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GDC-350 Operation Manual

5909-9000

Rev

7. COMMON ACCESSORIES, OPTIONS, AND REPLACEMENT PARTS

Part Number

Description

5909-0001

LED digital display (must be selected when ordering)

5909-0002

Water/dust-tight enclosure (NEMA 4X)

5209-0004

Splash guard (NEMA 4X enclosures only)

5209-0006

Calibration adapter for all other sensors

5209-0016

Calibration adapter for catalytic sensors

5209-0017

Sample draw pump (24 VAC-powered)

5209-0018

Sample draw pump (24 VDC-powered)

5209-0021

Humidification Chamber (for calibration of solid-state sensors)

5909-0003

System guard (16 gauge galvanized metal)

5909-0004

Enclosed external transformer

World Headquarters

621 Hunt Valley Circle, New Kensington, Pennsylvania 15068

Phone: 724-334-5000 Toll Free: 1-800-736-4666 Fax: 724-334-5001

Website: www.MyBacharach.com E-mail: [email protected]

Summary of Contents for GDC-350

Page 1: ...Instruction 5909 9000 Operation Manual Rev 1 January 2012 Product Leadership x Training x Service x Reliability...

Page 2: ...chantability or fitness for purpose with respect to this manual All information contained in this manual is believed to be true and accurate at the time of printing However Bacharach reserves the righ...

Page 3: ...D FROM WARNINGS CAUTION More than one live circuit is associated with this device CAUTION Disconnect power before servicing Supply voltage is 24 V nominal DC or AC 50 60 Hz This product is certified f...

Page 4: ...INCLUDE YOUR RMA ADDRESS TELEPHONE NUMBER CONTACT NAME SHIPPING BILLING INFORMATION AND A DESCRIPTION OF THE DEFECT AS YOU PERCEIVE IT YOU WILL BE CONTACTED WITH A COST ESTIMATE FOR EXPECTED REPAIRS...

Page 5: ...3 3 10 Installation Example 2 Type B with Remote Solid State Sensor 14 3 11 Installation Example 3 Type D with On Board and Remote Sensors 15 3 12 Installation Example 4 Type E with Two On Board Senso...

Page 6: ......

Page 7: ...icate Power Fail Low Warning Gas Alarm and High Gas Alarm Also included are an integral audible alarm with door mounted silence push button audible time delay field settable relay time delays and two...

Page 8: ...GDC 350 Operation Manual 2 5909 9000 Rev 1 Figure 1 2 Water Tight GDC 350 Components 1 3 Key Interior Components Figure 1 3 Interior Components of the GDC 350...

Page 9: ...sistant Polycarbonate with hinged secured door water tight Wiring Power 24 V nominal DC or AC 50 60 Hz Remote Sensor 500 maximum distance between controller and remote sensor using minimum 18 gauge wi...

Page 10: ...GDC 350 Operation Manual 4 5909 9000 Rev 1 Figure 2 1 Standard Enclosure Dimensions Figure 2 2 Water Tight Enclosure Dimensions...

Page 11: ...to 40 C operating Repeatability 10 of set point Life Span 5 years in air under normal conditions Gases E g Propane C3H8 gasoline vapors methane CH4 non specific combustibles Solid state Refrigerants...

Page 12: ...GDC 350 Operation Manual 6 5909 9000 Rev 1 2 3 Model Designations...

Page 13: ...GDC 350 Operation Manual 5909 9000 Rev 1 7...

Page 14: ...ach considers 4 to 6 feet from the floor as the breathing zone when it applies to sensors installed for vehicle exhaust applications 3 2 Basic Enclosure There are two exterior mounting brackets one at...

Page 15: ...n Manual 5909 9000 Rev 1 9 3 3 Remote Sensor Housing for Solid State Sensors Figure 3 2 Remote Sensor Housing 3 4 Detailed Wiring Connections Types A B and D Figure 3 3 Wiring Connections for GDC 350...

Page 16: ...r Power Drill out one or more of the PVC conduit entry hole plugs located at bottom left or right or top left edge of system enclosure base If supplying VAC operational power pull two wires suitable f...

Page 17: ...GDC 350 Operation Manual 5909 9000 Rev 1 11 Figure 3 5 Proper Wiring Examples Continued...

Page 18: ...these voltages are not attained after installation the wrong gauge wire may have been used or the wiring run is too long The maximum distance between the GDC 350 and the remote sensor is 500 feet The...

Page 19: ...GDC 350 Operation Manual 5909 9000 Rev 1 13 3 9 Installation Example 1 Type A with Enclosed Transformer Figure 3 7 Sample Type A Installation...

Page 20: ...Type B with Remote Solid State Sensor Figure 3 8 Sample Type B Installation NOTE Wiring between a GDC 350 and the remote sensor indicated above should be 3 conductor 16 to 18 gauge shielded cable Obse...

