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MINI-SA PORTABLE
GAS DETECTION
INSTRUMENT
1
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INTRINSICALLY SAFE GAS LEVEL DETECTOR R C US 39NO CERTIFIED BY UNDERWRITERS LABORATORIES INC. ONLY AS TO INTRINSIC SAFETY FOR USE IN HAZARDOUS LOCATIONS CLASS I, DIV, 1, GROUPS A, B, C, & D. CERTIFIED TO CANADIAN CSA STANDARD C22.2 NO. 157-92 WARNING: SUBSTITUTION OF COMPONENTS MAY IMPAIR INTRINSIC SAFETY. USE ONLY WITH APPROVED BATTERIES. TEMPERATURE CODE T3C. CAUTION: FOR SAFETY REASONS, THIS EQUIPMENT MUST BE OPERATED AND SERVICED BY QUALIFIED PERSONNEL ONLY. READ AND UNDERSTAND MANUAL BEFORE
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SCOTT INSTRUMENTS MINI-SA PORTABLE GAS DETECTION INSTRUMENT Contents 1.0 INTRODUCTION................................................................. 4 2.0 OPERATIONAL ENVIRONMENT ........................................ 4 3.0 GENERAL INSTRUCTIONS ............................................... 5 3.1 UNPACKING .......................................................... 5 3.2 REGISTRATION ..................................................... 5 3.3 BATTERY INSTALLATION ............................
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SCOTT INSTRUMENTS MINI-SA PORTABLE GAS DETECTOR 1.0 INTRODUCTION The SCOTT INSTRUMENTS MINI-SA Portable Gas Detector is a self contained instrument designed to detect and provide audible, visual, and tactile indication of the presence of oxygen or toxic gas in the air. The toxic gas concentration is monitored and shown in the graphic display in parts per million (ppm) of the atmosphere. The oxygen concentration is shown in the graphic display as a percent (%). When the gas level exceeds the pr
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3.0 GENERAL INSTRUCTIONS 3.1 UNPACKING Remove the SCOTT INSTRUMENTS MINI-SA instrument from its packaging and examine it for external damage. If any damage is found, notify your SCOTT INSTRUMENTS distributor, sales representative, or the SCOTT IN- STRUMENTS Service Department. 3.2 REGISTRATION Fill out and mail the postage paid Registration Card provided. Registering your SCOTT INSTRUMENTS MINI-SA instrument assures that you will re- ceive notification of any future enhancements and/or upgrades
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4.0 INSTRUMENT DESCRIPTION THE SCOTT INSTRUMENTS MINI-SA INSTRUMENT is designed for use as a personal monitor. The MINI-SA is equipped with a snap mounting clip for ease of use. A break-away neck strap and rubber boot are also available. All operations of the instrument are controlled by two push-button actuators which are large enough to accommodate use with gloved hands. In each menu screen, “PROMPTS” over each push-button define their use. The SCOTT INSTRUMENTS MINI-SA INSTRUMENT case is cons
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4.1 ALARM LEGENDS The following alarm legends appear in the graphic display: “ALARM” flashing legend indicates one of the following: a) Gas concentration which exceeds the preset level b) A Time Weighted Average (TWA) Alarm c) A Short Term Exposure Level (STEL) Alarm. For toxic gas, the ppm, TWA, or STEL level detected and the “ALARM” legend will flash alternately. A graphic battery level indicator appears continuously on the display screen. The indicator shows battery capacity as ten (10) lines
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4.2 AUDIBLE ALARMS The SCOTT INSTRUMENTS MINI-SA has an audible alarm which is acti- vated when any of the following conditions occurs: - The preset gas alarm level is exceeded (ALARM) - The Time Weighted Average (TWA) is exceeded - The Short Term Exposure Limit (STEL) is exceeded - The battery is exhausted - The sensor is missing or incompatible In addition, each time the instrument is turned ON, the audible alarm will pulse three times. The following describes the function of the Audible Alar
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4.3 VIBRATION ALARM An internal vibrating motor activates whenever the Audible Alarm sounds. The Vibration Alarm operates as a secondary alarm feature in high noise environ- ments where the audible alarm may be difficult to hear. The Vibration Alarm is reset the same as the Audible Alarm as described in Section 4.2. The Vibration Alarm will also pulse briefly whenever the MINI-SA instrument is turned ON or OFF. WARNING THE VIBRATION ALARM DOES NOT FUNCTION FOR THE LOW BAT- TERY INDICATION. 4.4
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5.0 SWITCH FUNCTIONS AND DISPLAYS All operations on the MINI-SA Portable Detector are controlled by two push- buttons located on the bottom of the unit. The operations vary depending on the operating mode and the graphic display appearing above the two switches. The unit sounds a brief audible “beep” whenever either pushbutton is de- pressed while the instrument is on. Whenever the instrument is turned ON or OFF, three successive audible tones will sound and the Red Alarm LED will flash. The Gre
