Bacharach GDC-350 Operation Manual

Contents

Bacharach GDC-350 Operation Manual Manual pdf 9 page image

GDC-350 Operation Manual5909-9000 Rev 1 31.4. Sensor Aging and Calibration Extending Firmware (CEF)GDC-350 systems with on-board electrochemical sensors have been programmedwith our CEF (Calibration Extending Firmware). This firmware takes intoconsideration the aging of the electrochemical CO, NO and NO 2 sensors so that lessfrequent calibrations are acceptable in non-critical applications such as parkinggarages. The system tracks the age of the sensor and automatically compensates forthe degraded output of the sensor as it ages.2. SPECIFICATIONS2.1. Controller SpecificationsCategories/Subcategories DescriptionsEnclosureType Standard (NEMA 1X) Water Tight (NEMA 4X)DimensionsH x W x D5.25 x 6.75 x 2.63 (in)133 x 172 x 67 (mm)5.13 x 7.13 x 4.00 (in)130 x 181 x 102 (mm)Weight 1.2 lbs (0.6 kg) 1.4 lbs (0.7 kg)ConstructionPolycarbonate withhinged, secured door(drip resistant)Polycarbonate withhinged, secured door(water tight)WiringPower 24 V (nominal), DC or AC (50/60 Hz)RemoteSensor500’ maximum distance between controller andremote sensor using minimum 18 gauge wireUserInterfaceDisplayCommon set of LED indicators (4) for:Power, Fail, Low (Warning) Gas Alarm,High Gas AlarmSensor indicators (2) for:Sensor 1, Sensor 24-digit 8-segment LED digital display (optional)Audio Integral alarm rated 80 dB @ 10’Buttons Push-button to silence audible alarmRelays Two DPDT dry-contact relays (rated 5 A @ 240 VAC) 1ControlSettings 2Relays(DIP Switch)Low Gas Alarm “On” Delay (on “make”) 5 minLow Gas Alarm “Off” Delay 3High Gas Alarm “On” Delay (on “make”) 5 min(on “break”) 10 minAudio Audible Alarm “On” Delay (on “make”) 5 minAudible Alarm Feature (on/off)Environ-mentalTemperature 0° to 40° C (32° to 104° F)Humidity 0 to 95% RH non-condensing1 System is configured such that all relays are “FAIL SAFE” (relay coils are alwaysenergized in non-alarm state). Relays are “common” to both channels (activated byeither channel).2 May be set by user3 Also known as “minimum run time”