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Authorised distrubutor for Sanwa and Hisatomi products.

Home > Sanwa Products > Digital Multimeter > CD721, CD731, CD751

On Stock Products

More info:
Sanwa website

Digital Multimeter
CD721, CD731, CD751
Standard DMM with a large and easy-to-use LCD
* CD751 - True RMS



CD751	CD731	CD721

Standard Accessory:

Test lead ( TL-21 )

Holster ( H-70 )

Instruction manual

Optional Accessory:

Optional accessories

Clamp-on DC Current Probe ( 30/300A )
CL33DC with carrying case

Clamp-on AC-DC Current Probe ( 20/200A )
CL-22AD with carrying case

Clamp-on AC Current Probe ( 20/200A )
CL-20D Optional carrying case : C-CL

Carrying case : C-C7

High voltage probe ( HV-60 )

Features:

The holster to secure test leads comes as standard
The holster is made of tough elastomer and is thick enough to withstand shock in the roughest environments. Secure the test lead in the holder provided on the left side to take measurements in locations where the unit cannot be put in place. The holster is also designed for safety as it acts as a cover when storing the sharp, pointed pins.

Gold-plated test pin lead
Gold-plated test pin leads Gold-plated test pins remain strong despite changes over the years, which is why they are used. While other types of metal plating may generate an insulating film due to corrosion, etc. during long term storage, gold plating has a low contact resistance and thereby gurantees stable contact.

Optional test lead : TL-21M
A 0.7-mm pin tip diameter enables contact with narrow parts such as a connector.
The sharp memory alloy returns to its original shape even after being bent. The pin top is a screw replacement-type and includes a standard 2-mm diameter gold -plated pin.

The reclining stand is convenient for desktop use
Provided with CD751 and CD731.

To prevent mishandling safety cover and cap
The 20A and 12A large current measurement terminals have and internal resistance of 0.005 ohm, so extremely low voltage placement must be avoided. As a precaution, CD751 and CD731 come equipped with rotating covers. Normally, the large current measurement terminal remains covered by means of a spring. CD721 comes equipped with a cap instead.

General Specification:

Measuring method

Dual integration

Display

Counter approx. 3200 counts : Bar graph : 32 segments max.

Range selection

Auto and manual ranges

Over display

"O.L" mark indication

Polarity

Automatic selection ( only "-" is displayed. )

Battery discharge

If the internal battery has been consumed and the voltage drops, the display shows.

Sampling rate

Approx. 2 times/sec ( numeral display )
Approx. 12 times/sec ( bar graph )

Accuracy assurance temperature / humidity range

18~28 oC 80% RH max. No condensation.

Operating temperature / humidity range

0~40 oC 80% RH max. No condensation.

Storage temperature / humidity range

10~50 oC 70% RH max. No condensation.

Power supply

R6 * 2

Power consumption

CD751:	Approx. 8mohm TYP ( at DCV )
CD731: CD721:	Approx. 1.8mohm TYP ( at DCV )

Internal fuse

CD751: CD731:	0.5A/250V Ф5.2 * 20mm Blowout capacity 300A 20A/250V Ф6.35 * 31.8mm Blowout capacity 1000A
CD721:	0.5A/250V Ф5.2 * 20mm Blowout capacity 300A 12A/250V Ф6.3 * 30mm Blowout capacity 500A

Dimension

CD751:
CD731:
CD721:

165.5(H) * 78(W) * 41.5(D)mm ( with holster )
157.5(H) * 70(W) * 32.5(D)mm ( without holster )

Weight

CD751:	Approx. 315g ( with holster )
CD731:	Approx. 310g ( with holster )
CD721:	Approx. 290g ( with holster )

Safety

IEC 1010-1 overvoltage category III ( max. DC.AC 600V )
( EN61010-1 )
( Max. DC 1000V, AC750V overvoltage category II )

Accessories

Instruction manual, Test lead ( TL-21 ), Holster ( H-70 )

Measurement Range And Accuracy:

