2019-DCB Users Guide 5B2302.vp
Contents
1. Hart Scientific 2019 DCB Liquid In Glass Thermometer Calibration Kit User s Guide Rev 5B2302 Fluke Corporation Hart Scientific Division 799 E Utah Valley Drive American Fork UT 84003 9775 USA Phone 1 801 763 1600 Telefax 1 801 763 1010 E mail support hartscientific com www hartscientific com Subject to change without notice e Copyright 2005 Printed in USA Rev 5B2302 Table of Contents 1 Before You Start 1 1 1 Symbols Used o ee we ee ee e 1 1 2 Safety Information 2 1 2 1 WARNINGS vis caos og Bae He a eA ee Sh ES ag 3 2 1 2 2 CAUTIONS cuco dia de a dad a do 3 1 3 Authorized Service Centers 3 2 Introduction 7 2 1 DESCHPHOM uas r 2 do Be a Ra eR 7 2 1 1 Carousel ms soe ee eas ade es daa Caw se d 7 2 1 2 ACCESS COVERS mc a o rd a Wed BO Wea Rk e do 7 2 1 3 Flow Tube AA hee a nee ae Mn ee er ee eae i 9 2 1 4 Flow Adjustment Gates gaa dia a Ae ae hu re AGE 9 3 Installation ss se secs ss sun ka see ess a Il 4 Operations ss sa cw SK ee remuer ses Oe DAS 5 Maintenance ses 54 6 ee oie lr ae wee 17 5 1 Removal of the 2019 DCB 17 6 Disclaimer 19 Figures Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6 2019 Assembly lt lt ca ra RE EARS LS ee d 8 Flow Adjustment Gate 44 06 So ee ee ae dede 92. Slide the flow tube over the stirring assembly outlet 11 Inside Bath Tank o 4 4 ske ca danse a 12 2019 Assembly in Place with Optional Magnifying Scope 13 Thermometer Holding Carousel 13 1 Before You Start Symbols Used 1 1 Before You Start Symbols Used Table 1 lists the International Electrical Symbols Some or all of these symbols may be used on the instrument or in this manual Table 1 International Electrical Symbols Symbol Description NU AC Alternating Current PS AC DC Battery CE Complies with European Union Directives Mm MA DC Double Insulated Electric Shock Fuse PE Ground Hot Surface Burn Hazard Read the User s Manual Important Information Off On OPPOUPH 2019 DCB L I G Thermometer Calibration Kit User s Guide Symbol Description CAT II Canadian Standards Association US OVERVOLTAGE Installation CATEGORY II Pollution Degree 2 per IEC1010 1 re fers to the level of Impulse Withstand Voltage protection provided Equipment of OVERVOLTAGE CATEGORY II is energy consuming equipment to be supplied from the fixed installation Examples include household office and laboratory appliances The European Waste Electrical and Electronic Equipment WEEE Directive 2002 96 EC mark C TIC Australian EMC Mark 1 2 Safety Information Use this instrument only as specified in this manual Otherwise the prot
3. place the instrument under a cabinet or other structure Always leave enough clearance to allow for safe and easy insertion and removal of probes e The instrument is intended for indoor use only BURN HAZARD e Metal parts of this accessory will be the same temperature as the bath fluid DO NOT touch the metal parts of the accessory Only touch the black plastic handles provided e Hot fluids may be present The technician must be careful to avoid any hot fluid that might be accessible when rotating the carousel e Extremely cold temperatures may be present in this equipment Freezer burns and frostbite may result if personnel fail to observe safety precau tions e High temperatures may be present in this equipment Fires and severe burns may result if personnel fail to observe safety precautions BATH FLUIDS e Fluids used with this accessory may produce noxious or toxic fumes un der certain circumstances Consult the fluid manufacturer s MSDS Mate rial Safety Data Sheet Proper ventilation and safety precautions must be observed e Utilization of a vent hood or other ventilation system is required for sili con oil at high temperatures 1 2 2 CAUTIONS e DO NOT turn on the bath used with this accessory without fluid in the tank and the heating coils fully immersed e The gate must always be set to its lowest position while making tempera ture changes to prevent overflowing the access cover e When taking the ada
4. 019 Assembly in Place with Optional Magnifying Scope 13 4 Operation Operation 2019 DCB With the adapter properly installed and the gate all the way down the bath may be turned on The gate must be down to prevent flooding over the top of the access cover by an improper setting for the conditions The ideal set ting will be different with different fluids at different temperatures and at dif ferent bath fluid levels Be sure the fluid is at the maximum level and that the fluid expansion reservoir is empty or sufficiently low to contain any excess fluid created over the calibration range Temperature measurements are gener ally made with the bath temperature going in the rising direction Therefore the lowest calibration temperature should be the starting point CAUTION The gate must always be set to its lowest position while mak ing temperature changes to prevent overflowing the access cover The gate is designed to permit some fluid to flow through it when closed during temperature changes but it will need to be adjusted to optimum flow before measurements are made When the desired temperature is reached unclamp the gate and slowly raise it up while monitoring the fluid level in the flow tube When the level reaches a point near the top of the tube clamp the gate clamp ing screw snugly Performance is best if the fluid does not contact the access cover Do not permit the fluid to overflow the access cover When the bath is s
