Static differential pressure measuring instruments Pascal-ST/Z for low measurement ranges 0... +50 Pa oder 0... +200 Pa NOVASINA 2008
Agenda AGENDA Pascal-ST/Z series Measurement principle Highlights Technical data Installation Configuration Calibration & Adjustment Applications References Closing words 2 NOVASINA 2008
Pascal-ST/Z series Pascal-STS/Z Pascal-STVS/Z Monitoring & Visualisation Pascal-STD/Z Control Pascal-ST/Z series Pascal-STV/Z Control & Visualisation PascalTool-Win Configuration 2 alarm relays and LED displays STVS version with additional LC-display Automatic Zeropoint calibration Scalable, adjustable analogue output (V/mA) Digital signal output via RS-232 2 Alarm LED displays Automatic Zeropoint calibration Scalable, adjustable analogue output (V/mA) Digital signal output via RS-232 2 Alarm LED & LC-displays Automatic Zeropoint calibration Configuration software for Sensor & AO adjustment Alarm threshold setting Password setting and other configurations 3 NOVASINA 2008
Measurement principle STATIC MEASUREMENT PRINCIPLE Silicon membrane sensor dp inlet P1 (static) 4 embedded piezoresistive silicon layers Silicon diaphragm substrate dp outlet P2 (static) Strain of the piezoresistive silicon => Change of resistance => Electrical output => Differential pressure Advantage: due to a static dp mesurement, there is no need to compensate any connected hoses -> easy mounting and start-up of the system 4 NOVASINA 2008
Highlights PRODUCT HIGHLIGHTS Versatile in use -> Monitoring and controlling of differential pressures and air velocities Compact Design -> ideal for narrow spaces Accurate and reproducible measurements State-of-the-Art silicon membrane sensor technology No Zero-Drift -> automatic Zeropoint calibration Easy installation and start-up Adjustable dp sensor and signal outputs Password protection system Configurable and adjustable with Pascal-Tool WIN software 5 NOVASINA 2008
Technical data - 1 For all Pascal-ST/Z types Measurement range (uni-directional) Max. resolution Measurement interval (configurable) Accuracy at 20 C (FS = full scale) Temperature effect Hysteresis Offset-Drift Max. admissible overpressure TECHNICAL DATA 0... +50 Pa / 0... +200 Pa 0.1 Pa approx. 20 meas./sec. ± 0.6% of FS (0...+50Pa) ± 0.2% of FS (0...+200 Pa) < 0.01 Pa/ C (0...+50 Pa) < 0.03 Pa/ C (0...+200 Pa) ± 0.15 Pa (at constant temp.) ± 0.15 Pa (automatic zero point calibration) ± 20 000 Pa Operating temperature 5... 45 C 6 NOVASINA 2008
Technical data - 2 DEVICE SPECIFIC DATA Pascal-STS/Z & Pascal-STVS/Z 2 programmable alarm thresholds (< >) 0.01 49.99 / 0.01 199.99 Pa 2 relays (open & make contact) max. 48 V / 2 A and 60 W Protection Power supply Power consumption Options: External power supply IP 54 / EMC 10.5... 35 VDC max. 2.5 W 90... 260 VAC 7 NOVASINA 2008
Technical data - 3 Pascal-STS/Z & Pascal-STVS/Z setting TV1 Threshold value 1 >13 Pa TV2 Threshold value 2 HY1 Hysteresis value 1 HY2 Hysteresis value 2 DL1 Delay 1 DL2 Delay 2 ADJUSTABLE RELAY ALARM POINTS <5 Pa 2 Pa 1 Pa 0 s 5 s Pa Differential pressure DL1 = 0 13 A1 TV1 HY1 A1 A1 A1 A2 set Alarm 1 reset Alarm 1 set Alarm 2 5 A2 A2 HY2 TV2 A2 reset Alarm 2 DL2 DL2 Sec. 8 NOVASINA 2008
Technical data - 4 SIGNAL PROCESSING Membrane sensor Pascal-STS/V & Pascal-STVS/V Valve Alarm LED STATIC SENSOR WITH SILICONE MEMBRANE MICRO CONTROLLER RS 232 LINE DRIVER/ RECEIVER LEDs RELAYS PC-Communication Alarm 1 Alarm 2 Stat. dp Valve LC-DISPLAY (for STVS type) VOLTAGE REGULATOR Power supply 9 NOVASINA 2008
