• OPACITY MONITOR MANUAL IM-A-08740-05 • Revision Control Documentation Number and Revision Log This manual is UniControl Inc. document number IM-A-08740-05 dated February 1, 2022. Manual Revision Date IM-A-08740-05 12/27/2021 IM-A-08740-04 11/01/2011 Hardware Revision Number Electronics Unit LED light source P/N 31180 Light Source Assembly LED light source P/N 31181 Receiver Assembly...
• OPACITY MONITOR MANUAL IM-A-08740-05 • Safety Warnings Failure to comply in full with the following safety requirements can result in equipment damage and personal injury/death. Read the entire manual to become familiar with the use and operation of this device. Only qualified personnel should attempt to install, wire, commission, startup, service or operate this device.
SPDT contacts are provided for a remote alarm (which can be purchased separately: Cleveland Controls L-05500-00). The operator can select manual or automatic alarm reset. Modbus communications for interface with a SCADA system (Supervisory Control and Data Acquisition system) or other controls is standard.
• OPACITY MONITOR MANUAL IM-A-08740-05 • 1.2 Specifications Power requirements:120 V ac ± 10%, 50/60 Hz. Ambient temperature ranges: 32–130 ºF (0-54 ºC) for electronics unit. 32–160 ºF (0-70 ºC) for light source and receiver units. Fuse: One, @ 1 Amp. Measurement range: 0 to 100% opacity.
However, the Cleveland Controls P/N 20458 Series L-05500-00 Audible/Visual Alarm can be purchased separately. Also available separately, the Cleveland Controls P/N 31726 Purge Air Blower Kit is used in positive flue gas pressure applications.
• OPACITY MONITOR MANUAL IM-A-08740-05 • 2.0 INSTALLATION 2.1 Mounting Mount the electronics/display unit in a dry location where the ambient temperature is within the specified temperature range, 32-160 ºF (0-70 ºC). • Mount the unit away from excessive vibration. •...
• OPACITY MONITOR MANUAL IM-A-08740-05 • 2.2 Wiring The following information on wiring is generally applicable to all models. Refer also to the wiring diagrams in this manual (Figure 6 - Figure 9). Field wiring consists of 120 V ac control wiring, dc signal wiring, and Modbus wiring.
• OPACITY MONITOR MANUAL IM-A-08740-05 • 3.0 Operation & Maintenance 3.1 Displays and Indicators 3.1.1 Continuous Display Screen When power is applied to the unit, the continuous display screen lights. It provides a continuous display of particulate density from 000% Opacity (no particulates detected) to 100% Opacity (particulates are dense enough to block all light), in 1% increments.
• OPACITY MONITOR MANUAL IM-A-08740-05 • 3.3 Calibration on Continuous Display Screen For a summary of the calibration information below, refer to Figures 10 through 13. 3.3.1 AUTO CALIBRATION MODE To calibrate the LED light source and receiver units, press the “Enter” button until the “Enter Cal Menu?” message appears.
• OPACITY MONITOR MANUAL IM-A-08740-05 • 4.0 Miscellaneous 4.1 Retransmission of Process Variable Refer to the overall wiring diagrams (Figures 6-9). The terminals for the retransmission of the process variable are located on the printed circuit board. They are marked “4-20 ma.” 4.2 Modbus Communications Refer to the overall wiring diagrams (Figures 6-9).
(address above in Paragraph 5.1) 5.3 Service A Maintenance and Service Contract can ensure trouble-free, economical operation of Cleveland Controls equipment for many years. One-time on site service by a factory-trained service engineer can also be provided as needed. Contact...
• OPACITY MONITOR MANUAL IM-A-08740-05 • 5.4 Standard Terms and Conditions of Sale TERMS OF SALE: 1% discount if paid in ten (10) days, net amount due and payable in thirty (30) days. AGREEMENT OF SALE: Acceptance by Seller of any order placed for goods whether submitted on Buyer’s purchase order form or on seller’s Sales Order Acknowledgment form, shall be subject to Seller’s Standard Terms and Conditions of Sale and is conditioned upon the Buyer’s acceptance of these Standard Terms and Conditions.
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• OPACITY MONITOR MANUAL IM-A-08740-05 • Figure 3: Mounting the Breeching Units (A-08740 Universal Opacity Monitor).
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• OPACITY MONITOR MANUAL IM-A-08740-05 • Figure 4: Typical Air Supply Arrangement for Sight Glass Purge...
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• OPACITY MONITOR MANUAL IM-A-08740-05 • Figure 5: Typical Air Supply Arrangement for Sight Glass Purge with Blower (P/N 31726).
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• OPACITY MONITOR MANUAL IM-A-08740-05 • *Note: Relay is failsafe: on power up, the relay is energized. The contacts change state from NO to NC and NC to NO. • The LED light source and receiver operate at less than 24 V dc. LED light source wiring: two 14 AWG stranded wires. Light receiver wiring: one shielded 16 AWG pair.
