Ashcroft GC55 Скачать руководство пользователя страница 18 | Manualshive

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background image

18

operation of Window Comparator

12. Loop Check Mode

setup steps
In measurement mode press the

+

▲▼

keys (release within

3 sec.) to change to Loop Check Mode.

Regardless of applied pressure, display and analog output can be tested
manually using the

▲▼

keys, useful for simulation testing of the analog

output and switch output wiring. After the switch setting press

for 1

sec. to change into Loop Check Mode. The initial value will be the value
displayed immediately before entering Loop check mode.

lop

MODE

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Содержание GC55

Страница 1: ...d CT 06614 USA Tel 203 378 8281 Fax 203 385 0402 www ashcroft com All sales subject to standard terms and conditions of sale I M011 10158 Rev C 5 11 Version 1 0 5 11 Installation and Maintenance Instructions for GC55 Differential Pressure Transducer ...

Страница 2: ...2 ...

Страница 3: ...ges are particularly damaging to pressure transducers if the pipe is originally empty To avoid damaging surges fluid lines should remain full if possible pumps should be brought up to power slowly and valves opened slowly To avoid damage from both fluid hammer and surges a surge chamber should be installed Symptoms of fluid hammer and surge s damaging effects Pressure transducer exhibits an output...

Страница 4: ...4 ...

Страница 5: ...s 7 8 3 Installation 8 4 Wiring 9 5 noise Prevention 9 6 storage 9 7 Maintenance 9 8 Menu navigation 11 9 Function setting Mode 12 10 switch setting Mode 15 11 switch operation 17 12 Loop Check Mode 18 13 other Functions 19 14 Maintenance Warranty 22 ...

Страница 6: ...rials Fluids and gases compatible with 304SS sensor housing and 17 4ph SS sensor diaphragm output Analog output 4 20mA or 1 5Vdc Accuracy 0 5 FS Accuracy includes the effects of Linearity Hysteresis and Repeatability Temperature characteristics P Zero 0 1 F S C Span 0 1 F S C P1 P2 Zero 0 05 F S C Span 0 05 F S C Response Time 20msec 10 0 sec by user Output Resolution 0 2 FS Pressure switch output...

Страница 7: ...o condensation storage Temperature 20 to 60 C 4 to 140 F non freezing Case construction IP65 NEMA 4 Pressure Connections 1 8 NPT Female 2 places enclosure Material Aluminum Weight 18 ounces Option selected at time of order 2 Dimension Drawings ...

Страница 8: ... can be minimized and without direct sunlight on the display in compliance with IP64 environmental rating Pressure Port Connections 1 8 NPT female 11 2 turns past hand tight Mounting Remove the GC55 cover 4 screws and attach via through holes 2 places 0 20 diameter ...

Страница 9: ...g with regular zero adjustment if necessary 8 Menu navigation Functions PLEASE NOTE Only the SEL function is available from the case exterior accesss to all other functions requires the cover to be removed Do not use sharp objects to press the keys as this can puncture the panel See illustra tion 1 and illustration 2 External Panel and Functions SEL key can be operated externally 4 Wiring Terminal...

Страница 10: ...Illustration 2 10 Illustration 1 ...

Страница 11: ...11 Illustration 4 Illustration 3 8 Menu navigation cont Internal Panel and Functions cover removed 8 Menu navigation cont External Panel and Functions SEL key can be operated externally ...

Страница 12: ...up steps Pressing the key for 3 seconds displays To return to measurement mode from each setting mode the dis play will flash when 3 seconds have passed The setting mode is used to select switch operation pressure unit indication scaling scal ing of analog output and filter time constant MODE Note Zero Adjustment select P1 and P2 respectively and then use Zero Adjustment will not function in DP mo...

Страница 13: ...13 ...

Страница 14: ... The message is displayed for 1 sec and then the current setting mode s decimal point posi tion is displayed Change the decimal point position value with the keys The pressure range min max value can be set in the same way using the and keys The pressure range min max display values are stored internally as operation coefficients When Display Scaling is selected these coefficients are used for sca...

Страница 15: ...ntage Change the numeric value with the keys The analog output span point s pressure can be set in the same way using the and keys Ex With Analog output of 1 to 5Vdc at pressure range of 0 to 100 psid 0 to 100 F S output is changed to 1 to 5Vdc at 0 to 90 psid Press at time of analog output zero point 0 0 F S 0 0 F S 1Vdc output with pressure range 0 F S Press at time of analog output span point 1...

Страница 16: ...he switch s output conditions are met their output state will become On and Switch LED OUT1 OUT2 will light up PLEASE NOTE that if the switch s setting value is set outside the display range the switch s setting value can be rewritten automati cally by the function setting mode operation ...

Страница 17: ...ue A as the upper limit The upper limit setting is determined when you select a positive number including 0 for setting value b setting the lower limit This is the mode in which the switch operates with the setting value A as the lower limit The lower limit setting is determined when you select a neg ative number for setting value b ...

Страница 18: ...Mode Regardless of applied pressure display and analog output can be tested manually using the keys useful for simulation testing of the analog output and switch output wiring After the switch setting press for 1 sec to change into Loop Check Mode The initial value will be the value displayed immediately before entering Loop check mode lop MODE ...

Страница 19: ...an 3 seconds until display blinks after releasing pressure from the pressure port Auto matic zero adjustment takes place approximately 1 second later for pressure display to be zero When the zero adjustment is successful is displayed Error displays for 1 second when applied presure was outside of range of 5 to 5 F S zero adjustment will not be allowed Adjusting the zero point of P Only when displa...

Страница 20: ...s the key Key Lock In measurement mode press the keys after the mes sage displays for 1 second indicating that the unit has entered into the key lock state All operations except Maximum Minimum hold dis play and display selections cannot be accessed The key lock mode can not be reset by turning the power OFF and ON It can be reset only by fol lowing the unlocking procedure Press the keys message d...

Страница 21: ...d during zero adjustment of P1 and P2 Open the unit to the atmosphere and adjust zero Adjusting zero point when psi is selected on P dis play selection Select this is what will show on your screen on P display selection and adjust zero point When in PSI mode zero adjustments can be done on P1 and P2 respectively but not DP Backup of setting Values The unit has an internal EEPROM to maintain settin...

Страница 22: ...ranty Except as otherwise provided the product warranty of this product is as follows Period 12 months after delivery Warrantable defects Defects resulting from the design and manufac ture of our company the quality of the material etc Implementation of warranty This warranty will be completed by sub stitution or repair of the product concerned We will not take responsibility for consequential dam...

Страница 23: ...23 ...

Страница 24: ...24 2011 Ashcroft Inc 250 East Main Street Stratford CT 06614 USA Tel 203 378 8281 Fax 203 385 0402 www ashcroft com All sales subject to standard terms and conditions of sale I M011 10158 Rev C 5 11 ...

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