ACD Advanced Calibration Designs, Inc. EC Cal Gas Generator Release III MANUFACTURED BY: Advanced Calibration Designs, Inc. 1775 S. Pantano Road, Suite 140 Tucson, Arizona 85710 U.S.A. Telephone: (520) 290-2855 Fax: (520) 290-2860 Web Site: www.GoACD.com E-mail: ACD@auptag.com Revision - 070101 INSTRUCTION MANUAL www.goacd.
WARNING: This instrument generates calibration gas for toxic gas detectors. The instruction manual should be read and understood prior to operation of the instrument. Failure to operate the instrument correctly can lead to improper calibrations. This instrument conforms to the protection requirements of the EC DIRECTIVE 89/336/ EEC on Electromagnetic Compatibility (EMC), in accordance with the provisions of Statutory Instrument 2372.
NOTES: TABLE OF CONTENTS I. General Description Page 2 II. Normal Operation, Diffusion Mode Page 5 III. Normal Operation, Sample Draw Mode Page 8 IV. Menu Options Page 9 V. LCD Warning Displays Page 10 VI. Accessory Items / Parts List Page 11 VII.
NOTES: I. GENERAL DESCRIPTION The EC Cal is a small battery-powered, portable electrochemical gas generator designed to calibrate toxic gas sensors. Fast warm-up time allows the instrument to be turned off between remotely located sensors saving battery life and avoiding generation of unwanted gas. A built-in mass flow sensor provides accurate flow control and the ability to measure externally provided sample draw flow rates.
Digital Display VII. The EC Cal has a liquid crystal display (LCD) located on the front of the instrument. This display is protected by a thin, clear plastic cover that is part of the front label and may be replaced if it becomes scratched or unclear. We warrant gas calibration equipment manufactured and sold by us to be free from defects in materials, workmanship and performance for a period of one year from date of shipment.
VI. Accessory Items The following items are available as accessories for the EC Cal: Optional items available for the EC Cal include: External Charcaol Filter An external charcoal filter may be used to scrub contaminated air and provide a clean baseline for “zeroing” sensors.
II. Normal Operation, Diffusion Mode To start the generator, press and hold the POWER switch, located in the middle left front of the instrument, until the display reads A. C. D., approximately three (3) seconds. Release the switch immediately thereafter. V. LCD Warning Displays The following warning displays will appear if abnormal operation is detected by the microprocessor: "Flow too low" / Flow too high" accompanied by an audible beep.
IV. Menu Options Foreign Language Option The menu options can be adjusted to read in German, French, or Spanish. To change the language, start the unit as you normally would. When the ACD screen appears, A. C. D. III Copyright 2000 press the SELECT button. This will bring up the following screen: When the air flow rate screen appears, Flow: 0.5 lpm SELECT to change you may adjust your flow rate by pressing the SELECT switch. If you do, you will enter the flow adjust screen. 0.2 to 1.0 lpm set . . .
At this point, the instrument will enter the stabilization period and the display will alternate between the following three screens: Flow: 0.5 1pm Standby: xxx sec Stabilizing ... Standby: xxx sec 20 ppm H2S Standby: xxx sec When the instrument has finished counting down to zero (0) seconds, it has reached 90% of its final output and will enter the gas generating mode.