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• OPACITY MONITOR MANUAL IM-A-08740-05 • Figure 7: Field Wiring for Universal Opacity Monitor Equipped with NYC Burner Cutoff Module.
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• OPACITY MONITOR MANUAL IM-A-08740-05 • Figure 8: Field Wiring for Universal Opacity Monitor Equipped with Overfire Air Timer Module for Stoker Applications.
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• OPACITY MONITOR MANUAL IM-A-08740-05 • Figure 9: Field Wiring for Universal Opacity Monitor Equipped with Purge Air Blower System.
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• OPACITY MONITOR MANUAL IM-A-08740-05 • Display Name Function Opacity Opacity Displays opacity level as 000-100%. Cal% Calibration Unit is in opacity calibration mode. Clear Clear Opacity is within permissible limits. Smoke Smoke Flashes when opacity has exceeded the trip point. Flashes when opacity has exceeded the trip point for longer than the delay Alarm Alarm...
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• OPACITY MONITOR MANUAL IM-A-08740-05 • Scrolling Display Screen: press “Enter” key to scroll through the following screens which display status messages and permit adjustment of parameters. Screen Function Adjustment Procedure Line 1: OPACITY = XXX% / Displays on Line 1 in operating mode when opacity is below CLEAR Default the alarm trip point.
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• OPACITY MONITOR MANUAL IM-A-08740-05 • Continuation of Scrolling Display Screen for Opacity Models A-08740-A0-0X Screen Function Adjustment Procedure Modbus Adjust while the unit is powered. Press “Inc” or “Dec” key Displays the modbus address. Addr to adjust the setting. Set from 001 to 247. Adjust while the unit is powered.
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• OPACITY MONITOR MANUAL IM-A-08740-05 • Continuation of Scrolling Display Screen for Opacity Models A-08740-A0-0X Screen Function Adjustment Procedure Prompts user to begin Press “Enter” to return to default screen. To proceed with Calibrate calibration of the 4-20 ma DC calibration, connect a 4-20 ma meter to the retransmit Retrans? retransmitted output or return...
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• OPACITY MONITOR MANUAL IM-A-08740-05 • Figure 12a: Scrolling Display Screens for Standard Models A-08740-A0-1X (1a through 5)
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• OPACITY MONITOR MANUAL IM-A-08740-05 • Continuation of Scrolling Display Screen for Opacity Models A-08740-1X Screen Function Adjustment Procedure Adjust while the unit is powered. Press “Inc” or Modbus Addr Displays the modbus address. “Dec” key to adjust the setting. Set from 001 to 247.
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• OPACITY MONITOR MANUAL IM-A-08740-05 • Continuation of Scrolling Display Screen for Opacity Models A-08740-1X Screen Function Adjustment Procedure Prompts user to begin Press “Enter” to return to default screen. To proceed Calibrate calibration of the 4-20 ma DC with calibration, connect a 4-20 ma meter to the Retrans? retransmitted output or return retransmit terminals.
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• OPACITY MONITOR MANUAL IM-A-08740-05 • Scrolling Display Screen: press “”Enter”” key to scroll through the following screens which display status messages and permit adjustment of parameters. Screen Function Adjustment Procedure Line 1: OPACITY = XXX% / Displays on Line 1 in operating mode when opacity is below CLEAR Default the alarm trip point.
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• OPACITY MONITOR MANUAL IM-A-08740-05 • Continuation of Scrolling Display Screen for Opacity Monitor Models A-08740-2X Screen Function Adjustment Procedure Modbus Adjust while the unit is powered. Press “Inc” or “Dec” key Displays the modbus address. Addr to adjust the setting. Set from 001 to 247. Adjust while the unit is powered.
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• OPACITY MONITOR MANUAL IM-A-08740-05 • Continuation of Scrolling Display Screen for Opacity Models A-08740-A0-2X Screen Function Adjustment Procedure Prompts user to begin Press “Enter” to return to default screen. To proceed Calibrate calibration of the 4-20 ma DC with calibration, connect a 4-20 ma meter to the Retrans? retransmitted output or return retransmit terminals.
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If it does not, contact Cleveland Controls. WATCH DOG TIMER RESET: AN ERROR HAS OCCURRED IN THE 0.05 SECOND MICROPROCESSOR. Turning the power off and then back on may clear up this fault. If it does not, contact Cleveland Controls. Figure 15: “Processor Running” LED...
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• OPACITY MONITOR MANUAL IM-A-08740-05 • Troubleshooting Component Symptom Possible Problem Main Pc. Board is faulty: replace. Alarm or Opacity section of the control unit is not operating properly. One of the alarm or opacity controls is faulty: %, Set 100%, Delay, or Trip Point Control. Control Unit 4-20 ma field wiring is faulty.
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