Setra Systems 761 Operating Instructions Manual - page 6
Figure 3: Outline drawing showing optional VCR™ style face seal
vacuum fitting.
3.0 Electrical Installation
The Model 761 operates from a 13-30 VDC power supply.
The Model 761 is factory configured for either a 0-5 VDC output or 0-10
VDC output.
The pin out for the D-sub, 15 pin connector is shown in Figure 5, page 5.
A schematic diagram of the recommended electrical connections to the
D-sub, 15 pin connector is shown in Figure 6, page 5.
Note 1: The ground of any external power supply and readout system should be the
same as the transducer ground (chassis ground) to minimize any possible ground
loops which may effect the performance and stability of the transducer.
Note 2: The Model 761 meets CE mark requirements and complies with EMC Direc-
tive 2004/108/EC. To ensure compliance when installed, an overall metal braided
shielded cable (and metal shielded connectors for the D sub connector option)
connected to chassis ground at both ends is required.
Belden 9941 cable or
equivalent is recommended.
Note 3: It is recommended that the 761 be powered with a linear power supply.
Innappropriately used switching power supplies can degrade performance.
Note 4: Do not operate this product in an explosive enivornment.
4
9
1.95
2.47
.88
1.06"
ACROSS FLATS
#8 FEMALE VCR
7.0 Specifications
Performance Data:
Accuracy
1,2,3
:
Optional
Resolution:
≤0.005% FS
Long Term Stability:
effects
Thermal effects
Compensated Range:
15 to +40°C
Zero Shift:
Span Shift:
Proof Pressure:
45 psia
Burst Pressure:
> 100psi
Operating Temperature:
5 to +50°C
Storage Temperature:
-20 to +80°C
Electrical Data:
Connector:
15 pin D-Sub
Excitation:
13 to 30 VDC for 0-10 VDC
9 to 30 VDC for 0-5 VDC
Output:
0 - 10 V DC or 0 - 5 V DC
Output Maximum Load:
>10 k ohms
Power Consumption:
EMC Performance:
2004/108/EC
Response Time:
Physical Description:
Case:
Powder Coated Cast Aluminum
Pressure Fittings:
0.5” OD Tube; other fittings available; see reorder
data page
Wetted Materials
4
:
Inconel®
Measurement cavity volume
5
:
Weight:
Notes:
1. Accuracy is expressed as % of reading. However, near Zero, the accuracy is limited by the
resolution of the instrument. So, the accuracy is more correctly stated as the greater of ±0.50%
reading or ±0.005% FS. (For the optional accuracy, this becomes the greater of ±0.25% reading
or ±0.005% FS).
2. Includes non-linearity, non-repeatability and hysteresis
3. Units calibrated at nominal 20ºC
4. Wetted material is for 0.5” tube option only. Other flange options will add stainless steel.
5. Maximum cavity volume including the 0.5” OD tube volume. Other flange options will add
wetted volume.