MINI-SA PORTABLE GAS DETECTION INSTRUMENT 1
INTRINSICALLY SAFE GAS LEVEL DETECTOR C R 39NO US 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.
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 .....................................
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 (%).
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 INSTRUMENTS Service Department. 3.2 REGISTRATION Fill out and mail the postage paid Registration Card provided.
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.
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.
4.2 AUDIBLE ALARMS The SCOTT INSTRUMENTS MINI-SA has an audible alarm which is activated 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.
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 environments 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 BATTERY INDICATION. 4.
5.0 SWITCH FUNCTIONS AND DISPLAYS All operations on the MINI-SA Portable Detector are controlled by two pushbuttons 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 depressed 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.
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 QUALIFIED INSTRUMENT MAINTENANCE PERSONNEL.
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.
sensor type has been changed or if the previous calibration was not successful, the bottom line of the display will show “CALIBRATION REQUIRED”. ppm 0 For Toxic Gases MENU 20.9% O2 For O2 MENU In the normal Operating Mode, the following information is displayed: - Gas concentration in either ppm (toxic Gas) or % (oxygen) - Battery life indication - Backlight prompt - Menu prompt To turn OFF the instrument, depress and hold both push-buttons.
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.
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” command and one of the following screens will be displayed: ALARM SETPOINT For Toxic Gases NEXT SELECT O2 ALARM SETPOINT For O2 NEXT SELECT To go to the ALARM SETPOINT menu, depress the “SELECT” pushbutton.
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” command 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”.
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 supplied calibration gas cylinders. When performing an auto-zero with an oxygen unit, be sure the area contains 20.9% oxygen. To perform Zero Calibration of the sensor as described in Section 6.
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 CALIBRATION”. 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 per Section 6.3 to procede.
Calibration cylinders supplied by SCOTT INSTRUMENTS contain 25 PPM H2S or 50 PPM CO. To use another certified concentration, depress the left 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 Cl2 = 5.0 ppm ClO2 = 5.0 ppm Cl2 HCN = 10.0 ppm H2S = 25 ppm NH3 = 25 ppm NO2 = 5.0 ppm PH3 = 1.
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.
Attach the hose of the Adapter to the calibration gas cylinder and begin flowing gas to the cap at a flow rate of 500 cc/min. (300 cc/min. for Cl2 and ClO2). When the instrument detects the gas, the display will change to one of the following screens: SENSOR For Toxic Gases SPAN CALIBRATION
Note: SCOTT INSTRUMENTS supplies Teflon®-lined tubing with all chlorine and ammonia calibration kits. Sticky gases such as chlorine and ammonia require this tubing be used for calibration. Using tubing of another type may inhibit the automatic calibration of a MINI-SA and lead to improper readings or a false failed sensor message. All other calibration kits are supplied with Tygon (R-3603) Tubing.
6.6 PEAK / HOLD MENU The MINI-SA can be set to display either the lowest and highest gas reading (PEAK) or just the highest toxic gas or lowest oxygen reading (HOLD) during use. To enter the PEAK/HOLD menu, depress the “SELECT” pushbutton when the PEAK/HOLD menu is displayed as described in Section 6.2.
4 For Toxic Gases ppm MAX = <_> ppm MENU 20 For O2 % O2 MAX = 21.5 % MIN = 20.9 % MENU Current and peak readings update continuously while this screen is displayed. If the PEAK menu is accessed from a peak reading display, the option “SHOW PEAK” will read “HIDE PEAK” instead, as follows: PEAK LEVEL For Toxic Gases MAX =<_> ppm RESET HIDE PEAK PEAK PEAK O2 LEVEL For O2 MAX =20.9 % MIN = 20.
NOTE: After an Alarm Condition occurs and the Audible Alarm is silenced as instructed in Section 4.0, the instrument will automatically change to the “SHOW PEAK” display to inform the user of the actual level responsible for the alarm condition. To return to the standard operating screen, depress the pushbutton under “HIDE PEAK,” which appears in place of “MENU.” 6.6.
6.7 ALARM SETPOINT MENU The “ALARM SETPOINT” can be adjusted by the user in the ALARM SETPOINT menu within the following ranges: CO = 5 to 250 ppm Cl2 = 0.1 to 10.0 ppm ClO2 = 0.10 to 2.00 ppm HCN = 0.1 to 50.0 ppm H2S = 5 to 100 ppm NH3 = 5 to 100 ppm NO2 = 0.2 to 5.0 ppm O2 LO = 0.0 to 21.0% O2 HI = 21.0 to 25.0% PH3 = 0.10 to 5.00 ppm SO2 = 0.5 to 20.0 ppm Very low oxygen alarm settings are useful when the instrument is used to verify nitrogen purging.
the “OK” pushbutton to return to the Operating Mode. To change the setpoint, depress the “CHANGE” pushbutton. One of the following screens will be displayed: ALARM SETPOINT For Toxic Gases HI ALARM = <_ >ppm UP DOWN CHANGE O2 ALARM For O2 HI ALARM = 23.5% LO ALARM = 19.5% LO HI For toxic gases, choose “UP” or “DOWN” to change the corresponding “ALARM SETPOINT”.
