コンタクタ,サーキットブレーカー,ソーラーインバーター,電気メーター,太陽電池
This is Honeywell SmartLine STD720 smart differential pressure transmitter with 100kPa measuring range. 316SSプロセスヘッドを採用 + 316L絞り, シリコンオイル充填, 1/4″ NPTFプロセス接続, HARTプロトコル, ローカルディスプレイ付き. 一般的な工業用差圧測定用途に最適.
- モデルセグメントの定義 (Full Breakdown)
| セグメント | コード | 説明 |
| シリーズID | ST700-STD720 | STD720: SmartLine differential pressure transmitter, range 100kPa, turndown ratio 100:1 |
| Process Wetted Material | E1 | E = Process head: 316 ステンレス鋼; 1 = Diaphragm: 316Lステンレス |
| 繋がり & Bolt | AC4 | A = Process connection: Standard 1/4″ NPTF internal thread; C = Bolt/Nut material: Carbon steel (galvanized); 4 = Vent/Drain: Dual-ended, standard vent at end position |
| Fill Fluid | 1 | 1 = DC庐200 Silicone Oil (standard fill fluid, temperature range -40~121掳C) |
| Mounting Option | あ | A = No mounting option (標準取付) |
| Static Pressure Grade & オプション | AHB | AH = Static pressure rating: 10MPa (1450psi); B = Option: With local display |
| 出力 & プロトコル | 11S | 11 = Output: 4-20ミリアンペア + HARTプロトコル; S = Safety certification: General safety approval |
| 画面 & 材料 | あ | A = Display type: Standard digital display; 材料: 標準構成 |
| Additional Option | 00A0 | 00 = No additional options; A0 = Standard configuration without special functions |
- コア仕様表
| パラメータのカテゴリ | 詳細仕様 | 備考 |
| 基本パラメータ | ||
| Measurement Type | Differential Pressure (DP) | STD720 specially designed for DP measurement |
| 範囲 | 0–100kPa (configurable down to 0–1kPa) | Turndown 100:1, 正確さ 0.05% Span |
| Static Pressure Rating | 10MPa (1450psi) | AH static pressure grade |
| Overpressure Capability | 1.5 × Max static pressure | Safety overpressure protection |
| 正確さ & 安定性 | ||
| 精度クラス | 0.05% Span | Includes linearity, hysteresis and repeatability |
| Temperature Effect | ±0.01% URL/°C | Full range temperature compensation |
| Long-term Stability | ±0.1% URL / 5 年 | High stability design |
| プロセス & アンビエント | ||
| Process Temperature | -40~121°C | Depends on fill fluid type |
| 周囲温度 | -40~85°C | Standard operating range |
| 侵入保護 | IP67 / NEMA 4X | 防塵・防水, 過酷な環境に適しています |
| Explosion-proof Certification | オプションのATEX / IECEx | Confirm by exact model |
| 電気的特性 | ||
| 供給電圧 | 12.2~35VDC | HART protocol requirement |
| 出力信号 | 4-20ミリアンペア + ハート 5.0/7.0 | Digital communication superimposed on analog signal |
| Load Resistance | 0~1000Ω | 標準構成 |
| 応答時間 | 0.1~60 seconds | Configurable via HART |
| 機械構造 | ||
| プロセス接続 | 1/4″ NPTF internal thread (dual side) | 標準構成 |
| Diaphragm Material | 316L Stainless Steel | Corrosion resistant for most industrial media |
| Process Head Material | 316 ステンレス鋼 | Matched with diaphragm material |
| Bolt Material | Carbon Steel (Galvanized) | 標準; 316SS optional |
| ハウジング材質 | Low-copper aluminum alloy with polyester powder coating | Lightweight and corrosion resistant |
- 付属品一覧 (標準 + オプション)
標準構成
- Transmitter Main Unit: Including sensor module, electronic module and housing
- Process Connection Gasket: Glass-filled PTFE (標準)
- 取付金具: Standard bracket for pipe or wall mounting
- 端子台: Built-in terminal, supports 2-wire connection
- 取扱説明書: インストール, commissioning and maintenance guidelines
- Calibration Certificate: Factory calibration record with traceable accuracy
Common Optional Accessories
| アクセサリの種類 | モデル / 説明 | 応用 |
| 通信モジュール | ハート / DE Protocol Module | Digital communication expansion |
| ディスプレイモジュール | Remote Display Unit | 高温 / hazardous area installation |
| Mounting Fittings | Flange adapter, pipe bracket | Special mounting requirements |
| Process Fittings | Reducer adapter, sealing parts | Different interface conversion |
| Protection Device | Rain cover, Explosion-proof junction box | Harsh environment protection |
| Calibration Tool | HART Handheld Communicator, Calibration Software | On-site calibration and configuration |
- 競合他社の代替 / ブランド間の比較
| ブランド | モデル | コアパラメータの比較 | Replaceability |
| ハネウェル | STD720-E1AC4AS-1-A-AHB-11S-A-00A0 | 100kPa, 0.05% 正確さ, 10MPa static pressure, ハート, 316L絞り | Original same-series replacement |
| ローズマウント(エマーソン) | 3051CD0A02A1AB1H2L4M5 | 100kPa, 0.075% 正確さ, 10.3MPa static pressure, ハート, 316L絞り | 高い (confirm mounting dimension) |
| Yokogawa | EJA110A-DLS4A-92DA | 100kPa, 0.075% 正確さ, 10MPa static pressure, ハート, 316L絞り | 高い (プロトコル互換性) |
| シーメンス | SITRANS P DS III | 100kPa, 0.075% 正確さ, 10MPa static pressure, ハート, 316L絞り | 中くらい (confirm turndown ratio) |
| ABB | 266DSH | 100kPa, 0.065% 正確さ, 10MPa static pressure, ハート, 316L絞り | 中くらい (mounting structure difference) |
置き換えのポイント:
- Match measuring range, accuracy grade and static pressure resistance
- Keep identical process connection type (NPTF / フランジ)
- Ensure compatibility of communication protocol (HART version)
- Mounting dimension and weight shall meet site requirements
- 選定ガイドライン & 代替ソリューション
Core Selection Factors
