Motorized pressure regulator SDU-5000 series

for waterspringsingle-stage

The SDU-5000 series offers unique and practical method of controlling pressure or vacuum electronically. This is accomplished by interfacing a stepping motor and gear box to a modified 800 or 900 series subminiature regulators. A calibration report included with every unit provides a detailed test data including a scale factor that corresponds to a slope that will yield a open loop accuracy including linearity, repeatability and hysteresis, of +/- 3% FS. The unit can also be interfaced with Airtrols 4103/4104 series spring biased comparators. SPECIFICATIONS OVERALL - ACCURACY - < +/- 3% FS BFSL including linearity, repeatability and hysteresis DIMENSIONS - 2.875″ x 2.125″ x 3.5″ (73 x 54 x 89 mm) WEIGHT - 8 oz (227 g) DRIVE UNIT - MOTOR TYPE - 15° bi-polar stepping COIL RESISTANCE - 36 Ohms/Phase RECOMMENDED CURRENT - < 170 mA / coil for 100% duty cycle GEAR RATIO - 20.83:1 TYPICAL STEP RATE - 200 steps / sec REGULATOR TYPE - Constant Bleed, Relieving WETTED MATERIALS - Polysulfone, Buna-N, EPDM, Acetal, Polyurethane, Stainless steel SUPPLY CONSUMPTION - < 9 SCIM (150 cc/min) @ 30 PSI (207 kPa) supply < 21 SCIM (350 cc/min) @ 100 PSI (689 kPa) supply EFFECT OF SUPPLY VARIATION - < 0.07 PSI (0.48 KPa) per 10 PSI (68.9 kPa) supply change when dead-ended REPEATABILITY - < +/- 0.1 PSI (0.69 kPa) when supply is removed and re-applied SENSITIVITY - 1″ H2O (0.25 kPa) RELIEF CAPACITY - 0.5 cu.ft./min. (14 LPM) with outlet 5 PSI (34.5 kPa) above set-point RECOMMENDED FILTRATION - 5 micron