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EXTRACTIVE GAS DETECTOR
OPERAT ION MANUAL
Model PS-7
For Administrators
• Operate this unit only after reading and fully understanding the content of this manual.
• This Operation Manual was written for administrator use. Instructions for the basic
operations of this unit are provided separately in the standard Operation Manual. Refer
to the Operation Manual when necessary.
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Some of the settings on this unit (alarm settings, etc.) are password protected. This Operation Manual explains the following items: • Passwords • Changing settings 1 Passwords 1-1 Password-protected Settings • Span adjustment (Refer to 2-1 Span Adjustment) • 21vol% adjustment (Refer to 2-2 21Vol% Adjustment ) • The values of various settings (Refer to 2-3 Changing Setting Values) • The values of alarm settings (Refer to 2-4 Changing the Alarm Settings) 1-2 Releasing the Password
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2 Changing Settings 2-1 Span Adjustment Toxic gas sensor unit : CDS-7 Combustible gas sensor unit : CHS-7 (1) Set to maintenance mode (MNT1 or MNT2). TROUBLE lamp (yellow) blinks. The “__” indication and the concentration value of the detected gas blink alternately. MNT1 or MNT2 is displayed at the bottom of the LCD screen. Left: Maintenance 1 (MNT1) Center: Normal mode Right: Maintenance 2 (MNT2) Pull back to open (2) Release the password lock. (Refer
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2-2 21Vol% Adjustment Oxygen sensor unit: COS-7 (1) Set to maintenance mode (MNT1 or MNT2). TROUBLE lamp(yellow）blinks. The “__” indication and the concentration value of the Oxygen blink alternately. MNT1 or MNT2 is displayed at the bottom of the LCD screen. Left: Maintenance 1 (MNT1) Center: Normal mode Right: Maintenance 2 (MNT2) Pull back to open (2) Release the password lock. (Refer to 1-2 Releasing the Password Lock.) (3) Press the SPAN switch.
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2-3 Changing Setting Values Some of the setting values of the unit can be changed. Those that can be changed are listed in the table below. The method for changing them is explained here. (1) Release the password lock. (Refer to 1-2 Releasing the Password Lock.) (2) Press the UP/DOWN switch (“ ” or “ ”) until the setting you wish to change ( “LCD Screen Indication” in the table below ) is displayed at the bottom right of UP/DOWN switch the LCD display. Setting to be chang
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Each time the UP switch is pressed, it will move down the table to the next item. When the DOWN switch is pressed, it will move up one. (4) Change the value by using the UP/DOWN switches (“ ” or “ ”). When you are done, press the special command switch again, and the alternating display in the bottom right corner of the LCD display will become constant. The process is now finished. Default value LCD Toxic: The function Adjustable Screen Remarks CDS-7 Oxygen: to be set Range Indi
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2-4 Changing the Alarm Settings The values of alarm settings on this unit can be changed. The method for changing them is explained here. (1) Release the password lock. (Refer to 1-2 Releasing the Password Lock.) (2) Press the AL switch until the alarm setting to be changed is displayed on the LCD display. (The bottom right of the screen, as in the table below.) The alarm setting for the actual gas concentration is displayed in the middle of the screen, and the Gas concentration
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st nd H – H mode (1 level: Upper limit, 2 level: Upper limit) Full Scale nd 2 level gas alarm : ALARM 1 , ALARM 2 is displayed. Alarm contacts ZA1 and ZA2 are activated Alarm value is set by entering A2 ** st 1 level gas alarm : ALARM 1 is displayed. Alarm contact ZA1 is activated Alarm value is set by entering A1 ** 0ppm Normal state (No gas is detected) st nd L – L mode (1 level: Lower limit, 2 level: Lower limit) 25vol% 21vol%
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Manual Revision History Edition No. Date Revisions GAE-019 July 2004 Additional copies of this Operation Manual are available. Contact the following address for ordering information. Manufacturer: New Cosmos Electric Co., Ltd. 2-5-4 Mitsuya-naka Yodogawa-ku Osaka 532-0036, Japan Phone 81-6-6309-1505 Fax 81-6-6309-1514 Distributor: DOD Technologies, Inc 740 McArdle Drive Unit C Crystal Lake, IL 60014 Phone 815-788-5200 Fax 815-788-5200 www.dodtec.
