20/70 Series II Analog/Digital Multimeters

The Industry Leader for Flexibility, Reliability, and Performance

	23/77				21/75
	29/79				70/73

Introduction

Features

Specifications

Accessories and Ordering Information

Introduction

Few handheld DMMs can match the Fluke 20 and 70 Series II for versatility and reliability in a wide range of applications. The Models 21, 23 and 29 are the industrial counterparts of the Fluke 75, 77 and 79 respectively, and are equivalent in specifications, features and functions. The bright yellow color of Fluke's 20 Series II Multimeters and an impact resistant case reflect their intended use for industrial electrical applications.

Easy to use—single pushbutton and rotary dial with auto and manual ranging
Automatic TouchHold® allows measurements while watching probes and circuit, and updates automatically with each new measurement.
Audible Continuity/Diode Test for fast continuity, diode and transistor checks without looking at the display
Holster/Flex-Stand™ included (Fluke 23/77 and 29/79)
Capacitance, frequency and Lo-Ohms range (Fluke 29/79)

Features

	70	73	21/75	23/77	29/79
Display/Counts	3200	3200	3200	3200	4000
Analog Bar Graph/Segments	31	31	31	31	63
AC and DC Voltage	•	•	•	•	•
AC and DC Current		(1)	•	•	•
Resistance	•	•	•	•	•
Diode Test	•	•	•	•	•
Continuity Beeper	•	•	•	•	•
Auto and Manual Ranging	•	•	•	•	•
Automatic TouchHold®	•	•	•	•	•
Sleep Mode	•	•	•	•	•
Holster/Flex -Stand	Option	Option	Option	•	•
Lo-ohms					•
Frequency of Voltage					•
Capacitance					•
Smoothing					•

(1) 10A range only. No mA range.

Specifications

Function	Range and Resolution	70	73	21/75	23/77	29/79
VDC	320 mV, 3.200V, 32.00V, 320.0V,1000V	±(0.5%+1)	±(0.4%+1)	±(0.4%+1)	±(0.3%+1)
VDC	40.00 mV, 400.00 mV, 4.000V, 40.00V, 400.0V, 1000V					±(0.3%+1)
VAC	3.200V, 32.00V, 320.0V, 750V	±(2%+2)	±(2%+2)	±(2%+2)	±(2%+2)
VAC	400.0mV, 4.000V, 40.00V, 400.0V, 750.0V					±(1.0%+2)
ADC	32.00 mA, 320.0 mA	NA	NA	±(1.5%+2)	±(1.5%+2)
ADC	10.00A*	NA	±(1.5%+2)	±(1.5%+2)	±(1.5%+2)
ADC	4.000 mA, 4.000A, 40.00 mA, 10.00A*					±(1.5%+2)
AAC	32.00 mA, 320.0 mA	NA	NA	±(2.5%+2)	±(2.5%+2)
AAC	10.00A*	NA	±(2.5%+2)	±(2.5%+2)	±(2.5%+2)
AAC	4.000 mA, 4.000A, 40.00 mA, 10.00A*					±(0.5%+2)
Resistance	320.0Ohms, 3200Ohms, 32.00kOhms, 320.0 kOhms, 3.200 MOhms, 32.00 MOhms	±(0.5%+1)	±(0.5%+1)	±(0.5%+1)	±(0.5%+1)
Resistance	400.0Ohms, 4.000 kOhms, 40.00 kOhms, 400.0 kOhms, 4.000 MOhms, 40.00 MOhms					±(0.4%+1)
Lo Ohms	40.00Ohms, 400.0Ohms					5% typical
Frequency	99.99 Hz, 999.9 Hz, 9.999 kHz, 99.99 kHz, 999.9 kHz					±(0.01%+1) to 20 kHz
Capacitance	99.99 nF, 999.9 nF, 9.999 µF, 99.99 µF, 999.9 µF, 9999 µF					±(1.9%+2)

* 10A continuous, 20A for up to 30 seconds

Battery Life: 2000 hours typical for Models 70, 73/21, 75, and 77/23. 700 hours for 29/79

Size: 166 mm L x 75 mm W x 28 mm D (6.55" L x 2.95" W x 1.12" D) without holster

Weight: 0.34 kg (12 oz) without holster

Lifetime Limited Warranty: One year guaranteed calibration

Accessories and Ordering Information:

Included Accessories

All 20 and 70 Series II Multimeters are packaged with a pair of safety-designed TL75 right-angle test leads, operator's manual and installed 9V battery. Models 23/77 and 29/79 come with a C70Y yellow holster with Flex-Stand™.

Ordering Information

Models	Description
Fluke 70-2	Multimeter
Fluke 73-2	Multimeter
Fluke 21-2, Fluke 75-2	Multimeter
Fluke 23-2, Fluke 77-2	Multimeter
Fluke 29-2, Fluke 79-2	Multimeter

(Note: For adjustable speed drives use True-RMS Meters such as Fluke 76)

20/70 Series II Analog/Digital Multimeters

The Industry Leader for Flexibility, Reliability, and Performance

23/77

21/75

29/79

70/73

Introduction

Features

Specifications

Accessories and Ordering Information:

Included Accessories

Ordering Information