HHTQ35 Digital Torque Gauges
User’s Guide
14
Selection Description
N Units
Output format includes the value and unit of measure. Clockwise values have
positive polarity, counter-clockwise values have negative polarity.
Numeric Only
Output format includes the value only. Polarity same as above.
Invert Polarity
Clockwise values have negative polarity, counter-clockwise values have positive
polarity. May be selected in addition to the N Units / Numeric Only
selection.
Omit Polarity
Both directions are formatted with positive polarity. May be selected in addition to
the N Units / Numeric Only selection.
Individual data points may be transmitted by pressing
DATA
.
10 CALIBRATION
10.1 Initial Physical Setup
The sensor should be mounted vertically to a test stand or fixture rugged enough to withstand a load
equal to the full capacity of the instrument. Vertical orientation is preferable to avoid side loading, which
can affect the readings. Suitable certified calibration equipment is required, and caution should be taken
while handling such equipment.
10.2 Calibration Procedure
1. Select
Calibration
from the menu. The display will appear as follows:
The sensor can be calibrated at up to 10 points in each direction. Enter the number of calibration
points for each direction. At least one point must be selected for each direction.
Note:
To achieve the accuracy specification of ±0.5% of full scale, it is recommended to calibrate
the sensor at 5 or more even increments in both the clockwise and counter-clockwise directions.
For example, a sensor with capacity of 50 lbFin should be calibrated at 10, 20, 30, 40, and 50
lbFin loads in each direction.
2. To escape the
Calibration
menu at any time, press
ESCAPE
. The display will appear as follows:
DATA FORMAT
*
N Units
Numeric Only
Invert Polarity
Omit Polarity
CALIBRATION
ENTER # CAL POINTS
(1 TO 10)
CLOCKWISE:
5
COUNTER-CLOCKWISE:
5
