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| Segment de code | Signification | Remarques |
| DPSN | Code de série de produits | Honeywell Air Differential Pressure Switch série |
| 250 | Range identifier | The actual standard model is 200 (20~200Pa); 250 is likely a typo |
| UN | Version code | Version standard, pas de fonctions spéciales |
| HONEYWELL | Marque | Honeywell (NOUS. industrial automation giant) |
- Paramètres de spécification de base
Paramètres de base
| Paramètre | Valeur | Description |
| Type de produit | Air Differential Pressure Switch | Used for monitoring duct filters, fan operation and airflow status |
| Plage de pression | 20~200 Pa | Standard DPSN200A adjustable range |
| Switch Differential Pressure | 10 Pa (average) | Pressure difference between actuation and reset |
| Pression de service maximale | 10,000 Pa (10 kPa) | Ultimate withstand pressure |
| Précision | ≤±15% | Measurement accuracy |
| Measured Medium | Air, non-flammable and non-corrosive gas | Not applicable for other media |
Paramètres électriques
| Paramètre | Valeur | Description |
| Switch Rating | 1.5 UN (0.4 UN)/250 ACC | Rated electrical load capacity |
| Connexion électrique | AMP connector or screw terminal | Two optional connection methods |
| Protection contre la pénétration | IP54 | Dustproof and splashproof, adapté aux environnements industriels |
| Attestation | CE | Compliant with European safety standards |
Mécanique & Paramètres environnementaux
| Paramètre | Valeur | Description |
| Pressure Port Connection | 2 plastic tubes, 6 mm diamètre | For connecting pressure sampling tubes |
| Cable Gland Size | CM = M20 × 1.5 | Cable interface dimension |
| Diaphragm Material | Silicone | Sensing element material |
| Durée de vie mécanique | >1,000,000 cycles | High durability |
| Température de fonctionnement | -20℃ to 85℃ | Large plage de température |
| Température de stockage | -40℃ to 85℃ | Storage ambient condition |
| Dimension globale | Ø85.5 mm × 107 mm | Round structure for easy installation |
| Trous de montage | 4-ϕ3.6 mm | Fixing mounting holes |
- Liste des accessoires
| Nom de l'accessoire | Quantité | But |
| PVC Pressure Hose | 2 mètres | Connect differential pressure switch to air duct |
| Pressure Sampling Tube | 2 pièces | Connect pressure ports |
| Vis de montage | 5 pièces | Fix mounting bracket and main unit |
| L-type Mounting Bracket | 1 ordinateur | Support multiple installation angles |
| Manuel d'installation | 1 copie | Guide correct installation and commissioning |
- Concurrent & Cross-Brand Replacement Comparison
| Marque | Modèle | Différence principale | Scénario d'application |
| Honeywell | DPSN200A (Modèle standard) | Original authentique, ±15% accuracy, Protection IP54 | All applications requiring DPSN250A |
| Honeywell | DPS200 | Same series standard type, slight structural difference | General air duct monitoring |
| Contrôles Johnson | P74JA-1 | Pressure range 15~200Pa, ±10% accuracy | HVAC systems with high precision requirements |
| Siemens | QBM81-3 | Adjustable range 0~500Pa, IP54 | Matching Siemens building automation systems |
| Schneider Électrique | A9F72200 | 20~200Pa range with LED indicator | Applications requiring status visualization |
- Lignes directrices de sélection & Solutions de remplacement
- Paramètres de sélection clés
Confirm Pressure Range: Select according to actual duct differential pressure (20~200Pa for general filter monitoring)
Electrical Load Matching: Ensure switch rating meets control loop current requirement (≤1.5A/250VAC)
Environnement d'installation: IP54 suitable for non-humid industrial environments; additional protection required for outdoor use
Méthode de connexion: Choose AMP connector or screw terminal based on site wiring requirements
- Solutions de remplacement recommandées
Remplacement direct du fabricant d'origine: Prioritize DPSN200A (modèle standard) to avoid model confusion
Range Expansion: For higher pressure requirements, select DPSN400A (40~400Pa) or DPSN1000A (200~1000Pa)
Function Upgrade: Choose alternative models with LED status indicator for convenient on-site diagnosis
Alternative rentable: Domestic brands such as Chint and Delixi, price about 1/3~1/2 of OEM, performance meets general applications
- Précautions d'installation
- Vertical mounting is standard; range value increases by 20Pa when mounted horizontally
- Avoid bending pressure sampling tubes; maximum length no more than 2 mètres
- Connect pressure port +P1 to high-pressure side, -P2 to low-pressure side
- Electrical wiring shall comply with safety regulations to prevent short circuit
Honeywell Air Differential Pressure Switch Model List & Guide de sélection
- Présentation de la série de produits
Honeywell air differential pressure switches are mainly divided into 4 série de base, covering general HVAC to heavy-duty industrial applications. All feature high reliability, long service life and IP54 ingress protection, suitable for duct filter monitoring, fan status detection and airflow control.
