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Watson Smith
Watson Smith is a pneumatic instrumentation brand from Leeds, England, covering current-to-pressure (I/P) converters, pressure-to-current (P/I) transmitters, Manostat precision regulators and test instruments. Its datasheets are issued by Norgren, and several series remain in current Norgren literature while others are only documented in older datasheets. Seven Star LLC, an independent supplier in Muscat, lists Watson Smith instruments for pneumatic control loops in Oman and the GCC.
Read more about Watson Smith 
Brand profile
About Watson Smith
- Headquarters
- Leeds, England
- Speciality
- I/p converters, manostat regulators and instruments
- Listed with us
- 1 product
Watson Smith products by category
Watson Smith is a pneumatic instrumentation brand from Leeds, England, covering current-to-pressure (I/P) converters, pressure-to-current (P/I) transmitters, Manostat precision regulators and test instruments. Its datasheets are issued by Norgren, and several series remain in current Norgren literature while others are only documented in older datasheets. Seven Star LLC, an independent supplier in Muscat, lists Watson Smith instruments for pneumatic control loops in Oman and the GCC.
Watson Smith instruments
The 100X and 101X series and the 422 I.S. and 140 failsafe types convert a 4 to 20 mA signal into a pneumatic output, with intrinsically safe and flameproof versions in the 422 and 140. The Type 68 and Type 71 turn pneumatic pressure into 4 to 20 mA. Manostat regulators, loading stations, the Type 300D digital pressure meter and the FRI-30 air flow controller complete the range we list.
Current and older lines
Each product page states which datasheet it is based on and its date. Where we only found an older datasheet we say so and ask you to confirm availability before ordering.
Request a Quote for Watson Smith Products
Looking for Watson Smith parts not listed here, or pricing for a project? Send us the part numbers and quantities. Seven Star LLC sources genuine Watson Smith products for customers across Oman and the GCC and replies with a formal quotation.
- Genuine OEM products
- Supply across Oman & the GCC
- Formal quotation from our sales team
Free, no-obligation quotation · takes about 1 minute
Other enquiries: [email protected] · WhatsApp
Frequently Asked Questions
What does Watson Smith make?
Watson Smith instruments include I/P converters, P/I transmitters, Manostat precision pressure regulators, loading stations and portable pressure meters for pneumatic control loops.
Are all Watson Smith products still current?
No. The 100X, 101X, 422 I.S. and 140 types appear in current Norgren datasheets, while other products are documented only in older datasheets and should be checked for availability.
What is an I/P converter?
A device that converts a 4 to 20 mA signal into a proportional air pressure such as 3 to 15 psi or 0.2 to 1 bar, used to drive valve positioners and actuators.
Do you have hazardous-area Watson Smith models?
Intrinsically safe and flameproof versions are listed in the Type 422 I.S., Type 140 and Type 71 datasheets, with the certificates printed there. Confirm the certified model for your site.
Is Seven Star LLC a distributor of Watson Smith?
No. Seven Star LLC is an independent supplier in Muscat that sources Watson Smith products through commercial channels and checks each model against the manufacturer datasheet before quoting.