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Summary of Contents for Riken Keiki RI-215A
- Page 1 PT3E‐0064 Air Quality Monitor RI-215A Instruction Manual...
- Page 2 HIS WARRANTY IS EXPRESSLY IN LIEU OF ANY AND ALL OTHER WARRANTIES AND REPRESENTATIONS EXPRESSED OR IMPLIED AND ALL OTHER OBLIGATIONS RIKEN KEIKI., OR LIABILITIES ON THE PART OF INCLUDING BUT NOT LIMITED TO THE WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR RIKEN KEIKI.,...
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Page 3: Table Of Contents
Connecting the Power ....................... 13 Connecting the RI-215A to a Recorder ................13 Connecting the RI-215A to a Controller ................14 Connecting the RI-215A to an External Alarm Device ............14 Start Up ............................14 Introducing Power to the RI-215A ..................14 Warm Up ........................... - Page 4 Preparing for Calibration ..................... 22 Setting the Zero Reading ....................22 Setting the Response Reading ..................22 Returning to Normal Operation ................... 23 Parts List ............................23 Appendix A: Changing the Detection Range ............24 RI-215A 4 • Table of Contents Operator’s Manual ...
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Page 5: Chapter 1: Introduction
Chapter 1: Introduction Overview This chapter brie fly describes the RI‐215A. This chapter also describes the RI‐215A Operator’s Manual (this document). Table 1 at the end of this chapter lists the specifications for the RI‐215A. About the RI-215A The RI‐215A Air Quality Monitor detects the presence of CO (carbon dioxide) using an 2 infrared (IR) gas sensor. The RI‐215A shows increasing levels of CO on its liquid crystal 2 display (LCD). It also displays a visual alarm should levels of CO exceed the unit’s full 2 scale (e.g., 2,000 ppm). Alarm contacts on the RI‐215A are also provided, which enable you to connect an external alarm to the unit. Three ranges of gas detection are available for the RI‐215A: 0 ‐ 2,000 ppm, 0 ‐ 5,000 ppm, and 0 ‐ 9990 ppm. Detection ranges are set at the factory. When you ordered the RI‐215A, you should have specified one of these gas detection ranges for your unit. It becomes necessary to change the detection range, See “Appendix A: Changing the Detection Range” on page 24. The RI‐215A operates in three modes: Measuring Mode, Maintenance Mode, and Alarm Adjust Mode. Measuring Mode Measuring Mode is the mode in which the RI‐215A detects, measures, and displays CO 2 (normal operation). Maintenance Mode Maintenance Mode allows you to perform maintenance tasks. These tasks include: ... -
Page 6: Specifications
CAUTION: Describes potential damage to equipment. WARNING: Describes potential danger that can result in injury or death. Method of confirmation for CE marking type The CE marking is labeled on the detector in case of comply with CE marking. Please confirm the instrument specification before using. Please refer Declaration of Conformity that is at the end of this manual if you have CE marking type. You can confirm instrument specification to see the CE marking as follows. CE marking CE marking label(Back side of instrument) RI-215A 6 • Specifications Operator’s Manual ... -
Page 7: Chapter 2: Description
LCD Display Window Cable Connector Entry Slot Front View Mode Switch Back View Up/Alarm Switch Down Switch Set/Calibration Switch Cal Gas Inlet Rubber Cover Bottom View Figure 1: Component Location of the RI-215A RI-215A Operator’s Manual Overview • 7 ... -
Page 8: Cable Assembly
The printed circuit board converts the output of the IR gas sensor to a 4‐to‐20 mA signal (that is proportional to the detection range of the RI‐215A). The printed circuit board also displays a digital reading on the LCD. , Down ( The printed circuit board has four switches: Mode (M), Up / Alarm ( ), and Set / Calibration (S). These switches are located at the bottom of the printed circuit board beneath the gas sensor. Table 2 lists each switch and its function. Table 2: Model RI-215A Program Switches Switch Function Mode (M) Enters Maintenance Mode • Increases the setting on the LCD Up / Alarm ( ) • Displays the alarm point Down () -
Page 9: Lcd
The LCD is mounted to the printed circuit board. The LCD shows the current gas reading of the RI-215A’s target gas. The LCD also shows operational messages when the RI-215A exceeds its full scale. IR Gas Detector The IR detector uses infrared light and an infrared sensor to detect CO . -
Page 10: Chapter 3: Installation
Chapter 3: Installation Overview This chapter describes how to install the RI‐215A at the monitoring site. This section also includes procedures to make power and other wiring connections to the RI‐215A. Mounting the RI-215A CAUTION: The RI‐215A is suitable for installation in indoor areas where general purpose equipment is in use. 1. Select a mounting site that is representative of the monitoring environment. Consider the following when you select the mounting site: • Select a site near the sampling area in which the RI‐215A is not likely to be bumped or disturbed. • Choose a location not subject to significant air movement, for example, near an air conditioning or heating vent. • Mount the RI‐215A in an area not subject to large temperature and humidity changes. • Mount the RI‐215A on the wall at least six feet from the floor to minimize the possibility of someone breathing on the unit. The exhaled CO may cause an 2 alarm. • Make sure there is sufficient room to make wiring connections through the back of the unit, and to remove the unit from the base plate to perform maintenance, ... - Page 11 3. Use two screws to secure the base plate to the wall. Figure 2 below shows the location of the screw holes in the base plate. 3.08 1.23 3.08 Front View Right Side View 2.37 .17 Diameter Mounting Hole Location Back Side Figure 2: RI-215A Outline and Mounting Dimensions 4. Reassemble the base plate and the front housing of the RI‐215A in the reverse order as described in step 2 above. Line up the bottom of the base plate with the front housing, then carefully snap the base plate and front housing together. RI-215A Operator’s Manual Mounting the RI-215A • 11 ...