CHANGE O2 ALARM For O2 LO ALARM = 19.5 % UP DOWN To raise or lower this setpoint, select the “UP” or “DOWN” command. For example, choose “DOWN” and the following screen will appear: CHANGE O2 ALARM For O2 LO ALARM = 19.5 % DOWN SET The % value will flash while this screen is displayed. Each time the “DOWN” pushbutton is depressed, the setpoint will be decreased by 0.1%. If the “UP” pushbutton had been chosen, the value would be increased by 0.1% each time the pushbutton was depressed.
Depressing the “OK” pushbutton will display one of the following screens: ALARM For Toxic Gases NON-LATCHING LATCH OK O2 ALARM For O2 NON-LATCHING LATCH OK The status of the alarms will be displayed as “NON-LATCHING” or “LATCHING”. Status can be changed by depressing the left pushbutton. Depress the “OK” pushbutton to leave the status as indicated.
The STEL (Short Term Exposure Level) function measures the level of toxic gas during a fifteen (15) minute interval and alarms when the preset STEL value in parts per million is exceeded. The alarm levels are as follows: STEL TWA Ammonia 35 ppm 25 ppm Carbon monoxide 100 ppm 25 ppm Chlorine 1 ppm 0.5 ppm Chlorine Dioxide 0.3 ppm 0.1 ppm Hydrogen Cyanide 4.0 ppm 2.0 ppm Hydrogen sulfide 15 ppm 10 ppm Nitrogen Dioxide 5.0 ppm 3.0 ppm Phosphine 1 ppm 0.
Depressing the “RESET” pushbutton will reset the TWA value, the STEL value, and time all to “0”. The instrument will automatically go back into the Operating Mode and begin collecting measurement data. The “DISABLE” pushbutton turns off the TWA/STEL functions. If the TWA/ STEL functions are off, one of the following screens will be displayed: TWA/STEL MENU TIME AVERAGE VALUES For Toxic Gases RESET ENABLE Depress the “RESET” pushbutton to go back to the Operating Mode.
6.9 CONFIGURATION MENU The CONFIGURATION menu of the SCOTT INSTRUMENTS MINI-SA provides the user with the following two (2) optional features: • BATTERY SAVER mode can extend operational battery life to several hundred hours by turning off the instrument graphic display during normal non-alarm operation.
If an alarm condition occurs while in the BATTERY SAVER mode, the graphic display will come on automatically and remain on until the alarm is reset. After the alarm indication clears, the graphic display will remain on for thirty (30) seconds and then the display will go blank as described above. If the BATTERY SAVER mode had already been enabled , the graphic display will show the following: DISABLE BATTERY SAVER MODE? YES NO Depressing the “YES” pushbutton will turn off the BATTERY SAVER mode. 6.9.
has been entered, the instrument will display the following screen: PASSWORD PROTECTION FOR ADVANCED MENUS TURN CHANGE ON PASSWORD The MINI-SA is shipped from the factory with password protection off. The “TURN ON” pushbutton will bring up the following display: PASSWORD PROTECTION LOCK OUT ACCESS TO ADVANCED MENUS? YES NO Pressing “NO” returns the instrument to normal operation with no password required to use all menu functions.
Use the “UP” and “SET” push-buttons to enter the correct password. Entering the incorrect password will display an INCORRECT PASSWORD message and allow the user to enter the password again. When the correct password has been entered, the instrument will display the following screen: PASSWORD PROTECTION FOR ADVANCED MENUS TURN OFF CHANGE PASSWORD Depress the “TURN OFF” pushbutton and the instrument will display the menus as described in section 6.2.
VERIFY NEW PASSWORD 5678 UP SET Note: If the pushbutton is not depressed within fifteen (15) seconds, the instrument will beep once and automatically go back to the operating mode and the password will be unchanged. If you wish to change the password shown in the VERIFY NEW PASSWORD screen, depress the “CHANGE” pushbutton. The previous ENTER NEW PASSWORD screen will appear and changes can be made. Be sure to record the password in a safe pace for future use. NOTES: 1.
