홈 TDR Radar Level meter

TDR Radar Level meter

RD269X series

RD2691 / 2692 / 2692W / 2693 / 2693W / 2694 / 2695 / 2695S??DS / 2696

RD269X series 기본 사양
측정범위	Max. 70m (모델별 20 ~ 70m)
측정 정확도	±2mm ~ ±15mm (모델별)
빔 폭 측정	4° ~ 20° (안테나 규격별)
옵션	-

Intelligent Radar Level Transmitter RD269X series

High Frequency (26GHz) · Non-contact · Max. 70m

비접촉식 고주파 레이더 레벨 트랜스미터

RD2691 / 2692 / 2692W / 2693 / 2693W / 2694 / 2695 / 2695S · DS / 2696

Product Description

RD2690 series transmitters are 26GHz High-Frequency Radar Level Transmitters with analog signals 4-20mA, the Max. measuring distance is up to 70m. The antenna has been further optimized, and the latest update microprocessor can make higher speed signals analysis, which enables the level transmitters can be used in very complicated measuring applications such as reaction kettle or solid bunker.

Working principle

The radar level transmitter antenna emits narrower micro wave pulses which will be transmitted via the antenna. The micro wave will be reflected back after touching the surface of a medium, then antenna system will receive it and transmit it into the electrical circuit, which will be automatically turned into the level signals.

ASetting measuring range

BLow level adjustment

CHigh level adjustment

DDead zone

RD269X 측정 기준 도해 - A 측정범위, B 최저레벨, C 최고레벨, D 불감대 — Measuring reference — 나사 하단면 또는 플랜지 실링면 기준

Note : when using the radar level transmitter, must keep the highest level of medium out of the dead zone (see area D shown in the drawing).

적용

RD2691 — All aggressive liquids
RD2692 — 고온 · 고압 · 경부식 액체
RD2692W / RD2693W — 호수 · 저수지 · 하천 · 개수로 · 해수면 수위
RD2693 / RD2694 — 고체 · 분진 · 결정화 · 응축 환경
RD2695 — 액체, 고체 입자 및 벌크
RD2695S / DS — 강산 · 강알칼리 · 강부식성 액체
RD2696 — 위생용 액체 저장 용기, 고부식 용기

Introduction of Transmitter

RD2691All aggressive liquids

측정범위 (Max.) : 20m
Process connection : Thread, Flange
Process temperature : -60°C … +120°C
Process pressure : -0.1~0.3MPa
Accuracy : ±3mm / Repeatability : ±1mm
Frequency : 26GHz / Ex ia IIC T6 / IP67
Signal output : 4-20mA / HART (2-wire / 4-wire), RS485 / Modbus

RD2692고온 · 고압 · 경부식 액체

측정범위 (Max.) : 30m
Process connection : Thread, Flange
Process temperature : -60°C … +250°C
Process pressure : -0.1~4.0MPa
Accuracy : ±2~5mm / Repeatability : ±1mm
Frequency : 26GHz / Ex ia IIC T6 / IP67
Signal output : 4-20mA / HART (2-wire / 4-wire), RS485 / Modbus

RD2692W호수 · 저수지 · 하천 · 개수로 · 해수면

측정범위 (Max.) : 30m
Process connection : Thread, Flange
Process temperature : -40°C … +100°C
Process pressure : ATM
Accuracy : ±3mm
Frequency : 26GHz
Signal output : RS485 / Modbus / Power : 6~24V DC

RD2693고체 · 분진 · 결정화 · 응축

측정범위 (Max.) : 70m
Process connection : Thread, Flange
Process temperature : -60°C … +250°C
Process pressure : ATM or -0.1~0.3MPa
Accuracy : ±15mm / Repeatability : ±2mm
Frequency : 26GHz / Ex ia IIC T6 / IP67
Signal output : 4-20mA / HART (2-wire / 4-wire), RS485 / Modbus

RD2693W호수 · 저수지 · 하천 · 개수로 · 해수면

측정범위 (Max.) : 70m
Process connection : Thread, Flange
Process temperature : -40°C … +100°C
Process pressure : ATM
Accuracy : ±10mm
Frequency : 26GHz
Signal output : RS485 / Modbus / Power : 6~24V DC

RD2694고체 · 중분진 · 결정화 · 응축

RD2695액체 · 고체 입자 및 벌크

측정범위 (Max.) : 35m
Process connection : Thread, Flange
Process temperature : -60°C … +250°C
Process pressure : ATM or -0.1~4.0MPa
Accuracy : ±3mm (liquids), ±10mm (solids) / Repeatability : ±1mm
Frequency : 26GHz / Ex ia IIC T6 / IP67
Signal output : 4-20mA / HART (2-wire / 4-wire), RS485 / Modbus

