Model Y/11DM Pneumatic Differential Pressure ... - Yokogawa

5-35.1.3 To Change Range of TransmitterThe transmitter range may be changed within thelimits of the capsule by adjusting the span and zeroadjustments. If the desired range is outside thelimits of the capsule installed in the transmitter, adifferent capsule is required. Refer to section 2.3(Table 2.1) for the span and pressure limits for thevarious capsules.• Capsule IdentificationCapsules can be identified by the designation(B, C, D, or E) stamped on their faces, or by thedimensions indicated below.Note: Styles A and B transmitters cannot use Style C transmittercapsules.5.1.4 Flexure Cap Screw AdjustmentIf bellows capsule was removed or flexure capscrew loosened, before calibrating, adjust capscrew as follows:Zero AdjustmentScrewHex-key wrenchF0509.aidFigure 5.3Flexure Cap Screw AdjustmentStyles A and BStyle CdF0508.aiF0507.aiDimension Capsule Designationd (mm) Style C Styles A & B13 B A10 C B6 D C4 E DFigure 5.2 Capsule Identification1. Set up the calibration equipment (Refer tosection 5.1.1).2. If transmitter has zero elevation or zerosuppression kit, disconnect spring from forcebar (Refer to Step 2 of section 5.1.2).3. Vent pressure signals to transmitter.4. Remove bottom plug.5. Insert a 9/64" hex-key wrench and loosenflexure cap screw.6. Adjust zero screw so that output is 0.2 kgf/cm 2or bar, 20 kPa, or 3 psi.7. Carefully tighten flexure cap screw and observeoutput.If output changes less than 0.014 kgf/cm 2 orbar, 1.4 kPa, or 0.2 psi, adjust zero screw sothat output is 0.2kgf/cm 2 or bar, 20kPa, or3psi. Replace bottom plug, and proceed withcalibration.If output change exceeds 0.014 kgf/cm 2 or bar,1.4 kPa, or 0.2 psi, repeat Steps 5, 6, and 7.If change persists, check capsule installation(Refer to section 5.6), then repeat Flexure CapScrew Adjustment.IM 02C01B06-01E