MM-122A High Precision Miniature Weld Checker

The MM-122A is the very latest in stand-alone weld checker technology. This full function, cost effective unit is designed to monitor every type of welding control. The unit’s “miniature” design allows it to be mounted in any position on the welding machine. Limits for Peak or RMS current provide vital weld quality indicators. Multiple schedules, error signaling and versatile I/O make this unit as valuable for bench systems as it is for automated welding systems. Printer options or RS-232/485 provide for data collection and weld process analysis, critical in today’s advanced manufacturing processes.

The MM-122A uses a Toroidal coil for sensing. The correct coil needs to be matched to your application.

Features

Measures Single Phase AC, DC Inverter, AC Inverter, Capacitor Discharge, Transistor, Single-phase Rectified, 3-phase Rectified, 3-phase Low Frequency
Small Size allows for flexible mounting
Current Range: 0.010 – 199.9kA
RMS or PEAK Values
Conduction angle
Measures time in milliseconds or cycles
Upper and lower limits
31 Weld Schedules
“No weld current” Detection
Error signaling
Data communication via RS-232/485
Printer Connection with Standard Reports
Analog output for waveforms
Weld Counter
Measures stepped weld sequences
Good/No-Good, Hi/Low machine outputs

Sample MM-122A Printout (using the optional printer)

Millisecond Readings

Schedule Information

Error Only Printouts or all Summary Data

High/Low Indications

Miyachi MM-122A Weld Tester Specifications

Power Supply: Single Phase 100 – 240 VAC ±10% 50/60 Hz or 24 VDC ±10%
Current Sensor: Toroidal coil (pick the correct coil for your application)
Current Range
- 0.010-0.199kA (X10 coil)
- 0.100-1.999kA
- 1.00-19.99A
- 10.0-199.9kA
Monitored Value: RMS or PEAK
Time Range
- 0.5 to 500.0 cycles (AC and DC), 1-2000 mS (AC and DC)
- 0.50-25.00 mS (transistor)
- 0.50 9.99 mS / 05.0-99.9 mS (capacitor) Tp, Th
Conduction Time: 30 degrees through 180 degrees
Data Output: RS-232 / 485 or printer
Number of Schedules: 31
Dimensions (H x W x D): 2.8″ x 9.7″ x 7.5″ (70mm x 246mm x 190mm)
Weight: 4.2 lbs (1.9 kg)