenna is proportional to the distance between the surface of target medium and the reference point on antenna．However。due to the fact that the electromagnetic wave is Transmitted at extremely high speed．which leads to the tiny time lapse (nanosecond level) and makes it difficult to be identified．GDRD5×series of radar level instrument have adopted a special demodulation technology．enabling itself to detect the time lapse between pulse emission and reception correctly, and eventually generate accurate measurement result．

●Features

The guided wave radar level instrument, adopted 26GHz as transmitting frequency, which make this series have specialties as below：Small beam angle, which centralize energy, make GDRD5X high ability of anti—jamming, hence high accuracy and reliable．Small antenna size, easy to mount and easy to equip extra dust protection Small blind zone, good accuracy even for small vessels．Shorter wave—length, suitable for small power．

Equipped with advanced microprocessor and unique Echo Discovery echo processing technology, the radar level instrument can be used under various hazardous process conditions.

The guided wave radar level instrument, with pulses as its working tool and extremely low emission power, can be mounted on various metal or nonmetal vessels, harmless towards the environment and human beings．

Model	KDZA55	KDZA56	KDZA88
Application	Liquid	Anti-temperature and anti-pressure, mildly erosive liquid	For solid and powder 5.6KGS DN100
Application	Adapt to highly erosive liquids	30m	50-70m
Range	10mm：30m(Horn 80mm)	+ 3mm	+ 3mm
Accuracy	+ 5mm	(-40 - 80) °C	(-40 - 80) °C
Process Temperature	(-40 - 130) °C	(-40 - 130) °C	(-40 - 130) °C
		(-60 - 250) °C	(-60 - 250) °C
		(-60 - 400) °C	(-60 - 400) °C
		Normal	Normal
Process Pressure	(-0.1 - 0.3)MPa	(-0.1 - 4)MPa	(-0.1 - 4)MPa
		(-0.1 - 40)MPa	(-0.1 - 40)MPa
		26GHZ	26GHZ
Frequency Range	26GHZ(4 - 20)mA／HART	(4 - 20)mA／HART	(4 - 20)mA／HART
Signal Output	Two-wire system (DC24V)	Two-wire system (DC24V)	Two-wire system (DC24V)
Power	4 wire system (DC24V/AC220V)	Four-wire system (DC24V/AC220V)	Four-wire system (DC24V/AC220V)
Power	Optional	Optional	Optional
Field Displaying	A／B／C／D (view page 4)	K/B/C/D1	K/B/C/D1
Process Connection	F	C／N／I／J／K2	C／N／I／J／K2
Flange Accessories	L	L／M／N／P3	L／M／N／P3
Antenna	R	S／T／V3	S／T／V3
Frequency Range	Liquid	Anti-temperature and anti- pressure, mildly erosive liquid	Anti-temperature and anti- pressure, mildly erosive liquid

Model	KDZA57	KDZA58	KDZA59
Application	liquid	solid	solid
Application	High corrosive, sanitary	Storage vessel, process vessel, Strong dust, easy to crystallize, condensation	Normal temperature, normal pressure
Max. Range	20m	70m	l 5m
Accuracy	+3mm	+1 5mm	+1 0mm
Temperature	(-40 - 150)°C	(-40 - 80)°C	(-40 - 80)°C
		(-40 - 1 20)°C	(-40 - 1 20)°C
		(-60 - 250)°C	(-60 - 250)°C
		(-60 - 400)°C
Process Pressure	(-0.1 - 0.5)MPa	normal pressure	normal pressure
		(-0.1 - 4)MPa	(-0.1 - 4)MPa
		(-0.1 - 40)MPa
Frequency Range	26GHZ	26GHZ	26GHZ
Signal Output：	(4 - 20)mA／HART	(4 - 20)mA／HART	(4 - 20)mA／HART
Power	2 Wires (DC24V)	2 Wires (DC24V)	2 Wires (DC24V)
Power	4 Wires (DC24V/AC220V)	4 Wires (DC24V/AC220V)	4 Wires (DC24V/AC220V)
Field Displaying	optional	optional	optional
Process Connection	A/B/C/D1	A/B/C/D1	A/B/C/D1(Page 4)
Flange Accessories		G/H/I/J/K3	G/H/I/J/K3
Antenna	U	L/M/N/P3	L/M/N/P3
Frequency Range		S/T/V/W3	S/T/V/W3

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