Equipment - Resistance Welding Transformers

RoMan Impedance Meter
	RoMan's portable impedance meter features a variable low-voltage power source that measures tip-to-tip impedance of: Single phase AC resistance welding machines Portable Guns Transguns (with or without transformers) Kickless cables

Principle of Operation

The Impedance Master IM-91 with its variable low voltage 60 Hertz power source, is capable of driving a test current through the impedance of a resistance welding circuit.

The Impedance Master IM-91 measures the current, voltage and zero cross over of the two values, and calculates the impedance (Z), resistance (R), and the inductive reactance (X_L).

Features

• 6 Foot Current and Voltage Leads to provide access to resistance welding circuits in large tooling
• Portable
• Ease of Operation
• Easy to read with large LED readouts
• Easy current and voltage lead connection
• Direct readout in Micro Ohms
• Rugged Device
• RS232 Serial Printer Port

Specifications

Options

• Special adapters for current leads
• Special voltage probes
• Shorting bars for weld circuit

Uses

• Measures Impedance, AC Resistance, and Inductance
• Reactance at 60 Hertz Frequency of:
  Single Phase AC resistance welding machines
  Portable Guns
  Transguns without transformer
  Transguns with transformer
  Kickless Cable
• Measures 60 Hertz impedance of single phase AC welders from welding tip to power connection in the welding control
• Determine tip to tip short circuit current of single phase AC resistance welders
• Troubleshooting of single phase AC resistance welders
• Checking for current shunting in resistance welding tools (decrease of original impedance)
• Checking for deterioration of resistance welding tools (increase of original impedance)