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Ametek PK II Скачать руководство пользователя страница 4

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1.0 INTRODUCTION AND PRODUCT OVERVIEW

The AMETEK

®

PK II Pneumatic Deadweight Tester is a primary standard that produces a

pressure by applying force (weight set) over area (the ceramic ball and nozzle). The PK II
tester is NIST traceable and accurate to +0.015% of indicated reading using stainless steel
weights cal brated to international standard gravity at 980.665cm/sec

2

. 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

2

O at 20°C per ISA recommended

practices, or to reference water columns at 60°F per AGA standard practices.

The PK II tester is self-regulating with accuracy independent of the operator. The tester
utilizes a frictionless ceramic ball which floats on a layer of air within a stainless steel
cylinder.

The PK II tester features a sturdy cast-metal base with integral quick-leveling system for
field or laboratory use. The case also contains a tripod fixture allowing the unit to be tripod
mounted in the field.

1.1 PRODUCT FEATURES

The key features of the

PK II Pneumatic Deadweight Tester are:

G

Accuracy up to +0.015% of indicated reading

G

Floating ball operation eliminates need to rotate weights during testing

G

Self regulating input air flow maintains ball and weights in a float position and compen-
sates for variations in air supply pressure

G

Rugged ceramic measuring ball withstands harsh environments and field use

G

Monocontaminating fluid eliminates the need to clean instruments after cal bration or
before use

G

Close cover operation eliminates wind effects in field cal brations

G

Multi-position ball valves for both the inlet and outlet connections ensures trouble-free
operation

G

Certificate of Accuracy and Traceability available with area, mass and intrinsic correc-
tion factors

G

Rugged aluminum housing offers long life. Top (Front) housing is revers ble.

Test Equipment Depot - 800.517.8431 - 99 Washington Street Melrose, MA 02176

TestEquipmentDepot.com

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Содержание PK II

Страница 1: ...PK II Pneumatic Deadweight Tester Operating Instructions FORM 85 02 June 1999 Revision 6 CALIBRATIONINSTRUMENTS Test Equipment Depot 800 517 8431 99 Washington Street Melrose MA 02176 TestEquipmentDep...

Страница 2: ...PROCEDURE 8 3 1 Frequency of Certification 8 3 2 Materials Necessary for Recertification 8 4 0 SPECIFICATIONS 9 5 0 ASSEMBLY AND SETUP 13 5 1 Ball and Nozzle 13 5 1 1 Removing the Nozzle 13 5 1 2 Remo...

Страница 3: ...arranty shall not apply to instruments subjected to tampering or abuse or exposed to highly corrosive condi ions THIS WARRANTY IS IN LIEU OF ALL OTHER WARRANTIES WHETHER EXPRESS OR IMPLIED AND AMETEK...

Страница 4: ...ral quick leveling system for field or laboratory use The case also contains a tripod fixture allowing the unit to be tripod mounted in the field 1 1 PRODUCT FEATURES The key features of the PK II Pne...

Страница 5: ...5 1 2 PK II PHYSICAL DIMENSIONS Figure 1 1 PK II Dimensions Models 104 254 304 and Medical 8 875in 225 4mm 12 75in 323 85mm 3 0 in 76 2mm 6 125in 155 56mm...

Страница 6: ...6 1 2 PK II PHYSICAL DIMENSIONS Figure 1 2 PK II Dimensions Models 20SS 30SS 654 854 2000GM 2010GM 200N 201N 500CM 1000CM 1500CM 2000CM 2B 2B01 12 75 in 323 85 mm 12 875in 327 03mm 8 0 in 203 2 mm...

Страница 7: ...s suggested to compute the corrected tester output pressure readings Gravity Local gravity values differ depending upon geographic locations Pressure is defined as force per unit area so that mass val...

Страница 8: ...hen pressurized a correction is required only when the gauge height or reference plane of the unit being calibrated is either higher or lower than that of the pneumatic tester The reference plane of t...

Страница 9: ...nt of traceability to NIST G Calibration with a Cal bration Report Certificate A report that outlines detailed information about the calibration process This includes actual calibration data traceabil...

