VEGA D77 Hydrostatic pressure transmitters - Manual (Page 8)

8 Pressure transmitters D76 and D77
Measuring ranges
Nominal meas. range Gauge pressure Low pressure Pressure transmitters
resistance resistance D76 D77
D76 / D77
Gauge pressure
0 … 0.1 bar
10 bar / – -0.1 bar • –
0 … 0.2 bar 15 bar / – -0.2 bar • –
0 … 0.4 bar 20 bar / 10 bar -0.4 bar • •
0 … 1.0 bar 25 bar / 25 bar -1.0 bar • •
0 … 2.5 bar 35 bar / 25 bar -1.0 bar • •
0 … 5.0 bar 45 bar / 25 bar -1.0 bar • •
0 … 10.0 bar 60 bar / 25 bar -1.0 bar • •
0 … 20.0 bar 90 bar / 25 bar -1.0 bar • •
Zero -20 % … +95 % of nominal measuring range
adjustable
Span 3.3 % … 120 % of nominal measuring range
adjustable
Recommended turn down with
accuracy class 0.25
up to 1 : 5
Adjustment elements
Pressure transmitters
- terminal insert
without adjustment elements
- adjustment insert 2 keys, 1 rotary switch
Measuring accuracy (similar to DIN 16 086, DIN V 19 259-1 and IEC 770)
Deviation
Reference conditions acc. to IEC 770
- temperature
15°C … 35°C
- moisture 45 % … 75 %
- air pressure 860 mbar … 1060 mbar
Determination of characteristics limit point adjustment acc. to DIN 16 086
Characteristics linear
Deviation in characteristics 1) < 0.25 % with accuracy class 0.25
Hysteresis 1) < 0.02 % ceramic measuring cell
< 0.05 % metallic measuring cell
Repeatability 1) < 0.02 % ceramic measuring cell
< 0.05 % metallic measuring cell
Influence of the ambient temperature in general
Average temperature coefficient
of the zero signal
1) 2) < 0.15 %/10 K with accuracy class 0.25
Product description
1) Relating to the nominal measuring range.
2) In the compensated temperature range of 0°C … +80°C, reference temperature 20°C.