Related Manuals for ThermoWorks 3000 Series
Summary of Contents for ThermoWorks 3000 Series
- Page 1 3000 SERIES DRY-BLOCK HEAT SOURCE USER MANUAL Please read this manual before switching the unit on IMPORTANT safety information inside...
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Page 2: Table Of Contents
TABLE OF CONTENTS 1 INTRODUCTION 2 SAFETY 3 OPERATION 3.1 Parts and Controls 3.1.1 Power Lead 3.1.2 Power Switch 3.1.3 Fan 3.1.4 Stand 3.1.5 Dry-Block 3.1.6 Temperature Controller 3.2 Operation 3.2.1 Dry-Block Set-Up 3.2.2 Temperature Setting 3.2.3 Probe Testing 3.2.4 Display Units 4 MAINTENANCE 4.1 Care of the 3000 Series Units 4.2 Warranty 5 SPECIFICATIONS ... -
Page 3: 1 Introduction
1. INTRODUCTION The 3000 Series dry-block heating and cooling sources allow users to check the accuracy of thermometers and sensors as a system, on site, without the need for heavy, expensive equipment. The dry-blocks are high accuracy portable temperature sources that are extremely easy to use. Simply plug in, switch on and set the dry-block to the temperature that you wish to check, insert your probe into the well and take the reading. Compare the temperature reading of your thermometer and probe to the displayed temperature of the dry-block and the difference is the error of your instrument. For optimum accuracy and NIST traceability use a reference thermometer to make comparison measurements. The 3000 Series dry-blocks are controlled by a closed loop microprocessor based digital PID temperature controller system incorporating a combination heater/cooler and a precision platinum RTD sensor housed in the aluminum block. Fan cooling allows rapid changes in block temperature upon demand. The required temperature may be adjusted in 0.1° increments across the range of the instrument using the buttons on the front panel. These units are ideal for use in a variety of industrial and process applications. Each showing actual test data, which can be used as part of quality assurance programs. -
Page 4: 2 Safety
2 SAFETY Operate dry-blocks in an ambient temperature between +50°F and 86°F (+10 and +30°C) (+15 to +25°C for optimum accuracy) and humidity between 5 to 95% (non condensing). Note: High humidity will cause icing of the well when operated below zero. The fan runs continuously to moderate the internal unit temperature. Always ensure the air vents and fan aperture are clear and have at least 6 inches (150mm) of space between them and any obstructions. NEVER cover the unit while in operation or operate if the fan stops. The calibrator can operate at high and low temperatures. Precautions MUST be taken to prevent personal injury or damage to surrounding objects. Probes may be hot or cold when removed from the unit and should be placed on a heat resistant surface and handled with care. The unit may remain hot for several minutes after switching off. DO NOT switch off at temperatures above +212°F (+100°C). Allow to cool before storage. Care must be taken when removing probes and inserts from the units. If the unit is set at a high temperature the inserts will be very hot and could cause burns to the hands. Please use the insert removal tool supplied. After removal place hot probes and inserts only on a suitable heatproof surface. Only place temperature probes in dry-block holes. These units are designed to be operated dry. DO NOT introduce any liquid into any of the dry-block holes. These dry-blocks are designed to be rugged and durable but contain electronics. DO NOT operate in dirty, dusty or very damp environments or near liquids that could present a hazard from electric shock. Connect input power lead to only a 110-115V or 230 V, 50-60 Hz (model dependant) grounded AC power supply. The unit requires up to 200 watts of power. 3000 Series dry-block heat sources are programmed and calibrated at the factory for optimum performance and should not need adjusting. If the unit is out of calibration or is in need of repair please return to the supplier. The dry-block unit is equipped with an internal electrical fuse. If a fuse blows, return to the supplier for inspection and repair. THERE ARE NO USER SERVICEABLE PARTS INSIDE. ... -
Page 5: 3 Operation
3 OPERATION 3.1 Parts and Controls 3.1.1 AC Power The power cord is clamped through the rear panel of the unit and is not removable. Plug into a standard 110-115V or 230 V (model dependant) grounded power outlet socket. 3.1.2 Power Switch The power switch is located on the rear panel of the unit and is indicated with a 1 and a 0. 3.1.3 Fan The internal fan runs continuously when the unit is operating. This provides cooling for the internal electronic components. Allow at least 6 inches (150mm) of space in front and behind the unit and DO NOT obstruct any of the ventilation holes. 3.1.4 Stand when not in use or if the unit is to be operated in a horizontal position. It can be swung down and forward until it hits the stops so that the unit can be used in an inclined position. The stand was not designed to be a carrying handle and should NOT be forced past the stops for this purpose. 3.1.5 Dry-Block The aluminum Dry-Block is located on the right hand side of the front panel. Dry-Well models have blocks with holes in to accept temperature probes. Model3 004: Inserts are available to suit standard probe diameters. Use the nearest, larger size insert to probe block to give good thermal conduction. Keep the inserts clean and avoid damage by storing carefully. The inserts MUST be regularly removed and cleaned to ensure they do not seize in the dry-block. DO NOT introduce any liquids or substance into the dry-block or inserts as this may result in the inserts sticking in the dry-block. 3.1.6 Temperature Controller In normal operating mode the numeric LED display shows the actual block temperature. A Control Output Indicator light is located in the top left corner of the display. This indicates the on/off state of the heater element in the block. -