| Série | Positionnement | Caractéristiques structurelles | Applications typiques |
| DPS Series | General Air Differential Pressure Switch | Standard round design, manually adjustable | Commercial building HVAC, filter monitoring |
| DPSN Series | Economy Air Differential Pressure Switch | Conception simplifiée, cost optimized | Ordinary ventilation systems, basic filter monitoring |
| DPSP Series | High Precision Air Differential Pressure Switch | Precision adjustment, low hysteresis | Clean rooms, laboratories, medical facilities |
| AFS Series | Airflow Proof Switch | Used with sampling tubes, measures positive/negative pressure | Fire smoke exhaust system, damper status monitoring |
- Detailed Model List by Series
- DPS Series (Standard Air Differential Pressure Switch)
Fonctionnalités principales: Manually adjustable setpoint with Pa scale dial, 180° rotatable pipe inlet, Certifié CE, Protection IP54
| Modèle | Plage de pression (Pa) | Différentiel de commutation (Pa) | Pression de service maximale (Pa) | Scénario d'application |
| DPS 200 | 20~200 | 10 | 10,000 | General filter, small fan |
| DPS 400 | 40~400 | 20 | 10,000 | Medium filter, fan status |
| DPS 1000 | 200~1000 | 50 | 10,000 | Large air duct, high wind speed system |
| DPS 2500 | 500~2500 | 150 | 10,000 | High differential pressure system, industrial ventilation |
| DPS 200A | 20~200 | 10 | 10,000 | Standard type with AMP connector |
| DPS 400A | 40~400 | 20 | 10,000 | Standard type with AMP connector |
| DPS 1000A | 200~1000 | 50 | 10,000 | Standard type with AMP connector |
| DPS 2500A | 500~2500 | 150 | 10,000 | Standard type with AMP connector |
- DPSN Series (Economy Air Differential Pressure Switch)
Fonctionnalités principales: Simplified structure, rentable, manual adjustment and IP54 protection, ideal for budget-sensitive projects
| Modèle | Plage de pression (Pa) | Différentiel de commutation (Pa) | Connexion électrique | Remarques |
| DPSN 200A | 20~200 | 10 | AMP / Borne à vis | Most common model, replaces DPSN250A |
| DPSN 400A | 40~400 | 20 | AMP / Borne à vis | Medium system application |
| DPSN 1000A | 200~1000 | 50 | AMP / Borne à vis | Large air duct monitoring |
| DPSN 2500A | 500~2500 | 150 | AMP / Borne à vis | High differential pressure industrial use |
- DPSP Series (High Precision Air Differential Pressure Switch)
Fonctionnalités principales: Une plus grande précision (≤±10%), lower switch differential pressure, suitable for strict pressure control scenarios
| Modèle | Plage de pression (Pa) | Précision | Différentiel de commutation (Pa) | Scénario d'application |
| DPSP 100 | 10~100 | ≤±10% | 5 | Clean rooms, laboratories |
| DPSP 200 | 20~200 | ≤±10% | 8 | Medical facilities, precision air conditioning |
| DPSP 500 | 50~500 | ≤±10% | 15 | Pharmaceutical industry, electronic workshops |
- AFS Series (Airflow Proof Switch)
Fonctionnalités principales: Detects positive / negative / differential pressure; used with sampling tubes for fire protection and energy management systems
| Modèle | Plage de pression (Pa) | Mode de réinitialisation | Application Features |
| AFS 100 | 25~100 | Manuel / Auto | Damper status monitoring |
| AFS 200 | 50~200 | Manuel / Auto | Fire smoke exhaust system |
| AFS 500 | 100~500 | Manuel / Auto | Airflow proof for large ventilation systems |
- Série d'applications spéciales
DPSL Series: Liquide & Gas dual-purpose differential pressure switch, suitable for neutral / slightly corrosive liquids and non-flammable gases, can be used as flow switch
| Modèle | Plage de pression | Medium Type | Protection contre la pénétration |
| DPSL 06 | 0.2~6 bar | Liquide / Gas | IP65 |
| DPSL 16 | 0.5~16 bar | Liquide / Gas | IP65 |
