Patent 6,590,690
N2O Portable Monitor
Portable Area Gas Monitor (PAGM) with
Infrared Sensor for N2O Gas
Instruction 3015-4787
Operation & Maintenance
Rev. 8 – February 2013
Product Leadership • Training • Service • Reliability
WARRANTY
Bacharach, Inc. warrants to Buyer that at the time of delivery this Product will be free from defects in material and
manufacture and will conform substantially to Bacharach Inc.'s applicable specifications. Bacharach's liability and Buyer's
remedy under this warranty are limited to the repair or replacement, at Bacharach's option, of this Product or parts thereof
returned to Seller at the factory of manufacture and shown to Bacharach Inc.'s reasonable satisfaction to have been
defective; provided that written notice of the defect shall have been given by Buyer to Bacharach Inc. within two (2) years
after the date of delivery of this Product by Bacharach, Inc.
Bacharach, Inc. warrants to Buyer that it will convey good title to this Product. Bacharach's liability and Buyer's remedy
under this warranty of title are li mited to the r emoval of any title defects or, at the election of Bacharach, to the
replacement of this Product or parts thereof that are defective in title.
The warranty set for th in par a gr a ph 1 does not apply to parts the Operating Instructions designate as having a limited shelflife or as being expended in normal use (e.g., filters).
THE FOREGOING WARRANTIES ARE EXCLUSIVE AND ARE GIVEN AND ACCEPTED IN LIEU OF (I) ANY
AND ALL OTHER WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE: AND (II) ANY
OBLIGATION, LIABILITY, RIGHT, CLAIM OR REMEDY IN CONTRACT OR T ORT, WHETHER OR NOT
ARISING FROM BACHARACH'S NEGLIGENCE, ACTUAL OR IMPLIED. The remedies of the Buyer shall be limited
to those provided herein to the exclusion of any and all other remedies including, without limitation incidental or
consequential damages. No agreement varying o r extending the foregoing warr a nties, remedies or this limitation will be
binding upon Bacharach, Inc. unless in writing, signed by a duly authorized office r of Bachara ch.
Register Your Warranty by Visiting
www.mybacharach.com
Product improvements and enhancements are continuous; therefore the specifications and information
contained in this document may change without notice.
Bacharach, Inc. shall not be liable for errors contained herein or for incidental or consequential damages in
connection with the furnishing, performance, or use of this material.
No part of this document may be photocopied, reproduced, or translated to another language without the pr ior
written consent of Bacharach, Inc.
Copyright © 2013, Bacharach, Inc., all rights reserved.
BACHARACH
and logos referenced herein belong to their respective owners.
®
is a registered trademark of Bacharach, Inc. All other trademarks, trade names, service marks
ii Instruction 3015-4787
N2O Portable Monitor Table of Contents
Table of Contents
1 INTRODUCTION ....................................................................................................................................... 1
1.1 How to Use This Manual ................................................................................................................. 1
1.2 Warning Statements ........................................................................................................................ 1
1.3 Caution Statements ......................................................................................................................... 1
1.4 Hazard Symbols on Monitor ............................................................................................................ 1
1.5 Safety Precautions ........................................................................................................................... 1
1.5.1 Hazardous Area Warning ................................................................................................. 1
1.5.2 Combustible/Flammable Gas Warning ............................................................................ 2
1.5.3 Explosive Atmosphere ....................................................................................................... 2
1.5.4 Misuse and Modifications to Monitor ............................................................................... 2
1.5.5 Altitude Limit .................................................................................................................... 2
1.5.6 Cleaning ............................................................................................................................. 2
1.6 Unpacking and Initial Checks ......................................................................................................... 2
1.7 Shipping Precaution ......................................................................................................................... 3
1.8 Features and Capabilities................................................................................................................ 3
1.9 Functional Overview ........................................................................................................................ 3
2 SPECIFICATIONS ..................................................................................................................................... 4
3 OPERATION .............................................................................................................................................. 5
3.1 Front Panel Display and Controls .................................................................................................. 5
3.2 Connecting Gas-Sample & Exhaust Lines ..................................................................................... 5
3.2.1 Overview ............................................................................................................................ 5
3.2.2 Connecting the Gas-Sample Line ..................................................................................... 5
3.2.3 Connecting the Exhaust Line (optional) .......................................................................... 6
3.3 Gas Detector Operation ................................................................................................................... 6
3.4 Time Weighted Average (TWA) Operation ..................................................................................... 8
3.4.1 Overview ............................................................................................................................ 8
3.4.2 Starting a New or Continuing TWA/twa.......................................................................... 8
