SC-01 Operator’s Manual Part Number: 71-0136RK Revision: B Released: 10/20/11 www.rkiinstruments.
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.
Warranty RKI Instruments, Inc. warrants the SC-01 Single Gas Monitor sold by us to be free from defects in materials, workmanship, and performance for a period of one(1) year from the date of shipment from RKI Instruments, Inc. This includes the instrument and the original sensor. Replacement parts are warranted for one (1) year from the date of their shipment from RKI Instruments, Inc. Any parts found defective within their warranty period will be repaired or replaced, at our option, free of charge.
Table of Contents Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Protective Rubber Boot . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 Replacing the Batteries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 Replacing the Sensor . . . .
Introduction Using an advanced microprocessor controlled detection system, the SC-01 Personal Single Gas Monitor detects the presence of one of a variety of toxic gases depending on the sensor installed. The SC-01 has the ability to recognize which sensor is installed so that changing the target gas is as easy as changing the sensor to a different type calibrated sensor.
Specifications Table 1: 01 Series Specifications Available Target Gas/ Detection Range/ Display Increment • • • • • • • • Ammonia (NH3): 0 - 75.0 ppm, 0.5 ppm increments Arsine (AsH3): 0 - 1.50 ppm, 0.01 increments Carbon Monoxide (CO): 0 - 75.0 ppm, 0.5 ppm increments Chlorine (Cl2): 0 - 3.00 ppm, 0.02 ppm increments Hydrogen Cyanide (HCN): 0 - 15.0 ppm, 0.1 increments Hydrogen Sulfide (H2S): 0 - 30.0 ppm, 0.2 ppm increments Phosphine (PH3): 0 - 1.00 ppm, 0.01 ppm increments Sulphur Dioxide (SO2): 0 - 6.
Table 1: 01 Series Specifications Operating Temp.
Description This section describes the components of the SC-01. These components include the SC-01’s protective rubber boot, case, alligator or belt clip, sensor retainer, sensor, LCD, control buttons, infrared (IR) communications port, printed circuit boards, alarm LEDs, buzzer, vibrator, and batteries.
Threaded Inserts Figure 2: SC-01 Rear View Protective Rubber Boot A rubber boot installed over the case helps protects the SC-01. The boot allows viewing of the display and alarm lights and access to the control buttons, battery cover, sensor, and belt clip. The sensor must be removed to remove the protective rubber boot. Case The SC-01’s sturdy, high-impact plastic case is radio frequency (RF) resistant and is suitable for use in many environmental conditions, indoors and out.
Alligator and Belt Clips The SC-01 is available with two types of clips, the standard alligator clip and the optional belt clip. Both are illustrated in Figure 3 below. Alligator Clip Belt Clip Figure 3: Alligator & Belt Clips The alligator clip can be used to attach the SC-01 to clothing or a belt. Teeth in the alligator clip’s jaws prevent the unit from slipping off. The belt clip is used to easily clip the SC-01 on a belt.
Sensor The SC-01 is capable of accepting a variety of toxic gas sensors. The sensor is cylindrically shaped with a multi-pin plug on one end that mates with the sensor socket in the SC-01 and a diffusion port on the other end that allows ambient air to reach the sensor. The diffusion port on the end of the sensor is protected by two plastic ribs in a cross pattern. The various sensors used in the SC-01 are “smart” sensors.
Table 2: SC-01 Control Buttons Button Function ▲ DISP • Turns the LCD back light on. • Enters and scrolls through Display Mode when the SC-01 is in Measuring Mode. • Increases a parameter’s value or changes a parameter’s setting when a parameter is available for adjustment in an operational mode. POWER • • • • Turns the unit on and off. Turns the LCD back light on. Resets the alarm circuit (gas alarms). Enters Setup Mode with the AIR button.
alkaline batteries last at least 250 hours. The battery icon on the LCD shows remaining battery life. When the SC-01 detects low battery voltage, a low battery warning is activated. When battery voltage is too low for normal operation, the SC-01 sounds a dead battery alarm. The alkaline batteries can be replaced by removing the battery door at the bottom of the case. See “Replacing the Batteries” on page 33 for instructions to change the batteries.
