Watson Smith NPT 1/4 Female 300 NL/min EP Converter, 1 to 10 V input 0.14 bar to 8 bar
- RS Stock No.:
- 729-486
- Mfr. Part No.:
- 540400R
- Brand:
- Watson Smith
Subtotal (1 unit)*
Kr. 8 452,09
(exc. VAT)
Kr. 10 565,11
(inc. VAT)
FREE delivery for online orders over 500,00 kr
In Stock
- 1 unit(s) ready to ship
- Plus 2 unit(s) ready to ship from another location
- Plus 2 unit(s) shipping from 12 May 2026
Need more? Click ‘Check delivery dates’ to find extra stock and lead times.
Units | Per unit |
|---|---|
| 1 + | Kr. 8 452,09 |
*price indicative
- RS Stock No.:
- 729-486
- Mfr. Part No.:
- 540400R
- Brand:
- Watson Smith
Specifications
Technical Reference
Legislation and Compliance
Product Details
Find similar products by selecting one or more attributes.
Select all | Attribute | Value |
|---|---|---|
| Brand | Watson Smith | |
| Product Type | EP Converter | |
| Input Signal | 1 to 10 V | |
| Maximum Flow Rate | 300NL/min | |
| Connection Size | NPT 1/4 Female | |
| Connection Thread Standard | NPT | |
| Overall Length | 102mm | |
| Minimum Outlet Pressure | 0.14bar | |
| IP Rating | IP65 | |
| Maximum Outlet Pressure | 8bar | |
| Maximum Input Pressure | 5bar | |
| Maximum Operating Temperature | 60°C | |
| Overall Height | 92mm | |
| Overall Width | 73mm | |
| Hazardous Area Certification | ATEX | |
| Standards/Approvals | EN 60079 | |
| Select all | ||
|---|---|---|
Brand Watson Smith | ||
Product Type EP Converter | ||
Input Signal 1 to 10 V | ||
Maximum Flow Rate 300NL/min | ||
Connection Size NPT 1/4 Female | ||
Connection Thread Standard NPT | ||
Overall Length 102mm | ||
Minimum Outlet Pressure 0.14bar | ||
IP Rating IP65 | ||
Maximum Outlet Pressure 8bar | ||
Maximum Input Pressure 5bar | ||
Maximum Operating Temperature 60°C | ||
Overall Height 92mm | ||
Overall Width 73mm | ||
Hazardous Area Certification ATEX | ||
Standards/Approvals EN 60079 | ||
RoHS Status: Exempted
- COO (Country of Origin):
- GB





Standard Converters
These standard converters are reliable pneumatic fittings. This range has a 1/4 inch female port and includes mounting bracket and connector plug. There is minimal vibration from this converter and it also has the benefit of being sensitive to low pressures. Proportional converters have a glass reinforced nylon cover and nitrile diaphragms. This range of pneumatic pressure control proportional converters provide excellent pressure control providing oil free, dry air filtered to 5μm.
Integral volume booster gives flow rates up to 4·72 dm3/s, 10scfm
Response time typically 2 seconds (10-90%)
Low supply pressure sensitivity
1/4 inch female port connection
Supplied with DIN43650 connector plug
I/P & E/P Converters
I/P converters are electro-pneumatic instruments that will change pneumatic pressures in response to varying electrical current and voltage input signals. They have extensive application potential in both industrial and process systems, for control of cylinders, valves, valve positioners, relays, brakes and clutches. The converters can be mounted in control rooms or in the field, and have zero and span settings that are adjustable from the front face of the instrument. Failsafe converters are available which will cause the output pressure to fall to <15mbar (0.2 psig) in the event of power failure or loss of input signal.
Note
*Inlet pressure must be at least 0.7 bar above output pressure
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