Brands     Vishay Measurements Group     Interactive Guide     Instruments     700 System     Model 700 (Portable Strain Gage Welding and Soldering Unit)



Model
700
Portable Strain Gage Welding and Soldering Unit  

  
   

 

Description
A battery-operated capacitive discharge spot welder for attaching and wiring weldable strain gages and temperature sensors.

In strain gage testing, there are instances when the gages cannot be bonded to the test specimen or structure by conventional adhesive bonding. The solution to this problem is to install Micro-Measurements weldable strain gages. These gages are attached by spot welding, and the Model 700 Portable Welder has been designed to efficiently and conveniently perform this function. The unit also features a battery-operated soldering pencil for attaching leadwires to the strain gage.

  • Features
  • Separate visual and audible indicators monitor welder status -- Weld energy is continuously adjustable from 3 to 50 joules, making the Model 700 an excellent choice for installing weldable strain gages and temperature sensors, as well as small thermocouples and light gauge metal.
  • Supplied with a lightweight soldering pencil -- A front-panel control adjusts soldering tip temperature for a wide range of soldering applications in the field or in the laboratory.
  • "Low-battery" light to warn the user when the internal, sealed lead-acid battery requires charging -- A built-in charger operates automatically when plugged into 115 or 230 Vac, to ensure full battery charge with no danger of overcharging. Indicator lights monitor battery charge rate.
  • Convenient storage space for cables and instruction manual.
     

Specifications
All specifications nominal or typical at +23° C unless noted.

Welding
Weld Energy Range :
3 to 50 joules, continuously adjustable by front-panel control.
Maximum open-circuit voltage less than 25 Vdc.

Maximum Weld Repetition Rate :
20 per minute at 30 joules, typical.

Number of Welds per Battery Charge :
Approximately 2000 at weld energy setting of 30 joules.
This is equivalent to 40 Micro-Measurements weldable gage installations.

Battery Charge Time (from full discharge) :
12 hours to 75% full charge, 18 hours to full charge.

Battery :
One sealed, rechargeable lead-acid (non-liquid) type, 12 volt, 5 ampere-hour.

Welding Probe :
Manually fired with trigger control and "steady-rest."

Welding Cables :
Two 5 ft (1.5 m), fully flexible.

Weld Energy Monitor :
Calibrated front-panel control with READY and WAIT indicators;
audible indication selectable.

Soldering
Temperature Control :
Continuously variable with bands indicating melting range of solders.

Soldering Pencil :
1.1 oz (31 gm), rated at 25 watts, 12 volt operation.
Tip temperature adjustable from +200° to +900° F (+90° to +480° C).

Soldering Duration :
4 hours using +361° F (+183° C) melting point solders (with initial full charge).

General
Overall Size :
9 L x 9 W x 9-3/4 H in (230 x 230 x 250 mm).

Weight :
21 lb (9.5 kg).

Input Power for Recharging :
115 Vac or 230 Vac, 50-60 Hz.

Operating and Storage Temperature Range :
0° to + 120° F (-20° to +50° C).