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Summary of Contents for Ametek PK II
- Page 1 Test Equipment Depot - 800.517.8431 - 99 Washington Street Melrose, MA 02176 TestEquipmentDepot.com FORM 85-02 June 1999 Revision 6 ® AMETEK PK II Pneumatic Deadweight Tester Operating Instructions ® CALIBRATION INSTRUMENTS...
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Page 2: Table Of Contents
TABLE OF CONTENTS Page 1.0 INTRODUCTION AND PRODUCT OVERVIEW ............. 1.1 PRODUCT FEATURES ................... 1.2 PK II PHYSICAL DIMENSIONS ................2.0 CORRECTION FACTORS ..................2.1 Corrections for Gravity ................... 2.2 Corrections for Temperature ................... 2.3 Corrections for Air Head .................. - Page 3 This instrument is warranted against defects in workmanship, material and design for one (1) year from date of delivery to the extent that AMETEK will, at its sole option, repair or replace the instrument or any part thereof which is defective, provided, however, that this warranty shall not apply to instruments subjected to tampering or abuse, or exposed to highly corrosive condi ions.
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Page 4: 1.0 Introduction And Product Overview
980.665cm/sec . The unit is intended for low pressure applications up to 30 PSIG (2 bar). The PK II tester may also be cal brated to the user’s local gravity or to inches or centimeters of H O at 20°C per ISA recommended... -
Page 5: Pk Ii Physical Dimensions
PK II PHYSICAL DIMENSIONS 8.875 in 225.4 mm 12.75 in 323.85 mm 6.125 in 155.56 mm 3.0 in 76.2 mm Figure 1.1 PK II Dimensions (Models 104, 254, 304 and Medical) - 5 -... - Page 6 PK II PHYSICAL DIMENSIONS 12.875 in 327.03 mm Figure 1.2 PK II Dimensions (Models 20SS, 30SS, 654, 854, 2000GM, 2010GM 200N, 201N, 500CM, 1000CM, 1500CM, 2000CM, 2B, 2B01) - 6 -...
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Page 7: Correction Factors
All of these corrections, with the exception of local gravity (except when specified), thermal expansion, and air heads have been corrected for by AMETEK prior to the tester being shipped. The following technique is suggested to compute the corrected tester output pressure... - Page 8 Temperature If the coefficient of expansion of the ball and nozzle is positive, the effective area will increase with increasing temperature resulting in a corresponding decrease in pressure. Corrections can be made using the following formula: 1 + 1.67 x 10 (T - 23°C) Where: = tester output pressure corrected only for gravity...
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Page 9: Materials Necessary For Recertification
Testers used on a more frequent basis should be tested more frequently. MATERIALS NECESSARY FOR RECERTIFICATION Both the tester assembly and weight set should be returned to AMETEK in order to allow for calibration of the tester as a “system”. Pressure is a derived parameter requiring determina- tions of both effective area and force (weight-mass). -
Page 10: Specifications
All PK II Testers are shipped with tester and weight contained within a carrying case. The instrument is available with accuracies of +0.015%, +0.025% or +0.05% of indicated read- ing with stainless steel weights. -
Page 11: Pressure In Inches Of Water @ 20°C
Table 2b Pressure in Inches of Water @ 20°C WEIGHT CARRIER Weights Furnished per Pressure Increment MODEL AND BALL (in H 1” H 2” H 5” H 10” H 20” H 50” H 100” H PK2-104WC-SS 4” H PK2-254WC-SS 4” H PK2-304WC-SS 4”... -
Page 12: Pressure In Kilopascals
Table 2d Pressure in Kilopascals (KPa) WEIGHT CARRIER Weights Furnished per Pressure Increment MODEL AND BALL (KPa) 0.5 KPa 1 KPa 2 KPa 4 KPa 10 KPa 20 KPa 50 KPa PK2-200N-SS 2 KPa PK2-201N-SS 2 KPa & 1 KPa Part Number K-1279-2 (1KPa) K-1265-12 (2 KPa) -
Page 13: Pressure In Bar
Table 2f Pressure in Bar WEIGHT CARRIER Weights Furnished per Pressure Increment MODEL AND BALL (Bar) 0.005 bar 0.01 Bar 0.02 Bar 0.04 Bar 0.1 Bar 0.2 Bar 0.5 Bar PK2-2B-SS 0.02 Bar PK2-.01-SS 0.01 and 0.02 Bar Part Number K-2047-17 K-2047-18 K-1294-2 K-2046-29 K-2030-1 K-2031-3 K-2039-12 Table 2g... -
Page 14: Assembly And Setup
AMETEK recommends that the ceramic ball and nozzle be kept in place at all times, except when cleaning is required. This will prevent dirt from entering the ball and nozzle assembly. -