5. aths may be readily adapted for calibra tion of liquid in glass thermometers The 2019 DCB Liquid In Glass Ther mometer Calibration Kit provides features specific for the needs of liquid in glass thermometer calibration Additionally the model 2069 8X mag nifying scope is recommended for use with this kit These accessory products easily mount to the Hart 6331 7321 7341 and 7381 baths providing an excel lent solution for liquid in glass thermometer calibration Description The 2019 DCB Calibration Kit allows easy calibration of liquid in glass ther mometers by allowing the bath fluid to rise up near the top of the bath to a point adequately below the thermometer meniscus to permit non compensated reading of a total immersion thermometer Multiple thermometers can be ac commodated in the carousel and then easily rotated into position for reading The kit consists of the following major components 1 the carousel 2 access cover 3 flow tube and 4 flow adjustment gate See Figure 1 on page 8 Carousel The carousel is a device with individual wells that holds up to 10 thermometers This provides one reference thermometer and up to 9 units under test The car ousel rests on top of the access cover and is easily installed or removed as re quired Each thermometer well in the carousel is provided with a spring that holds the thermometer in place and keeps it steady in the well All thermome ters will be in direct contact with the flui
6. d The carousel can rotate easily in its locating hole permitting each thermometer to be viewed through the magnify ing telescope directly in front of the bath There are two handles each located directly across from one another on the perimeter of the carousel to facilitate rotation Each handle has an insulating knob on the top BURN HAZARD WARNING Hot fluids may be present The technician must be careful when rotating the carousel to avoid any hot fluid that might be accessible Access Cover The access cover rests on the edges of the bath access hole and serves several purposes The first is to prevent drafts over the surface of the fluid from dis turbing the stability of the bath It supports the carousel locating it centrally over the flow tube It provides a guide and clamp for positioning and holding the flow adjustment gate in the desired location Finally there are several added holes in the cover to permit draining of spilled or overflowed fluid back into the bath tank 2019 DCB L I G Thermometer Calibration Kit User s Guide Figure 1 2019 Assembly 2 Introduction Description Flow Tube The flow tube is a stainless steel tube that attaches to the bath s stirring assem bly Bath fluid is pushed up through the tube to a level near the top of the bath The tube is about 3 5 inches 88 9 mm in diameter It attaches to the inside of the tank at specific locations that keep it properly situated and supported while fo
7. ection provided by the instrument may be impaired The following definitions apply to the terms Warning and Caution WARNING identifies conditions and actions that may pose hazards to the user CAUTION identifies conditions and actions that may damage the in strument being used 1 2 1 WARNINGS To avoid possible personal injury follow these guidelines GENERAL It is not recommended that this accessory be left unattended during opera tion The user should be familiar with the operation and the User s Guide for the bath this accessory is being use with DO NOT use the instrument for any application other than calibration work The instrument was designed for temperature calibration Any other use of the unit may cause unknown hazards to the user This accessory is to be used with Hart s Deep Well Compact Bath models only DO NOT overfill the bath Overflowing extremely cold or hot fluid may be harmful to the operator Refer to the specific Bath Preparation and Fill ing instructions in the bath User s Guide Follow all safety guidelines listed in the user s manual Calibration Equipment should only be used by trained personnel 1 Before You Start Authorized Service Centers e If this equipment is used in a manner not specified by the manufacturer the protection provided by the equipment may be impaired e Overhead clearance is required to use this accessory with the bath Do not
8. luid from the sur faces when necessary Any surfaces coated with oil will collect dirt during stor age and may contaminate the bath when used again Always be sure the adapter parts are clean when reinserting into the bath If the adapter is used with differ ent fluids be sure to remove all of the old fluid from the surfaces so that it does not contaminate the new bath fluid 17 6 Disclaimer Disclaimer This manual in not intended to provide a procedure for the proper calibration of liquid in glass thermometers but to provide guidance for the proper use of the indicated Hart Scientific bath accessories 19