Страница 10: ...able 2b PK2 254WC SS 4 254 H2 O 1 H2 O Table 2b PK2 304WC SS 4 304 H2 O 1 H2 O Table 2b PK2 654WC SS 4 654 H2 O 1 H2 O Table 2b PK2 854WC SS 4 854 H2 O 1 H2 O Table 2b PK2 2000GM SS 25 2000 gm cm2 25...

Страница 11: ...2 1 2 1 2 7 Part Number K 1279 4 H2 O K 1265 1 10 H2 O K 1277 K 1278 K 2047 1 K 1294 K 2046 16 K 2030 K 2031 Table 2c Pressure in Grams per Square Centimeter g cm2 WEIGHT CARRIER Weights Furnished pe...

Страница 12: ...7 K 2047 18 K 1294 2 K 2046 29 K 2030 1 K 2031 3 K 2039 12 Table 2e Pressure in Centimeters of Water 20 C WEIGHT CARRIER Weights Furnished per Pressure Increment MODEL AND BALL cm H2 O 10cm H2 O 20cm...

Страница 13: ...1 2 1 3 PK2 01 SS 0 01 and 0 02 Bar 1 1 2 1 2 1 3 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 Pressure in Millimeters of Mercury Hg WEIGHT CARRIER Weights F...

Страница 14: ...Removing Ceramic Ball Cup one hand over the top beveled end of the nozzle and push from the bottom of the nozzle to remove the ball If the ball tends to stick when being removed DO NOT FORCE IT Forci...

Страница 15: ...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...

Страница 16: ......

Страница 17: ...of the weight insert and rotating the knurled nut until it contacts the bottom of the case 5 2 2 Fine Leveling Fine leveling is obtained by rotating the knurled rod clockwise to raise and counter clo...

Страница 18: ...ck for leaks load the tester so as to apply a pressure indicating instrument and then turn off the tester output valve If the pressure indicated by the instrument being calibrated holds it is safe to...

Страница 19: ...ng high pressure may result in personal injury and damage to the tester NEVER apply a pressure greater than 100 PSIG Step 3 Add weights as required Exercise caution when handling the weights Handle on...

Страница 20: ...Once calibration is complete the downstream pressure may be vented by turning the outlet valve to the VENT position CAUTION The ceramic ball weight carrier and weights comprise a system for your PK II...

Страница 21: ...e 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 b...

Страница 22: ...g down ward Step 6 Pressure the ball into its socket to provide an output pressure sufficient to purge the sys tem Step 7 After completing Steps 1 6 disconnect the air supply from the INLET and connec...

Страница 23: ...the nozzle body is clean and dry when removed Mild solvents may be applied to the outlet fitting and flushed out when applying pressure If a solvent is used it should not leave any film or residue onc...

Страница 24: ...EANING THE INPUT FILTER Remove the input filter fitting and clean it by backflushing from the downstream end with clean compressed air If an ultrasonic cleaner is available AMETEK recommends that the...

Страница 25: ...r Step 4 Check for adequate air supply 8 2 OUTPUT AND INTERNAL LEAKAGE The accuracy of the tester is seriously undermined by leaks in the output connections and or instrument being calibrated The foll...

Страница 26: ...epair WARNING Leak checks should be done in the order described above otherwise the source of the leak may not be accurately identified CAUTION DO NOT ATTEMPT TO REPAIR INTERNAL LEAKS Return the PK II...

Страница 27: ...K 1297 Capacity Tank Assembly K 1303 Nozzle Body Restriction Assembly K 1831 Tripod Mounting Plate K 1832 Level Adjust Stud K 1833 Level Retainer Stud K 1834 Leveling Foot K 1835 Leveling Foot Assembl...

Страница 28: ...AMETEK CALIBRATION INSTRUMENTS ISO 9001 Manufacturer Pmted in U S A Test Equipment Depot 800 517 8431 99 Washington Street Melrose MA 02176 TestEquipmentDepot com...

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