DCV

Range

Accuracy

Input Resistance

320mV

±(0.5%rdg+2dgt)

Approx. 100Mohm

3.2V

±(0.9%rdg+2dgt)

Approx. 11Mohm

32V

Approx. 10Mohm

320V

1000V

ACV

Range

Accuracy

Input Resistance

Accuracy in the case of sine wave AC

3.2V

CD751:
±(1.2%rdg+8dgt)
CD731/CD721:
±(1.2%rdg+5dgt)

Approx. 11Mohm

CD751:
3.2V range:
40~500Hz
32V range up:
40~1kHz
CD731/CD721:
40~400Hz

32V

Approx. 10Mohm

320V

750V

Ohm

Range

Accuracy

Open Voltage

320ohm

±(1.2%rdg+2dgt)

Approx. 1.3V

The measuring current changes according to the resistance of the resistance measure.

3.2kohm

32kohm

320kohm

3.2Mohm

±(2.0%rdg+2dgt)

30Mohm

±(5.0%rdg+2dgt)

DCA - CD751/CD731

Range

Accuracy

Input Resistance

32uA

±(1.4%rdg+2dgt)

Approx. 5kohm

320uA

Approx. 500ohm

3200uA

32mA

Approx. 5ohm

320mA

20A*

±(2.0%rdg+2dgt)

Approx. 0.005ohm

DCA - CD721

Range

Accuracy

Input Resistance

32mA

±(1.4%rdg+2dgt)

Approx. 5ohm

320mA

12A*

±(2.0%rdg+2dgt)*

Approx. 0.005ohm

ACA - CD751/CD731

Range

Accuracy

Input Resistance

Accuracy in the case of sine wave AC

32uA

CD751:
±(1.8%rdg+10dgt)
CD731/CD721:
±(1.8%rdg+5dgt)

Approx. 5kohm

CD751:
40~1kHz
CD731:
40~400Hz

320uA

Approx. 500ohm

3200uA

32mA

Approx. 5ohm

320mA

20A*

CD751:
±(2.5%rdg+10dgt)
CD731/CD721:
±(2.5%rdg+5dgt)

Approx. 0.005ohm

ACA - CD721

Range

Accuracy

Input Resistance

Accuracy in the case of sine wave AC

32mA

±(1.8%rdg+5dgt)

Approx. 5ohm

40~400Hz

320mA

12A*

±(2.5%rdg+5dgt)

Approx. 0.005ohm

Continuity

Buzzer

Sounds at approx. 20ohm max.

Open voltage : Approx. 1.3V

Diode Test

Open voltage: Approx. 3V

Battery Check - CD721 only

CD751/CD731 Maximum Overload Protection Input
Function	Input	Max. rating input voltage	Max. overload protection
DCV ACV	V/Ohm/Continuity/Diode uA/mA/COM	DC1000V AC750V	DC1000V, AC750V or PEAK MAX.1000V
Ohm/Continuity/Diode		Voltage and current input prohibited	DC, AC500V or PEAK MAX.700V
DC/AC 32uA		DC/AC 32µA	0.5A/250V Fuse protected
DC/AC 320uA/3200uA		DC/AC 3200µA	0.5A/250V Fuse protected
DC/AC 32mA/320mA		DC/AC 320mA	0.5A/250V Fuse protected
DC/AC20A	20A/COM	DC/AC20A 10sec.	20A/250V Fuse protected
CD721 Maximum Overload Protection Input
Function	Input	Max. rating input voltage	Max. overload protection
DCV ACV	V/Ohm/Continuity/Diode uA/mA/COM	DC1000V AC750V	DC1000V,AC750V or PEAK MAX.1000V
Ohm/Continuity/Diode		Voltage and current input voltage	DC,AC500V or PEAK MAX.700V
1.5V		DC2V	0.5A/250V Fuse protected
DC/AC 32mA/320mA		DC/AC 320mA	0.5A/250V Fuse protected
DC/AC12A	12A/COM	DC/AC12A 30sec.	12A/250V Fuse protected

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