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Summary of Contents for Wahl CDW30
- Page 1 CDW30 Portable Calibration Dry Well User Manual Palmer Wahl Instruments, Inc. 234 Old Weaverville Road Asheville, NC 28804 Phone: (800) 421-2863 • (828) 658-3131 Fax: (828) 658-0728 Email: info@palmerwahl.com www.palmerwahl.com WD1118 Rev. A June 6, 2022...
- Page 2 Palmer Wahl Instruments, Inc. Warranty Manufacturer warrants all products listed in this manual to be free from defects in material or workmanship under normal use and service. The Manufacturer agrees to repair or replace any product, which upon examination is revealed to have been defective due to faulty workmanship or material if returned to our factory, transportation charges prepaid, within the product specific warranty period stated in the catalog by the manufacturer.
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Page 3: Table Of Contents
Technical Specification and Information ....................8 3.1. Explanation of Symbols ........................8 3.2. Approval data and certificates ......................8 3.3. CDW30 Dry Well Calibrator Specifications ..................9 3.4. Accessories ............................9 Design and function ..........................10 4.1. Description ............................ 10 4.2. - Page 4 External Cleaning ........................20 9.3. Re-calibration ..........................20 Troubleshooting ..........................21 Dismantling, return and waste disposal .................... 22 11.1. Dismantling ........................... 22 11.2. Returns ............................22 11.3. Waste Disposal ..........................22 Accessories for CDW30 series ......................22 12.1. Additional Options ........................22...
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Page 5: General Information
• Technical modifications are reserved without notice. • For more information refer to: Website: www.palmerwahl.com Relevant Technical Sheet: CDW30 Technical Service: (800) 421-2853 info@palmerwahl.com 1.1. Symbol Definition DANGER Indicates an immediately dangerous situation which causes death or serious injury if not avoided. -
Page 6: Safety
In this case you must wait until the temperature of the instrument equilibrates to the room temperature before putting it back into operation. Palmer Wahl is not responsible for any damages caused by inappropriate handling or misuse of this equipment. -
Page 7: Staff Qualification
2.2. Staff Qualification WARNING! - Risk of injury due to insufficient staff qualification! Improper handling and use may cause considerable personal and property damage. The activities described in this manual should be performed only by qualified personnel with the appropriate qualifications. Qualified Personnel Because of their professional training and their knowledge of control and measurement technologies, as well as their experience and knowledge of regulations, standards and guidelines in the country of... -
Page 8: Overheating Protection
After cooling, the dry well calibrator must be returned to Palmer Wahl Instruments, Inc. for servicing. 3. Technical Specification and Information 3.1. -
Page 9: Cdw30 Dry Well Calibrator Specifications
3.3. CDW30 Dry Well Calibrator Specifications 3.4. Accessories 12457-03 - Trolley transport case for CBB30/CLB50/CDW30, high density foam, wheels and handle Additional Inserts 12457-21: Insert J: 2 each: 1/8 inch; 1/4 inch; 3/8 inch Diameter Holes (Replacement) 12457-22: Insert K: 6 each: 1/4 inch Diameter Holes... -
Page 10: Design And Function
4. Design and function 4.1. Description The Palmer Wahl portable Dry Well Calibrator is designed for use on the factory floor or in the calibration laboratory and is provided for calibrating thermometers, temperature switches / thermostats, and RTD, thermistor and thermocouple sensors and probes. The operational safety of the equipment is only guaranteed when used as planned (calibration of temperature sensors). -
Page 11: Isometric Views Of The Portable Dry Well Calibrator
• The temperature controller is equipped with a 7-segment LED Display consisting of two 4- digit displays to indicate the Process Value (PV - upper) and the Set Value (SV - lower). 4.4. Isometric views of the portable Dry Well Calibrator Located at the top, just behind the handle is the dry well opening with interchangeable inserts. - Page 12 Rear view The rear panel of the calibrator contains the following: • Power Input Module with Power ON/OFF switch, for connection to the AC Mains supply; • Data Plate with Model Number, Serial Number, Temperature Range, Power requirements, and Fuse requirements Transport Cover Data Plate Power Input...