- 測定範囲: Confirm actual differential pressure; STD720 turndown 100:1 covers 0–1kPa ~ 0–100kPa
- Static Pressure Condition: System static pressure ≤10MPa (AH grade); higher pressure requires BH grade (20MPa)
- Media Property: Corrosive media requires Hastelloy C-276 or Monel diaphragm
- 温度範囲: Above 121°C select high-temperature silicone oil (DC®704) or fluorinated fill fluid
- 安全認証: Explosion hazardous area select matched ATEX/IECEx certified model
- Communication Requirement: Choose HART/DE for remote configuration and diagnosis
推奨代替機種
| アプリケーションシナリオ | 推奨モデル | アドバンテージ |
| Standard Industrial DP Measurement | STD720-E1AC4AS-1-A-AHB-11S-A-00A0 | 費用対効果の高い, fits most working conditions |
| Corrosive Media | STD720-E2HC4AS-1-A-AHB-11S-A-00A0 | Hastelloy C-276 diaphragm, resistant to strong acid & alkali |
| 高温 (>121キャプチャーC) | STD720-E1AC4AS-3-A-AHB-11S-A-00A0 | DC庐704 high-temp silicone oil, range -40~204C |
| High Static Pressure (>10MPa) | STD720-E1AC4AS-1-B-BHB-11S-A-00A0 | BH grade, withstand 20MPa system pressure |
| Wireless Communication | STD720-E1AC4AS-1-A-AHB-16S-A-00A0 | WirelessHART protocol, reduce wiring cost |
インストール & メンテナンスに関する推奨事項
- 取付位置: Avoid severe vibration and sharp temperature change; horizontal installation recommended
- プロセス接続: Ensure good sealing to avoid leakage affecting measurement accuracy
- 配線要件: Use shielded cable with single-end grounding to reduce EMI interference
- 校正サイクル: Annual calibration recommended; に短縮する 6 months under harsh conditions
- 故障診断: Read diagnostic data via HART communicator for fast troubleshooting
Honeywell STD720-E1AC4AS-1-A-AHB-11S-A-00A0 is a high-performance smart differential pressure transmitter. Featuring 0.05% high accuracy and 100:1 wide turndown ratio, it is widely applied in flow, liquid level and pressure measurement for chemical, petroleum, power and other industries. Modular design and rich optional configurations meet customized demands of various working conditions. 選択中, focus on measuring range, static pressure, media characteristics and safety certification to match site operating conditions.
Applicable Industries & Applications for Honeywell ST700-STD720-E1AC4AS-1-A-AHB-11S-A-00A0
This model is a general industrial differential pressure transmitter with standard 316L diaphragm, regular silicone oil filling, HART protocol and general explosion-proof design. It is suitable for neutral, weakly corrosive, normal temperature and pressure working conditions.
Main Applicable Industries
- 石油化学 / Coal Chemical
Tank liquid level, distillation column differential pressure, orifice/Venturi DP flow, process pipeline differential pressure, filter blockage monitoring.
- Thermal Power / Cogeneration / Self-owned Power Plant
Boiler drum liquid level, duct/flue wind differential pressure, circulating water/desalted water flow, flue gas filter DP interlock.
- 水処理 & Environmental Engineering
Municipal water supply & 排水, industrial wastewater, pure water/ultra-pure water system; tank level, membrane system inlet-outlet DP, sewage pipeline flow, grid filter differential pressure.
- 冶金 & 鋼鉄 / Non-ferrous Metal
Blast furnace duct negative pressure, dust removal pipeline DP, circulating cooling water flow, silo/tank level DP measurement.
- 医薬品 / Bioengineering
Purified water flow, fermenter liquid level, precision filter inlet-outlet DP; 316L material fits sanitary process conditions.
- 空調設備 & ビルディングオートメーション
Industrial plant & commercial complex; air conditioning supply/return water differential pressure, duct wind pressure, unit filter blockage DP alarm.
- Cement Building Materials / Glass & Ceramics
Kiln wind pressure DP, dust bag differential pressure, silo DP level measurement, cooling water system monitoring.
- 食べ物 & 飲料 / パルプ & 紙
Brewing, 飲み物, paper industry; slurry level, process water circulation DP, pipeline DP flow measurement.
- City Gas / Energy Regulating Station
Gas pipeline DP flow, regulator inlet-outlet differential pressure, pipe network pressure monitoring.
- マイニング & Coal Preparation / Industrial Mines
Coal washing tank level, slurry pipeline DP, dust removal negative pressure monitoring, process water flow measurement.
General Measurement Scenarios (All Industries)
Liquid level measurement for closed / open tanks
Differential pressure flow measurement via orifice, nozzle and Venturi tube
Micro differential pressure / pressure monitoring for pipelines, air ducts and flues
Blockage DP alarm and interlock for filters, dust bags and filter cartridges
Inapplicable Working Conditions
Not suitable for strongly corrosive media (concentrated acid, strong alkali, 塩素), medium temperature＞121°C, system static pressure＞10MPa. Special diaphragm, high-temperature fill fluid or high static pressure version is required instead.