| DPSL 40 | 1~40 bars | Liquide / Gas | IP65 |
- Explication de la règle de dénomination du modèle
Honeywell air differential pressure switch model consists of Series Code + Gamme + Version Code, reflétant clairement les paramètres fondamentaux:
| Segment de code | Signification | Exemple |
| DPS/DPSN/DPSP/AFS | Code de série | DPS=Standard, DPSN=Economy, DPSP=High Precision, AFS=Airflow Proof |
| 200/400/1000/2500 | Range identifier | 200=20~200Pa, 400=40~400Pa, 1000=200~1000Pa, 2500=500~2500Pa |
| UN | Version code | Standard version with AMP connector, screw terminal optional |
| Numeric Suffix | Fonction spéciale | par exemple. 06 in DPSL 06 means max 6 bar range |
- Core Specification Comparison Table
Paramètres électriques généraux (Toutes les séries)
| Paramètre | Valeur | Description |
| Switch Rating | 1.5 UN (0.4 UN)/250 ACC | Rated electrical load capacity |
| Connexion électrique | AMP connector or screw terminal | Two optional connection methods |
| Protection contre la pénétration | IP54 | Dustproof and splashproof for industrial environments |
| Température de fonctionnement | -20℃ to 85℃ | Large plage de température |
| Température de stockage | -40℃ to 85℃ | Storage ambient condition |
| Durée de vie mécanique | >1,000,000 cycles | High durability |
| Pressure Port Connection | 2 plastic tubes, 6 mm diamètre | For pressure sampling tube connection |
| Cable Gland Size | CM = M20 × 1.5 | Cable interface dimension |
Series Range & Accuracy Comparison
| Série | Gamme typique (Pa) | Précision | Différentiel de commutation (Pa) | Scénario applicable |
| DPS | 20~2500 | ≤±15% | 10~150 | General HVAC systems |
| DPSN | 20~2500 | ≤±15% | 10~150 | Economy HVAC systems |
| DPSP | 10~500 | ≤±10% | 5~15 | High precision control occasions |
| AFS | 25~500 | ≤±15% | 10~30 | Airflow proof & fire protection systems |
- Lignes directrices de sélection & Solutions de remplacement
- Paramètres de sélection clés
Pressure Range Matching: Select based on actual duct differential pressure (20~200Pa for filter monitoring; 40~400Pa for large fans)
Accuracy Requirement: ≤±15% for general use (DPS/DPSN); ≤±10% for high precision (DPSP)
Electrical Load: Ensure switch rating meets control loop current (≤1.5A/250VAC)
Environnement d'installation: IP54 for non-humid industrial areas; extra protection required for outdoor installation
Méthode de connexion: Select AMP connector or screw terminal according to site wiring
- Recommended Replacement Table
| Modèle original | Remplacement direct | Function Upgrade Model | Budget Alternative |
| DPSN250A | DPSN200A (Standard) | DPSP200 (High Precision) | Domestic Chint / Délicieux |
| DPS200 | DPS200A (With AMP Connector) | DPSP200 (High Precision) | Johnson Controls P74JA-1 |
| DPS400 | DPS400A | DPSP500 | Siemens QBM81-3 |
| DPS1000 | DPS1000A | DPSP500 | Schneider A9F72200 |
- Précautions d'installation
- Vertical mounting is standard; horizontal mounting will increase range value by 20Pa
- Avoid bending sampling tubes; length shall not exceed 2 mètres
- Connect +P1 to high-pressure side, -P2 to low-pressure side
- Electrical wiring must comply with safety standards to avoid short circuit
- Adjust setpoint only after system runs stably to ensure accurate measurement
- FAQ
- Difference between DPSN250A and DPSN200A: DPSN250A is non-standard; the actual standard model is DPSN200A (20~200Pa), 250 est une faute de frappe.
- How to choose the correct range: 20~200Pa for filter monitoring; 40~400Pa for fan status; 200~1000Pa or higher for large industrial ducts.
- IP54 Protection Definition: Dust-tight and protected against splashing water, suitable for indoor industrial environments.
