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SPECIFICATIONS
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Gas Type:
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O2
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Moisture
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TECHNOLOGY
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Coulometric non depleting electrochemical sensor
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Tuneable Laser Diode
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PERFORMANCE
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Maximum operating ranges:
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0-20ppm
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0-20ppm
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Smallest recommended output range:
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0-1ppb
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0-2ppb
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Intrinsic error (accuracy):
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+/- 3% of reading or +/- 0.1ppb (whichever is greater)
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+/- 3% of reading or +/- 0.2ppb (whichever is greater)
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Response time (T90):
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<15 seconds
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<3 minutes at 1 liter/min
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Zero drift/month:
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Negligible
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Negligible
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Span drift/month:
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Negligible
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Negligible
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Lower detection Limit (LDL):
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75ppt
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200ppt
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Upset recovery time:
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<5 minutes to return to within 10ppb of previous stable reading
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<5 minutes to return to within 10ppb of previous stable reading
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OUTPUTS/INPUTS
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Output:
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Isolated 4-20mA dc, for both moisture and oxygen, 0-1, 0-2, 0-5, or 0-10 VDC for both moisture and oxygen
(analog output can be configured to freeze during calibration)
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Output range:
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Scaleable to any range between 0-2ppb to 0-20ppm
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Audible/visual alarms:
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4 oxygen levels, 4 moisture levels, temperature, electrolyte condition, moisture sensor diagnostic, loss of flow, zero verification, or calibration in process, moisture analyzer off-line, oxygen analog output freeze control during calibration
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Dual scale range:
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Two user selectable secondary analog output ranges for rescaling the output once the primary range is exceeded
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Relay contacts:
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4 non-latching, independently assignable to oxygen alarms or oxygen calibration-in-process indicator, and
4 non-latching, independently assignable to moisture alarms. SPDT contacts rated for 5 amps at 30V dc.
Up to 4 non-latching, independently assignable to alarms or indicators. SPDT contacts rated for 1amp at 30V dc.
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Serial communications:
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Factory configured RS232 or RS 485 two-way serial communications
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Gas scale factor:
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Background gas compensation for gases other than N2
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Gas delivery system:
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Pneumatically actuated springless diaphragm valves, orbital butt welded assembly with zero dead volume for sensor isolation and zero verification. High capacity purifier provides moisture and oxygen-free zero (not compatible on oxygen samples). Heated and temperature controlled sample delivery system. Integral pressure regulator with minimal wetted area. Bypass loop with flow control. 1⁄4” VCR inlet fittings, 1⁄4” compression bypass outlet fitting, 1⁄4” compression outlet fitting to vacuum source, 1⁄8” compression fitting for pneumatic gas inlet
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Aspirator vacuum source:
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Aspirator with ¼” compression inlet and outlet fittings
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Mounting:
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19” rack mount NEMA 1 enclosure
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OPTIONS
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Pump vacuum source:
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Pump with ¼” compression inlet and outlet fittings
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Hydrogen safety system purge:
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Optional safety system for use with hydrogen includes Sample Delivery Interlock and Case Purge Valves for instrument housing, NEMA 4 enclosure and Z purge protection system for optional external vacuum pump. Hydrogen safety system can be ordered with or without the NEMA 4 enclosure and Z purge protection system for the optional vacuum pump (NOTE: hydrogen safety system limits available relays from 4 to 3)
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SAMPLE GAS
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Temperature:
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50°F to 176°F (10°C to 80°C ) Recommended heated sample line to 140°F (60°C)
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Dewpoint:
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9°F (5°C) below minimum ambient
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Condition:
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Oil free, non-corrosive, non-condensing
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Particulates:
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Filtered to 2µm
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Vent pressure:
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Vent to atmosphere.
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Sample flow:
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2 to 5 l/min (For nitrogen only ) - contact Servomex for other background gases
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Bypass flow:
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0.25 to 2.5l/min
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Sample pressure:
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30 to 150psig (3.08 to 11.3 BarA)
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