094900000B DCN8470
Teledyne API OPTI-Sense 5200
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4.
SYSTEM OPERATION
The unit is designed to be left powered on at all times. Refer to the zeroing instructions
presented next in Section 4.1.
ZEROING THE OPTI-SENSE
The unit should be fully warmed up and purged of SiF4 before zeroing. Nitrogen, Argon,
Oxygen or vacuum purge are acceptable. Note that the unit will not zero during the three-
minute warm-up time and will report an error if a zeroing request is received during the
warm-up period. (This error can be cleared by zeroing the unit once the warm-up period
is over.) The zero signal command is configured active low; the line must be held low for
at least 200 ms.
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Operating Voltage (HIGH): 24VDC ± 10%
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Operating Voltage (LOW): 0VDC Nominal, 4VDC Max.
Zeroing will take approximately five seconds during normal operation.
Zeroing the OPTI-sense unit is essential to establish a stable baseline reading. TAPI
recommends zeroing the unit as often as possible. In applications were baseline drift is
critical, zeroing before every measurement cycle might be required.
Internal volume of the unit is approximately 40 cc, a minimum of 10 volumes exchanges
is recommended before zeroing the OPTI-sense. Please note that internal volume of tubing
connected to the unit should be considered when calculating purge time and flow rate.
Note that the OPTI-Sense has analog output range 1-10 volt. After the sensor is zeroed,
the analog output will read one volt.
Summary of Contents for OPTI-Sense 5200
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