Atec Endevco-8507C Series - Manual (Page 2)

Model 8507C
Piezoresistive pressure transducer
Specifications
The following performance specifications conform to ISA-RP-37.2 (1964) and are typical values, referenced at +75˚F (+24˚C), 100 Hz and 10 Vdc
unless otherwise noted. Calibration data, traceable to National Institute of Standards and Technology (NIST), is supplied.
Units 8507C-1 -2 -5 -15
Range [1] psig 0–1 0–2 0–5 0–15
Positive sensitivity [2] mV/psi 200 ±50 100 +50/-20 60 ±20 20 ±7
Combined: Non-linearity,Non-repeatability,
Pressure hysteresis [3]
% FSO RSS max 1.5 1.5 0.75 0.50
Non-linearity, independent % FSO typ 1.5 1.0 0.50 0.20
Non-repeatability % FSO typ 0.1 0.1 0.1 0.05
Pressure hysteresis % FSO typ 0.1 0.1 0.1 0.1
Zero measurand output [4] mV max ±10 ±10 ±10 ±10
Zero shift after 3x range ±% 3x FSO max 0.2 0.2 0.2 0.2
(typ) (0.02) (0.02) (0.02) (0.02)
Thermal zero shift
From 0°F to 200°F (-18°C to +93°C)
±% FSO max 3 3 3 3
Thermal sensitivity shift
From 0°F to 200°F (-18°C to +93°C)
±% max 4 4 4 4
Resonance frequency Hz 55,000 70 000 85 000 130 000
Non-linearity at 3x range % 3x FSO 2.5 2.5 2.0 1.0
Thermal transient response per psi/°F 0.003 0.003 0.003 0.003
ISA-S37.10, Para. 6.7, Procedure I [5] psi/°C 0.005 0.005 0.005 0.005
Photoflash response [6] Equiv. psi 0.01 0.01 0.03 0.1
Warm-up time [7] ms 1 1 1 1
Acceleration sensitivity Equiv. psi/g 0.0002 0.0002 0.0002 0.0002
Burst pressure (diaphragm/reference side) psi min 20/20 40/40 100/50 150/50
Electrical
Full scale output 300 ±100 mV at 10.0 Vdc
Supply voltage [8] 10.0 Vdc recommended, 18 Vdc maximum
Electrical configuration Active four-arm piezoresistive bridge
Polarity Positive output for increasing pressure into (+) port (end with screen on it)
Resistance
Input
2000 ±800 ohms
Output 1600 ±500 ohms
Isolation 100 megohms minimum at 50 volts; leads to case, leads to shield, shield to case
Noise 5 microvolts rms typical, dc to 50 000 Hz; 50 microvolts rms maximum, dc to 50 000 Hz
Mechanical
Case, material Nickel - iron alloy
Cable, integral Four conductor No. 36 AWG Teflon ® insulated leads, braided shield, PVC jacket, 30 ±3 in (760 ±76 mm)
Dead volume (+) port 0.00005 cubic inches (0.0008 cc)
Mounting Bond into #38 drill hole (2.6 mm) using an RTV such as DOW CORNING Silastic ® 738;
RTV not permitted within 0.10 inch (2.5 mm) of unit’s face.
Weight 0.3 gram (cable weighs 3.6 grams/meter)
Environmental
Media Internal seals are epoxy and are compatible with clean dry gas media. Media in (+) measurand port
is exposed to nickel-iron alloy, silicon, ceramic, Parylene C, and epoxy. Media in (-) measurand port
is exposed to the above and RTV silicone coating. For use in water or corrosive media, contact the
factory for modifications and installation precautions which may be taken to extend service life.
Temperature [9] -65°F to +225°F (-54°C to +107°C)
Vibration 1000 g pk
Acceleration 1000 g
Shock 10 000g, 100 microsecond haversine pulse
Humidity Isolation resistance greater than 100 megohms at 50 volts when tested per MIL-STD-202E,
Method 103B, Test condition B.
Specifications continued on next page