TL-WELD-Series

Supported Applications

The Omega TL-WELD Series is a thermocouple and fine wire welder designed for sensor manufacturers producing commercial-grade thermocouple junctions. It serves users in test and development laboratories requiring large numbers of exposed junction thermocouples. The instrument enables the production of quality beaded thermocouples with minimal practice.

Operating Conditions & Performance

The TL-WELD supports welding wires up to 1.1 mm (0.043") in diameter and delivers an energy output range of 0 to 60 joules. The device operates on a standard power supply of 110 to 120/220 to 250 Vac selectable, 50 to 60 Hz, with maximum power consumption rated at 170 VA dropping to 20 VA during charging. A duty cycle of minimum 5 to 10 welds per minute is supported.

The unit includes an argon gas shield facility for improved weld integrity. When argon is available, the device features an automatic purge function that triggers a momentary purge before welding; it can also operate without argon gas. The physical dimensions are 220 W x 120 H x 250 mm D (8.7 x 4.7 x 9.9") with a weight of 4 kg (8.8 lb).

Front Panel Controls

• Arc: Argon gas and weld current controlled by the “Weld” switch; LED indication.
• Purge: Allows the gas line and electrode shield to be purged of air prior to a new welding period.
• Weld Switch: Initiates a welding operation (in “arc” mode also opens the Argon valve).
• Argon LED: Indicates when the Argon control valve is open and gas is flowing.
• Wait LED: Glows when weld charge is building.
• Ready LED: “Ready to Weld” indication.
• Power: Rotary control of the capacitor charge voltage.
• Level Selector: Selects total capacitance available with LED indication: “LO” = 0 to 6 Joules, “MED” = 0 to 28 Joules, “HI” = 0 to 64 Joules.

Safety and Operational Notes

• Always protect the eyes with a suitable filter during welding; never view weld discharge with the naked eye.
• Avoid touching the rear of the welder during operation as the power switch heat sink may run hot, which is a normal operating condition.
• Do not allow the hand to directly contact the welding electrode during operation.

Configuration Options

The TL-WELD Series includes standard accessories and optional replacement parts. The device supports front-panel controls or footswitch operation for one-handed use.

Included Accessories (Standard)

• Wire Holding Pliers With Lead
• Safety Glasses
• Magnifying Eyeglass
• Spare Carbon Electrode
• Spare 2A Fuse
• Argon Hose
• Hexagon key (for electrode change)
• Mains Lead
• Footswitch (Allows One Handed Operation)

Replacement Parts and Options

• TL-WELD-CAR: Replacement carbon electrodes (package of 5).
• TL-WELD-PL: Spare insulated pliers for TL-WELD.

Key Product Differences

The series is identified by the model number guide: TL-WELD - <ACCESSORY>. The primary configuration, TL-WELD, describes the thermocouple and fine wire welder. Distinct part numbers exist for specific replacement components:

• TL-WELD: Thermocouple and fine wire welder.
• TL-WELD-CAR: Replacement carbon electrodes (package of 5).
• TL-WELD-PL: Spare insulated pliers for TL-WELD.

The instrument carries CE approval and includes a 1-year warranty. It is made in the United Kingdom.