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EWSA
Sensor de temperatura del aire para uso en interiores o exteriores
Air Temperature Sensor for Indoor or Outdoor Use
Modèles en stock
- Designed for Indoor and Outdoor Use
- Screw Terminals for 4-Wire Pt100 Connection
- Optional Built in 4 to 20 mA Transmitter
- Rugged Sensor and Protection Tube Design
EWSA
À partir de
£
185.58
Modèles en stock
Aperçu du produit
- Electrical Connection Screw Terminal
- Enclosure Ratings IP65
- Mounting M20 Cable Gland
- Number of Wires 4
- Probe Diameter 12.7 mm
- Probe Length 75 mm
- Series ID EWSA
- Standard Transmitter Scaling None
Supported Applications
The Omega EWSA Series consists of rugged, weatherproof temperature sensors and transmitters designed for wall or pipe mounting in harsh indoor or outdoor environments. The series features a sheathed RTD probe housed within an outer protection tube to support installation where exposure to environmental conditions is expected.
Operating Conditions & Performance
The EWSA Series operates across distinct ambient temperature ranges depending on the configuration and humidity conditions:
- Sensor-only models: -50 to 100°C
- Transmitter models (EWSA-Pt100-TX): -40 to 85°C at 10 to 90% RH non-condensing
The enclosure is rated IP65. The sensor element for the standard model is a Pt100 class A 4-wire RTD, with Pt1000 available on request.
Configuration Options
The series offers configurable options across sensor types and output signals to address specific measurement needs:
- Sensor Types: Standard configuration includes a 6 mm diameter sheathed RTD probe with a stem length of 75 mm, housed in a 12.7 mm outer protection tube.
- Output Signals: Sensor-only variants provide electrical connection via a 4-way screw terminal block for the sensor element. Transmitter models (e.g., EWSA-Pt100-TX) offer a standard scaling of 4 mA at -25°C and 20 mA at 75°C.
- Power Supply: Loop-powered transmitter models operate on 10 to 30 Vdc. Load resistance is calculated as [(V supply - 10)/20] KΩ, e.g., 700Ω @ 24V.
Housing and mechanical features include:
- Enclosure Material: Aluminum alloy box with overall dimensions of 80 W x 75 H x 58 mm D.
- Cable Entry: M20 cable gland fitted for cables ranging from 2.5 to 6.5 mm in diameter.
Key Product Differences
The EWSA Series is differentiated by the presence of an integrated transmitter and sensor element type:
- EWSA-Pt100 (Sensor Only): Features a Pt100 class A 4-wire standard RTD with a screw terminal block connection. Operates in ambient temperatures from -50 to 100°C.
- EWSA-PT100-TX (Transmitter Model): Integrates the sensor with a loop-powered transmitter outputting 4–20 mA scaled for -25°C to 75°C. This configuration utilizes a 2-wire electrical connection and operates in ambient temperatures from -40 to 85°C at 10 to 90% RH non-condensing.
- EWSA-PT1000: A variant utilizing the Pt1000 sensor element, available on request.
Afficher les évaluations et les avis
Rated 5 out of
5
by
Jeff mechler from
Temp transducer
Very helpful on finding replacement of older item
Shipped and received in very timely manner
Date published: 2025-08-18
Rated 5 out of
5
by
Sheik from
it great
it great product Air Temperature Sensor for Indoor and Outdoor Use
Date published: 2021-10-28
Will there be any RoHS compliance certificate for EWSA-PT100-TX published? How long should I expect to wait for the certification to be made public?
Thank you for your inquiry. Please send your request to temp@omega.com
Date published: 2020-04-03
EWSE-PT100 VS EWSA-PT100 Disregarding any spec sheets for the TR option: Can we wire the new EWSA-PT100 EXACTLY the same as we wire the now obsolete EWSE-PT100? Was the old EWSE-PT100 a 4-20 output and what output is the EWSA?
Thank you for contacting Omega Engineering on your EWSA-PT100 question.
Please see below product manuals for the older discontinued EWSE-PT100 series and the new replacement EWSA-PT100 series. As you can see the electrical connections are the same for the EWSE-PT100 vs EWSA-PT100 RTD type output and the EWSE-PT100-TX vs EWSA-PT100-TX 4 to 20 mA type output.
EWSE-PT100 user manual including the 4 to 20 mA transmitter model EWSE-PT100-TX;
https://assets.omega.com/manuals/EWSE.pdf
EWSA-PT100 RTD type output;
https://assets.omega.com/manuals/M5732.pdf
EWSA-PT100-TX 4 to 20 mA type output;
https://assets.omega.com/manuals/M4561.pdf
Date published: 2019-06-17
Can you provide dimensions on this part so we can design mounting methods before purchase?
Dimensions:
Box: 80 W x 75 H x 58 mm D (3 x 2.9 x 2.3")
Sensor: 75 mm long x 12.7 mm OD (2.9 x 0.5")
Date published: 2025-01-27
What is the sampling frequency for this sensor? Is it capable of recording wind speed and direction values once ever second? (1Hz)
Hi Daniel18
Thank you for the inquiry. This unit provides temperature indication via analog output only.
Best regards
OMEGA
Date published: 2021-07-06
EWSA-PT100-TX for this which cable is suitable??
Hi Narendra,
Thank you for the inquiry. Cable rated for low voltage process signals similar to our TX2-100
Specs
https://assets.omega.com/spec/PX_WIRE.pdf
Best regards,
OMEGA
Date published: 2020-09-24
Where can I find the wiring diagram for the EWSA-PT100-TX, specifically the Transmitter wiring with power requirements listed?
Thank you for your inquiry. You can refer to the TX12 Transmitter Manual for a wiring diagram for the EWSA-PT100-TX since that is transmitter inside.
https://www.omega.com/en-us/data-acquisition/signal-conditioners/head-mount-signal-conditioners/tx12-head-mnt-temp-tx/p/TX12
Date published: 2024-04-05
Has the EWSA-PT100 a protective cover for sensor using in outdoor of hazadus condition? I did not found it on your website and manual.
Unfortunately, EWSA-PT100 is not rated for outdoor and hazardous conditions
Date published: 2024-11-01
Hello, I am looking at the EWSA-PT1000, and it says optional built in 4-20ma transmitter. What part number(s) do I have to give my supplier to get this and the transmitter?
Hi Cmrch,
Thank you for the inquiry. The transmitter is available for the EWSA-PT100 only. Part# EWSA-PT100-TX.
Best regards
OMEGA
Date published: 2023-03-06