Stock
In stock, usually ships within 24 hours
Usually ships in 1-3 days
Usually ships in 1-2 weeks
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Returns
If you are not satisfied with your purchase, please request a Return Material Authorization (RMA) by emailing your account representative or the general customer support address: customercare@fondriest.com
Why Buy from Fondriest
At Fondriest, we are committed to providing high quality products at affordable prices with the industry’s best support. Additionally, we offer:
- Discounts
High volume purchases lead to favorable pricing, which is passed on to the customer by way of discount off MSRP.
- Assembly, Test and Calibration
Sensors and instruments are assembled, tested and calibrated prior to shipment. A calibration report is included.
- Lifetime Technical Support
A knowledgeable staff of application engineers provides ongoing support for the life of the product.
- Product Training
Application engineers are available for webinars or personalized, on-site start-up and training. Extensive measurement technology, product troubleshooting and instrument repair workshops are offered at the factory.
- Extended Warranties
Warranties extended beyond factory standards are offered on many items to ensure a lasting useful life.
- Repair
A factory-authorized service center provides fast-turnaround product repair and annual maintenance.
- Rental
Rental equipment is available to minimize downtime and cover equipment needs when projects expand.
- Communications
Call, email or chat online with application engineers. Email correspondence is responsive and a toll free number is available for added convenience.
- Quick Ship
Many orders ship on the same day and expedited shipping is available. If a product cannot be shipped immediately, customers are notified by phone or email.
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Description
Features
- Thermally-adjusted humidity sensor designed for stability and accuracy in abrupt condition changes
- Forecast weather with pressure trend indicator
- 5-year warranty

| Image | Part # | Product Description | Price | Order | Stock |
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0835DT | 3500 Delta T Pocket Weather Meter, yellow |
$199.00
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| Image | Part # | Product Description | Price | Order | Stock |
|---|---|---|---|---|---|
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0802 | Relative humidity calibration kit |
$99.00
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0801 | Replacement impeller |
$19.00
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0807 | Portable tripod |
$25.00
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0792 | Collapsible tripod |
$89.00
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0791 | Rotating vane mount |
$69.00
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0806BLK | Tactical case, black (MOLLE-compatible) |
$39.00
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0806BRN | Tactical case, brown (MOLLE-compatible) |
$39.00
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0806GRN | Tactical case, ranger green (MOLLE-compatible) |
$39.00
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Details
The Kestrel 3500 DT incorporates a Delta T calculation, the spread between the wet bulb temperature and the dry bulb temperature. Delta T offers a quick guide to determining acceptable spraying conditions. For example, it is not recommended to apply pesticides when Delta T is above 10 a range of 2 to 8 is ideal. With the Kestrel 3500 Delta T, the calculation is done for you accurately and simply. The Kestrel 3500DT measures barometric pressure, pressure trend, altitude, relative humidity, heat stress index, dewpoint, wet bulb temperature, wind chill, air, water & snow temperature, current wind speed, average wind speed, and maximum wind gust.
- Real-time clock
- Waterproof and floats
- Large easy-to-read display with backlight
- Data hold function
- High precision pressure sensor
- Quick response, external thermistor
- Forecast weather with pressure trend indicator
- Humidity sensor can be recalibrated in the field with Relative Humidity Calibration Kit.
- Innovative, thermally adjusted humidity sensor designed for stability and accuracy in abrupt condition changes
- Patented user-replaceable impeller
- Reliable, portable and easy to use
- Protective cover with sure-grip overmolding
- All instruments and accessories are completely assembled in the USA
- 5-year warranty
- (1) 3500DT Pocket Weather Meter
- (1) Slip-on protective cover
- (1) Neck lanyard
- (1) CR2032 coin cell battery (Average 300 hour life)
- (1) Kestrel Certificate of Conformity



