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DigiPort - Paroscientific

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1. 1 4 ID HOSE TYPICAL TRIPOD NOT INCLUDED BAROMETER 1 4 ID HOSE 1 4 HOSE ADAPTER SUGGESTED TRAP POST NOT INCLUDED MOISTURE TRAP Fig 4 Assembly Overview ASSEMBLY OVERVIEW 4 1 5 INSTALLATION This section discusses installation of the DigiPort and connecting it to a Paroscientific Digiquartz barometer 5 1 Mounting the DigiPort Install the mounting bracket of the DigiPort on a pole not more than 2 inches in diameter Be sure the mounting fixture and structure are capable of securely supporting the DigiPort under adverse weather conditions The DigiPort must be installed in a vertical orientation as shown below This position will assure optimum performance of the port 2 INCHES 5 1 CM N MAX DIAMETER 4 FEET 1 2 MINIMUM N M NUT REQUIRES 7 16 WRENCH LO GROUND ERI Figure 5 1 DigiPort Mount Install the unit in a location where the ports remain unobstructed Maintain at least one foot of clearance in all directions and at least four feet of clearance from the ground Obstruction of the ports may result in erratic performance The distance from the port to the top of the mounting post should be at least 10 times the diameter of the post Tighten nuts with a 7 16 wrench INSTALLATION 5 1 5 2 Installing the Hose and Moisture Trap It is essential to install the provided Moisture Trap to prevent any condensation from obstru
2. 3 6 gt MAINTENANCE 3330 6 1 6 1 BAROMETER PORT INLET CLEANING ii 6 1 6 2 CLEARING THE MOISTURE TRAP 6 2 qe TECHNICAL SUPPORT ves Pacco ree 7 1 TABLE OF CONTENTS i 1 INTRODUCTION The Paroscientific DigiPort is a High Performance Pressure Port that serves as a termination device permitting Digiquartz barometers to accurately measure the true atmospheric pressure in the presence of wind According to the World Meteorology Organization A barometer will not give a true reading of the static pressure if it is influenced by gusty winds Its reading will fluctuate with the wind speed and direction At sea error is always present due to the ship s motion A similar problem will arise if the barometer is installed in an air conditioned room Air conditioning may create a pressure differential between the inside and outside of a room Therefore if a barometer is to be installed in an air condition room it is advisable to use a static head with the barometer These dynamic fluctuations are superimposed on the static pressure and with a strong and gusty wind may amount to 2 or 3 hPa It is usually impractical to correct for such fluctuations because the pumping effect on the mercury surface is dependent on both the direction and the force of the wind as well as on the local circumstances of the barometer s location Thus the m
3. diameter 7 0 in 18 cm Outer disk spacing 2 8 in 7 cm Weight 5 Ib 2 3 Kg maximum Operating Temperature 50 C to 460 C 58 F to 4140 F with optional hose Humidity 0 100956 condensing and non condensing Rain Self draining holes protected from rain Condensation Moisture Trap provided Ice and biological Multiple redundant holes keep port open contamination PRODUCT SPECIFICATIONS 2 1 7 0 s 33 CM POLE POST 2 0 5 1 CM MAX DIAMETER NOT INCLUDED 9 9 25 CM Fig 2 Port Dimensions PRODUCT SPECIFICATIONS 2 2 di ITEMS INCLUDED WITH THE DIGIPORT 1 4 Hose to 1 8 A Lok Adapter see table below mmn 1 4 Hose to 1 4 Tube Adapter 1 4 ID Parker Moisture Trap see table below Push Lok Hose Port Assembly see table below 3 1 DigiPort Part Number Configurations Items included with the DigiPort are dependent on the part number ordered as shown in the following table Part Number Hose Included Adapter s Included 1745 000 None 765 16B 1 4 Hose to 1 4 Tube 1745 003 3 Meters 760 16B Adapter 1745 005 5 Meters 1745 010 10 Meters 1745 100 None 1000 16B 1 4 Hose to 1 8 A Lok 1745 103 3 Meters 6000 16B Adapter 1745 105 5 Meters 745 16B 1745 110 10 Meters 740 16B Included hose is 1 4 Parker Push Lok Hose ITEMS INCLUDED WITH THE DIGIPORT 3 1 4 ASSEMBLY OVERVIEW DIGIPORT dE va
