The DP140 is factory-calibrated for installation on a wall or other vertical surface, which requires no field adjustment. If you mount the DP140 on a horizontal surface, a slight zero shift may occur that depends on the range of the sensor. Correct any zero or span shift by software adjustment in the user’s control system. For calibration, access both zero and span potentiometers under the cover of the unit, on either side of the terminal strip. See Figure 1.
Note: A trained individual must complete calibrations with the correct equipment and
standards for the pressure range of the DP140.
Figure 1. Calibration of the DP140 transducer
