Honeywell Torque Watch Gauge Series 651 Instructions

Honeywell Torque Watch Gauge Series 651

When making measurements with the Series 651Torque Watch Gauge, it is impor-tant to make certain that the weight of the Torque Watch or the test piece being measured do not effect the measurement. If binding force is applied either to the Torque Watch or test piece, erroneous readings may result.
When the test piece being measured is small and un-mounted, place the test piece in the Torque Watch chuck, hold the Torque Watch vertically with one hand and turn the test piece with the other hand. See Figure 1.

Figure 1

If the test piece is mounted and has a screwdriver slot, the easiest way to make a measurement is to insert a screwdriver bit in the Torque Watch chuck. The Torque Watch can then be applied to the shaft of the test piece without the application of unwanted force. See Figure 2.

Large and unmounted objects can usually be measured by applying the Torque Watch directly to the shaft of the test piece, especially if the object has low friction bear-ings. In such a case, the weight of the test piece will have a minimal effect on the measurement.

When used with the appropriate screwdriver bit or socket and driver adaptor, small screws and bolts can be tightened accurately to any torque value within the range of the Torque Watch.
Starting torque is measured by turning the test piece or the Torque Watch until a maximum reading is obtained, after which the reading is typically lower.
Stainless steel pins are employed as stops, permitting overloads of two times the normal range with-out damage to the Torque Watch.

The bidirectional feature of the 651 Torque Watch permits torque measurements and adjustments to be made in both clockwise and counterclockwise directions.
The Series 651 Torque Watch is equipped with a Memory Needle which can save considerable inspecting time on production lines. Because of its inherent accuracy it can also be used in laboratory calibration applica-tions.

The Memory Needle can be defined as a maximum reading pointer or a tolerance indicating pointer, and is used in the following manner:

• As a tolerance indicating pointer: adjust the knurled knob located in the center of the watch crystal, setting the Memory Needle to the desired torque value.
• As a maximum reading pointer: position the Memory Needle below the expected torque range, then measure the torque of the desired test piece as indicated in Figure 1. The final location of the Memory Needle will indicate the highest torque measured.

WARRANTY/REMEDY

Honeywell warrants goods of its manufacture as being free of defective materials and faulty workmanship. Contact your local sales office for warranty information. If warranted goods are returned to Honeywell during the period of coverage, Honeywell will repair or replace without charge those items it finds defective. The foregoing is Buyer’s sole remedy and is in lieu of all other warranties, expressed or implied, including those of merchantability and fitness for a particular purpose.
Specifications may change without notice. The information we supply is believed to be accu-rate and reliable as of this printing. However, we assume no responsibility for its use.
While we provide application assistance personally, through our literature and the Honeywell web site, it is up to the customer to determine the suitability of the product in the application.

Sensing and Control
Honeywell
100 Discovery Way
Acton, MA 01720 USA
Tel: (877) 384-1300; Fax: (978) 263-0630
www.honeywell.com/sensing/products/di