그린텍코리아주식회사
TDR 레이더 레벨미터
TDR Radar Level Meter
홈
TDR Radar Level meter
TDR Radar Level meter
RD183X series - Guided Wave
RD1831 / 1832 / 1833 / 1834 / 1835 / 1836
| 측정범위 | Max. 30m (Cable probe) / 6m (Rod · Coaxial probe) |
|---|---|
| 측정 정확도 | ±3mm (반복성 ±2mm / 분해능 1mm) |
| 빔 폭 측정 | TDR 접촉식 (빔각 해당없음) |
| 옵션 | - |
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RD183X series - Guided Wave 제품에 대해 궁금하신 점을 남겨주시면 담당자가 확인 후 이메일로 답변드립니다.
Low Frequency (1000MHz ~ 1.8GHz) · TDR 방식 · Max. 30m
가이드 웨이브 레이더 레벨 트랜스미터
RD1831 / 1832 / 1833 / 1834 / 1835 / 1836
Product Description
Working principle
- Guided Wave Radar Level Transmitter works on the principle of time and travel (TDR).
- Radar wave travels at the velocity of light. The flying time is converted into level signal via the electronic components.
- The probe emits high frequency wave pulse which travels along a cable probe or a rod probe.
- When the wave pulse reaches the medium surface, it will be reflected and received by the receiver, and then the distance signal will be converted into level signals.
Input / Output
- Input — The reflected wave pulse travels back along the cable and arrives at the electronic unit. The microprocessor will process the signals and recognize the returned waves from medium surface.
- The distance D from the medium surface is proportional to the travel time : D = C × T / 2 (C is velocity of light)
- Due to the empty tank distance is known, then the level L is : L = E − D
- Output — By setting the empty tank height E as zero point, the full tank height F as full range point and other practical parameters, the transmitter adapts to the measuring environment automatically, corresponding to output 4-20mA.
Measuring range
- F
- Measuring range
- E
- Distance of empty tank
- B
- Dead zone on the top
- K
- Min. distance between probe and tank wall
Dead zone at top refers to the min. distance between highest medium position and the measuring reference position. Dead zone at bottom refers to the distance which cannot be measured accurately nearby the bottom of the cable. The distance between the dead zone at top and the dead zone at bottom is the effective measuring distance.
Note : Level measurement in a tank can be effectively performed only when the medium level is within the top dead zone and the bottom dead zone.
Note : Level measurement in a tank can be effectively performed only when the medium level is within the top dead zone and the bottom dead zone.
적용
- RD1831 — Liquid, Solid, Powder
- RD1832 — Liquid
- RD1833 — 저유전율 액체 · 고체 · 분체
- RD1834 — 고온 고압 액체
- RD1835 — 부식성 액체
- RD1836 — 저유전율 액체, 표면 파동이 있는 액체
Introduction of Transmitter
RD1831Liquid · Solid · Powder
측정범위 : 30m
Process connection : Thread, Flange
Process temperature : -40°C … +250°C
Process pressure : -0.1~2MPa
Accuracy : ±3mm / Repeatability : ±2mm
Dead band : 300~500mm
Frequency : 1000MHz~1.8GHz
Ex ia IIC T6 · Ex d ia IIC T6 / IP67
Signal output : 4-20mA / HART (2-wire)
RD1832Liquid
측정범위 : 6m
Process connection : Thread, Flange
Process temperature : -40°C … +250°C
Process pressure : -0.1~2MPa
Accuracy : ±3mm / Repeatability : ±2mm
Dead band : 300~500mm
Frequency : 1000MHz~1.8GHz
Ex ia IIC T6 · Ex d ia IIC T6 / IP67
Signal output : 4-20mA / HART (2-wire)
RD1833저유전율 액체 · 고체 · 분체
측정범위 : 30m
Process connection : Flange
