34-ST-03-64 Page 7
Performance Under Rated Conditions * - Model STR13D
Parameter
Upper Range Limit ** | psid |
| bar |
|
|
Minimum Span | psid |
| bar |
|
|
Turndown Ratio |
|
Zero Elevation and Suppression
Accuracy (Reference – Includes combined effects of linearity, hysteresis, and repeatability)
•Stated accuracy does not apply for models with 2.9 inch diameter remote seal diaphragms.
•Accuracy includes residual error after averaging successive readings.
•For FOUNDATION Fieldbus use Digital Mode specifications. For HART use Analog Mode specifications.
Combined Zero and Span Temperature Effect per 28°C (50°F) ***
Description
100
7
5
0.35
20 to 1
No limit except minimum span within
In Analog Mode: ±0.1% of calibrated span or upper range value (URV), whichever is greater, terminal based.
For URV below reference point (30 psi), accuracy equals:
| 30 psi |
| 2 bar | ||
±0.05 + 0.05 ( |
| ) or | ±0.05 + 0.05 ( |
| ) in % of span |
span psi | span bar | ||||
In Digital Mode: ±0.075% of calibrated span or upper range value (URV), whichever is greater, terminal based.
For URV below reference point (30 psi), accuracy equals:
| 30 psi |
| 2 bar | ||
±0.025 + 0.05 ( |
| ) or ±0.025 + 0.05 | ( |
| ) in % of span |
span psi | span bar | ||||
In Analog Mode: ±0.33% of span.
For URV below reference point (60 psi), effect equals:
±0.05 + 0.2 | ⎛ | 60 psi | ⎞ | ⎛ | 4 bar ⎞ | In % span | |
⎝ | span psi | ⎠or ±0.05 + 0.28 | ⎝ | span bar | ⎠ | ||
|
|
|
|
|
| ||
In Digital Mode: ±0.305% of span.
For URV below reference point (60 psi), effect equals:
| ⎛ | 60 psi | ⎞ | ⎛ | 4 bar ⎞ |
|
±0.025 + 0.25 | ⎝ | span psi | ⎠or ±0.025 + 0.28 | ⎝ | span bar ⎠ | In % span |
*Performance specifications are based on reference conditions of 25°C (77°F), zero (0) static pressure, 10 to 55% RH, and 316L Stainless Steel barrier diaphragm.
**Transmitter URL limit or maximum seal pressure rating, whichever is lower.
***Specification applies to transmitters with 2 seals only. Apply 1.5 times factor to temperature effect for capillary lengths greater than 10 feet.