Start Up This section explains how to start up the SC-01 and to get it ready for operation. Start-up Procedure 1. Press and briefly hold the POWER button until you hear a beep to turn on the SC-01. All the alarm LEDs turn on for a few seconds, then the vibrator activates briefly. While this is happening, all elements of the LCD display and the LCD backlight turn on for several seconds. 2. If the CAL. LIMIT menu item in Setup Mode is on, then one of the two following startup sequences takes place. If CAL.
CAUTION: If the instrument gives a low battery warning or dead battery alarm, change the alkaline batteries before using the instrument. See “Alarm Indications” on page 14 for a description of the battery alarm indications. 4. The SC-01 is now operating in Measuring Mode and the concentration of the target gas is displayed on the LCD. The backlight turns off after 30 seconds. SO2 0.00 PPM Performing a Fresh Air Adjustment Before using the SC-01, set the fresh air reading.
4. Release the AIR ▼ button when the LCD displays “RELEASE” in the upper left corner. RELEASE Adj. 5. The unit will take a few seconds to set the reading to 0 ppm, then indicate “FINISH” in the upper left corner of the LCD and return to Measuring Mode. Turning Off the SC-01 1. Press and hold the POWER button for about five seconds to turn off the unit. The buzzer will sound while the POWER button is being pressed before the unit turns off. 2.
Operation in Measuring Mode This section covers the operation of the SC-01 in Measuring Mode. It explains Normal Operation, Display Mode, and alarm indications. Normal Operation When the SC-01 comes out of its startup sequence, see “Start Up” on page 10, it is in normal operation if no alarm indications are taking place. It is advisable to perform a fresh air adjustment when the SC-01 comes out of its startup sequence as described in “Start Up”.
2. Press and release the ▲ DISP button to enter Display Mode. The LCD backlight will activate and the LCD will display the detection range full scale value. 3. Press and release the ▲ DISP button again to proceed to the PEAK Screen. The LCD displays the peak gas reading since the SC-01 was turned on. 4. Press and release the ▲ DISP button again to proceed to the STEL Screen. The LCD displays the STEL value. 5. Press and release the ▲ DISP button again to proceed to the TWA Screen.
Table 3: Alarm Types and Indications Alarm Type Warning LCD Indications Other Indications • Gas reading flashes. • Back light turns on. • Pulsing tone alternates with alarm LEDs flashing once per second. • Unit vibrates once per second. • Gas reading flashes. • Back light turns on. • Pulsing tone alternates with alarm LEDs flashing twice per second. • Unit vibrates twice per second. • Back light turns on. • Gas reading flashes. • TWA or STEL replaces the gas name in the upper left of the LCD.
Table 3: Alarm Types and Indications Alarm Type Sensor Failure LCD Indications Gas name and reading replaced by SENSOR FAIL. System Failure Gas name and reading replaced by CIRCUIT FAIL. Clock Failure Gas name and reading replaced by CLOCK FAIL Other Indications Quick pulsing tone and LED flashing for a few seconds alternates with the unit vibrating for one second. Resetting Gas Alarms To reset a gas alarm, press and release the POWER button after the gas reading falls below the Warning level.
4. If the over range condition continues, you may need to replace the sensor. 5. If the over range condition continues after you have replaced the sensor, contact RKI Instruments, Inc. for further instructions. Responding to Battery Alarms WARNING: The SC-01 is not operational as a gas monitoring device during a dead battery alarm. Take the SC-01 to a nonhazardous area and change the alkaline batteries as described in “Replacing the Batteries” on page 33.
Using the SC-01 With the Optional Extender Cable The SC-01 can be used with an optional extender cable in applications where it is necessary that the sensor be remote from the instrument. The sensor is removed from the instrument and the cable is connected to the instrument on one end and to the sensor on the other. Sensor RKI AIR DISP POWER Extender Cable Sensor Retainer Cable Retainer Figure 5: The SC-01 With an Extender Cable Do the following to install the extender cable. 1.
4. If the sensor retainer slides out with the sensor, pull the sensor out of the bottom of the sensor retainer. If the sensor retainer slides out without the sensor, pull the sensor out of the SC-01. 5. Insert the connector (plug) end of the sensor into the sensor end of the extender cable and gently push it in until it bottoms out with the sensor plug on the end of the sensor contacting the sensor socket at the bottom of the cable’s sensor opening.
12. With the extender cable plug gently touching sensor socket, turn the extender cable plug clockwise or counterclockwise while pushing it very lightly until you feel it drop into place as the plug aligns with the sensor socket and partially engages it. With the extender cable plug and sensor socket partially engaged, the plug will no longer rotate freely. CAUTION: Do not force the extender cable plug into the sensor socket. Forcing a sensor into the sensor socket may damage the sensor or the socket. 13.
