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RKI Instruments 61-0191RK, Operator'S Manual, Page: 11 / 13

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RKI Instruments 61-0191RK Operator'S Manual Download Page 11

 

61-1004RK/61-0191RK Combustible Gas Detector • 11

4.

Disconnect the detector leads from the terminal block inside the junction box. Note 
the position of the color-coded leads as you remove them.

5.

Unscrew the detector from the junction box.

6.

Guide the detector leads of the replacement detector through the bottom conduit hub 
of the junction box, then screw the mounting threads of the detector into the conduit 
hub.

7.

Connect the detector leads to the terminal block in the same position as the leads you 
removed in step 4.

8.

Secure the junction box cover to the junction box.

9.

Turn on power to the controller.

10. Turn on the controller.

11. Calibrate the replacement detector as described in“Calibration” on page 11.

Calibration Frequency

Although there is no particular calibration frequency that is correct for all applications, a 
calibration frequency of every 6 months is adequate for most infrared CO

2

 detector 

applications. Unless experience in a particular application dictates otherwise, RKI 
Instruments, Inc. recommends a calibration frequency of every 6 months for the infrared 
CO

2

 detector. 

If an application is not very demanding, for example detection in a clean, temperature 
controlled environment where CO

2

 is not normally present, and calibration adjustments 

are minimal at calibration, then a calibration frequency of every 9 to 12 months is 
adequate. 

If an application is very demanding, for example if the environment is not well controlled, 
then more frequent calibration than every 6 months may be necessary.

Calibration

This section describes how to calibrate the CO

2

 detector. It includes procedures to 

assemble the calibration kit, set the zero reading, set the response reading and return to 
normal operation.

WARNING: The controller is not an active gas monitoring device during the calibration 

procedure.

The following procedure assumes the use of a calibration kit which includes a 100% 
nitrogen calibration gas cylinder for setting the zero, a CO

2

 calibration gas cylinder for 

setting the response reading, a 0.5 LPM fixed flow regulator with an on/off knob, a 
calibration cup for the detector, and a short piece of sample tubing to connect the 
regulator to the calibration cup.

Assembling the Calibration Kit

1.

Screw the calibration cup onto the detector.

2.

Use the sample tubing to connect the regulator to the calibration cup.

3.

Place the controller into its calibration program or disable external alarms.

Summary of Contents for 61-0191RK

Page 1: ...www rkiinstruments com 61 1004RK 61 0191RK CO2 Detector Operator s Manual Part Number 71 0145RK Revision P1 Released 7 10 07 ...

Page 2: ... replacement costs local 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 IMPLIED AND ALL OTHER OBLIGATIONS OR LIABILITIES ON THE PART OF RKI INSTRUMENTS INC INCLUDING BUT NOT LIMITED TO THE WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE I...

Page 3: ... the CO2 Detector 6 Wiring the CO2 Detector to a Controller 7 Startup Introducing Incoming Power 8 Confirming the Zero Reading 8 Maintenance 9 Preventive Maintenance 9 Troubleshooting 10 Replacing the CO2 Detector 10 Calibration Frequency 11 Calibration 11 Assembling the Calibration Kit 11 Setting the Zero Reading 12 Setting the Response Reading 12 Parts List 13 ...

Page 4: ... detector which does not include a junction box and is normally mounted in one of a controller s conduit hubs and factory wired to the controller If you are using a 61 0191RK CO2 detector disregard all references to the junction box and junction box terminal block Specifications Table 1 lists specifications for the CO2 detector Table 1 61 1004RK Specifications Detection Range With Junction Box 61 ...

Page 5: ...hort length of black shrink tubing is applied to the white wire of the 5 000 ppm detector near where the wire comes out of the nipple and a short length of green shrink tubing is applied to the white wire of the 5 detector The output of the CO2 detector mimics the output of RKI s standard catalytic LEL detectors For this reason the CO2 detector s wire colors are the same as RKI s catalytic LEL det...

Page 6: ...site where the detector is not likely to be bumped or disturbed Make sure there is sufficient room to perform start up maintenance and calibration procedures Select a site where the target gas is likely to be found first Select a site that minimizes the possibility of someone breathing on the detector The exhaled CO2 may cause an alarm Figure 1 Mounting the CO2 Detector 2 At the mounting site you ...

Page 7: ...pposite the detector leads CAUTION Leave the shield drain wire insulated and disconnected at the 61 1004RK You will connect the opposite end of the cable s drain wire at the controller 5 Secure the junction box cover to the junction box 6 Route the cable or wires in conduit leading from the detector through one of the conduit hubs at the controller CAUTION Do not route power and detector wiring th...

Page 8: ...alibration cylinder of 100 nitrogen sample tubing and a 0 5 LPM liters per minute fixed flow regulator with an on off knob 1 Screw the calibration cup onto the bottom of the CO2 detector 2 Screw the regulator into the 100 nitrogen calibration cylinder 3 Use the sample tubing to connect the regulator to the calibration cup 4 Turn the regulator s on off knob counterclockwise to open it Gas will begi...

Page 9: ...e detector using a calibration kit that includes a calibration cup a CO2 calibration gas cylinder sample tubing and a 0 5 LPM liters per minute fixed flow regulator with an on off knob 1 Place the controller into its calibration program or disable external alarms 2 Verify that the controller display reading is around 200 ppm to 400 ppm 0 02 to 0 04 CO2 If the reading is significantly out of this r...

Page 10: ...oller indicates a fail condition The detector wiring is disconnected or misconnected The detector zero signal is low enough to cause a fail condition The detector is malfunctioning 1 Verify that the detector wiring is correct and secure 2 Calibrate the detector 3 If the fail condition continues replace the detector 4 If the fail condition continues contact RKI for further instruction Slow or No Re...

Page 11: ...tion is not very demanding for example detection in a clean temperature controlled environment where CO2 is not normally present and calibration adjustments are minimal at calibration then a calibration frequency of every 9 to 12 months is adequate If an application is very demanding for example if the environment is not well controlled then more frequent calibration than every 6 months may be nec...

Page 12: ...operator s manual for setting the response reading span 2 When the directions call for exposing the detector to calibration gas screw the CO2 cylinder onto the regulator turn the on off knob counterclockwise to open the regulator and allow the gas to flow to the detector for 1 minute before continuing with the directions 3 After setting the response reading turn the regulator s on off knob clockwi...

Page 13: ...tor 71 0145RK 61 1004RK 61 0191RK CO2 Detector Operator s Manual this document 81 0070RK 01 Calibration cylinder 2 000 ppm CO2 in nitrogen 34 liter 81 0072RK 01 Calibration cylinder 2 5 CO2 in nitrogen 34 liter 81 0078RK 01 100 nitrogen calibration cylinder 34 liter 81 1050RK Regulator 0 5 liter minute with gauge and knob for 17 and 34 liter calibration cylinders 81 1103RK Calibration cup 81 F403R...

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