OTIS OI-315 TOCSIN3 Operation Manual
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OI-315 TOCSIN3 Personal Monitor
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Operation Manual
Revision 2.0
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Product Overview
The Otis Instruments Model OI-315 TOCSIN3 Personal Monitor is a safety device
designed to detect the presence of in ambient air. When activated, the OI-315
continuously monitors ambient air for the presence of toxic gas and alerts the user to
potentially unsafe exposure with visual, vibrating, and audible alarms.
The OI-315 features an alligator clip that allows it to be worn on personnel in the
field at all times, as well as: rubber enclosure for shock prevention, water/dust proof
enclosure, adjustable alarm set points, LCD display with LED backlight, data logging
capability, user-replaceable sensor element, and user-replaceable battery.
NOTE: The images in this manual reflect an H2S unit. Some display screen images
may vary slightly from the unit purchased (based on the gas-type).
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Table of Contents!
Product Overview ............................................................................................................... 2
Introduction ......................................................................................................................... 5
Complete System Diagram ................................................................................................ 5
Complete System ........................................................................................................................................ 5
LCD Display Symbols ................................................................................................................................. 6
Power On ............................................................................................................................. 7
Power Off ............................................................................................................................. 7
Basic Operation .................................................................................................................. 8
Gas Measure Mode .................................................................................................................................... 8
LCD Backlight On/Off .................................................................................................................................. 8
Viewing Date and Time ............................................................................................................................... 8
Setting Date and Time ................................................................................................................................ 9
Alarms and Indicators ...................................................................................................... 10
Setting Alarms ........................................................................................................................................... 10
Default Alarm Set Points ........................................................................................................................... 10
Alarm Displays .......................................................................................................................................... 11
Alarm Indicators ........................................................................................................................................ 11
Returning to Normal Operating Mode Following a Low Alarm .................................................................. 11
Returning to Normal Operating Mode Following a High Alarm ................................................................. 12
Indication of Peak Value and STEL / TWA Value ..................................................................................... 12
Battery Notifications .................................................................................................................................. 12
Data Logging (Alarm Data) .............................................................................................. 13
Fresh Air Calibration ........................................................................................................ 14
Standard Gas Calibration ................................................................................................ 15
Battery Replacement ........................................................................................................ 17
Sensor Element Replacement ......................................................................................... 18
User Notice ........................................................................................................................ 20
Approval Label Notes ....................................................................................................... 20
Specifications ................................................................................................................... 21
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Introduction
This document is an Operation Manual containing diagrams and step-by-step instructions for proper
operation of the Otis Instruments, Inc. Model OI-315 TOCSIN3 Personal Monitor. This document
should be read before initial operation of the product.
Should a question arise during the use of the product, this document will serve as a first reference
for consultation. If further questions arise, or if the device is not working properly, please contact
the sales representative of this product.
Complete System Diagram
The following diagrams should be consulted for identification of the system and all
parts that may be referred to in this operation manual.
Complete System
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Gas sensor
2
Buzzer
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Green power button
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Blue arrow button
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LCD display screen
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Alarm LED
7
Belt clip
8
Type label
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LCD Display Symbols
Alarm
Date
First Alarm
Month
Second Alarm
Time
Safety Success
Log Value
Safety Failure
Time Average Level
Alarm
Fresh Air Calibration
Time Average Level
Alarm
Standard Gas Calibration
Max Peak Value
Battery
Min Peak Value
Unit
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Power On
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To power on the device, press and hold the green power button for approximately three
seconds.
When powered on, the device will vibrate, flash, and sound an audible alarm to verify
that those features are active. After a 10 second countdown, a “V” icon will flash on the
display screen and the current level of measured gas in ambient air will be shown.
When in Gas Detection Mode (Normal Operating Mode), the “V” icon will disappear
(after blinking several times).
NOTE: In the event that stabilization of the device fails, Gas
Measure Mode will not be entered. Instead, a blinking “X” will
appear on the display screen. The “X” indicates that calibration
of the sensor, or aftercare of the instrument, is required.
Power Off
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To power off the device, press and hold the green power button for approximately three
seconds. The display screen will countdown the number of seconds remaining until the
device is “OFF.”
NOTE: If the green power button is pressed while the device is not in Gas
Measure Mode, or if the green power button is not held down for the required
amount of time for powering off the device, the device will remain on.
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Basic Operation
NOTE: Appropriate calibration of the device is required prior to operation.
Always ensure that the device makes the proper detection response to the
pertinent gas. Verify that foreign materials that could interfere with the detection
of gas are not blocking the area where gas is to be detected.
Gas Measure Mode
Gas Measure Mode is the normal operating mode of the OI-315.
When in Gas Measure Mode, the concentration of gas and remaining
battery life are displayed on the screen.
LCD Backlight On/Off
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To turn on the LCD backlight, press the blue arrow button while in Gas Measure Mode.
To turn off the LCD backlight, press the blue arrow button again (or wait approximately
25 seconds for the backlight to turn off automatically).
Viewing Date and Time
1. Press and hold the blue arrow button for three seconds (while in Gas Measure
Mode).
2. When the icon is displayed on the screen, quickly press the blue arrow button.
The preset time ( = a.m. and = p.m.), year, month, and day are sequentially
confirmed (displayed with the icon or character equivalent of it) with each
additional press of the blue arrow button.
3. Press the green power button to return to Gas Measure Mode (or wait several
seconds for the device to automatically return).
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