Related Manuals for Digi-Sense 20250-55
Summary of Contents for Digi-Sense 20250-55
- Page 1 User Manual Compact Autoranging Clamp Meters with NIST-Traceable Calibration Models 20250-55 (400 A AC), 20250-56 (400 A AC/DC) THE STANDARD IN PRECISION MEASUREMENT 1065DGMAN_20250-55,-56 DS Clamp Meter Man.indd 1 8/7/2017 2:22:29 PM...
- Page 2 Introduction The Digi-Sense Compact Autoranging Clamp Meters (400 A AC Model 20250-55; 400 A AC/DC Model 20250-56) offer all the basic features needed for measurement. The double- molded plastic housing and jaw are designed for use in tight places. A large backlit display provides easy-to-read measurements.
- Page 3 • Do not exceed the maximum rated input limits: Input Limits Maximum Input, Maximum Input, Function Model 20250-55 Model 20250-56 400 A AC 400 A AC/DC 600 V AC/DC 600 V AC/DC Frequency, Duty...
- Page 4 CAUTIONS • Improper use of this meter can cause damage, shock, injury or death. Read and understand this user manual before operating the meter. • Always remove the test leads before replacing the battery. • Inspect the condition of the test leads and the meter itself for any damage before operating the meter.
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Page 5: Key Features
Unpacking Check individual parts against the list of items below. If anything is missing or damaged, please contact your instrument supplier immediately. 1. Meter 2. Test leads 3. Temperature probe 4. Carrying case 5. 9 V battery 6. User manual 7. - Page 6 Meter Description (Model 20250-55) 1. Current clamp 2. Noncontact AC voltage indicator light 3. Clamp trigger 4. Rotary function switch 5. Data HOLD / Backlight button 6. Relative button Ω 7. 4000-count LCD 8. MODE select button 9. Range button 10.
- Page 7 Display Layout (Model 20250-55) 1. AC DC AC (alternating current) and DC (direct current) – Minus sign 3. 8.8.8.8 4000 count (0 to 3999) measurement reading 4. AUTO Autorange mode 5. REL ( ) Relative mode Diode test mode 7. •))) Audible continuity 8.
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Page 8: Setup And Operation
Setup and Operation Note: Read and understand all warning and precaution statements listed in the safety section of this operation manual prior to using this meter. Set the rotary function switch to the OFF position when the meter is not in use. AC and AC/DC Current Measurements WARNING: Ensure that the test leads are disconnected from the meter before making current clamp measure-... - Page 9 AC/DC Voltage Measurements 1. Insert the black test lead into the negative COM terminal and the red test lead into the positive V terminal. 2. Set the rotary function switch to the V position. 3. Select AC or DC with the MODE button. 4.
- Page 10 “OL” in both polarities. Black Black Forward test Reverse test 5. For Continuity tests, if the resistance is <150 Ω (20250-55) or <50 Ω (20250-56), a tone will sound. Capacitance Measurements (Model 20250-56 Only) WARNING: To avoid electric shock, disconnect power to the unit under test and discharge all capacitors before taking any capacitance measurements.
- Page 11 Frequency or % Duty Cycle Measurements 1. For model 20250-55, set the rotary function switch to the V position, then press the Hz% button to select “Hz” or “% duty”. 2. For model 20250-56, set the rotary function switch to the Hz position.
- Page 12 Noncontact AC Voltage Measurements WARNING: Risk of Electrocution. Before use, always test the voltage detector on a known live circuit to verify proper operation 1. Touch the probe tip to the hot conductor or insert into the hot side of the electrical outlet. 2.
- Page 13 RANGE Button (Model 20250-55 only) When the meter is first turned on, it defaults to autorang- ing. This automatically selects the best range for the mea- surements being made and is generally the optimal mode for most measurements. For measurement situations...
- Page 14 6. Press the PEAK button again, “Pmin” will display. The display will now update and indicate the lowest negative peak. 7. To return to normal operation, press and hold the PEAK button until the “Pmin” or “Pmax” indicator switches off. Note: If the rotary function switch position is changed after a calibration, the PEAK Hold calibration must be repeated for the new function selected.
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Page 15: Specifications
Specifications Model 20250-55 Model 20250-56 Range & Accuracy Range & Accuracy Function Resolution (% of reading) Resolution (% of reading) 4.000 AAC ±(2.5% + 12 dgts) — — AC Current 40.00 AAC ±(2.5% + 8 dgts) 40.00 AAC ±(2.5% + 8 dgts) (50/60 Hz) 400.0 AAC... - Page 16 ⁄ " (30 mm) approximately Diode test Test current of 0.3 mA typical; Open circuit voltage 1.5 V DC typical (20250-55), <3 V DC typical (20250-56). Threshold <150 Ω (20250-55), Continuity <50 Ω (20250-56); Test current <0.5 mA check Low-battery “...
- Page 17 Storage humidity <80% Operating 7000 ft (2000 meters) maximum altitude Overvoltage Category III 600 V Battery One 9 V battery Auto power-off 30 minutes approximately Weight 6.5 oz (183 g) Dimensions ⁄ " x 2 ⁄ " x 1 ⁄ "...
- Page 18 Maintenance, Recalibration, and Repair Cleaning and Storage • The meter should be cleaned with a damp cloth and mild detergent when necessary. Do not use solvents or abrasives. • Store the meter in an area with moderate temperature and humidity. Battery Replacement 1.
- Page 19 It is recommended that Digi-Sense products are calibrated annually to ensure proper function and accurate measurements; however, your quality system or regulatory body may require more frequent calibrations. To schedule your recalibration, please contact InnoCal, an ISO 17025 calibration laboratory accredited by A2LA.
- Page 20 For Product and Ordering Information, Contact: Toll-Free: 1-800-358-5525 Toll-Free: 1-800-323-4340 Phone: 1-847-327-2000 Phone: 1-847-549-7600 Fax: 1-847-327-2700 Fax: 1-847-247-2929 Davis.com/Digi-Sense ColeParmer.com/Digi-Sense 1065DGMAN_20250-55,-56 Manual Part No. 00101-90 1065DGMAN_20250-55,-56 DS Clamp Meter Man.indd 20 8/7/2017 2:22:33 PM...
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