Data Logging The SC-01 features the ability to log data to its internal memory and download it to a computer via the infrared communications port on the upper right side. It logs gas readings during normal operation, alarm data, and calibration data. To utilize the SC-01’s downloading capability, you will need the SC-01 Data Logger Management Program and a computer with an infrared port or a USB port that runs one of the following operating systems: Windows 98, Windows 2000, or Windows XP.
Setup Mode This section describes the SC-01 in Setup Mode. In Setup Mode, you can move through a menu of screens to do the following: • Set the date and time • Perform a fresh air adjustment (part of a calibration) • Perform a span adjustment (part of a calibration) • Update the alarm point settings • Update the calibration frequency Using Setup Mode WARNING: The SC-01 is not in operation as a gas detector while in Setup Mode.
1. When the DATE Screen is displayed, press and release the POWER button. A screen appears with the year flashing in the upper left, the date in the middle, and the time in the lower right. 2006 12.11 08:00 2. Use the AIR ▼ or the ▲ DISP button to display the desired year. 3. Press and release the POWER button to save the setting. The month setting flashes. 4. Repeat steps 2 and 3 to enter the month, day, hour and minute setting. When you save the minute setting, you return to the DATE Screen.
3. Press and hold the AIR ▼ button. The LCD displays “hold” prompting you to hold the AIR ▼ button. AIR CAL hold 4. After a moment, the LCD will indicate “Adj.”. Continue to hold the AIR ▼ button. AIR CAL Adj. 5. Release the AIR ▼ button when the LCD displays “RELEASE” in the upper left corner. RELEASE Adj. 6. The unit will take a few seconds to set the reading to 0 ppm, then indicate “FINISH” in the upper left corner of the LCD and return to the AIR CAL Screen.
Table 5: Required Calibration Cups & Calibration Flow rates Target Gas Required Calibration Cup Required Regulator, Flowrate Flow Direction Specified on Calibration Cup Ammonia (NH3) 81-1139RK-NH3 81-1051RK-25, 0.25 LPM No Arsine (AsH3) 81-1139RK 81-1051RK, 0.5 LPM Yes Carbon Dioxide (CO) 81-1139RK 81-1051RK, 0.5 LPM Yes Chlorine (CL2) 81-1139RK-CL2 81-1051RK, 0.5 LPM No Hydrogen Cyanide (HCN) 81-1139RK 81-1051RK, 0.5 LPM Yes Hydrogen Sulfide (H2S) 81-1139RK 81-1051RK, 0.
3. Confirm that the regulator on/off knob is turned all the way clockwise (closed) and screw the calibration gas cylinder onto the regulator. Be sure to use the regulator that generates the required flowrate for your target gas specified in Table 5 above. WARNING: If the wrong flowrate is used to calibrate your SC-01, the calibration will not be accurate. 4. Push the calibration cup into the sensor retainer over the sensor face. 5. At the SPAN CAL screen, press and release the POWER button.
11. If the span adjustment is successful, the LCD will show the following screen before returning to the SPAN CAL screen. SPAN CAL End 12. If the span adjustment fails, the LCD will show the following screen, flash the alarm LEDs, and pulse the buzzer and vibrator. SPAN CAL FAIL When this screen appears, press and release the POWER button. The LCD will show the following screen before returning to the SPAN CAL screen. SPAN CAL End 13. Turn the regulator on/off knob clockwise to close it. 14.
NOTE: The sensor has the standard alarm points saved in its memory. Changing the alarm points in this menu item does not affect the alarm points that are saved in the sensor. If the sensor is moved to another SC-01, the standard alarm points will be loaded. 1. When the ALARM-P Screen is displayed, press and release the POWER button. The WARNING Screen appears displaying the Warning setpoint. The setpoint is flashing. WARNING 2.00 PPM 2.
setpoint. The unit will proceed to the TWA Screen. The TWA setpoint is flashing. TWA 5.00 PPM 8. Use the AIR ▼ and ▲ DISP buttons to adjust the TWA setpoint to the desired value. To turn the TWA alarm off, adjust the alarm point down to towards zero and continue to adjust it down with the AIR ▼ button until “OFF” is displayed. 9. Press and release the POWER button to accept the displayed TWA setpoint. The following LCD will show the following screen before returning to the ALARM-P screen.