- Page 13 Bottom View (internal) CAUTION Do not block the air inlet opening on the bottom or any of the ventilation openings on the instrument. Power entry module with power switch 4.5. Controls Description 4.5.1. Front View of PID Controller...
- Page 14 LED OUT 1 “ON” indicates the dry well calibrator’s heater is ON. • LED OUT 1 “OFF” indicates the dry well calibrator’s heater is OFF. 6) LED Out 2 a) CDW30 – Heating and Cooling • Indicates the status of the output for temperature regulation. •...
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Page 15: Transport, Packaging, And Storage
• In Program or Menu mode displays current settings for the selected mode or parameter indicated in the PV indicator. 9) LED SET • When flashing, indicates controller is in Program or Menu mode. 5. Transport, packaging, and storage 5.1. Transport Check if the portable Dry Well Calibrator shows any damage caused during transport. -
Page 16: Dry Well Inserts
6.3. Dry Well Inserts To achieve maximum accuracy of a dry well calibrator, use the appropriate insert for the probes being calibrated. Due to the specific features of the different calibration inserts, different calibration results may be obtained. If extreme accuracy is required, a compensation of the calibration inserts should be performed. -
Page 17: Viewing The Current Temperature And The Set Point Temperature
CAUTION! If the Dry Well Calibrator is not used for a long period, it is possible that moisture penetrates into the heating elements due to the materials used (magnesium oxide). After transportation or storage of the calibrator in humid environments, the heating elements must be preheated slowly. -
Page 18: Calibration Mode (Normal Operating Mode)
7.2. Calibration Mode (Normal operating mode) 7.2.1. CDW30 Series The CDW30 series provides above and below ambient temperature control. Once the set point is set via the up/down arrows or from the programmed list, the controller will ramp the calibrator temperature to the selected temperature and then control it for stability. In this mode the LED indicators are as follows: •... -
Page 19: Cooling The Portable Dry Well Calibrator
Press and release “P” and the current Set Point will show. Press “P” Using the up and down arrows, scroll to the desired new set point value. In this example, 40.0° is used. Press P to confirm and save. Press U for 5 seconds or wait for 10 seconds with no keys pressed and the meter will return to normal operation. -
Page 20: Maintenance, Cleaning, And Re-Calibration
The portable Dry Well Calibrator has been adjusted and tested before shipment using standard internationally recognized quality measurement instruments. If adjustment is needed, you may return the Dry Well Calibrator to Palmer Wahl Instruments, Inc. Contact by following the instructions in paragraph 11.2, “Returns”. -
Page 21: Troubleshooting
If you prefer to calibrate it yourself and have the appropriate equipment, the temperature controller has Low and High temperature offsets available for calibration of the internal temperature sensor, which drives the PV display. Section 7.3 of this manual shows the controllers registers for A.L.P, the low temperature calibration point, A.L.o, the low temperature point offset (or correction);... -
Page 22: Dismantling, Return And Waste Disposal
12. Accessories for CDW30 series 12.1. Additional Options 12457-03 - Trolley transport case for CLB30/CLB50/CDW30, high density foam, wheels and handle Additional Inserts 12457-21: Insert J: 2 each: 1/8 inch; 1/4 inch; 3/8 inch Diameter Holes (Replacement) 12457-22: Insert K: 6 each: 1/4 inch Diameter Holes... - Page 23 12457-24: Insert M: 1 each: 1/8 inch; 3/16 inch; 1/4 inch; 3/8 inch Diameter Holes 12457-25: Insert E: Blank, No Holes, (user drill) Note: 12457-21 is included as standard...
- Page 24 Palmer Wahl Instruments, Inc. 234 Old Weaverville Road Asheville, NC 28804 Phone: (800) 421-2853 • (828) 658-3131 FAX: (828) 658-0728 Email: info@palmerwahl.com www.palmerwahl.com...
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