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The highly accurate differential pressure meter, Testo 521, with an internal pressure sensor from 0 to 100 hPa is ideal for Pitot tube measurements in the range 5 to 100 m/s. Testo 521 is available in 2 accuracy classes. Testo 521-1 with an internal pressure sensor with Class 0.2, Testo 521-2 with an internal pressure sensor with Class 0.1.
In the case of velocity speeds in the range from 1 to 12 m/s, you can carry out accurate measurements using the 100 Pa probe which can be attached externally.
The measurement data can be saved according to location and analysed on your PC or printed on site on your Testo printer.
| Memory | 25,000 |
| Storage temperature | -4 to +158 °F |
| Operating temperature | +32 to +122 °F |
| Battery type | 9 V, IEC 6LR61 |
| Dimensions | 8.62 x 2.68 x 1.97 in |
| Housing material | ABS |
NTC | |
|---|---|
| Measuring range | -40 to +302 °F |
| Accuracy | ±0,36 °F (+14 to +122 °F) ±0,72 °F (remaining range) |
| Resolution | 0.1 °C |
Piezoresistive pressure sensor | |
| Measuring range | 0 to 40.14 inH2O |
| Accuracy | ±0.1 % of f.v. |
| Resolution | 0.001 inH2O |
| Overload | 120 inH2O |
Piezoresistive pressure sensor 2 | |
| Measuring range | 0 to 802 inH2O |
| Accuracy | ±0.1 % of f.v. |
| Resolution | 0.1 inH20 (0638 1347) 0.001 inH2O (0638 1447) 0.01 inH2O (0638 1547) 0.1 inH2O (0638 1847) |
Type K | |
| Measuring range | -328 to +2498 °F |
| Accuracy | ±0,72 °F (-148 to +392 °F) ±1.8 °F (remaining range) |
| Resolution | 0,1 °C |
All returns must be authorized. Items returned prior to authorization will not be accepted. For international customers where applicable, customers must ship any returns to us freight and duty prepaid. Return freight charges for internationsl shippments will be the responsibility of the customer.
Defective new equipment may be returned for warrantyrepair/exchange to us within (5) days of the shipment receipt date. After five (5) days, returns will be handled by direct contact and in accordance with the warranty terms of the item's manufacturer. Items that have malfunctioned due to mishandling, electrical overload, etc., will be subject to repair charge.
Non defective new equipment will be authorized for return within five (5) days of the shipment receipt date if the equipment is still in new, re-sellable condition with the original manual(s), accessories, packing material and carton. We reserve the right to reject returnsin which there is no original packaging, missing accessories, damage or visible signs of usage of the item. A restocking fee of up to 25% of purchase price may apply. Special orders and dangerous goods are non-returnable.
(Do not write anytingon the manufacturer's original package or use as a shipping carton. Include all accessories, manuals and warranties.)
Please, include a copy of the packing list or invoice with a reason for the return. Your return authorization number is valid for thirty (30) days.
We can ship to both US and Canada. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.
When you place an order, we will charge a flat rate shipping for your items.
Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.
Not Applicable
| Condition: | NA |
Defective new equipment may be returned for warrantyrepair/exchange to us within (5) days of the shipment receipt date. After five (5) days, returns will be handled by direct contact and in accordance with the warranty terms of the item's manufacturer. Items that have malfunctioned due to mishandling, electrical overload, etc., will be subject to repair charge.
Non defective new equipment will be authorized for return within five (5) days of the shipment receipt date if the equipment is still in new, re-sellable condition with the original manual(s), accessories, packing material and carton. We reserve the right to reject returnsin which there is no original packaging, missing accessories, damage or visible signs of usage of the item. A restocking fee of up to 25% of purchase price may apply. Special orders and dangerous goods are non-returnable.
(Do not write anytingon the manufacturer's original package or use as a shipping carton. Include all accessories, manuals and warranties.)
Please, include a copy of the packing list or invoice with a reason for the return. Your return authorization number is valid for thirty (30) days.