Process temperature : -40°C … +250°C
Process pressure : -0.1~2MPa
Accuracy : ±3mm / Repeatability : ±2mm
Dead band : 300~500mm
Frequency : 1000MHz~1.8GHz
Ex ia IIC T6 · Ex d ia IIC T6 / IP67
Signal output : 4-20mA / HART (2-wire)
RD1834고온 고압 액체
측정범위 : 6m
Process connection : Thread, Flange
Process temperature : -40°C … +400°C
Process pressure : -0.1~4MPa
Accuracy : ±3mm / Repeatability : ±2mm
Dead band : 500mm
Frequency : 1000MHz~1.8GHz
Ex ia IIC T6 · Ex d ia IIC T6 / IP67
Signal output : 4-20mA / HART (2-wire)
RD1835부식성 액체
측정범위 : 6m (rod probe) / 20m (cable probe)
Process connection : Flange
Process temperature : -40°C … +180°C
Process pressure : -0.1~2MPa
Accuracy : ±3mm / Repeatability : ±2mm
Dead band : 500mm
Frequency : 1000MHz~1.8GHz
Ex ia IIC T6 · Ex d ia IIC T6 / IP67
Signal output : 4-20mA / HART (2-wire)
RD1836저유전율 · 파동 표면 액체
측정범위 : 6m
Process connection : Thread, Flange
Process temperature : -40°C … +250°C
Process pressure : -0.1~2MPa
Accuracy : ±3mm / Repeatability : ±2mm
Dead band : 300~500mm
Frequency : 1000MHz~1.8GHz
Ex ia IIC T6 · Ex d ia IIC T6 / IP67
Signal output : 4-20mA / HART (2-wire)
주요 특징
- TDR (Time Domain Reflectometry) 방식의 접촉식 가이드 웨이브 레이더 — 프로브를 따라 전파가 진행하므로 저유전율 매체에도 안정적
- Cable probe 0~30m / Rod · Coaxial probe 0~6m 대응
- 정확도 ±3mm, 반복성 ±2mm, 분해능 1mm
- 에코 샘플링 55회/s, 응답시간 > 0.2s
- 2-wire 방식 — 전원 공급과 신호 출력을 2심 케이블 하나로 처리
- HART 프로토콜 통신 지원
- 방폭 Ex ia IIC T6 · Ex d ia IIC T6, 보호등급 IP67
- 공정 온도 최대 +400°C (RD1834), 공정 압력 최대 4MPa
Technical parameters
| Working frequency | 1000MHz ~ 1.8GHz |
|---|---|
| Measuring range | 0~30m (cable probe) / 0~6m (rod probe or coaxial probe) |
| Accuracy | ±3mm |
| Repeatability | ±2mm |
| Resolution | 1mm |
| Sample | Echo sampling 55 times / s |
| Responding time | > 0.2s (depends on the application) |
| Current signal output | 4~20mA |
| Communication | HART protocol |
| Process connection | Thread : G1” A or G1 1/2” A / Flange : DN50, DN80, DN100, DN150, DN200, DN250 |
| Power supply | 24V DC (±10%), ripple voltage : 1Vpp / 소비전력 Max. 22.5mA |
| Ambient temperature | -40 ~ +70°C |
| Tank pressure | (Gage pressure) -0.1 ~ 4MPa |
| Explosion proof | Ex ia IIC T6 |
| Enclosure protection | IP67 |
| 2-wire connection | Input and signal output share one 2-wire cable |
| Cable entry | M20*1.5 × 2 or 1/2” NPT × 2 (cable diameter 5~9mm) |
Reference table for RD183X series
| Model | Application | Dia. (mm) | Min. DK | Dead zone (m) | Solid powder (m) | Liquid (m) | Accuracy |
|---|---|---|---|---|---|---|---|
| RD1831 | Liquid | 4 | 2.5~3.0 | 0.3~0.5 | 15 | 3mm | |
| Solid | 6 | 2.5~3.0 | 0.3~0.5 | ≤10 | 3mm | ||
| Remark : For liquids and solid powders | |||||||
| RD1832 | Liquid | 10 | 2.5~3.0 | 0.3~0.5 | ≤6 | 3mm | |
| Remark : For liquids | |||||||
| RD1833 | Solid / Liquid | 6-Double | 2.5~3.0 | 0.3~0.5 | ≤10 | ≤15 | 3mm |
| Remark : For liquid or solid level powders | |||||||
| RD1834 | Liquid | 10 | 2.5~3.0 | 0.5 | 3 | 3mm | |
| RD1835 | Liquid | 7mm (Cable) | 10.0~20.0 | 0.5 | 3 | 3mm | |
| Liquid | 14mm (Rod) | 10.0~20.0 | 0.5 | 3 | 3mm | ||
| Remark : For corrosive liquids | |||||||
| RD1836 | Liquid | 25mm | 2.5~3.0 | 0.3~0.5 | 3 | 3mm | |
| Remark : For liquids with low dielectric constant or liquids with wavy surface | |||||||
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.
