User manual FLUKE PPCK PLUS

[. . . ] PPCK+TM High Pressure Controller/Calibrator Operation and Maintenance Manual ©2001 DH Instruments, Inc. PPCK+TM Operation and Maintenance Manual High pressure liquids and gases are potentially hazardous. Energy stored in these liquids and gases can be released unexpectedly and with extreme force. High pressure systems should be assembled and operated only by personnel who have been instructed in proper safety practices. © 2000-2001 DH Instruments, Inc. No part of this document may be reproduced or transmitted in any form or by any means, electronic or mechanical, for any purpose, without the express written permission of DH Instruments, Inc. [. . . ] If there is an active password, the PPCK+ password entry screen will appear. The user must enter the user defined password or the factory secondary password to proceed any further: PPCK+ SNnnnn-xx Password: pppppp The first field <nnnn> is the serial number of the PPCK+, followed by a second field <xx> that represents the number of times that a secondary password has been used. The factory secondary password is available in case the user's password has been misplaced or forgotten. The factory secondary password is different for all PPCK+'s and changes each time it is used. 3. 4. 4. 7 ATM PURPOSE To view the value of atmospheric pressure as measured by the onboard barometer. The atmospheric pressure measurements made by the on-board barometer are used only for dynamic compensation of atmospheric pressure when using an absolute reference pressure transducer to make gauge pressure measurements (see Section 3. 4. 1, PRINCIPLE). The on-board barometer is a low accuracy sensor used only for measuring changes in atmospheric pressure over short periods of time (see Section 3. 4. 1, PRINCIPLE). PPCK+ measurement uncertainty does not depend on the absolute uncertainty of the on-board barometer. ©2001 DH Instruments, Inc. Page 66 PPCK+TM Operation and Maintenance Manual OPERATION To view the current reading of the on-board barometer press [SPECIAL] and select <4Internal>, <7Atm>. The display is in the pressure units of the current PPCK+ range. 3. 4. 4. 8 SCRSAV PURPOSE To adjust the PPCK+ screen saver function. PRINCIPLE PPCK+ has a screen saver function which causes the display to dim after a front panel key is not pressed for a certain amount of time. This function is factory set to activate after 10 minutes of inactivity but can be adjusted by the user. OPERATION To access the screen saver function press [SPECIAL] and select <4Internal>, <8ScrSav>. Setting screen saver time to zero eliminates the screen saver function so that the display will permanently remain at full brightness. 3. 4. 4. 9 LOG PURPOSE To view and/or clear the PPCK+ event log. PRINCIPLE PPCK+ records to a log each time one of the following events occurs: · · The RPT is overpressure. A memory fault occurs. OPERATION To view the event log press [SPECIAL] and select <4Internal>, <9Log>. Pressing [ENTER] steps through the logged events from the oldest to the most recent and ending with the option to clear the log, YES or NO. If NO events have been logged, <End of log> displays. Page 67 ©2001 DH Instruments, Inc. PPCK+TM Operation and Maintenance Manual NOTES ©2001 DH Instruments, Inc. Page 68 PPCK+TM Operation and Maintenance Manual 4. REMOTE OPERATION 4. 1 OVERVIEW Most of the PPCK+ front panel functions can also be executed by commands from a remote computer. The host computer can communicate to the PPCK+ using the PPCK+ COM1 RS232 port or the IEEE-488 port. Before writing code which makes use of PPCK+ remote commands, familiarize yourself with its operating principles by reading Sections 2 and 3 of this manual. 4. 2 INTERFACING Sending a program message to the PPCK+ will place it into remote mode. The remote indicator in the lower left hand corner of the PPCK+ front panel lights when the PPCK+ is in remote mode. The menus usually accessed from the front panel are locked out while in remote. The [ESCAPE] key returns the PPCK+ to local operation unless the "REMOTE" program message was sent to the unit, which locks out all keypad operation. 4. 2. 1 RS232 INTERFACE 4. 2. 1. 1 COM1 The PPCK+ COM1 RS232 interface is located on the back of the unit. [. . . ] The lower pressure range RPT in a dual RPT PPCK+ is referred to as the Lo RPT. RPTs are designated by a leading A or G (absolute or gauge) followed by four numbers indicating the maximum range of the RPT in psi (e. g. , A0100). 2. SPLT Stability Limit Self Purging Liquid Trap. An optional device to protect PPCK+ from liquid and particulate contamination returned from a DUT. Control mode in which the pressure is set near the target value and then shut OFF and allowed to evolve freely. [. . . ]