Page 21: ...GDC 350 Operation Manual 5909 9000 Rev 1 15 3 11 Installation Example 3 Type D with On Board and Remote Sensors Figure 3 9 Sample Type D Installation...

Page 22: ...unit was last powered up and the state of the environment it is installed in After warm up only the green power LED illuminates indicating normal operation and the relays are energized indicating norm...

Page 23: ...e until the delay has timed out Once the high alarm relay has de energized it will re energize automatically once the gas alarm condition has dispatched The same procedure applies to the second channe...

Page 24: ...for Alarms DIP switches in the UP position are ON Fixed delay durations indicated above are factory default settings Time delay durations can be changed by user See page 23 On delays are enforced upon...

Page 25: ...board Fault conditions automatically override the ON OFF DIP switch 5 if it has been set to the DOWN position to turn off the audible alarm 4 4 System Jumpers There are two banks of jumpers located d...

Page 26: ...djust High Gas Alarm Descending Value On board Sensor P2 P8 Enable Disable Current Output P2 P9 Setting Span Gas Value Remote Sensor P3 P2 Perform Zero Null Calibration Remote Sensor P3 P3 Perform Spa...

Page 27: ...40 C 60 C Temperature F 75 F 90 F 100 F If the GDC 350 has been equipped with an LED digital display set values according to what is displayed If the GDC 350 does not have a digital display you will...

Page 28: ...er bank All new values will be written to the EEPROM Refer to the flowchart below Figure 4 4 Jumper Settings J6 and J7 Alarm settings for GDC 350 detectors are voltage settings The range of 0 4 0 VDC...

Page 29: ...C SO2 0 20 ppm 2 ppm 0 40 VDC 5 ppm 1 00 VDC Combustibles 0 50 LEL 20 LEL 1 60 VDC 40 LEL 3 20 VDC Refrigerant Gases R series 0 2000 ppm 500 ppm 1 00 VDC 1000 ppm 2 00 VDC 4 6 Relay Time Delays The GD...

Page 30: ...V 13 0 0 44 V 2 2 2 8 V 14 0 0 46 V 2 3 3 0 V 15 0 0 48 V 2 4 3 2 V 16 0 0 50 V 2 5 3 4 V 17 0 0 52 V 2 6 3 6 V 18 0 0 54 V 2 7 3 8 V 19 0 0 56 V 2 8 4 0 V 20 0 Move the jumper on the lower bank J6 fr...

Page 31: ...temperature in Celsius and the output between test points TP1 and TP2 is 4 0 V If the DOWN push button is pressed the temperature is displayed in Fahrenheit and the output between the test points is 0...

Page 32: ...pers J3 J4 and J5 FUNCTION JUMPER SETTING Switch digital display ON J3 Bridge P2 and P3 Switch digital display OFF J3 Bridge P1 and P2 Low brightness level J4 Bridge P1 and P2 High brightness level J4...

Page 33: ...should be flowed at 0 5 LPM Gases heavier than air NO2 etc should be flowed between 0 5 and 1 0 LPM Fixed flow regulators provide more accuracy Gases should be flowed over the sensor for at least 2 5...

Page 34: ...ation kit calibration accessories and or gases from any Bacharach authorized distributor 5 3 Calculating the Span Gas Value To achieve calibration the user must first tell the GDC 350 what concentrati...

Page 35: ...buttons achieve the calculated voltage on the volt meter 5 Move the jumpers from J6 and J7 back to their P1 resting positions CALIBRATING THE NULL ZERO Step Calibrating the Null Zero Procedure 1 Attac...

Page 36: ...The instrument will beep twice when the calibration begins Leave the span gas flowing over the sensor until the GDC 350 beeps three times indicating the procedure is finished 2 minutes 7 Move the jump...

Page 37: ...J6 and J7 back to their P1 resting positions and remove the zero air or nitrogen CALIBRATING THE SPAN Step Calibrating the Span Procedure 1 Attach a regulator to a cylinder of span gas 2 Insert the ca...

Page 38: ...ltage 6 The instrument will beep twice when the calibration begins The instrument beeps three times indicating the procedure is finished 2 minutes 7 Move the jumpers from J6 and J7 back to their P1 re...

Page 39: ...ARACH GDC 150 TO CALIBRATE THE SPAN Step Using a Bacharach GDC 150 to Calibrate the Span Procedure 1 At the GDC 150 With the transmitter still connected move the jumper to P2 and set voltage at TP1 an...

Page 40: ...ll other sensors 5209 0016 Calibration adapter for catalytic sensors 5209 0017 Sample draw pump 24 VAC powered 5209 0018 Sample draw pump 24 VDC powered 5209 0021 Humidification Chamber for calibratio...

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