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Page 12: Wiring The Ri-215A
Wiring the RI-215A This section describes procedures to connect power to the RI-215A. This section also describes optional procedures to connect a controller or recorder and external alarm device to the RI-215A. WARNING: To reduce the risk of electric shock, always verify that power to the RI‐ 215A has been turned off before making any wiring connections to the RI‐ 215A. Make sure to operate the RI‐215A from the specified power voltage of 24VAC/VDC, and follow the local electric code when making all electrical connections. ... -
Page 13: Connecting The Power
Figure 4 below shows how to wire the RI-215A to a controller that accepts 3-wire, 4-20 mA transmitters. RI-215A Controller Terminals 1 (red) + 24 VDC 2 (red) - (DC Ground) 4 - 20 mA In (S or FB) -
Page 14: Connecting The Ri-215A To A Controller
Connecting the RI-215A to a Controller Perform the following procedure to connect the RI‐215A as a 3‐wire 4 ‐ 20 mA transmitter to a controller. 1. Verify that power to the RI‐215A has been turned OFF. 2. Connect one of the red wires from the RI‐215A to the +24V transmitter terminal at the controller. 3. Connect the other red wire to the ‐ (DC ground) transmitter terminal at the controller. 4. Connect the yellow wire to the S or FB transmitter terminal at the controller. Connecting the RI-215A to an External Alarm Device CAUTION: The maximum current rating of the normally‐open, dry contacts is 0.5 amp. If the alarm device exceeds this rating, use the alarm contacts to control a relay with an appropriate current rating. 1. Verify that power to the RI‐215A has been turned OFF. 2. Connect the white wires to the external alarm. Refer to the wiring diagram in Figure 3 on page 12. 3. If you do not connect the white wires to an alarm device, terminate these unused ... -
Page 15: Preparing To Set The Zero
1. Locate the function switches on the bottom of the unit. 2. Press and hold the MODE switch (M) for three seconds to enter Maintenance Mode. The display will show “1” to indicate Zero Adjustment Mode. 3. Press the SET switch (S) to enter Zero Adjustment Mode. The display will show a reading with a flashing decimal point before the first and third digits, for example “. 1.5“. 4. Remove the rubber cap covering the calibration gas inlet port at the bottom of the unit. 5. Insert the calibration tubing into the gas inlet opening at the bottom of the RI‐215A and push the tubing over the calibration fitting. 6. Screw a 100% nitrogen calibration cylinder (a CO ‐free source) into the regulator. 7. Allow the gas to flow for one minute or until the gas reading stabilizes. 8. Press the SET switch (S) and the unit will adjust the reading to zero. Be careful not to breath onto the RI‐215A since the CO in your breath may affect the reading. 2 9. Press the SET switch (S) and the display will again show a “1”. 10. Unscrew the regulator from the nitrogen cylinder. 11. To return to normal operation, press the MODE switch for three seconds to exit Maintenance Mode. RI-215A Operator’s Manual Start Up • 15 ... -
Page 16: Chapter 4: Operation
Measuring Mode When the RI‐215A is in Measuring Mode (normal operation), it displays the current concentration of CO on its LCD and outputs a 4 ‐ 20 mA signal that corresponds to the 2 concentration. The typical background CO level is 200 ‐ 400 ppm. 2 2 Alarm Indications If the CO concentration rises above the alarm point, the relay contact will actuate. If the 2 gas concentration exceeds the full scale, the LCD shows: Responding to Alarms 1. Follow your established procedure for handling high levels of CO gas. 2 2. When the display reading falls below the alarm point, the alarm circuit automatically resets itself. RI-215A 16 • Overview Operator’s Manual ... -
Page 17: Analog Output
4 mA (0V) 0 ppm Gas 2000 ppm Concentration 5000 ppm 9990 ppm Figure 5: Model RI-215A’s CO Level to Output Signal Should the concentration of CO present in the monitoring environment be above full 2 scale (i.e., it exceeds the upper gas range of your unit), the highest output will be 22 mA, or 11 V, depending on the output, current, or voltage, selected at the factory. The LCD of the RI‐215A will show a series of brackets (upside down “Us”) between 20 mA (10 V) and 22 mA (11V). The standard output setting for the RI‐215A is 4‐ 20 mA. Alarm Point and Ventilation Control The RI‐215A’s alarm relay has a built‐in hysteresis of 50 ppm (refer to Figure 6 on page 18). After the alarm point has been reached (e.g., 1000 ppm), the alarm relay will activate. As the CO concentration begins to fall, the alarm relay will deactivate 50 ppm ... -