3.5 Peak Reading Operation .................................................................................................................. 9
3.6 Leak Detector Operation ................................................................................................................. 9
3.7 Standby Mode ................................................................................................................................... 9
3.8 Battery – Charging and Using ...................................................................................................... 10
3.8.1 Charging the Battery ...................................................................................................... 10
3.8.2 Using the Battery ............................................................................................................ 10
3.9 Display Screens .............................................................................................................................. 10
3.9.1 Initial Power ON .............................................................................................................. 10
3.9.2 Filling the Purge-Air Bag ................................................................................................ 10
3.9.3 Data Display Screen ........................................................................................................ 10
3.9.4 Function Screens ............................................................................................................. 11
3.10 Working with System Faults ......................................................................................................... 14
3.10.1 Functional Overview ....................................................................................................... 14
3.10.2 Clearing / Silencing a Fault Alarm ................................................................................ 14
3.10.3 Viewing the Faults Log ................................................................................................... 14
3.10.4 Fault Codes ...................................................................................................................... 15
3.11 Working with the Gas Alarm ........................................................................................................ 16
3.11.1 Gas-Alarm Light .............................................................................................................. 16
3.11.2 Silencing a Gas Alarm ..................................................................................................... 16
3.12 Clearing the PPM & Faults Data .................................................................................................. 16
3.13 Working with the DIAG Function ................................................................................................. 16
3.13.1 Overview .......................................................................................................................... 16
3.13.2 Keypad Functions ............................................................................................................ 16
3.13.3 First Diagnostic Screen ................................................................................................... 17
3.13.4 Second Diagnostic Screen ............................................................................................... 17
3.14 Working with the P-CHK Function .............................................................................................. 18
3.14.1 Overview .......................................................................................................................... 18
Instruction 3015-4787 iii
Table of Contents N2O Portable Monitor
3.14.2 Keypad Functions............................................................................................................ 18
3.14.3 Screen Display ................................................................................................................. 18
3.15 Print/Plot Logged Gas Levels ........................................................................................................ 19
3.16 Downloading Stored Data to a Personal Computer ..................................................................... 20
3.17 Importing Saved Data Into a Spreadsheet ................................................................................... 21
4 MAINTENANCE ...................................................................................................................................... 22
4.1 Disassembly.................................................................................................................................... 22
4.2 Internal Particulate / Hydrophobic Filter Replacement ............................................................. 23
5 PARTS AND SERVICE ........................................................................................................................... 24
5.1 Replacement Parts & Optional Items ........................................................................................... 24
Replacement Parts...................................................................................................................... 24
Item Description ......................................................................................................................... 24
Part Number ............................................................................................................................... 24
Item Description ......................................................................................................................... 24
Part Number ............................................................................................................................... 24
5.2 Service Centers .............................................................................................................................. 25
6 DECLARATION OF CONFORMITY ....................................................................................................... 26
iv Instruction 3015-4787
N2O Portable Monitor Introduction
1 Introduction
1.1 How to Use This Manual
This manual provides important information on how to operate and service Bacharach’s Nitrous Oxide
O) Portable Monitor.
(N
2
To assure operator safety and the proper use of the monitor, please read, understand, and follow the
contents of this manual.
If you have a working knowledge of gas monitors, you will find this manual useful as a reference tool. If
you are new to the use of gas monitors, you can educate yourself about the principles of gas detection and
the proper operation of this device by reading this manual thoroughly.
