Weller WA2000 User Manual

WA2000

SOLDERING IRON ANALYZER

INSTRUCTION MANUAL

INTRODUCTION
The WA2000 soldering iron analyzer was developed for testing soldering irons for

compliance with the DOD-STD-2000 and the new MIL-STD-2000 specifications. This
portable unit is capable of testing tip temperature, tip to ground resistance and tip to
ground noise (mVRMS). Correctly used and maintained, it is the most accurate of any
comparable tester currently available on the market. Please read this document
thoroughly, prior to using the WA2000.

TEMPERATURE

Range: 32 to 10400°F (0 – 560°C)
*Accuracy: Contact Pyrometer, ±.1% over a ten degree span (stability).
Auxiliary T/C, ±.5% of reading (Absolute) ±1 digit.
Resolution: 1°F or 1°C, user selectable

Sensor: CP-01** or CP-02** Contact Pyrometer, K-111, K-121, K-181 Type K

Thermocouple assembly.

*NOTE: Analyzer accuracy only. Tolerance of thermocouple and external fixturing

must be added.

**Patent pending

TIP OHMS TO GROUND

Range: 0 to 100 Ohms
Accuracy: 1% of reading ±.2 Ohms

Resolution: .1 Ohms
Test Current: 10 milliamperes AC Current Sou rce to RMS Conversion.
US Patent #5,073,758

TIP VOLTAGE TO GROUND

Range: 0 to 100 mV RMS, Crest Factor of 3
Accuracy: 1% of Reading ±0.2mV

Resolution: 0.1 mV
Measurement: True RMS conversion

Digital Display: 3 1/2 Digit LCD
Power: 9VDC Battery

Battery Life: 50hrs.

2005 Cooper Industries, Inc. 1 S805
3/05

TIP TEMPERATURE MEASUREMENT

The unit has the ability to check for either temperature stability (T) or absolute
temperature. To perform these tests, two methods must be used.

TEMPERATURE STABIL ITY

This test is used for compliance with the MIL-STD-2000 requirement. The detachable
contact pyrometers were designed for use in this test. The pyrometers will not give
accurate absolute measurements. Due to loading effects, the temperature measured

will be lower than the actual tip temperature (about 30°F or 17°C); however, stability can
easily be checked with the pyrometer. The T measured has an accuracy of better than
±0.1% over a ten degree span. This is more than adequate to fulfill the temperature
measurement requirements of the MIL-STD-2000 specification.

ABSOLUTE MEASUREMENT

The K-111 and K-181 thermocouple assemblies have been provided for making
absolute temperature measurements. These assemblies can also be used to monitor
active soldering and can measure temperature loading, excursions and heater
response. Although not a requirement for compliance to the MIL-STD-2000
specification, it does provide a good tool for process control and improvement.

MEASUREMENT PROCEDURE

1. Set the rotary selector switch to the TEMP position and the slide switch to °C or
°F to select the desired unit of measure.

2. Plug either a contact pyrometer or thermocouple assembly into the TEST
receptacle. If using a pyrometer, place the tinned tip of the iron to be tested onto
the contact pyrometer. Using the iron "holder" provided with the WA2000 will aid
in obtaining an accurate reading. Add additional solder to increase contact area
to each side of the pyrometer. Response time will be 5 seconds or less.

3. Record both the low and the high temperature reading and calculate T = (T

-

H

TL).

*** PLEASE NOTE ***

The ground adapter is provided for testing tip noise and resistance only. For
temperature measurements, the ground adapter must not be connected to the tester or
temperature errors can occur.

2005 Cooper Industries, Inc. 2 S805
3/05