9. pter away from the bath do not allow it to drip onto the control panel or scope 1 3 Authorized Service Centers Please contact one of the following authorized Service Centers to coordinate service on your Hart product Fluke Corporation Hart Scientific Division 799 E Utah Valley Drive 2019 DCB L I G Thermometer Calibration Kit User s Guide American Fork UT 84003 9775 USA Phone 1 801 763 1600 Telefax 1 801 763 1010 E mail support hartscientific com Fluke Nederland B V Customer Support Services Science Park Eindhoven 5108 5692 EC Son NETHERLANDS Phone 31 402 675300 Telefax 31 402 675321 E mail ServiceDesk fluke nl Fluke Int l Corporation Service Center Instrimpex Room 2301 Sciteck Tower 22 Jianguomenwai Dajie Chao Yang District Beijing 100004 PRC CHINA Phone 86 10 6 512 3436 Telefax 86 10 6 512 3437 E mail xingye han fluke com cn Fluke South East Asia Pte Ltd Fluke ASEAN Regional Office Service Center 60 Alexandra Terrace 03 16 The Comtech Lobby D 118502 SINGAPORE Phone 65 6799 5588 1 Before You Start Authorized Service Centers Telefax 65 6799 5588 E mail antngOsinga fluke com When contacting these Service Centers for support please have the following information available e Model Number e Serial Number e Voltage e Complete description of the problem 2 Introduction Description 2 1 Introduction Hart Scientific Deep Well Compact B
10. rcing the bath s fluid into and up through it The fluid exits through holes near the top without needing to flow over the top Flow Adjustment Gate The flow adjustment gate fits inside the entrance to the flow tube It consists of a flat piece of stainless steel that slides up and down increasing and decreasing the flow to control the level of the fluid in the tube A tab at the bottom of the plate prevents the gate from coming out A stainless steel rod is attached to the gate that then slips up through the access cover with a round knob on top for easy adjustment A clamping screw see Figure 1 on the access cover will hold the gate at the desired vertical location Figure 2 Flow Adjustment Gate 3 Installation Installation The flow tube is easiest to install if the bath is empty of fluid No attaching hardware is necessary It may be installed with fluid in place if the fluid is clear enough to see to the bottom The bath power must be off for the installation and the fluid must be at a safe temperature The inlet opening at the bottom of the flow tube has narrow flanges on each side These flanges must slide into the mating grooves at the bottom of the bath where the fluid exits from the stirring assembly see Figures 3 and 4 On each side of the flow tube about 3 5 inches 88 9mm from the top there are some locating ears see Figure 1 on page 8 The vertical slot in each of these ears must slide onto the mating studs
11. see Figure 4 on each side of the bath tank as the flow tube is slid into position No attaching hardware is necessary The gate comes assembled as part of the flow tube and does not require any further as sembly by the user With the flow tube in place you are ready for the next step Figure 3 Slide the flow tube over the stirring assembly outlet The access cover sits on top of the bath access hole and is located just inside the rubber seal around the access hole Remove the knob from the top of the gate adjusting rod and loosen the gate clamping screw in the rod guide of the 11 2019 DCB L I G Thermometer Calibration Kit User s Guide access cover Slip the gate adjusting rod through the guide on the access cover Replace the knob on top of the adjusting rod Figure 4 Inside Bath Tank Finally examine the thermometer holding springs see Figure 6 in the carousel and adjust them as needed for your thermometers To adjust the springs grip the spring firmly near the top bend with a pair of needle nose pliers Bend it in the appropriate direction until there is enough spring tension on the thermome ter to hold it in place while permitting it to slide up and down with just enough ease to properly position the meniscus Do not permit the thermometer to slide 12 3 Installation to the bottom of the bath unrestrained or it may be broken Place the carousel into the locating hole in the access cover Pa Figure 5 2
12. table adjust the vertical position of the thermometers in the carousel so the meniscus and markings are just high enough to read through the scope Thermometers may now be measured by rotating each one into position as desired As the fluid increases in temperature it will expand and the excess will flow into the fluid expansion reservoir keeping the bath at the maximum level The changing properties of the fluid will also permit it to rise higher in the tube and perhaps overflow the access cover if the gate is left unattended CAUTION The gate must always be set to its lowest position while mak ing temperature changes to prevent overflowing the access cover CAUTION if the power is lost to the bath the gate must be lowered to prevent fluid from surging and spilling over the top of the access cover when the power is reinstated 15 5 Maintenance Removal of the 2019 DCB 5 1 Maintenance Removal of the 2019 DCB Always reduce the temperature of the bath to one safe for handling of the adapter components before removing the 2019 DCB Reverse the procedure for installation Always allow as much fluid as possible to drain off the flow tube and into the bath before setting it aside CAUTION When taking the adapter away from the bath do not allow it to drip onto the control panel or scope Place the adapter on paper towels or some other absorbent material to collect the remaining fluid clinging to its surfaces Wipe the excess f
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