Page 18: Alarm Adjust Mode
950 ppm 2 Closed Open Open Relay contact Figure 6: Model RI-215A’s Built-in Hysteresis of 50 ppm Alarm Adjust Mode ) Use the Up ( switch to enter Alarm Adjust Mode. Verifying the Alarm Point Three ranges of gas detection are available for the RI‐215A: 0 ‐ 2,000 ppm, 0 ‐ 5,000 ppm, and 0 ‐ 9990 ppm. Detection ranges are set at the factory. When you ordered the RI‐215A, you should have specified one of these gas detection ranges for your unit. The alarm point of the RI‐215A is also set at the factory (e.g., 1000 ppm). To display the current alarm point from the normal LCD, do the following: ) 1. Press and hold the Up ( switch. The alarm point appears (e.g., 10:00) on the LCD ... - Page 19 Adjusting the Alarm Point To adjust the alarm point, do the following: ) 1. Press and hold the Up ( switch for three seconds to display the Alarm Adjust screen. The LCD will flash the alarm point setting and the colon (:) alternately. ) ) 2. Use the Up ( and Down ( switches to adjust the alarm point to the setting you want (e.g., 11:00 = 1100 ppm, 12:00 = 1200ppm, 12:30 = 1230ppm, 13:00 = 1300 ppm, etc.) 3. Press the SET switch to save the new alarm point. The unit returns to normal operation and the LCD displays the current gas reading. RI-215A Operator’s Manual Alarm Adjust Mode • 19 ...
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Page 20: Chapter 5: Maintenance
Quarterly Calibrate the unit. See “Calibration” on page 22. Troubleshooting The troubleshooting table describes error messages, symptoms, probable causes, and recommended action for problems you may encounter with the RI-215A. Table 3: Troubleshooting the RI-215A Symptoms Probable Causes Recommended Action • The LCD does not show •... -
Page 21: Replacing Components
Table 3: Troubleshooting the RI-215A Symptoms Probable Causes Recommended Action • The LCD shows • The RI-215A may 1. Recalibrate the unit. abnormally high or low need to be readings but other recalibrated. gas detection instru- ments show a normal level of CO •... -
Page 22: Calibration
7. Allow the gas to flow for one minute or until the gas reading stabilizes. 8. Press the SET switch (S) and the unit will adjust the reading to zero. Be careful not to breath onto the RI‐215A since the CO in your breath may affect the reading. 2 9. Press the SET switch (S) and the display will again show a “1”. 10. Unscrew the regulator from the nitrogen cylinder. ) 11. To proceed with setting the span, press the Up ( switch to display “2” which indicates Span Adjustment Mode and continue with the next section, Setting the Response Reading. 12. To return to normal operation, skip to Returning to Normal Operation below. Setting the Response Reading 1. With “2” showing in the display, press the SET switch (S) to enter Span Adjustment Mode. The display will show the current gas reading with a flashing decimal point before the second and third digits, for example “.6.50“. 2. Press the SET switch (S) again and the reading will start to flash. RI-215A 22 • Calibration Operator’s Manual ... -
Page 23: Returning To Normal Operation
NOTE: If you do not allow the gas reading to return to normal, then unwanted alarms may occur. 2. Store the components of the calibration kit in a safe and convenient place. Parts List Table 4 lists replacement parts and accessories for the RI‐215A carbon dioxide transmitter. Table 4: Parts List Part Number Description 1836‐9641‐40 Sample tubing (1 / 4 x 1 / 8 in.; specify length when ordering) 2560‐0518‐20 Replacement fuse, 0. 5A, 250 V, 5 mm x 20 mm RI-215A Operator’s Manual Parts List • 23 ... -
Page 24: Appendix A: Changing The Detection Range
) 3. Press the Up ( switch until the display shows “3” to indicate Full Scale Adjustment Mode. 4. Press the SET switch (S) to enter Full Scale Adjustment Mode. The display will show a full scale value with a flashing decimal point after the first digit, for example “2.000“. ) ) 5. Use the Up ( and Down ( switches to scroll through the full scale value choices until the desired full scale value is displayed. 6. Press the SET switch (S) to accept the displayed full scale value. The display will again show a “3”. 7. Press the MODE switch for 3 seconds to exit Maintenance Mode and return to Measuring Mode. 8. Calibrate the RI‐215A as described in ʺCalibrationʺ on page 22. WARNING: The RI‐215 must be calibrated after the detection range is changed. The RI‐215A readings will not be accurate unless a calibration is performed. RI-215A 24 • Parts List Operator’s Manual ... - Page 25 ...
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