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6.0 OPERATING INSTRUCTIONS Before using this instrument, read and understand ALL instructions for ALL operating modes described in this Section. Prior to use, the instrument should be checked for proper calibration as described in this Section. WARNING BEFORE EACH DAY’S USAGE, THE SENSITIVITY OF THE GAS SENSOR MUST BE TESTED ON A KNOWN CONCENTRATION OF CALIBRATION GAS. WARNING ACTUAL CALIBRATION SHOULD ONLY BE PERFORMED BY QUALI- FIED INSTRUMENT MAINTENANCE PERSONNEL. WARNING ANY INDICATION OR R
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6.1 INSTRUMENT TURN ON / OFF To turn the instrument ON, depress either pushbutton. Three successive “beeps” will sound. The Red LED will flash and the vibration alarm will pulse for each “beep.” The graphic display will show one of the following screens while the instrument initializes. The sensor installed in the unit defines which display is shown: SCOTT INSTRUMENTS For Toxic Gases MINI-SA VERSION X.X
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sensor type has been changed or if the previous calibration was not suc- cessful, the bottom line of the display will show “CALIBRATION REQUIRED”. ppm For Toxic Gases 0 MENU For O 20.9% O 2 2 MENU In the normal Operating Mode, the following
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6.2 MENU SELECTION From the Operating Mode screen, there are six menus that can be selected by the user. They are “ZERO CALIBRATION,” “SPAN CALIBRATION,” “PEAK/ HOLD,” “ALARM SETPOINT,” “TWA/STEL,” and “CONFIGURATION.” De- press the pushbutton below the MENU prompt on the display and then one of the following screens will appear: ZERO CALIBRATION For Toxic Gases NEXT AUTO ZERO AUTO CALIBRATION For O 2 NEXT CALIBRATE The AUTO ZERO or CALIBRATE command and “NEX
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PEAK / HOLD NEXT SELECT To go to the PEAK/HOLD menu, depress the “SELECT” pushbutton. To go to the next menu, depress the left pushbutton below the “NEXT” com- mand and one of the following screens will be displayed: ALARM SETPOINT For Toxic Gases NEXT SELECT O ALARM SETPOINT 2 For O 2 NEXT SELECT To go to the ALARM SETPOINT menu, depress the “SELECT” pushbutton. To go to the next menu, depress the left pushbutton below the “NEXT” c
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CONFIGURATION NEXT SELECT To go to the CONFIGURATION menu, press the “SELECT” pushbutton. To go to the next menu, depress the left pushbutton below the “NEXT” com- mand and the ZERO CALIBRATION for toxic gas or AUTO CALIBRATION for oxygen screen will again be displayed. The MINI-SA will scroll repeatedly through these Menus each time the “NEXT” pushbutton is depressed. Each time either pushbutton is depressed, the unit will sound a single “beep”. If no menu action is taken for
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6.3 ZERO CALIBRATION MENU The MINI-SA instrument can be Auto Zeroed at any time. An Auto Zero should only be performed in an area known to be free of toxic gas or any known cross sensitive materials. See Section 8.0 for SCOTT INSTRUMENTS sup- plied calibration gas cylinders. When performing an auto-zero with an oxy- gen unit, be sure the area contains 20.9% oxygen. To perform Zero Calibration of the sensor as described in Section 6.2, de- press the “AUTO ZERO” pushbutton when the ZERO CALIBRATIO
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6.4 SPAN CALIBRATION MENU FOR TOXIC GAS ONLY Note: The MINI-SA software requires that an “AUTO ZERO” be performed as described in Section 6.3 before the instrument will allow a “SPAN CALIBRA- TION”. Failure to do so will display the following screen when attempting a “SPAN CALIBRATION” of the instrument: AUTO ZERO REQUIRED BEFORE SPAN CALIBRATION ACKNOWLEDGE Depress both pushbuttons simultaneously to acknowledge this message and “AUTO ZERO” the instrument pe
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Calibration cylinders supplied by SCOTT INSTRUMENTS contain 25 PPM H S or 50 PPM CO. To use another certified concentration, depress the left 2 pushbutton below the “CHANGE” command. The one of the following screens will be displayed: SENSOR For Toxic Gases SPAN CALIBRATION GAS = <_> ppm UP DOWN Factory preset span calibration gas values: CO = 50 ppm Cl = 5.0 ppm 2 ClO = 5.0 ppm Cl 2 2 HCN = 10.0 ppm H S = 25 ppm 2 NH = 25 ppm 3 NO = 5.0 ppm
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This screen will remain on until the instrument detects calibration gas. If no calibration gas is detected after thirty (30) seconds, the instrument will sound a single beep and return to the operating mode. Depressing the “EXIT” pushbutton will also return the instrument to normal operation with no calibration having occurred. The last successful calibration will remain valid. To continue “SPAN CALIBRATION”, attach the 40014936 Calibration Adapter over the sensor cap as shown in Figure 4. TO
