Related Manuals for Bacharach GDC-350
Summary of Contents for Bacharach GDC-350
- Page 1 Instruction 5909-9000 Operation Manual Rev. 1 - January 2012 Product Leadership x Training x Service x Reliability...
- Page 2 Website: www.MyBacharach.com In no event will Bacharach, Inc., or its officers or employees be liable for any direct, special, incidental, or consequential damages resulting from any defect in any manual, even if advised of the possibility of such damages.
- Page 3 GDC-350 Operation Manual IMPORTANT READ AND UNDERSTAND THIS MANUAL PRIOR TO USING THIS INSTRUMENT. THIS INSTRUMENT SHOULD BE INSPECTED AND CALIBRATED AT REGULAR INTERVALS BY QUALIFIED AND TRAINED PERSONNEL. FOR MORE INFORMATION REFER TO THE “SYSTEM MAINTENANCE” AND “CALIBRATION PROCEDURE” SECTIONS OF THIS MANUAL.
- Page 4 SHOULD YOUR INSTRUMENT REQUIRE NON-WARRANTY REPAIR, YOU MAY CONTACT THE DISTRIBUTOR FROM WHOM IT WAS PURCHASED OR YOU MAY CONTACT BACHARACH DIRECTLY. IF BACHARACH IS TO DO THE REPAIR WORK, SEND THE INSTRUMENT, PREPAID, TO BACHARACH, INC. AT THE FOLLOWING ADDRESS. BACHARACH, INC.
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Page 5: Table Of Contents
3.3. Remote Sensor Housing for Solid-State Sensors ..........9 3.4. Detailed Wiring Connections (Types A, B, and D) ..........9 3.5. Detailed Wiring Connections (Type E) ...............10 3.6. Wiring the GDC-350 for Power ................10 3.7. Wiring Remote Sensors (Voltage and Signal) ............12 3.8. Wiring Relay Connections ..................12 3.9. -
Page 7: Overview
All GDC-350 on-board sensors are packaged as plug-in “smart” sensor modules to reduce field maintenance time. 1.2. Key Exterior Components Figure 1-1. Standard GDC-350 Components NOTE: Photos of the GDC-350 in this manual may show the optional LED digital display and/or the optional splash guard. 5909-9000 Rev 1... -
Page 8: Key Interior Components
GDC-350 Operation Manual Figure 1-2. Water Tight GDC-350 Components 1.3. Key Interior Components Figure 1-3. Interior Components of the GDC-350 5909-9000 Rev 1... -
Page 9: Sensor Aging And Calibration Extending Firmware (Cef)
GDC-350 Operation Manual 1.4. Sensor Aging and Calibration Extending Firmware (CEF) GDC-350 systems with on-board electrochemical sensors have been programmed with our CEF (Calibration Extending Firmware). This firmware takes into consideration the aging of the electrochemical CO, NO and NO... - Page 10 GDC-350 Operation Manual Figure 2-1. Standard Enclosure Dimensions Figure 2-2. Water-Tight Enclosure Dimensions 5909-9000 Rev 1...
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Page 11: Sensor Specifications
R11, R12, R22, R123, R134A, R404A, R407C, R410A, R422A, R422D, R438A, and R507 Analog transmitter 4-20 mA signal All integral electrochemical gas sensors are packaged as “Smart” sensor modules. Supports any 4-20 mA analog transmitter manufactured by Bacharach. 5909-9000 Rev 1... -
Page 12: Model Designations
GDC-350 Operation Manual 2.3. Model Designations 5909-9000 Rev 1... - Page 13 GDC-350 Operation Manual 5909-9000 Rev 1...
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Page 14: Installation
Propane Combustibles Methane On/near ceiling (within 12”) Hydrogen NOTE: Bacharach 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... -
Page 15: Remote Sensor Housing For Solid-State Sensors
GDC-350 Operation Manual 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 Types A, B, and D 5909-9000 Rev 1... -
Page 16: Detailed Wiring Connections (Type E)
GDC-350 Operation Manual 3.5. Detailed Wiring Connections (Type E) Figure 3-4. Wiring Connections for GDC-350 Type E 3.6. Wiring the GDC-350 for 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. - Page 17 GDC-350 Operation Manual Figure 3-5. Proper Wiring Examples (Continued) 5909-9000 Rev 1...