매질별 측정 범위 (Medium group)
| Group | DK (ε) | Solid particles | Liquid | Measuring range |
|---|---|---|---|---|
| 1 | 1.4~16 | Cold concentrate, e.g. N2CO2 | 3m (only for coaxial probe) | |
| 2 | 1.6~19 | Plastic particles, White lime, Special cement, Sugar | Liquefied gas (e.g. Propane Solvent), Freon12 / Freon Palm oil | 25m |
| 3 | 1.9~25 | Normal cement, Plaster | Mineral oil, fuel | 30m |
| 4 | 2.5~4 | Grain, Seeds, Stone sand | Benzene, Styrene, Toluene, Furan, Naphthalene | 30m |
| 5 | 4~7 | Moist stone, Mineral salt | Chlorobenzene, Chloroform, Cellulose spray, Isocyan, Hydrochloric acid, Aniline | 30m |
| 6 | > 7 | Metal powder, Carbon black, Coal | Liquid with water, Alcohol, Liquid ammonia | 30m |
Model selection — 공통 항목
아래 항목은 RD1831 ~ RD1836 전 모델에 공통 적용됩니다.
| 구분 | Code | 내용 |
|---|---|---|
| Explosion proof | P | Standard type (Non-explosion) |
| I | Intrinsically type (Ex ia IIC T6) | |
| D | Intrinsically and explosion proof type (Ex d ia IIC T6) | |
| Electronic unit | 2 | 4~20mA / 24V DC 2-wire |
| 3 | 4~20mA / 24V DC / HART 2-wire | |
| 4 | 4~20mA / 24V DC / HART 4-wire | |
| 5 | 4~20mA / 220V AC / HART 4-wire | |
| Housing / protection grade | L | Aluminum / IP67 |
| P | Plastic / IP65 | |
| Cable entry | M | M20x1.5 |
| N | 1/2” NPT | |
| Display | V | With |
| X | Without | |
| Measuring range | ( ) | ( ) m |
| 플랜지 규격 | ( ) | (A) ANSI150LB, FF / (J) JIS10K, FF / (D) DIN PN16, FF |
| Seal / process temp. | P | Common seal / -40~+120°C |
| G | High temperature sealed / -40~+250°C with radiation fins (RD1833 : -40~+150°C with heat sink / RD1834 : -40~+400°C) |
Model selection — 모델별 항목
| Model | Probe type / Max. range / Material | Transmitter · Probe | Process connection / material |
|---|---|---|---|
| RD1831 | Cable probe / 30,000mm / S.S, PTFE | A Liquid 4mm B Solid 6mm Y Others |
G1.5 Thread G1 1/2” M, SUS304 G1.0 Thread G1” M, SUS304 N1.5 Thread 1 1/2” NPT M N1.0 Thread 1” NPT M A~H ( ) DN50 / DN80 / DN100 / DN150 / DN200 / DN250 flange : SUS304 Y Others |
| RD1832 | Cable probe / 6,000mm / S.S, PTFE | A 6mm B 10mm Y Others |
RD1831과 동일 (Thread G1.5 · G1.0 · N1.5 · N1.0 / DN50~DN250 flange : SUS304 / Y) |
| RD1833 | Twin Cable probe / 30,000mm / S.S, PTFE | — | B~H ( ) DN80 / DN100 / DN150 / DN200 / DN250 flange : SUS304 Y Others |
| RD1834 | Cable probe / 6,000mm / S.S, Ceramic | A 6mm B 10mm Y Others |
G1.5 Thread G1 1/2” M, SUS304 N1.5 Thread 1 1/2” NPT M B~H ( ) DN80 ~ DN250 flange : SUS304 Y Others |
| RD1835 | Corrosion proof probe (rod or cable) / 6,000 · 20,000mm / S.S, PTFE | A 10mm B 14mm Y Others |
A~H ( ) DN50 ~ DN250 flange : SUS304 Y Others Seal : P (Common seal / -40~+120°C) 만 적용 |
| RD1836 | Coaxial tube probe / 6,000mm / S.S, PTFE | A 25mm B 50mm Y Others |
G1.0 Thread G1” M, SUS304 N1.0 Thread 1” NPT M A~H ( ) DN50 ~ DN250 flange : SUS304 Y Others |
This technical specification may be upgraded without prior notice.
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