Accuracy Specifications; Operating Conditions - WIKA DMSU21SA Mode D'emploi

15. Specifications

15.4 Accuracy specifications

Accuracy specifications
Accuracy at reference
1)
conditions
EN
Adjustability
Zero point
Span
Turndown
Mounting correction
Non-repeatability
Behaviour with turndown
TD ≤ 5:1
TD > 5:1 ... ≤ 100:1
Long-term stability
1) Including non-linearity, hysteresis, zero offset and end value deviation (corresponds to measured error per IEC 61298-2).
2) Legend
GES: Overall accuracy via turndown
GG: Accuracy (e.g. 0.15 %)
TD: Turndown factor (e.g. 4:1 corresponds to TD factor 4)

15.5 Operating conditions

Operating conditions
Range of applications
Permissible air humidity
Permissible temperature ranges
Ambient
Medium
Storage
Ingress protection
per IEC/EN 60529
Explosion protection
58
0.1 % of span
■
0.5 % of span
■
-20 ... +95 % (downwards, the adjustability is always limited
by the minimum pressure of 0 bar abs. [0 psia])
-120 ... +120 % with a difference between zero point and
span of max. 120 % of the nominal measuring range
Unlimited; maximum recommended turndown 20:1
Measuring range ≤ 25 bar [360 psi]
-20 ... +20 %
≤ 0.1 % of span
2)
No influence on the accuracy
GES = GG x TD / 5
≤ 0.1 % of span
Suitable for internal and external operation, exposure to direct
sunlight is permitted
≤ 93 % r. h.
10 ... 40 °C [50 ... 104 °F]
-10 ... +130 °C [14 ... 266 °F]
■
-10 ... +150 °C [14 ... 302 °F]
■
10 ... 60 °C [50 ... 140 °F]
IP65
The ingress protection only applies with closed case head and
closed cable glands.
→ See chapter 15.1 "Permissible temperature ranges for Ex
versions"
WIKA operating instructions, model DMSU21A