Intelligent Pressure Standard ISO-9001 Certified QuartzonixTM Pressure Standard Model 970 FEATURES ! Ranges: Barometric and 0-15 through 0-500 psia (0-115 kPa through 0-3400 kPa) ! ! Better than 0.01% FS Accuracy ! ! RS-485/RS-232 interface ! Available with Oil-filled Capillary Tube for Water Level Measurement Long term stability better than 0.01% FS per 6 months Pressure output in choice of engineering units APPLICATIONS ! ! ! ! Meteorological and barometric reference Low cost, high accuracy pressure standard Pressure calibration equipment Storage tank/liquid level determination Model 970 Intelligent QuartzonixTM Pressure Standards incorporate proven high accuracy vibrating quartz beam technology with low power miniature digital electronics to achieve a fully compensated 0.01% FS pressure measurement. QuartzonixTM pressure standards use a patented monolithic quartz structure and vibrating beam to measure pressure-induced stress. The beam's frequency of vibration changes by pressure induced stress that is applied to the beam via a miniature metal bellows. The bellows isolates the quartz sensing element from the applied gas, thereby making the sensor insensitive to gas density. The Intelligent QuartzonixTM has a resolution of up to .00007% FS, and drift rates of less than 0.01% FS over a 6-month period. The Model 970 uses a multi drop, 9600 baud ASCII character RS-485 type interface, allowing a network of up to 31 transducers on the same bus. The 970 can also be configured by the user for RS-232 communication. The measurement units and the update rate are both user-programmable. The 970 is capable of up to 12 readings per second. The extremely low power consumption design with a programmable sleep mode makes the Intelligent QuartzonixTM ideal for remote battery powered applications. Pressure Systems, Inc. A Weston Company of The Roxboro Group PLC 34 Research Drive Hampton, VA 23666 USA Phone: (757) 865-1243 Toll Free: 800-328-3665 Fax: (757) 865-8744 E-mail: sales@PressureSystems.com Web: PressureSystems.com Updates: PressureSystems.com/updates.html E-commerce: LEVELandPRESSURE.com PSI Ltd. 124, Victoria Road Farnborough, Hants GU14 7PW United Kingdom Phone: +44 1252 510000 Fax: +44 1252 510099 E-mail: psi@westonaero.com Specifications Model 970 Parameter 970 Units Comments PNEUMATICS Pressure Ranges 11-16 15 23 30 45 65 100 200 300 500 (76-110) (105) (160) (210) (310) (450) (690) (1380) (2070) (3400) psia (kPa) Proof Pressure1 1.5 x FS Burst Pressure2 2.0 x FS Pressure Media Media compatible with 316SS nickel and solder Pressure Fitting c" compression Barometric only PERFORMANCE Resolution / Repeatability 0.00007 to 0.0018 % FS User programmable 0.7 to 12.1 updates/sec User programmable Static Accuracy 0.01 % FS Maximum Deviation over Temperature 0.015 % FS over specified temperature range Thermal Hysteresis4 0.005 % FS over specified temperature range Long Term Drift 0.01 % FS 6 months, maximum 5 to 12 VDC Nominal 7.0 mA (4.0 mA sleep mode) Update Rate 3 ELECTRICAL Input Voltage Electrical Connection Turn on Time 10 pin circular connection intermateability dimensions in accordance with MIL-C-26482 (Ref MS3113) 300 m sec Calibrated Temp Range 0 to 60 (-20 to 70 optional) C Acceleration Sensitivity 0.004 %FS/g worst axis Vibration Sensitivity 0.001 %FS/g 20g peak, 10 Hz - 2 kHz 4.25 x 1.25 dia (10.8 x 3.18 dia) inches (cm) 200 g/10mS 8.3 (235) oz (gms) ENVIRONMENTAL / PHYSICAL Dimensions Maximum Shock Weight Notes: 1 2 3 4 1/2 sine Maximum applied pressure without causing a calibration shift. Maximum applied pressure without causing permanent damage to quartz sensing element. Calibration conformance to a primary pressure standard after calibration. Maximum error at 25C after exercising 970 to either operating temperature extreme. Specifications subject to change without notice. -2- Operational Features Operation Model 970 Command String Notes USER CONFIGURATION Set pressure units $<node add.>SU n<CR> where n=1,2,3,or 4 for psia, kPa, hPa, inHg Save defaults $<node add.>SD<CR> Saves users defined settings Clear defaults $<node add.>SC<CR> Restores factory settings Recalibration, zero offset only $<node add.>CS<applied pressure> <CR> Adjust for zero drift Recalibration, offset and span $<node add.>CL<low pressure><CR> $<node add.>CH<high pressure><CR> Two point offset and span adjustment Clear recalibration $<node add.>CC<CR> Restores factory set calibration Ask for type and pressure range $<node add.>TT<CR> Returns Model, range and firmware version Ask for serial number $<node add.>TS<CR> Returns S/N, sensor no. calibration number Status request $<node add.>ST<CR> Returns system status and details of any sub-system faults Single pressure reading $<node add.>MR<CR> Returns a single pressure reading Continuous pressure reading $<node add.>MC<CR> Returns a pressure reading stream Stop cont. pressure reading Any character Stops pressure reading stream Request pressure units $<node add.>MU<CR> Returns the set pressure unit Temperature measurement $<node add.>MT<CR> Returns internal temperature Go into low power (LP) mode $<node add.>LP<CR> Shuts down sensor Restore normal operation Any above command Wakes up unit from LP mode IDENTITY MEASUREMENT WARNING MESSAGES The 970 will report a warning if it is being operated outside of its normal pressure or temperature range. This is transmitted as an additional string after a single or continuous pressure reading. PLIM Operation is outside calibrated pressure range and will be in error RCAL Operation is close to, or exceeding derangement pressure limit TLIM Operation is outside calibrated temperature range and will be in error FAIL Fault in the system. -3- Model 970 Ordering/Part Number Information Ordering Information: 970A-AAAABCDEFF Model 970 Intelligent Pressure Standard, 0.01% FS Accuracy AAAA = Pressure Range BARO, 11-16 psia 0015, 15 psia 0023, 23 psia 0030, 30 psia 0045, 0065, 0100, 0200, 45 psia 65 psia 100 psia 200 psia 0300, 300 psia 0500, 500 psia B = Pressure Fitting 1, c" compression fitting C = Electrical Termination 2, 10 pin circular D = Pressure Calibration 1, Standard E = Calibrated Temperature Range 1, 0 to 60C 2, -20 to 70C FF = Specials 00, Standard 10, Oil-filled capillary tube No.0502 -4-