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Page 18: Wiring Remote Sensors (Voltage And Signal)
The maximum distance between the GDC-350 and the remote sensor is 500 feet. The remote solid-state sensor housing has a 3/4” conduit thread and nut to allow installation in any standard electrical junction box (to be supplied by the installer). -
Page 19: Installation Example 1: Type "A" With Enclosed Transformer
GDC-350 Operation Manual 3.9. Installation Example 1: Type “A” with Enclosed Transformer Figure 3-7. Sample Type “A” Installation 5909-9000 Rev 1... -
Page 20: Installation Example 2: 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. Observe polarity because the GDC-350 supplies DC power to the remote sensor. 5909-9000 Rev 1... -
Page 21: Installation Example 3: Type "D" With On-Board And Remote Sensors
GDC-350 Operation Manual 3.11. Installation Example 3: Type “D” with On-Board and Remote Sensors Figure 3-9. Sample Type “D” Installation 5909-9000 Rev 1... -
Page 22: Installation Example 4: Type "E" With Two On-Board Sensors
3.12. Installation Example 4: Type “E” with Two On-Board Sensors Figure 3-10. Sample Type “E” Installation 3.13. Powering On the GDC-350 Upon application of power, the green LED light indicator(s) will illuminate and the LED between CH-1 and CH-2 will be blinking but all alarms are disabled for 2 minutes for a system warm up period. -
Page 23: Test Functions
GDC-350 Operation Manual NOTE: Reference photo on page 1 for location of LEDs and test- buttons. In the event of a gas build up beyond the preset low alarm trip point, the “Sen-1” LED illuminates, the “Low” alarm level LED illuminates and the low alarm relay de- energizes activating anything controlled by it. -
Page 24: Dip Switch Settings
To abort this test, press the internal “UP” push-button or the exterior silence push- button and everything will reset to normal operating condition. If the GDC-350 is equipped with a digital display, it will indicate “test” during this test period. -
Page 25: System Jumpers
GDC-350 Operation Manual delay function for the audible alarm has timed out. If DIP switch 5 is in the “down” position, the audible alarm does not respond at all. The internal audible alarm normally activates with a steady tone when a “high” gas alarm condition exists. - Page 26 GDC-350 Operation Manual Functions Resting (J7 jumpers are disabled) Setting Span Gas Value (On-board Sensor) Perform Zero (Null) Calibration (On-board Sensor) Perform Span Calibration (On-board Sensor) Adjust Low Gas Alarm Ascending Value (On-board Sensor) Adjust High Gas Alarm Ascending Value (On-board Sensor)
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Page 27: Adjusting Alarm Setpoints
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 need to attach volt meter leads to the two test points (TP1 and TP2) located just below the high alarm relay (RLY2) on the main circuit board. - Page 28 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 is equal to the full measurement range of the sensor. For example, a CO sensor has a standard measurement range of 0-200 ppm—therefore, 4.0 VDC = 200 ppm.
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Page 29: Relay Time Delays
GDC-350 has been equipped with the LED digital display, read the values on the display as you change them to suit your application. If the GDC-350 does not have a digital display, you will need a volt meter. The voltage reference is 0-4 VDC. - Page 30 GDC-350 Operation Manual VOLT READING TIME DELAY VOLT READING TIME DELAY AT TEST POINTS IN MINUTES AT TEST POINTS IN MINUTES 0.58 V 0.02 V 0.60 V 0.04 V 0.62 V 0.06 V 0.64 V 0.08 V 0.66 V 0.10 V 0.68 V...
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Page 31: Temperature Display - Unit Of Measure
Audible alarm “ON time delay 4.7. Temperature Display – Unit of Measure The GDC-350 systems all have an on-board temperature chip from which information is used to temperature compensate certain sensors. This temperature chip can also be used as a second sensor in applications where the user requires both a gas measurement and a temperature measurement. -
Page 32: Led Digital Display
GDC-350 Operation Manual 4.9. LED Digital Display The GDC-350 system allows for a limited amount of customization of the optional LED digital display using jumpers J3, J4, and J5. The display can be switched completely off. The display brightness level can be adjusted to low or high for best visibility in your application. -
Page 33: Calibration
IMPORTANT: In applications where life safety is critical, equipment should be calibrated quarterly or on a more frequent basis. Bacharach is not responsible for setting safety practices and policies. Safe work procedures including calibration policies are best determined by company policy, industry standards, and local codes. -
Page 34: Calculating The Span Gas Value
If a controller is involved, the alarm set points should be indicated on a label on the front door of the enclosure. Calibration is achieved at the GDC-350 controller if the sensor is on board. If the sensor is remote (i.e., a GDC-150 analog transmitter) the calibration is achieved at the transmitter using the procedure indicated in its operation manual. -
Page 35: Calibrating The On-Board Sensor
0.0 VDC. The instrument will beep twice when the calibration begins. Leave the zero air flowing over the sensor until the GDC-350 beeps three times indicating the procedure is finished (1 minute). Move the jumpers from J6 and J7 back to their P1 resting positions and remove the zero air (or nitrogen). -
Page 36: Calibrating A Second On-Board Sensor
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). Move the jumpers from J6 and J7 back to their P1 resting positions and remove the span gas. - Page 37 0.0 VDC. The instrument will beep twice when the calibration begins. Leave the zero air flowing over the sensor until the GDC-350 beeps three times indicating the procedure is finished (1 minute). Move the jumpers from J6 and J7 back to their P1 resting positions and remove the zero air (or nitrogen).
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Page 38: Calibrating 4-20 Ma Signal For Incoming Analog Transmitter
5.7. Calibrating 4-20 mA Signal for Incoming Analog Transmitter To perform this function you will need an accurate current source able to generate 4.0 mA and 20.0 mA current signals, or a Bacharach GDC-150. USING A CURRENT SOURCE TO CALIBRATE THE NULL (ZERO) -
Page 39: System Maintenance
P2 and set the voltage at TP1 and TP2 for 0 VDC. If transmitter has been calibrated, TP1 and TP2 should be reading 0 VDC. At the GDC-350: Move the jumper from J6 to P3 and the jumper from J7 to P3. -
Page 40: Common Accessories, Options, And Replacement Parts
GDC-350 Operation Manual 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...
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