Page 15: Cleaning The Ball And Nozzle
5.1.3 Cleaning Ball and Nozzle AMETEK recommends cleaning the ceramic ball and nozzle with a residue-free solvent. Using a cottom swab or soft cloth with a solvent such as alcohol, wipe the inside of the nozzle. Dampen a clean cloth with alcohol or other residue-resistant solvent, and clean the ceramic ball by rotating it within the cloth. -
Page 17: Leveling The Tester
LEVELING THE TESTER For proper operation, the PK II tester should be placed on a support that is solid and free from vibration. 5.2.1 Coarse Leveling Both coarse and fine leveling are supported by the PK II tester. Coarse leveling to raise... -
Page 18: Connection
CONNECTION Connect a supply of clean, dry and oil-free air or nitrogen to the connection below the valve marked “INLET”. CAUTION The use of other gases will result in an incorrect reading. Always use clean, dry and oil-free air or nitrogen. When using the tester thru full range, regulate the supply pressure at 30 PSIG minimum, however take care NOT TO REGULATE THE SUPPLY PRESSURE OVER 100 PSIG. -
Page 19: Operating Instructions
Step 2 Admit the supply pressure to the tester by turning on the valve marked “INLET”. WARNING NEVER connect the PK II tester to a high pressure source. Applying high pressure may result in personal injury and damage to the tester. - Page 20 “VENT” position. CAUTION The ceramic ball, weight carrier and weights comprise a “system” for your PK II calibrator and should be used together to ensure a correct calibration. Accuracy will be affected if the ceramic ball, weight carrier and weights are interchanged.
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Page 21: Maintenance
MAINTENANCE OUTPUT SYSTEM The PK II tester features an output tank that may be cleaned. If any contamination is evident in the output system, it may be easily removed using the following procedure: Step 1 Remove the weights and weight carrier from the tester leaving the ceramic ball in place. - Page 22 Step 4 Fully open both the INLET and OUTLET valves. Step 5 While holding the ceramic ball (to ensure that the ball does not fall out), tilt the tester so that the output connection is pointing down- ward. Step 6 Pressure the ball into its socket to provide an output pressure sufficient to purge the sys- tem.
- Page 23 Step 9 Remove the nozzle. Step 10 Place a cloth or absorbent material over the nozzle body. Step 11 Apply 15 to 30 PSI to the OUTLET for a few seconds or until the material on the nozzle body is clean and dry when removed. Mild solvents may be applied to the outlet fitting and flushed out when applying pressure.
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Page 24: Input System
INPUT SYSTEM The PK II tester features an input filter located within the 1/4” male tube fitting on the outside of the PK II tester case. As this filter becomes dirty, the tester may react by not supporting the weights. To correct, remove the filter and examine the NPT opening for any contamina- tion. -
Page 25: Troubleshooting
TROUBLESHOOTING The following represent common troubleshooting tips for the PK II tester. CORRECTING FOR POOR WEIGHT ROTATION If weights do not rotate freely as described in Section 6.0, Step 4, perform the following: Step 1 Check the cleanliness of the ceramic ball and nozzle. -
Page 26: Replacing The Nozzle And O-Ring
Step 4 Check for leaks by the presence of bubbles on joints. Step 5 If a leak is found, the PK II Tester must be returned to AMETEK for repair. WARNING Leak checks should be done in the order described above, otherwise the source of the leak may not be accurately identified. -
Page 27: Parts List
PARTS LIST PART NUMBER DESCRIPTION K-1035 Nameplate K-1048 Nozzle Body Restriction Screw K-1050/ETCH Nozzle 10-90013 Nozzle O-Ring K-1051 Ceramic Ball K-1182 Spring K-1193 Retainer K-1209 Regulator Nozzle Block K-1212 Disc, Clip and Diaphragm Assembly K-1216 Regulator Ratio Disc Diaphragm (Stem Side) K-1217 Regulator Ratio Disc Diaphragm (Flat) K-1223... - Page 28 ® AMETEK CALIBRATION INSTRUMENTS Test Equipment Depot - 800.517.8431 - 99 Washington Street Melrose, MA 02176 TestEquipmentDepot.com ISO 9001 Manufacturer Pmted in U.S A.
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