Related Manuals for Digi-Sense 20250-56
Summary of Contents for Digi-Sense 20250-56
- 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 cycle, Resistance, 250 V AC/DC...
- 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
• CAT III 1000 V safety rating • Electronic overload protection • Autoranging with auto power-off • Peak Hold function that captures the peak AC current or voltage reading (model 20250-56 only) 1065DGMAN_20250-55,-56 DS Clamp Meter Man.indd 5 8/7/2017 2:22:29 PM... - Page 6 9. Range button 10. Hz% button 11. COM input jack 12. V Ω CAP TEMP Hz jack 13. Battery cover Meter Description (Model 20250-56) 1. Current clamp 2. Noncontact AC voltage indicator light 3. Clamp trigger 4. Rotary function switch 5.
- Page 7 8. HOLD Data HOLD mode 9. °C,°F,µm,V, A,K,M,Ω Units of measure list 10. Hz % Frequency/duty cycle test mode Display Layout (Model 20250-56) 1. AC DC AC (alternating current) and DC (direct current) – Minus sign 3. 8.8.8.8 4000 count (0 to 3999) measurement reading with analog bar graph 4.
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Page 8: Setup And Operation
1. Set the rotary function switch to the 400A or 40A or 4A range. 2. For model 20250-56 only, select AC or DC by pressing the MODE button. 3. If the measuring... - 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 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 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. (Model 20250-56 does not feature % duty cycle measurement.) 3.
- Page 12 This is normal operation. MODE Button To select DC/ACV,OHM/ Diode/Continuity (CAP 20250-56 only). Data HOLD Button To “freeze” a reading on the screen, press the HOLD (H) button. While data HOLD is active, the “HOLD” display icon appears on the LCD.
- Page 13 3. Press and hold the RANGE button for 2 seconds to exit the manual ranging mode and return to autoranging. PEAK Hold Button (Model 20250-56 only) The PEAK Hold function captures the peak AC voltage or current. The meter can capture negative or positive peaks as fast as 1 millisecond in duration.
- 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 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 “ ” is displayed indication Overrange “...
- 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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