Updating the Calibration Frequency Entering the CAL. LIMIT menu item allows you to change the calibration frequency. CAL. LIMIT The calibration frequency defines how often a calibration is required. It is set in days. For example, if the calibration frequency is set to 90 days, calibration will be due 90 days after the last successful calibration. 1. When the CAL. LIMIT Screen is displayed, press and release the POWER button. The calibration frequency value appears and is flashing. CAL.
Maintenance This section discusses calibration of the SC-01 and describes troubleshooting procedures for the SC-01. It also describes how to change the SC-01’s batteries as well as how to replace the sensor. WARNING: RKI Instruments, Inc. recommends that service, calibration, and repair of RKI instruments be performed by personnel properly trained for this work. NOTE: Replacing sensors and other parts with original equipment does not affect the intrinsic safety of the instrument.
Table 7: Troubleshooting the 01 Series Symptoms Probable Causes Recommended Action • The LCD is blank. • The unit may have been turned off. • The alkaline batteries may need to be replaced. 1. To turn on the unit, press and briefly hold the POWER button until you hear a beep. 2. If the unit does not turn on, replace the alkaline batteries. 3. If the difficulties continue, contact RKI Instruments, Inc. for further instruction.
Replacing the Batteries WARNING: To prevent ignition of a hazardous atmosphere, batteries must only be changed in an area known to be nonhazardous. Replace the batteries when the battery icon indicates that the unit is in low battery warning. When in low battery warning, only the right most battery level indication bar is displayed in the battery icon on the LCD, and the icon will be flashing.
5. Reinstall the battery cover. NOTE: If the unit has been without batteries or if the old batteries have been dead for an extended period, allow 5 minutes after the new batteries have been installed for the sensor to stabilize. Replacing the Sensor WARNING: Replace the sensor in a non-hazardous environment. Since the SC-01 sensor is capable of saving calibration information in its memory, replacement sensors are shipped from the factory calibrated.
Sensor Opening Sensor Socket Notch for Sensor Retainer Tab Figure 7: Sensor Opening & Sensor Socket in SC-01 AIR RKI DISP Sensor POWER Figure 8: Inserting the New Sensor 6. With the sensor plug gently touching sensor socket, turn the sensor clockwise or counterclockwise while pushing the sensor very lightly until you feel it drop into place as the sensor plug aligns with the sensor socket and partially engages it.
CAUTION: Do not force the sensor into the sensor socket. Forcing a sensor into the sensor socket may damage the sensor or the socket. 7. With the sensor plug and sensor socket partially engaged, push the sensor into the SC-01 so that the sensor plug fully engages the sensor socket. This will push the sensor in about 1/16” farther than the partially engaged position. 8.
11. Press and briefly hold the POWER button until you hear a beep to turn on the SC-01. After a few seconds, the screen shown on the left below will appear with the “S-CH” flashing indicating that the sensor has been changed. After a few seconds, the two screens will begin alternating. In the example below, the target gas is SO2. GAS CHANGE SO2 S-CH S-CH 12. Press and release the POWER button and the startup sequence will begin as described in “Start-up Procedure” on page 10.
Parts List Table 8 lists replacement parts and accessories for the SC-01.
Table 8: Parts List Part Number Description 81-0196RK-04 Calibration cylinder, 10 ppm HCN in nitrogen, 34 liter 81-1051RK Regulator, fixed flow, w/gauge & knob, 0.5 LPM, for 34 liter aluminum/58 liter/103 liter cylinder, 81-1051RK-25 Regulator, fixed flow, w/gauge & knob, 0.
Table 8: Parts List Part Number Description ESM-01DH-ASH3 Sensor, AsH3 (arsine), 0 - 1.50 ppm, diffusion only type ESM-01DH-D-HCN Sensor, HCN (hydrogen cyanide), 0 - 15.0 ppm, diffusion only type ESM-01DH-D-SO2 Sensor, SO2 (sulphur dioxide), 0 - 6.00 ppm, diffusion only type ESM-01DH-PH3 Sensor, PH3 (phosphine), 0 - 1.00 ppm ESM-01R-D-NH3 Sensor, NH3 (ammonia), 0 - 75.0 ppm, diffusion only type ESM-K01-D-CL2 Sensor, Cl2 (chlorine), 0 - 3.
