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Summary of Contents for RKI Instruments 65-2445 Series
- Page 1 65-2445-XX PPM Hydrogen Transmitter Operator’s Manual Part Number: 71-0609 Revision: 0 Released: 5/8/23 RKI Instruments, Inc. www.rkiinstruments.com...
- Page 2 WARNING Read and understand this instruction manual before operating instrument. Improper use of the gas monitor could result in bodily harm or death. Periodic calibration and maintenance of the gas monitor is essential for proper operation and correct readings. Please calibrate and maintain this instrument regularly! Frequency of calibration depends upon the type of use you have and the sensor types.
- Page 3 RKI Instruments, Inc. Any parts found defective within that period will be repaired or replaced, at our option, free of charge. Parts must be returned to RKI Instruments, Inc. for repair or replacement. This warranty does not apply to those items which by their nature are subject to deterioration or consumption in normal service, and which must be cleaned, repaired or replaced on a routine basis.
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Page 4: Table Of Contents
Table of Contents Overview ............5 Specifications . -
Page 5: Overview
Overview This manual describes the 65-2445-XX ppm hydrogen transmitter. This manual also describes how to install, start up, configure, maintain, and calibrate the transmitter when it is used with a gas monitoring controller. A parts list at the end of this manual lists replacement parts and accessories for the transmitter. -
Page 6: Description
Description This section describes the ppm hydrogen transmitter’s components. It is a 4 to 20 mA type detector head. It consists of the ppm hydrogen detector, amplifier, and junction box. Amplifier FI N E C OA R S E J-Box Reducing Bushing, Hydrogen Detector 3/4 NPT to 1/2 NPT... -
Page 7: Ppm Hydrogen Detector
PPM Hydrogen Detector The ppm hydrogen detector is a MOS type (metal oxide semiconductor) detector packaged in a 1/2 NPT nipple with a sintered metal flame arrestor on one end allowing ambient air to diffuse into the detector. The flame arrestor also contains any sparks which may occur within the detector. The 1/2 NPT mounting threads at the top of the detector allow you to mount it into the bottom conduit hub of the junction box. -
Page 8: Junction Box
Detector Terminal Strip The detector terminal strip is a three position plug-in style terminal strip located below the controller terminal strip. Use the detector terminal strip to connect the detector to the amplifier. NOTE: The detector is factory-wired to the detector terminal strip. See page 10 for all wiring procedures related to the transmitter. -
Page 9: Installation
Installation This section describes procedures to mount the ppm hydrogen transmitter in the monitoring environment and wire the transmitter to a controller. Mounting the PPM Hydrogen Transmitter 2.70 3/4 NPT Female 3.65 7.5 m ax Rubber Spacers, J Box 3/4 x 1/2 Reducing Bushing Hydrogen Detector... -
Page 10: Wiring The Ppm Hydrogen Transmitter
Wiring the PPM Hydrogen Transmitter WARNING: Always verify that the power to the controller is off before you make wiring connections. 1. Turn off power to the controller. 2. Place the controller’s power switch in the OFF position. 3. Remove the junction box cover. 4. - Page 11 11. Connect the wires to the applicable detector/transmitter terminal strip at the controller as shown in Figure 4. + 24 V DC 4 - 20 m A In (S ) - (DC G round) Controller Cable S hield Fi ne S pan F INE Black Detector W ires...
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Page 12: Startup
Start Up This section describes procedures to start up the ppm hydrogen transmitter and place the transmitter into normal operation. Introducing Incoming Power 1. Complete the installation procedures described earlier in this manual. 2. Verify that the power wiring to the controller is correct and secure. Refer to the controller operator’s manual. -
Page 13: Maintenance
Maintenance This section describes maintenance procedures. It includes preventive maintenance, troubleshooting, and component replacement procedures. Preventive Maintenance This section describes a preventive maintenance schedule to ensure the optimum performance of the ppm hydrogen transmitter. It includes daily and quarterly procedures. Daily Verify a display reading of 0 ppm at the controller. -
Page 14: Replacing Components Of The Ppm Hydrogen Transmitter
Table 2: Troubleshooting the ppm Hydrogen Transmitter (Continued) Condition Symptom(s) Probable Causes Recommended Action Slow or No • Unable to accurately • The calibration 1. Verify that the calibration Response/ set the span or cylinder is low, cylinder contains an adequate Difficult or linearizing response out-dated, or... - Page 15 8. Connect the detector leads to the detector terminal strip as shown in Table 3 below and Figure 4 on page 11 of this manual. Table 3: Reconnecting the PPM Detector to the Amplifier Detector Lead Detector Terminal Strip White Black 9.
- Page 16 7. Install the detector and controller terminal strips into their sockets on the new amplifier as shown in Figure 4 on page 11 of this manual. If controller leads or detector leads were removed during this procedure, refer to Tables 4 and 5 below. Table 4: Reconnecting the PPM Hydrogen Amplifier to the Controller Amplifier’s Controller Controller’s Transmitter...
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Page 17: Calibration Frequency
Although there is no particular calibration frequency that is correct for all ppm hydrogen transmitter applications, a calibration frequency of every 6 to 12 months is adequate for most applications. Unless experience in a particular application dictates otherwise, RKI Instruments, Inc. recommends a calibration frequency of every 6 months. -
Page 18: Preparing For Calibration
Materials • 0.5 LPM fixed flow regulator with an on/off knob • calibration cup • humidifier tube • calibration gas cylinder with a full-scale concentration in a balance of air • calibration gas cylinder with a half-scale concentration in a balance of air Detection Range Calibration Gas Concentrations 0 - 100 ppm H... -
Page 19: Setting The Span Reading
Setting the Span Reading If the transmitter has been recently installed, do not adjust the factory setting on the Fine, Coarse, or Linear pots until the transmitter has been on power for 4-6 weeks. If the transmitter's sensor has recently been replaced, a rough calibration may be performed at installation but another calibration must be performed 4-6 weeks later. -
Page 20: Returning To Normal Operation
Returning to Normal Operation 1. Remove the voltmeter leads from the amplifier test points. 2. Unscrew the calibration cup from the detector. NOTE: For convenience, leave the regulator and calibration cup connected by the humidifier tube. 3. Secure the junction box cover to the junction box. 4. -
Page 21: Parts List
Parts List Table 7 lists replacement parts and accessories for the ppm hydrogen transmitter. Table 7: Parts List Part Number Description 18-0400RK Junction box with cover 33-2002RK-01 24” humidifier tube w/ 3/16” tubing on ends, for calibration kit 57-1071-01 Amplifier (specify target gas and detection range) 61-0160RK PPM H detector, for all ranges... - Page 22 Table 7: Parts List Part Number Description 81-F072RK Calibration kit, includes regulator, humidifier tube, calibration cup, 103 liter 1,000 ppm H calibration cylinder, and 103 liter 2,000 ppm hydrogen calibration cylinder 81-F072RK-LV Calibration kit, includes regulator, humidifier tube, calibration cup, 34 liter 1,000 ppm steel calibration cylinder, and 34 liter 2,000 ppm H steel calibration cylinder 81-F073RK-LV...
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