RD2695S / DS강산 · 강알칼리 · 강부식성 액체

RD2695S : 강산·강알칼리·강부식성 액체, 증기가 많은 액체
RD2695DS : 부식 환경의 강부식성 액체 탱크

측정범위 (Max.) : 35m
Process connection : Flange
Process temperature : -60°C … +150°C
Process pressure : -0.1~1.0MPa
Accuracy : ±3mm
Frequency : 26GHz / Ex ia IIC T6 / IP67
Signal output : 4-20mA / HART (2-wire / 4-wire), RS485 / Modbus

RD2696위생용 액체 저장 용기 · 고부식 용기

측정범위 (Max.) : 20m
Process connection : Flange
Process temperature : -60°C … +150°C
Process pressure : ATM or -0.1~0.3MPa
Accuracy : ±2mm / Repeatability : ±1mm
Frequency : 26GHz / Ex ia IIC T6 / IP67
Signal output : 4-20mA / HART (2-wire / 4-wire), RS485 / Modbus

Dimension / Transmitter Linearity

RD269X Transmitter Linearity - RD2691, RD2692, RD2693, RD2694 프로브 길이별 빔 각도 및 직선성 — Transmitter Linearity — RD2691 / 2692 / 2693 / 2694

RD269X Transmitter Linearity - RD2695, RD2696 프로브 길이별 빔 각도 및 직선성 — Transmitter Linearity — RD2695 / 2696

Features

The radar level transmitter adapts the emitting frequency of 26GHz, therefore it has the following features :

Noncontact measuring, no abrasion, no contamination
Easy installation due to small size of antenna
Shorter wave length, which can get better reflect for the inclined solid surface
Smaller measuring dead zone, which can get better measuring result for small tanks
Smaller beam angle, which makes the energy be more concentrated, enhancing the wave reflect ability which can keep signals more powerful to avoid obstacles
Almost unaffected by corrosion and foams
Almost unaffected by changes of steam, temperature and pressure in the air
Even in heavy dust environment, the transmitter can also receive the real level return wave
High SNR, which can make the instrument get better performance
Frequency 26GHz is the best option for measuring solid and low dielectric constant medium

Reference table for RD269X series

Model	Application	Dia. (mm)	Length (mm)	Min. DK	Dead zone (m)	Solid bulk (m)	Solid powder (m)	Liquid (m)	Accuracy	Full beam angle
RD2691	Liquid	45	138	2.5~3.0	0.5			5	3mm	20°
Remark : Suggested to be used for corrosive liquid with range longer than 2m
RD2692	Liquid	46	120	2.5~3.0	0.5			5	2-3mm	18°
	Liquid	76	227	2.5~3.0	0.5			10	2-3mm	12°
	Liquid	96	288	2.5~3.0	0.5			15	2-3mm	8°
	Liquid	121	620	2.5~3.0	0.5			30	2-3mm	6°
Remark : Suggested to be used for common liquid with high temperature, high pressure, and light corrosion
RD2693	Solid / Liquid	76	227	2.5~3.0	0.8	10	10		15mm	12°
	Solid / Liquid	96	288	2.5~3.0	1	20	20		15mm	8°
	Solid / Liquid	121	620	2.5~3.0	1	35	30		15mm	6°
Remark : Suggested to be used for solid particles or bulks with heavy dust, easy crystallizing, and material
RD2694	Solid	196	136	2.5~3.0	1	45	40		15mm	4°
RD2694	Solid	242	136	2.5~3.0	1	70	65		15mm	4°
Remark : Suggested to be used for solid particles or bulks with heavy dust, easy crystallizing, and material
RD2695	Solid / Liquid	76	227	2.5~3.0	0.5	8	8	10	5mm	12°
	Solid / Liquid	96	288	2.5~3.0	0.8	13	13	15	5mm	8°
	Solid / Liquid	121	620	2.5~3.0	1	15	15	20	5mm	6°
Remark : Suggested to be used for solid particles or bulks
RD2696	Liquid	48	120	2.5~3.0	0.5			5	3mm	18°
	Liquid	76	227	2.5~3.0	0.5			10	3mm	12°
	Liquid	96	288	2.5~3.0	0.6			15	3mm	8°
Remark : Be suitable for hygienic tanks or tanks with strong corrosive liquids

Note : Dielectric constant of the medium has to be considered for model selection. The bigger the dielectric constant is, the longer the range could be.
The above accuracy and dead band will be changed by measuring range and process condition.