User Manual

Section 2 – General Specication listed above denes the required utilities needed for YARS operation. Also, refer to the

General Installation drawing provided specically for the YARS by serial number for the hook-up details.

4.1 Instrument Air

The media used by the Vortex air tube(s) is ISA grade Instrument air. Plant Nitrogen may be used in place of the air,

provided it meets the required pressure and ow demands of the YARS. The air shall be clean, dry (-40

C dew point),

oil free and contain particles <5µ. The instrument air pressure at the YARS shall be 60-100 psig (~ 4-7 Barg). Failure to

use a lter will cause potential freezing and clogging of the compressed air path inside the Vortex Tube. Filter elements

must be changed on a regular basis. Frequency of change is determined by the conditions of the compressed air

supply.

At pressure less than this, the Vortex tube performance declines signicantly and may be unable to provide the required

quantity of cooling air. Any instrument air-line run to the YARS in the eld should be 1/2” o.d. to ensure adequate ow at

the desired pressure.

Electronically controlled samplers use two vortex tubes, each typically with a 4 SCFM ow capacity (Check Data Sheets

for your installed model) however, the actual air demand during normal operation will vary depending on the changing

process and climatic conditions at each site.

CAUTION

• COMPRESSED AIR COULD CAUSE DEATH, BLINDNESS OR INJURY

• DO NOT OPERATE A VORTEX TUBE AT AIR PRESSURES ABOVE150PSIG (10.3 BARG)

• DO NOT OPERATE A VORTEX TUBE AT LINE TEMPERATURES ABOVE 110OF (43OC)

• AVOID DIRECT CONTACT WITH COMPRESSED AIR

• DO NOT DIRECT COMPRESSED AIR AT ANY PERSON

• WHEN USING COMPRESSED AIR, WEAR SAFETY GLASSES AND SIDE SHIELDS

The performance of the Vortex tubes is also based on the incoming instrument air temperature and therefore, for more

ecient operation, avoid direct sun light (and other heat emitting sources) when running the air-line.

4.2 Low Pressure Steam

The sampler is equipped with low-pressure steam injection valve located in the lower lter section. Steam may be used

either as an addition at the inlet (for assisted reux action), or for cleansing through either the inlet or outlet.

NOTE

Do not use steam temperatures in excess of 232

C (450

F).

Ensure the needle valves are closed prior to connecting the steam supply and ensure the steam supply line is adequately

insulated. Connect the steam supply directly to the needle valve supplied with the sampler.

NOTE

WHEN OPERATING WITH STEAM, NOTE THAT SURFACES MAY BE EXTREMELY HOT AND CAN CAUSE SEVERE BURNS

AND OTHER PERSONAL INJURIES – ADHERE ALL SAFETY PROCEDURES APPLICABLE AT SITE FOR STEAM SERVICES

- FAILURE TO DO SO COULD RESULT IN INJURY OR DEATH.

4. UTILITY REQUIREMENTS