Instruction Manual - Forestry Suppliers, Inc.
Contents
1. refer to parts list One or two extra WICKS may be kept in END CAP and will help retain moisture longer Pack WICKS loosely to allow thorough water Instruction 0012 9015 saturation and ample water supply to the WET BULB THERMOMETER THERMOMETERS D and F are re placeable by backing off SCREWS G and loosening THERMOMETER CLIPS H To separate BODY C and TUBE E drive ROLL PIN I out of eye in PLUG AND SWIVEL ASSEMBLY which then may be slid out back end of TUBE2. A Registered Trademark ISO 9001 2008 1 Remove cap im merse end of body to saturate wick ee 2 Fill psy chrometer reservoir with water Replace cap 3 Be sure wick covers wet bulb the other bulb is dry 4 Pull body from tube until body hangs free 5 Use tube as handle whirl body about 1 12 minutes DRY BULB Read wet amp dry bulb ther mometers replace body in Set thermometer readings on upper two calculator scales 60 WET BULB 70 rrrytrtr iiir itirf DRY BULB 80 20 30 40 F459 8 Read relative humidity as indicated by arrow Instruction 0012 9015 OPERATION Before Using WICK A should be thoroughly saturated with water Remove END CAP B and im merse PSYCHROMETER BODY C up to mercury or red spirit reservoir on the ther mometers until WICK is thoroughly wetted Fill END CAP with water and replace tighten just enough to prevent leakage To Use 1 Be sure WICK A is wet and covers mer cury or red spirit reservoir on WET BULB THERMOMETER D Be sure reservoir on other THERMOMETER F is dry 2 Pull TUBE E clear of BODY so BODY can swivel 3 Holding TUBE whirl body two to three revolutions per second 120 to 180 RPM 4 Continue whirling until temperatures stabilize 1 minutes is usually ample 5 Immediately read WET BULB THER MOMETER D and then DRY BULB THERMOMET
3. ER F See application instructions 6 Set wet and dry bulb temperatures op posite each other on side rule type calcu lator scales sliding BODY into TUBE as required 7 Read R H percent relative humidity indicated by arrowhead on lower scale APPLICATION Wet bulb temperatures should be read first and as quickly as possible for highest ac curacy Delay in reading may cause error In addition the wick must be kept clean satu rated with water and whirled long enough to stabilize temperatures The range of the psychrometer is from 10 to 100 R H for dry bulb temperatures of 30 to 100 F 5 to 50 C In addition to the above instructions barometric pressure and other factors will influence exact relative humidity determin ations to a very minor degree For precise work use a psychrometric chart or set of tables such as W B No 235 Psychrometric Tables for Obtaining the Vapor Pressure Relative Humidity and Temperature of Dew Point which can be purchased from the Superintendent of Documents United States Government Printing Office Washington D C The accuracy of the Psychrometer however is satisfactory for all except the most exacting work MAINTENANCE WICK A should be kept clean when dirty cut off WICK below WET BULB THER MOMETER D and pull clean section out of END CAP B and slide over bulb on WET BULB THERMOMETER A WICK REPLACEMENT KIT may be pur chased separately
4. PARTS LIST Part No Description Qty per Assembly 0012 7011 0012 7012 0012 7013 0012 7043 0012 0180 Plug and Swivel Assembly 0 1 1 1 1 0012 0176 Thermometer Clip eececsccsccsccscessrses 2 2 2 2 0012 0007 WiCK ccssisssesssancosiecseshassesatacessdoesannannaesnneas 1 1 1 1 0002 1740 SCrewW ad acncscentawementinixtexaortanabedsoerncemnecteniauas 2 2 2 2 0002 6858 Roll Pin dcecascacscscniesincensiniectatadasadcatentases 1 1 1 1 0006 5456 CAD siisanessacsisccnenresnssardavesaiselasavioniectwaseorsnas 1 1 1 ji 0012 0012 Friction Ring ssessceessesscesrrsrrerrrrereseens 2 2 2 2 0012 0194 Body 0F eeeseeeeseeeesreerreserererrrrsrressee 1 1 0012 0018 Body CC scsssscascacssaaisivecstiaconiacsisiscsdatecs ji 1 0012 0006 Tube F eeeeeeeeerrserrersrrrerrrerrereee 1 1 0012 0019 Tube C scssesceeseeeerrserressreserrresresese 1 1 0012 0267 Thermometer 30 to 110 F Mercury 2 0012 0266 Thermometer 30 to 110 F Red Spirit 2 0012 0265 Thermometer 5 to 50 C Mercury z 2 0012 0327 Thermometer 5 to 50 C Red Spirit 2 Accessories 0012 0011 Wick Replacement Kit containing e eesscseseesceercsesrrrcrsrrrsrrrsrreeerss 4 Wicks 12 0006 12 0012 7 S loge 9 12 0265 12 0266 12 0267 12 0327 12 0018 12 0194 12 0265 mi CTT E 12 0266 AATA 12 0267 Re 02 1740 w 02 1740 ae 12 0327 12 0007 12 0176 12 0176 4 Instruction 0012 9015 The Mea
5. surable Difference INSTRUCTION 0012 9015 SLING PSYCHROMETER Part Numbers 0012 7011 30 to 110 F Mercury Thermometer 0012 7013 5 to 50 C Mercury Thermometer 0012 7012 30 to110 F Red Spirit Thermometer 0012 7043 5 to 50 C Red Spirit Thermometer Rev 5 May 2010 CAUTION Damage to thermometers or plastic case will result if instrument is ex posed to direct sunlight or excessive heat for prolonged periods WARRANTY Bacharach Inc warrants to Buyer that at the time of deliv ery this Product will be free from defects in material and manufacture and will conform substantially to Bacharach Inc s applicable specifications Bacharach s liability and Buyer s remedy under this warranty are limited to the repair or replacement at Bacharach s option of this Product or parts thereof returned to Seller at the factory of manufacture and shown to Bacharach Inc s reasonable satisfaction to have been defective provided that written notice of the defect shall have been given by Buyer to Bacharach Inc within one 1 year after the date of delivery of this Product by Bacharach Inc For full details concerning this warranty contact Bacharach Inc Register Your Warranty On line www mybacharach com World Headquarters 621 Hunt Valley Circle New Kensington PA 15068 Ph 724 334 5000 Fax 724 334 5001 Toll Free 800 736 4666 Website www mybacharach com E mail helo mybacharach com Printed in U S
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