CDI 501-I-DTT Torque Tester, 1/4″ Drive Digital, 5-50 in-lb (0.5-5.6 N·m)

Description

A torque screwdriver set to 20 in-lb looks exactly like one that has drifted to 26. Only a test shows the difference. The CDI 501-I-DTT torque tester gives you that test for the lightest tools in the kit. It is a digital unit with a 1/4 in drive, and it reads from 5 to 50 in-lb, or 0.5 to 5.6 N·m.

Why the lightest tools need their own tester

A tester works best in the middle of its range, just like a wrench. So a large bench unit gives coarse, less certain readings on a 10 in-lb tool. In contrast, a small tester such as the 501-I-DTT puts those values well inside its scale. A digital readout also shows the value as a number, so nobody has to judge a needle position.

Tools that fit the CDI 501-I-DTT torque tester

• Light adjustable wrenches, such as the CDI 501MRMH at 10-50 in-lb.
• Preset and adjustable torque screwdrivers, fitted with a suitable 1/4 in adapter.
• Small click wrenches used on instrument and terminal hardware.

Before you test, confirm that each tool setting falls between 5 and 50 in-lb. Then pick test points at the low, middle and high end of the tool’s own range.

Use in power, oil and gas, and solar work

The 501-I-DTT listing names electrical, oil and gas, and renewable energy as its target fields. For example, panel and switchgear crews can check the drivers they use on control terminals. Instrument technicians on process plants can verify the light wrenches they use on small fittings. Meanwhile, solar teams can test the tools that close connectors and junction box screws. In each case, a quick check before a job protects the joint record.

A weekly check routine

• Clamp the tester to a firm bench or a site case.
• Set the tool to a known value and apply load slowly.
• Read the result, repeat three times and note the spread.
• Tag any tool that reads outside your tolerance, then pull it from use.

Keeping the CDI 501-I-DTT torque tester reliable

Keep the unit clean, dry and away from vibration. Also avoid loading it past 50 in-lb, because overloads can harm a small sensor. Since the tester sets the standard for your tools, it needs its own independent calibration at a regular interval.

Order through our partner

Quotes for the CDI 501-I-DTT torque tester come from Lost in HCM, our supply partner in Vietnam. Note the tools you plan to check when you request a quote from Lost in HCM. You will find related benches under torque testers and calibration systems, brand details at cditorque.com, and direct help when you contact SMK Vietnam.

Questions from electrical teams

Can it check the CDI 501MRMH wrench?

Yes. That wrench covers 10-50 in-lb, which sits inside the tester’s 5-50 in-lb range.

What if my tools go above 50 in-lb?

Then step up to a larger CDI tester, such as the 1001-I-DTT, which reads 10-100 in-lb.

Which documents ship with the tester?

Our source listing is silent on that point. Therefore ask Lost in HCM to confirm the documents that ship with it.