RKI Instruments GD-K7D2 Operator'S Manual Download Page 1

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RKI Instruments, Inc. •

33248 Central Ave

. •

Union City

, CA 945

• (510) 441-5656

Model GD-K7D2 (24 VDC)

Sample Draw Detector

Operator’s Manual

Part Number: 71-0078RK

Revision: 0

Released: November 18, 2002

Summary of Contents for GD-K7D2

Page 1: ...RKI Instruments Inc 33248 Central Ave Union City CA 94587 510 441 5656 Model GD K7D2 24 VDC Sample Draw Detector Operator s Manual Part Number 71 0078RK Revision 0 Released November 18 2002...

Page 2: ...al repair costs transportation costs or contingent expenses incurred without our prior approval THIS WARRANTY IS EXPRESSLY IN LIEU OF ANY AND ALL OTHER WARRANTIES AND REPRESENTATIONS EXPRESSED OR IMPL...

Page 3: ...10 Connecting Sample Lines to the GD K7D2 11 Wiring the GD K7D2 13 Assembling the GD K7D2 15 Startup 15 Introducing Incoming Power 15 Setting the Zero Signal 15 Operation 16 Maintenance 17 Preventive...

Page 4: ...ories for the GD K7D2 Specifications Table 1 lists specifications for the 24 VDC version of the GD K7D2 Table 1 Specifications Target Gas Detector Range Refer to the RKI Instruments Inc List of Detect...

Page 5: ...e detection unit s main circuit board plugs into the socket on the installation bracket The socket is above the terminal strip Figure 1 Sections of the GD K7D2 A hydrophobic sample filter is also prov...

Page 6: ...nd lithium battery pack Figure 3 Detection Unit Component Location GAS DETECTOR MODEL GD K7D FLOW ADJ Flowmeter Flow light Flow rate potentiometer ID card holder Gas name card holder Thumbscrew TP1 TP...

Page 7: ...horizontal lines on the flowmeter mark the acceptable flow rate for the GD K7D2 Use the flow rate pot to keep the flowmeter ball between the two lines A flow sensor at the bottom of the flowmeter sens...

Page 8: ...e GD K7D2 The lithium battery pack maintains a bias voltage on the gas sensor when the GD K7D2 is not receiving incoming power such as during shipment or storage If the GD K7D2 is off power for an ext...

Page 9: ...r wiring to the GD K7D2 It is not installed when the GD K7D2 is used with a controller that has flow alarm circuitry and flow alarm terminals See Wiring the GD K7D2 to a Controller in the Installation...

Page 10: ...ily accessible for servicing Select a site where the GD K7D2 is not likely to be bumped or disturbed Make sure there is sufficient room to make wiring and sample line connections at the bottom of the...

Page 11: ...nd the open fittings are plugged with protective rubber plugs Remove the protective plugs from the gas in and gas out fittings 2 Install a short piece up to 20 cm long of 4 mm I D x 6 O D mm Teflon PT...

Page 12: ...ch end Push one end onto the sample tube 4 Connect another length of sample tubing to the other side of the sample filter and route it to the sampling area Be sure not to exceed the maximum sample tub...

Page 13: ...alarm terminals for connection to the GD K7D2 see Figure 8 below In this case a jumper is factory installed between the second and third terminals from the right and the fourth and seventh terminals f...

Page 14: ...ithout Flow Alarm Terminals Figure 9 Wiring the GD K7D2 to a Controller With Flow Alarm Terminals 6 Connect the ground terminal to a locally available earth ground DC24V FLOW ALARM 4 20 mA External Wi...

Page 15: ...the controller see Figure 9 turn on or plug in the incoming DC power to the GD K7D2 6 Place the GD K7D2 s power switch in the ON position 7 Verify that the flowmeter ball is between the two lines on t...

Page 16: ...the sample area and send the target gas reading to the controller via a 4 20 mA signal The flowmeter ball should be between the two red lines If the flowmeter ball is out of the red lines use the flow...

Page 17: ...into it s calibration program or disable external alarms before verification This procedure describes a test to verify that the GD K7D2 responds properly to the target gas Preparing for the response...

Page 18: ...t sample tubing from the regulator then remove the milliampmeter test clips from the output check pins 6 Reinstall the incoming Teflon sample tubing to the sample filter 7 Slide the cover over the det...

Page 19: ...to accurately set the zero or response reading during the calibration procedure The GD K7D2 requires frequent calibration NOTE Under normal circumstances the GD K7D2 requires calibration every 3 6 mon...

Page 20: ...ensor See the next section for instructions to change the battery pack In addition to keeping the sensor on bias during storage it must be kept upright If the GD K7D2 is stored it must be oriented so...

Page 21: ...connector at the bottom of the amplifier from the sensor by gently pulling the bottom of the amplifier away from the sensor 12 Install the amplifier onto the new sensor with the sensor connector and...

Page 22: ...ntroller and turn on the controller 16 If providing 24 VDC to the GD K7D2 from a source other than the controller turn on the power source 17 Place the ON OFF switch in the ON position 18 Verify that...

Page 23: ...from the GD K7D2 s sample filter 4 Connect the calibration kit sample tubing to the sample filter NOTE Do not connect the calibration kit sample tubing from the sample filter to the regulator at this...

Page 24: ...reading 4 Disconnect the calibration kit sample tubing from the sample filter 5 Disconnect the calibration kit sample tubing from the regulator then remove the milliampmeter test clips from the outpu...

Page 25: ...get gas when ordering 81 0076RK Zero air calibration cylinder 17 liter 81 0076RK 01 Zero air calibration cylinder 34 liter 81 0076RK 03 Zero air calibration cylinder 103 liter 81 1001RK Dispensing val...

Page 26: ...ransmitter 26 ES 23R NH3 Sensor ammonia ES K233 CL2 Sensor chlorine ES K233 F2 Sensor fluorine ES K233 HCL Sensor hydrogen chloride ES K233 HF Sensor hydrogen fluoride ES K233 O3 Sensor ozone Table 3...

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