CEM DT-9985 Insulation Multimeter

— for field service, electricians , everyday troubleshooting

Categories: Digital Multimeters, Insulation Tester

CEM DT-9985 is a two-in-one electrical testing device that works as both a regular digital multimeter + a high-voltage insulation resistance tester.

The insulation multimeter is essential for professionals who both troubleshoot live systems and perform preventive maintenance

DT-9985 support test voltage from 125V to 1000V, max resistance 4000 MΩ (4 GΩ)

For everyday troubleshooting, like Ground faults, Short circuits, Unexpected current losses, this insulation multimeter is practical tool.

For more industrial usage or sensitive electronics , DT-6505 is a better choice.

Safety:

IEC61010-1 CAT IV 600V / CAT III 1000V
UL, CSA, and TÜV listed for maximum safety and global compliance

Applications:

Testing Insulation Resistance – measure how well insulation prevents current leakage
Checking Cables– Finding damaged outer jackets or trapped moisture inside long underground or overhead power cables.
Troubleshooting Electrical Faults – Short circuits, unexpected current loss
Diagnosing Equipment– First, using the standard multimeter functions (like voltage and diode test) to check a drive's input rectifier. Then, switching to insulation test mode to check the cables that supply power to it.

Features

tool application	for field service, electricians , everyday troubleshooting
safety	Auto discharge of voltage test signal; IEC/EN 61010: CAT IV 600 V / CAT III 1000 V;

variable high-voltage output	125V / 250V / 500V / 1000V
gigaohm resistance range	0.001MΩ up to 4000 MΩ (4 GΩ)
automatic safety discharge	yes

full standard DMM	Measurement of AC/DC voltage, current, resistance, capacitance, frequency, temperature, duty cycle, and continuity, etc.
True RMS	Industrial systems often use non-linear loads (VFDs, inverters, motors). True RMS ensures accurate readings even with distorted waveforms
High Accuracy	DCV basic accuracy 0.1%

Data Logging	a built-in logging feature

Ease of use	Modern design, Easy-to-Use
certification	CE, TüV certification