4. DAPTER INCLUDED WITH DIGIPORT 1 8 A LOK saromerer 7 Fig 5 3 2 1 8 A Lok Connection Attach the adapter to the barometer and press the hose all the way onto the barbed hose fitting INSTALLATION 5 4 6 MAINTENANCE The DigiPort is a highly reliable instrument designed to operate for a long period of time without the need for maintenance Ensuring that the DigiPort remains clean and debris free will ensure the greatest overall performance Periodic cleaning of the port inlets and ensuring an unobstructed path at the moisture trap are the only recommended maintenance items for this unit 6 1 Barometer Port Inlet Cleaning Clear out any debris that has collected between the upper and lower plates including the adjacent orifice plates Check that flow is not obstructed through the port assembly If flow is obstructed disassemble the upper plate and upper orifice plate by unscrewing the 7 16 20 UNF flat head socket screw on top of the port Use a 5 16 Allen hex wrench This provides access to both orifice plates and the interior of the upper end of the column See Figure 6 1 below 7 16 20 UNF SCREW USE 5 16 HEX ALLEN WRENCH UPPER PLATE UPPER ORIFICE PLATE Fig 6 1 Remove any debris from the various orifices and reassemble applying a small amount of thread locking compound to the screw Torque the screw to 25 inch lb to secure the assembly MAINTENANCE 6 1 6 2 C
5. Paroscientific Inc Digiquartz Pressure Instrumentation User s Manual For DigiPort High Performance Pressure Port For use with Digiquartz amp Barometers The standard by which other standards are measured Technology DIGIQUARTZ PRECISION PRESSURE INSTRUMENTS USER S MANUAL FOR DIGIPORT HIGH PERFORMANCE PRESSURE PORT FOR USE WITH DIGIQUARTZ BAROMETERS DOCUMENT NO 8007 001 REVISION C SEPTEMBER 2012 Please visit www Paroscientific com for the latest manual revisions COPYRIGHT 2012 PAROSCIENTIFIC INC Table of Contents d INTRODUCTION one esie eS 1 1 2 PRODUCT SPECIFICATIONS ccssssccssccssscccccccssscsssccccccsssssssccceseeeses 2 1 2 1 PERFORMANCE CHARACTERISTICS 2 1 2 2 PHYSICAL CHARACTERISTICS 2 1 3 ITEMS INCLUDED WITH THE 2 3 1 3 1 DIGIPORT PART NUMBER 8 3 1 4 ASSEMBLY OVERVIEW sccscccsccsssscsssccccccsssscssccsssscssscccssesssscscccsseesees 4 1 5 r INSTALLATION 5 1 5 1 MOUNTING THE 222212121 2 2 2 640000000000000002225 000044 034 5 1 5 2 INSTALLING THE HOSE AND MOISTURE TRAP 5 2 5 3 CONNECTING TO THE DIGIQUARTZ BAROMETER 5
6. cting air passage through the hose Position the barometer and the DigiPort and route the connecting hose in such a way that ensures there is a single low point in the connecting hose for condensed moisture to collect Locate and install the Moisture Trap at that point Failure to do so may result in damage to the barometer and or inaccurate pressure readings If possible locate the moisture trap in an area that is protected from harsh conditions If the trap will be installed outdoors it is recommended that it be secured to something fixed such as the stake depicted in Figure 5 2 Vie TO BAROMETER FROM DIGIPORT Fig 5 2 Moisture Trap Using a sharp cutting tool cut an appropriate length of 1 4 ID hose such that it will comfortably reach between the port and the trap without having low spots where condensation could collect Cut a second length of hose to connect between the trap and the Digiquartz barometer port in a similar manner Push the ends of each length of hose over the barbed ends of the Moisture Trap wye until they are seated securely Other than the Moisture Trap being vertical orientation is not important NOTE A compliant 1 4 ID inside diameter hose is needed for installation You may need to obtain an appropriate hose if your configuration did not include one For reference the standard hose included with the DigiPort is a Parker Push Lok 801 4 Color Coded Hose Any similar h