Technical data - 5 DEVICE SPECIFIC DATA Pascal-STD/Z & Pascal-STV/Z Analogue output (configurable & adjustable) Digital interface (ASCII-string or Complex Protocol) Protection Power supply Power consumption Options: External power supply 0... 10 V, 2... 10 V 0... 20 ma, 4... 20 ma RS232 IP 54 / EMC 10.5... 35 VDC max. 2.5 W 90... 260 VAC 10 NOVASINA 2008
Technical data - 6 SIGNAL PROCESSING Membrane sensor Pascal-STD/Z & Pascal-STV/Z Valve LC-DISPLAY (for STV type) STATIC SENSOR WITH SILICONE MEMBRANE MAIN CONTROLLER RS 232 LINE DRIVER/ RECEIVER DAC Digital output signal and PC-communication Analogue output signal Stat. dp Valve Alarm LED VOLTAGE REGULATOR Power supply 11 NOVASINA 2008
Technical data - 7 SUITABILITY FOR CLEAN ROOMS Compact design Protection IP 54 / EMC Resistant materials Smooth surfaces PBT housing (Polytetramethylenterephthalat) Avoids deposition of unwanted substances (e.g. bacteria) 12 NOVASINA 2008
Installation EASY AND QUICK INSTALLATION Hose diameter 4 6mm Nozzle e.g. clean room wall Ø4-6 M14 13 NOVASINA 2008
Configuration CONFIGURATION SOFTWARE Pascal-Tool WIN Capabilities Filter for measurement value detection Sensor adjustment with GAIN factor Conversion of differential pressure to air velocity Configuration and adjustment of the analogue output signal Alarm threshold, delay and hysteresis settings Zero point calibration runs on Windows (Windows 95, NT, 2000, XP or newer) Test function for analogue output Password protection function Selection of various measurement units for LC-Display (only for STV/Z & -STVS/Z types) 14 NOVASINA 2008
Calibration & Adjustment - 1 CALIBRATION & ADJUSTMENT with mobile calibrator Reference device Adjustment with GAIN calculator Novasina CALIBOX 100 portable dp calibrator Pascal-Tool WIN SW Test sample 15 NOVASINA 2008
Calibration & Adjustment - 2 CALIBRATION & ADJUSTMENT of a complete clean room installation on site Reference device Grey room Adjustment with GAIN calculator Clean room Pascal-Tool WIN SW Test sample 16 NOVASINA 2008
Applications - 1 Pharmaceutical Microbiological APPLICATIONS CLEAN ROOMS Microelectronic Semiconductor Chemical Medical Aerospace and many more 17 NOVASINA 2008
Applications - 2 Stand alone application Pascal-STS/Z / -STVS/Z - Cost effective - Integrated alarm functions - 2 programmable alarm thresholds with 2 galvanic isolated relay contacts - Easy installation Electrical connection Mini-Environment Filter and room pressure monitoring GND + 1 2 3 4 5 6 7 8 Power Alarm 2 Alarm 1 18 NOVASINA 2008
Applications - 3 Monitoring of Differential Pressure Limits Interface ) ( Pascal-STS/Z Pascal-STVS/Z dp PLC Bus Di Di Process visualisation Alarm output Possibility of life guarding Local configuration incl. password protection by Pascal-Tool WIN software 19 NOVASINA 2008
Applications - 4 Air velocity determination by conversion of differential pressure Fan Filter Unit Air intake V 2 x dp ρ A 1 A 2 2-1 Restricting orifice HEPA-Filter CG-diffuser V : air velocity (m/s) dp : pressure drop (Pa) ρ : density (air = 1.122 kg/m 3 *) A 1 : cross-section of air duct A 2 : cross-section of orifice * at 25 C and 960 hpa laminar Air flow 20 NOVASINA 2008
Applications - 5 Differential Pressure Control Pascal-STD/Z Pascal-STV/Z dp PLC or Industrial Control Ao Bus Ao U/I Ai Process visualisation and data recording Fan Unit 21 NOVASINA 2008
References REFERENCES 22 NOVASINA 2008
Closing words YOUR PROFESSIONAL PARTNER FOR ACCURATE MEASUREMENT OF DIFFERENTIAL PRESSURE AND AIR VELOCITY IN LOW MEASUREMENT RANGES! Thank you for your attention! 23 NOVASINA 2008