Metrel MI 3121 SMARTEC Insulation Continuity

Insulation resistance

Insulation resistance (test voltages 50 V DC, 100 V DC and 250 V DC)

Measuring range according to EN 61557 is 0.25 MΩ ÷ 199.9 MΩ

Measuring range (MΩ)/ Resolution (MΩ)/ Accuracy

0.00 ÷ 19.99/ 0.01/ ±(5 % of reading + 3 digits)

20.0 ÷ 99.9/ 0.1/ ±(10 % of reading)

100.0 ÷ 199.9/ 0.1/ ±(20 % of reading)

Insulation resistance (test voltages 500 V DC and 1000 V DC)

Measuring range according to EN61557 is 0.15 MΩ ÷ 30 GΩ

Measuring range (Ω)/ Resolution (MΩ)/ Accuracy

0.00 M ÷ 19.99 M/ 0.01/ ±(5 % of reading + 3 digits)

20.0 M ÷ 199.9 M/ 0.1/ ±(5 % of reading)

200 M ÷ 299 M/ 1/ ±(5 % of reading)

300 M ÷ 999 M/ 1/ ±(5 % of reading)

1.00 G ÷ 4.99 G/ 10/ ±(10 % of reading)

5.00 G ÷ 19.99 G/ 10/ ±(20 % of reading)

20.0 G ÷ 29.9 G/ 100/ indicative

Open circuit voltage: -0 % / +20 % of nominal voltage

Measuring current: min. 1 mA at RN=UNx1 kΩ/V

Short circuit current: max. 3 mA

Auto discharge after test

Continuity (200 mA)

Measuring range according to EN61557 is 0.16 Ω ÷ 1999 Ω

Measuring range R (Ω)/ Resolution (Ω)/ Accuracy

0.00 ÷ 19.99/ 0.01/ ±(3 % of reading + 3 digits)

20.0 ÷ 199.9/ 0.1/ ±(5 % of reading)

200 ÷ 1999/ 1/ ±(5 % of reading)

Open-circuit voltage: 6.5 V DC ÷ 9 V DC

Measuring current: min. 200 mA into load resistance of 2 Ω

Test lead compensation: up to 5 Ω

Automatic polarity reversal of the test voltage.

Continuity (7 mA)

Measuring range (Ω) Resolution (Ω) Accuracy

0.0 ÷ 19.9 0.1 ±(5 % of reading + 3 digits)

20 ÷ 1999 1 ±(5 % of reading + 3 digits)

Open-circuit voltage 6.5 V DC ÷ 9 V DC

Short-circuit current max. 8.5 mA

Test lead compensation up to 5 Ω

Voltage

Measuring range (V)/ Resolution (V)/ Accuracy

0 ÷ 9.99/ 0.01/ ±(3 % of reading + 3 digits)

10.0 ÷ 99.9/ 0.1/ ±(5 % of reading + 3 digits)

100 ÷ 550/ 1/ ±(5 % of reading + 3 digits)

Result type: True r.m.s. (TRMS)

Nominal frequency range: 0 Hz, 15 Hz ÷ 500 Hz

Frequency

Measuring range (Hz)/ Resolution (Hz)/ Accuracy

0.00 ÷ 19.99/ 0.01/ ±(0.2 % of reading + 1 digit)

20.0 ÷ 199.9/ 0.1/ ±(0.2 % of reading + 1 digit)

200 ÷ 500/ 1/ ±(0.2 % of reading + 1 digit)

Nominal voltage range: 10 V ÷ 550 V

General data

Power supply: 6 x 1.5 V batteries or rechargeable batteries, size AA

Battery life: typical 13 h (>1200 insulation resistance tests / >2000 resistance

RLOW tests)

Overvoltage category: CAT III 600 V, CAT IV 300 V

Protection classification:IP 40

Display: custom liquid crystal display with backlight

Communication transfer speed: 115200 baud (RS 232) / 256000 baud (USB)

Memory: 1900 measurements

Dimensions (w x h x d): 14 cm x 8 cm x 23 cm

Weight (without batteries): 0.80 kg 

MI 3121 Standard set

Instrument Smartec Insulation / Continuity

Soft hand strap

Test lead, 2 x 1.5 m

Test probe, 2 pcs (black, red)

Crocodile clip, 2 pcs (black, red)

Power supply adapter + 6 NiMH rechargeable batteries, type AA

Instruction manual on storage media

Short instruction manual

Instruction manual

Datasheet