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DwyerMeasurement

Dwyer Transmitter 645-0

Dwyer Transmitter 645-0 is a pressure measurement device delivering ±0.25% accuracy across 0 to 1 psid range with 30 to 50 ms response time. IP65-rated stainless steel/aluminum housing suits industrial process…

SKU 3G-CBM-02198

Also listed as: DWY 26002 · DWY-26002

Brand
Dwyer
Item
Transmitter 645-0
Category
Measurement
UNSPSC
41112412 — Pressure gauge
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Local availability & support — Singapore

Local office
20 Woodlands Link #09-05, Singapore 738733
Phone
+65 8878 8355
Delivery
Same-day or next-business-day delivery within Singapore for in-stock items; 7–14 days for factory-order parts from Europe.
Payment
Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.
Ships to
Singapore

Technical Specifications

Dwyer
accuracy
±0.25%
ip rating
IP65
connection
1/4"-18 female NPT
response time
30 to 50 ms
pressure range
0 to 1 psid
loop resistance
0 to 1000 Ω
housing material
Stainless steel/aluminium

Datasheet Content

Transmetteur de pression différentielle pour liquides Série 645 ±0.25% de précision, réponse rapide, basse pression 1-63/64 ø7/8 KNOCKOUT INTENDED FOR [50.50] 1-1/2 A 1/2 I.D. CONDUIT CONNECTION [38.16] 1-3/32 DWYER INSTRUMENTS, INC. MICHIGAN CITY, IN. U.S.A. 2 5/32 1-15/16 [27.98] [54.61] [49.35] 3-1/16 [77.59] 3 1/64 [76.45] 1 [25.44] 1/4 NPT HIGH LOW BOTH SIDES 2-7/16 1 PRESSURE [62.01] PRESSURE PORT PORT BLEED SCREWS [25.44] La série 645 Transmetteur de Pression Différentielle pour liquides est conçue SPÉCIFICATIONS pour un usage compatible avec les gaz et liquides et utilisée tant pour la mise en pression que Service : Gaz et liquides compatibles pour l’usage en pression comme en référence. comme ports de référence. La sonde capacitive à réponse rapide délivre un signal de sortie de 4 à Matériaux : 17-4 PH acier inoxydable, Série 300 acier inoxydable, élastomères fluorés et joints 20 mA proportionnel à la pression différentielle avec ±0.25% de précision. La série de transmetteurs toriques en silicone and joints de vis d’extraction. Précision : ±0.25% FS (RSS). 645 est idéale pour les contrôles de procédé, la surveillance de l’état des filtres, le matériel de Limites de Température : Opérationnelle : de -22 à +80°C ; Stockage : de -54 à réfrigération, le contrôle de débit de pompe, l’équipement HVAC et la mesure des niveaux de liquide. +126°C. Limites de Pression : (Côté haut) de 0,06 à 0,34 bar : 20 x FS, Afin de faciliter l’installation et l’entretien, commandez le collecteur 3 vannes proposé en option. 10 à 25 psi : 10 x FS, 50 psi : 5 x FS, 100 psi : 2.5 x FS ; (côté bas) 2.5 x FS. La prise de prélèvement permet l’élimination totale de l’air dans les tubes et cavités sous pression. Effets Thermiques : (inclus le zéro et l’étendue) ±0.02% FS/°F, de -1 à +65°C. Puissance Requise : de 11 à 30 VDC. Signal en sortie : de 4 à 20 mA, 2 fils. Modèle Description Bar Réf. Réglages du zéro et de l’étendue : Réglables, ±1 mA, non interactif. 645-0 0 à 1 psid 0 à 0,069 3G-CBM-02198 Temps de Réponse : de 30 à 50 ms. Résistance de Boucle : de 0 à 1000Q. Connection Electrique : Bloc de jonction avec bande de cloison et conduit de boîtier. 645-1 0 à 2 psid 0 à 0,14 DWY26004 22 mm d’ouverture de diamètre du conduit. Raccord : 1/4”-18 femelle NPT. 645-2 0 à 5 psid 0 à 0,35 DWY26006 Boîtier : Acier inoxydable/aluminium, IP65. Poids : 0.4 kg. 645-3 0 à 10 psid 0 à 0,69 DWY26008 Homologations : CE. 645-4 0 à 25 psid 0 à 1,72 DWY26010 Collecteur 3 vannes, vannes multiples. Collecteur : Laiton. Type de Valve : 90° on/off. Raccord : 1/4”-18 femelle NPT. 645-5 0 à 50 psid 0 à 3,45 DWY26012 645-6 0 à 100 psid 0 à 6,90 DWY26014 OPTION Pour un certificat d’étalonnage traçable selon les prescriptions NIST, utiliser le code de commande NISTCAL-PT1.

Technical Documents

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Dwyer Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

Dwyer Transmitter 645-0 is a pressure measurement device delivering ±0.25% accuracy across 0 to 1 psid range with 30 to 50 ms response time. IP65-rated stainless steel/aluminum housing suits industrial process control applications requiring precise, reliable pressure monitoring.

Frequently Asked Questions

What is the Dwyer 645-0 transmitter used for?

The Dwyer 645-0 differential pressure transmitter is used for industrial process control, filter monitoring, refrigeration, pump flow control, HVAC equipment, and liquid level measurement. It is compatible with gases and liquids and delivers a 4 to 20 mA output proportional to differential pressure.

What are the specifications of the Dwyer 645-0?

The Dwyer 645-0 has a pressure range of 0 to 1 psid, accuracy of ±0.25% FS, response time of 30 to 50 ms, and a 4 to 20 mA output. It features a 1/4"-18 female NPT connection, IP65 stainless steel/aluminium housing, and operates on 11 to 30 VDC power.

Where to buy the Dwyer 645-0 in Singapore?

You can source the Dwyer 645-0 transmitter in Singapore through 3G Electric. We supply this Dwyer instrument and handle logistics, customs clearance, and delivery to your facility. Contact us for availability and lead time on this model.

How to install the Dwyer 645-0 transmitter?

Install the Dwyer 645-0 by connecting the 1/4"-18 female NPT ports to high and low pressure lines, ensuring both sides are properly bled using the bleed screws. Use the optional 3-valve manifold for easier maintenance. Wire the 4 to 20 mA loop to the terminal block with 11 to 30 VDC supply.

Used in

Common applications for Dwyer
Combustion air-filter monitoring — Magnehelic Series 2000 on burner air-intake filter banks
Clean-room and pharmaceutical pressurisation — Magnehelic / Capsuhelic differential-pressure gauges
HVAC fan-discharge static pressure — Mark II inclined-vertical manometers on AHU test points
Filter-blockage alarms — Photohelic Series 3000 combined gauge/switch on air-handling units
BMS-integrated pressure monitoring — Digihelic DH3 with 4–20 mA output for building management

Dwyer Products

3G Electric supplies Dwyer measurement. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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