7.0 ERROR MESSAGES WARNING A SCOTT INSTRUMENTS MINI-SA INSTRUMENT THAT DISPLAYS ANY ERROR MESSAGE MUST BE REMOVED FROM SERVICE IMMEDIATELY AND THE FAILURE DIAGNOSED AND REPAIRED BY AUTHORIZED PERSONNEL. DO NOT ASSUME THAT A PROBLEM HAS CORRECTED ITSELF IF A PREVIOUSLY DISPLAYED ERROR MESSAGE DOES NOT APPEAR A SECOND TIME.
8.0 CALIBRATION GASES Contact your SSCOTT INSTRUMENTS distributor, sales representative, or the SCOTT INSTRUMENTS Service Center for information regarding availability of Calibration Gases and accessories for the SCOTT INSTRUMENTS MINI-SA Portable Gas Detection Instrument. Calibration eguipment from SCOTT INSTRUMENTS: Calibration Kits ( Including gas cylinder, regulator, cal adapter and tubing) P/N 096-2389 25 ppm H2S P/N 096-2390 50 ppm CO P/N 096-2391 18.
9.
CARBON MONOXIDE SPECIFICATIONS Range: 0 to 500 ppm (for CO 500) 0 to 999 ppm (for CO 999) Response Time: T90 < 25 seconds Operating Temperature Range: o -20 to +50 C o (-4 to +122 F) Graphic Display Temperature Range: o -10 to +60 C o (+14 to +140 F) Operating Humidity: 15 to 90% RH, Non-Condensing Recommended Storage Temperature: o 0 to 20 C o (32 to 68 F) Sensor Accuracy: ±3% of Applied Gas Linearity: ±3% of Full Scale Battery Life: About 100 Hours - Non-Alarming About 800 Hours in Battery Save Mode Senso
SULPHUR DIOXIDE SPECIFICATION Range: 0.0 to 99.
PHOSPHINE SPECIFICATIONS Range: 0.00 to 9.
CHLORINE SPECIFICATION Range: 0.0 to 99.
AMMONIA SPECIFICATIONS Range: 0 to 200 ppm Response Time: T90 < 150 seconds Operating Temperature Range: o -25 to +30 C o (-13 to +86 F) Graphic Display Temperature Range: o -10 to +60 C o (+14 to +140 F) Operating Humidity: 15 to 90% RH, Non-Condensing Recommended Storage Temperature: o 0 to 20 C o (32 to 68 F) Sensor Accuracy: ±3% of Applied Gas Linearity: ±3% of Full Scale Battery Life: About 100 Hours - Non-Alarming About 800 Hours in Battery Save Mode Sensor Cross Sensitivity: Carbon Monoxide at 300 pp
CHLORINE DIOXIDE SPECIFICATION Range: 0.00 to 2.
OXYGEN SPECIFICATIONS Range: 0.0 to 25.0% Response Time: T95 = 15 seconds Operating Temperature Range: o -20 to +50 C o (-4 to +122 F) Graphic Display Temperature Range: o -10 to +60 C o (+14 to +140 F) Operating Humidity: 0 to 99% RH, Non-Condensing Recommended Storage Temperature: o 0 to 20 C o (32 to 68 F) Sensor Accuracy: ±3% of Applied Gas Linearity: ±2% of Full Scale Battery Life: About 100 Hours - Non-Alarming About 800 Hours in Battery Save Mode Consult Factory for additional information.
HYDROGEN CYANIDE SPECIFICATION Range: 100 ppm Response Time: T90 < 200 seconds Operating Temperature Range: o o -20 to +50 C o o (-4 to +122 F) Graphic Display Temperature Range: o -10 to +60 C o (+14 to +140 F) Operating Humidity: 15 to 90% RH, Non-Condensing Recommended Storage Temperature: o 0 to 20 C o (32 to 68 F) Sensor Accuracy: ±3% of Applied Gas Linearity: ±3% of Full Scale Battery Life: About 100 Hours - Non-Alarming About 800 Hours in Battery Save Mode Sensor Cross Sensitivity: Carbon Monoxide at
NITROGEN DIOXIDE SPECIFICATIONS Range: 150 ppm Response Time: T90 < 25 seconds Operating Temperature Range: o -20 to +50 C o (-4 to +122 F) Graphic Display Temperature Range: o -10 to +60 C o (+14 to +140 F) Operating Humidity: 0 to 90% RH, Non-Condensing Recommended Storage Temperature: o 0 to 20 C o (32 to 68 F) Sensor Accuracy: ±3% of Applied Gas Linearity: ±3% of Full Scale Battery Life: About 100 Hours - Non-Alarming About 800 Hours in Battery Save Mode Sensor Cross Sensitivity: Carbon Monoxide at 300
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