Page 6: Operation
To show the set point temperature in the display press and release either the up or down arrow button [up/down ill]. Press and hold either the up or down arrow button [up/dn ill] to change the set-point value. A shift can be entered into the controller by pressing the scroll (left-hand) button. Press and hold either the up or down arrow button [up/dn ill] to change the shift value. A factory set should only be adjusted if the unit is being monitored by a precision reference thermometer. All other functions of the controller have been factory set and locked to maintain accuracy and repeatability. 3.2 Operation 3.2.1 Dry-Block Set-Up inches (150mm) of space in front and behind. The stand may be swung out to lift the front of the unit. Plug the power cord into a suitable grounded AC power outlet socket. Check for and remove any foreign objects prior to switching on. Turn the instrument on using the switch located on the rear panel, below the power cord. The fan will start immediately and the controller display will illuminate after approximately three seconds. 3.2.2 Temperature Setting The dry block may be set to any temperature between +91°F and 482°F (+33 and +250°C) in 0.1° increments (see 3.1.6 Temperature Controller for details). The control will cause the unit to heat or cool to the set point temperature. A control indicator light will show in the top left corner of the display when the heater is active. The dry-Block temperature is displayed in operation. A small overshoot and undershoot will occur when the block reaches the set point temperature. Ten minutes is normally required to reach a higher set point temperature. It will take longer to reach a lower set point temperature. Once the set point temperature is reached a further 10 minutes should be allowed for stability to be achieved. For optimum accuracy and stability allow the unit to warm up for 30 minutes after power up. The displayed block temperature should stay within ±0.9°F (±0.5°C) of the set point temperature. -
Page 7: Probe Testing
3.2.3 Probe Testing Insert the probe to be tested into one of the holes in the Dry- but should not be so tight that it cannot be removed easily. Best results will be obtained when the probe is inserted to the full depth of the Dry-Block hole of closest size to the probe diameter. Allow the reading from the probe to stabilize and then compare the reading with either the temperature controller display or an external reference thermometer. For optimum accuracy use a high precision reference thermometer and probe. If probes with a large mass are inserted into the Dry-Block holes the unit will require up to 10 to 15 minutes to re-stabilize. 3.2.4 Display Units The dry-block is shipped from the factory with display units set to °F or °C. This can be reset at the factory. Call for details. ... -
Page 8: 4 Maintenance
4 MAINTENANCE 4.1 Care of the 3000 Series Units 3000 Series Dry-Block units require very little maintenance. Avoid operation in dusty, dirty, oily or wet environment. If the case becomes dirty it may be cleaned using a damp cloth and mild detergent. Do not allow moisture to enter the case. It is important to check for and remove any foreign objects in the Dry-Block holes. WARNING: Dry-Block. This will damage the Dry-Block and could cause probes to become stuck. It could also cause a potential electric shock hazard. In the event that the heat source should require service or repair, please contact the manufacturer for assistance. There are no user serviceable parts inside and any attempted repair will void any warranty. 4.2 Warranty This instrument carries a twelve-month warranty and guarantee against defects in either components or workmanship. During this period, products that prove to be defective will, at the discretion of ThermoWorks, be either repaired or replaced without charge. The product warranty and guarantee does not cover damage caused by fair wear and tear, abnormal storage conditions, incorrect use, accidental misuse, abuse, neglect, misapplication offered and the user assumes the entire risk of using the product. Any liability by ThermoWorks is limited only to the replacement of defective materials or workmanship, and ThermoWorks accepts no responsibility for consequential loss. In line with our policy of continuous development, we prior notice. -
Page 9: 5 Specifications
5 SPECIFICATIONS Range: +91.4°F to 482°F (+33 to +250°C) (at +68°F (+20°C) ambient) Resolution: 0.1° C/F Accuracy: ±0.9°F: +91.4°F to +391.8°F (±0.5°C: +33 to +199.9°C) ±1.8°F: +392°F to 482°F (± 1°C:+200 to +250°C) ±3.6°F (±2.0°C) holes greater than 6.35mm Resolution: 0.1° C/F Heating Times: Ambient to +482°F (+250°C): 10 minutes Stabilization: 5 minutes Cooling Times: +482 to +212°F (+250 to +100°C): 15 minutes Hole Dimension: 2x 1/8" (3.3mm); 1x 5/32" (4.0mm), 3/16" (4.76mm), 1/4" 3001 (6.35mm) Hole Dimension: 1x 1/8" (3.3mm), 3/16" (4.76mm), 1/4" (6.35mm), 3/8" 3002: (9.6mm) Hole Dimension: 1x 3/16" (4.76mm), 1/2" (12.7mm) 3003: Hole Dimension: 1x 1/8" (3.3mm); .51" (13mm) removable brass insert 3004: Brass inserts available: 1/8" (3.3mm), 5/32" (4.1mm), 3/16" (4.8mm), 1/4" (6.4mm), 3/8" (9.6mm) Well: Depth 4" (100mm) - Page 10 Notes...
- Page 11 Manufactured for ThermoWorks, Inc Phone: (801) 756-7705 Fax: (801) 756-8948 E-mail: sales@thermoworks.com Web: www.thermoworks.com 547-124 / 08.02.22...
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