Setra System Model 370 - Manual (Page 43)

37
Pressure Ranges
Type of
Pressure Pressure Range Display Altitude Range 1
Barometric 600 to 1100 mbar 600.00 to 1100.00 -1000 to 13,800 ft.
800 to 1100 mbar 800.00 to 1100.00 -1000 to 6,400 ft.
Absolute 0 to 10 psia 10.0000 10,300 to 100,000 ft.
0 to 20 psia 20.0000 -1000 to 100,000 ft.
0 to 50 psia 50.0000 -1000 to 100,000 ft.
0 to 100 psia 100.000 -1000 to 100.000 ft.
Proof Pressure: 150% of full scale pressure range.
Pressure Media: Clean dry air or other gases (non-condensable).
Accuracy Data
Accuracy
2
±
0.02% 3 FS at 70
°
F (21
°
C)
Non-Linearity
±
0.012% FS (End Point)
Hysteresis 0.010% FS
Non-Repeatability 0.010% FS
Thermal Effects 4
Compensated Range +32
°
F to 110
°
F (0 to +45
°
C)
Thermal Zero Shift
±
0.002% FS/
°
F (0.004% FS/
°
C)
Thermal Sensitivity Shift
±
0.001% FS/
°
F (0.002% FS/
°
C)
Altitude Resolution 1 ft. (4 ft. for 100 psi range)
Stability 0.005% FS, 24 hours
0.02% FS, 30 days
0.05% FS, 1 year
Output Data
Display 6 digit Liquid Crystal Display (LCD) with annunciators for
pressure/altitude engineering units (PSI, mbar, hPa, mmHg,
in.Hg, mmH
2
O, in.H
2
O, ft, m, units), HI/LO ALARM,
pressure signal stability (O.K.) and barometric pressure
corrected to sea level (SEA LEVEL).
Digital Output Bidirectional RS-232 interface. All display data can be
transmitted on the interface and all keyboard functions and
commands can be duplicated using a remote terminal or
keyboard.
Digial Interface Bidirectional RS-232 interface. Access data, functions, and
commands via an RS-232 compatible remote terminal data
acquisition system or data storage device. 300, 600, 1200, 2400,
4800, 9600 Baud Rate, adjustable.
Physical Data
Pressure Fitting 1/8" - 27 NPT internal.
Height 8.55 in./217 mm.
Width7.5 in./191 mm.
Depth7.2 in./183 mm.
Weight
12 lbs. with internal rechargeable battery pack
Power Cord 5 foot length, 3-prong grounding plug
Operating Power 110/220 VAC (-10% to +30%), 50/60 Hz., optional 12 VDC
internal rechargeable battery pack (approx. 8 hours
between charges). Approximately 4 watts power consumption.
Notes: 1. Altitude is calculated using a polynomial expression, which is derived from the standard
atmosphere curve, and corrected to sea level by the methods outlined in "Smithsonian
Meteorlogical Tables, Vole 114". Ranges greater than 20 psia not recommended for
altimeter certification.
2. RSS of Non-Linearity, Non-Repeatability and Hysteresis.
3. FS = 300 hPa/mb range; 500 hPa/mb for 600-1100 hPa/mb range
4. Unit calibrated at 70
°
F. Maximum thermal error is computed from this datum.
Model 370 Specifications