7. ean value does not only represent the true static pressure When comparing barometers the possibility of a difference in readings due to the wind effect should be borne in mind Accurate measurements of barometric pressure require an environmentally rugged pressure port design that minimizes pressure errors under dynamic wind conditions Wind tunnel and field tests of the DigiPort show superior performance over all other ports Barometric readings with the DigiPort easily meet the requirements of GPS Meteorology Weather Stations Digital Altimeter Setting Indicators High Resolution Measurements of Atmospheric Waves and Aircraft Wake Turbulence Detection Please access Paroscientific website at http www paroscientific com to obtain a copy of the test report comparing various pressure ports in a wind tunnel test Guide to Meteorological Instruments and Methods of Observation WMO No 8 INTRODUCTION 1 1 2 PRODUCT SPECIFICATIONS The DigiPort product is defined by Specification Control Drawing 7010 001 Specifications are subject to change without notice 2 1 Performance Characteristics Wind Dependence Wind Speed Max Wind Effect 5 meters sec 10 knots 0 01 hPa 10 meters sec 20 knots 0 03 hPa 20 meters sec 40 knots 0 12 hPa Wind speed tested 0 to 60 meters sec 120 knots Wind Pitch or tilt range 25 2 2 Physical Characteristics Material Aluminum with polyurethane white surface Outer disk
8. learing the Moisture Trap Although unlikely it is possible for the hose to become obstructed if a sufficient amount of condensed moisture or airborne contamination accumulates in the moisture trap As needed unscrew the jar from the lid of the moisture trap to remove any such accumulation The connecting silicone tubing may also be detached from the hose wye and rinsed clean as needed MAINTENANCE 6 2 7 TECHNICAL SUPPORT For additional technical support please contact an application engineer at Paroscientific Inc 4500 148th Ave Redmond WA 98052 USA Tel 425 883 8700 Fax 425 867 5407 Internet www paroscientific com Email support paroscientific com TECHNICAL SUPPORT 7 1 Paroscientific Inc 4500 148 Avenue Redmond WA 98052 USA Tel 425 883 8700 Fax 425 867 5407 http www paroscientific com Doc Number 8007 001 Rev C E mail support paroscientific com Paroscientific Inc 2007
9. ose is acceptable INSTALLATION 5 2 5 3 Connecting to the Digiquartz Barometer An adapter is required to connect the 1 4 ID hose to the port of a Paroscientific Digiquartz barometer Paroscientific barometers use one of two kinds of ports as depicted in the following table Digiquartz Barometer Model Port Type Model 765 16B Model 760 16B Swagelok 1 4 VCO See para 5 3 1 Model 1000 16B Model 6000 16B Model 745 16B Model 740 16B Parker 1 8 A Lok See para 5 3 2 5 31 For barometers with a 1 4 VCO fitting an adapter is provided to join 1 4 tubing to 1 4 hose This requires the use of the 1 4 VCO to 1 4 Tube Adapter accessory that is included with these barometers pictured below Fig 5 3 1a Tube Adapter Models 760 amp 765 Use this adapter with the provided barbed hose adapter to connect the hose to the barometer as shown below 1 4 VCO TO 1 4 TUBE ADAPTER INCLUDED WITH MODELS 765 760 1 4 VCO 1 4 TUBING TO 1 4 HOSE ADAPTER INCLUDED WITH DIGIPORT gt C mpo dt IE eem C Fig 5 3 1b VCO Connection Attach the adapters to the barometer and press the hose all the way onto the barbed hose fitting INSTALLATION 5 3 5 3 2 For barometers with a 1 8 A Lok fitting a two piece adapter is provided to join a 1 8 A Lok fitting to 1 4 Hose as shown below 1 8 A LOK TO 1 4 HOSE A

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