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

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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
5-45.1.5 Overrange Stop AdjustmentThe overrange stop prevents damage to both theflapper-nozzle and the dashpot. Before calibrating,check that the stop is correctly adjusted.IMPORTANT5.2 Supply Air FilterNever move the force bar if the overrange stop isloose or disconnected.1. Turn on air supply. Apply pressure to highpressureside so that output is stabilized at avalue between 0.2 and 1.0 kgf/cm 2 or bar, 20and 100 kPa, or 3 and 15 psi.2. Clearance between both sides of overrangestop (U-shaped bracket) and plate to besufficient to permit sliding piece of paperbetween them.3. If not, loosen screws with 3/32" hex-key wrenchand reposition stop to get correct clearance.Retighten screws.Overrange stopF0512.aiBlow filter out at least once a day.Figure 5.4 Air Filter5.3 To Clean RestrictorA plugged restrictor will cause low output pressure.AmplifierTweezersScrewWirePrior to August, 1975 restrictorwas screwed into side of casting.O-ringF0513.aiF0510.ai4. With zero elevation kit, loosen lockscrew with3/32" hex-key wrench. Hold eccentric pin incorrect position with opened wrench and tightenlockscrew.Overrange stopFigure 5.5Cleaning of Restrictor1. Remove amplifier (Refer to section 5.8).2. Lift out restrictor with tweezers.3. Clean with a 0.18 mm dia. wire.4. Apply thin film of Vaseline, or similar lubricant toO-ring.4.Transmitter withzero elevation kitTransmitter withzero suppression kitF0511.aiIM 02C01B06-01E
Page 3 and 4: iiAppendix 1.5.9.1 Dashpot Removal.
Page 5 and 6: 1-21.1 Safety PrecautionsWARNING•
Page 7 and 8: 2.3 Standard SpecificationsSpan Lim
Page 9 and 10: 2-42.6 Dimensions118Allow clearance
Page 11: 4. Operation4.1 Zero Adjustment4.1.
Page 16 and 17: 5-55.4 To Clean Nozzle AssemblyAn a
Page 18: 5-75.9 Further DisassemblyIMPORTANT
Page 21 and 22: 5-105.9.10 Flapper AlignmentThe fla
Page 23 and 24: A-2A1.3 Calibration Procedure using
Page 25 and 26: 2Nov. 2012Subject to change without
Page 27: 4Item Part No. Qty DescriptionInteg

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

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