Eclipse Detector Head Operator’s Manual Part Number: 71-0036RK Revision; 0 Released: 3/12/03 Eclipse Detector Head Operator’s Manual
Warranty RKI Instruments, Inc., warranties gas alarm equipment manufactured by RKI and sold by RKI to be free from defects in materials and workmanship for a period of one year from date of shipment from RKI Instruments, Inc. Any parts found defective within that period will be repaired or replaced, at our option, free of charge. This warranty does not apply to items that are subject to deterioration or consumption in normal service, and which must be cleaned, repaired, or replaced routinely.
About the Eclipse Detector Head The Eclipse Detector Head is a fixed mounted, continuous-monitoring detector head. All user adjustable parameters may be adjusted non-intrusively by use of an optical switch which is accessible through a window at the front face of the detector head. The Eclipse displays the current gas reading on an LCD display which is visible through the window in the cover (front face).
Description 3/4" Conduit Hub Ribbon Cable Connector (behind nameplate, cable not s hown) Ribbon Cable Connector Interconnect PCB LCD Display Sensor Terminal Strip Nameplate XXX Cl 2: Y el l ow S O2 : Oran ge CO : Red H2 S : Red ™ PATENT PENDING GRN WHT B LK E CLI P SE E C LI PS E ™ GAS MO N I TO R 2 4 VDC IN FB + - BLK G RN W HT RED X X X Control PCB Optical Switch Power/Signal Terminal Strip Junction Box Detector (Combustible s hown for ref)) View With Cover Removed View With Cover and Contr
detector terminal strip and power/signal terminal strip. A ribbon cable with a connector on each end connects the two PCB’s. Interconnect PCB The interconnect PCB is mounted into the rear of the junction box with two standoffs. A banana jack is screwed into each of the standoffs and used for mounting the control PCB. On the right side of the interconnect PCB is the detector terminal strip, a six position terminal strip. It is used to connect the detector to the Eclipse.
in the upper right of the display. If the Eclipse is installed in an area with no significant background light, use a portable lantern or flashlight to provide a steady background light level. Junction Box Use the junction box to install the Eclipse detector head at a mounting site. The junction box also protects the Eclipse and all connections made to it. Use the two 3/4 in. conduit hubs to mount the detector to the junction box (bottom hub) and connect wiring from an external device.
. 25 Mounting Holes (2X) 3/4 Conduit Hub 4.60 5.2 2.75 6.1 5.46 7.7 max 2.3 max 1.1 Figure 2: Outline & Mounting Dimensions, LEL Ø.25 Mounting H ole (2X) 3/4 Conduit Hub 4.60 5.2 2.75 6.1 5.46 8.3 max 2.85 max 1.
Ø .25 MOUNTING HOLES (2X) 3/4 CONDUIT ENTRY 4.60 5.2 2.75 6.1 5.46 8.0 max 2.6 max 1.1 Figure 4: Outline & Mounting Dimensions, Oxygen Wiring the Eclipse WARNING: Always verify that the power source is off or disconnected before performing any wiring. 1. Remove the junction box cover. 2. Grasp the round Eclipse nameplate though which the LCD display is visible. 3. Gently pull until the control PCB is pulled away from the junction box.
Black Green White Red XXX Cl2: SO2: CO: H2S: GRN Yellow Orange Red Red WHT BLK ECLIPSE GRN WHT BLK 24 VDC IN FB RED XXX - + Figure 6: LEL Detector Wiring • CO or H2S gas detector. Red wire to terminal labeled TOXIC RED, black wire to terminal labelled TOXIC BLK. Black Red XXX Cl2: Yellow SO2: Orange CO: Red H2S: Red GRN WHT BLK ECLIPSE GRN 2 4V D C IN FB + - WHT BLK RED XXX Figure 7: H2S/CO Detector Wiring • Oxygen Detector.
6. Guide a three-conductor, shielded cable or three wires in conduit through the top conduit hub of the junction box. 7. Connect the three wires to the power/signal terminal strip as follows. • Connect the +24 VDC wire to the terminal labeled 24 VDC IN +. • Connect the feedback wire to the terminal labeled FB. • Connect the - wire to the terminal labeled 24 VDC IN -. CAUTION: Leave the ground (shield) wire insulated and disconnected at the Eclipse.
Verify that the transmitter is in a fresh air environment (environment known to be free of the target gas and combustible or toxic gas vapors and of normal oxygen content, 20,9%). If a fresh air environment cannot be verified, see the calibration section for instructions on how to use a zero air cylinder. Leave the junction box cover on during this entire procedure. WARNING: The Eclipse is not an active gas monitoring device during the zero procedure.
NOTE: If there is no switch activity for 5 minutes while the screen indicates that the unit is ready for a span operation, the unit will return to normal operation. 3. 4. Adjust the reading to 20.9 if necessary. • If the reading is below 20.9, press and hold the optical switch to increase the reading. Initially the reading increases slowly. If a large adjustment is needed, continue to hold and after a few seconds the reading will increase at a faster rate. Release when the desired reading is reached.
green wire to terminal labelled LEL GRN, black wire to terminal labelled LEL BLK. • CO or H2S gas detector. Red wire to terminal labeled TOXIC RED, black wire to terminal labelled TOXIC XXX. • Oxygen gas detector. Green wire to terminal labelled OXY GRN, white wire to terminal labelled OXY WHT. CAUTION: Allow the replacement detector to warm up for 15 minutes before you continue with the next step. 10. Re-install the control PCB (and ribbon cable if necessary).
Calibration, Combustible and Toxic Versions This section describes how to calibrate the combustible gas and toxic gas versions of the Eclipse. It includes procedures to prepare for calibration, enter the Calibrate menu, set the zero reading, set the response reading, and return to normal operation. See the next section, Calibration, Oxygen Version, for instructions to calibrate an oxygen Eclipse. WARNING: The Eclipse is not an active gas monitoring device during the calibration procedure.
Setting the Zero Reading 1. Verify that the gas reading has stabilized. 2. Press and release the optical switch once. The Eclipse will perform a zero adjust which will take approximately 3 seconds and return to the ready screen. 3. Unscrew the regulator from the zero air calibration cylinder. Leave the sample tubing connected to the regulator and the calibration cup. Setting the Response Reading 1. Press and release the optical switch 3 times and then press and hold. 2.
Calibration, Oxygen Version This section describes how to calibrate the oxygen version of the Eclipse. It includes procedures to prepare for calibration, enter the Calibrate menu, set the zero reading, set the response reading, and return to normal operation. See the previous section, Calibration, Combustible and Toxic Versions, for instructions to calibrate a combustible gas or toxic gas Eclipse. WARNING: The Eclipse is not an active gas monitoring device during the calibration procedure.
Setting the Response Reading NOTE: The following procedure assumes that the oxygen content is not normal (20.9%). If a fresh air environment can be verified, applying zero air to the sensor is not necessary when adjusting the span setting. 1. Press and release the optical switch 3 times and then press and hold. 2. After approximately 5 seconds, the following will display: RELEASE to SPAN.
Parts List Table 6 lists replacement parts and accessories for the Eclipse Detector Head. Table 2: Parts List Part Number Description 06-1248RK Sample tubing (3/16 in. x 5/16 in.