1.2 Warning Statements
The use of the word WARNING in this manual denotes a potential hazard associated with the use of this
equipment. It calls attention to a procedure, practice, or condition, or the like, which if not correctly
performed or adhered to, could result in personal injury or death.
1.3 Caution Statements
The use of the word CAUTION in this manual denotes a potential hazard associated with the use of this
equipment. It calls attention to a procedure, practice, condition, or the like, which if not correctly
performed or adhered to, could result in damage to the equipment.
1.4 Hazard Symbols on Monitor
This symbol indicates the need to consult this operating instruction
manual when opening the enclosure.
WARNING: A potential risk exists if the operating instructions are
not followed.
This symbol indicates the presence of electric shock hazards when
the enclosure is opened.
WARNING: To avoid risk of injury from electric shock, do not open
the enclosure when power is applied.
1.5 Safety Precautions
1.5.1 Hazardous Area Warning
Hazardous Area Warning: This instrument has not been
designed to be intrinsically safe for use in areas classified as
hazardous locations. For your safety, DO NOT use it in hazardous
(classified) locations.
Instruction 3015-4787 1
Introduction N2O Portable Monitor
Item
Qty.
Part Number
N2O Portable Monitor
1
3015-4790
External Filter Assembly
1
3015-5324
Soft Carrying Case with
Shoulder Strap
Battery Pack & Charger
1
3015-5739
Stainless Steel Probe
1
3015-5326
Instruction Manual
1
3015-4787
Elbow
1
3015-3234
Tubing (3 ft)
1
0003-6182
1.5.2 Combustible/Flammable Gas Warning
Combustible/Flammable Gas Warning: This is NOT a safety
device. Some gases which this instrument can detect may be
combustible/ flammable. When properly configured, this instrument
is designed to alarm at concentrations that are lower than the
explosive limit of the gas. As such, it is the buyer’s responsibility to
initiate an immediate planned response to any gas leaks as soon as
they are detected. This equipment should NEVER be used to
measure or sample gases at or above their respective lower explosive
limits.
1.5.3 Explosive Atmosphere
Explosive Atmosphere: Do not operate this equipment in the
presence of flammable liquids, vapors or aerosols. Operation of any
electrical equipment in such an environment constitutes a safety
hazard.
1.5.4 Misuse and Modifications t o Monitor
The protection provided by the monitor may be impaired if the monitor is used in a manner not specified
by these instructions. Changes or modifications to this monitor will void the warranty.
1.5.5 Altitude Limit
6,562 ft (2,000 m)
1.5.6 Cleaning
Clean the outside of the monitor’s case using a dry cloth — DO NOT use soap and water.
1.6 Unpacking and Initial Checks
Your N2O Portable Monitor was carefully inspected at the factory before shipment, and packed so as to be
highly resistant to damage while in transport. When you receive the instrument, however, please unpack
it promptly and make a visual inspection to make sure that no damage has occurred during shipment. Also
check that all the following items have been received.
1 3015-5700
If damage was found, immediately file a claim with the carrier. If an item is missing, please contact
Bacharach’s Service Department for assistance (refer to Section 5.2 Service Centers).
2 Instruction 3015-4787
N2O Portable Monitor Introduction
1.7 Shipping Precaution
When shipping the instrument by air, deflate the purge-air bag to prevent it from bursting due to changes
in air pressure. Deflate the bag by selecting the EMTYBAG function as described on page 11.
1.8 Features and Capabilities
• Detects, measures, and displays the level of N
• Measurement range of 0–1,000 ppm with a resolution of 1 ppm
• Self contained purge-air bag, allowing the monitor to be used in a contaminated atmosphere
• Automatically logs up to 200 gas readings that can be printed / plotted for analysis
• Eliminates false alarms with use of non-dispersive IR source and sample draw system
• Visual and audible gas alarm indictors that are turned ON when the detected gas level exceeds
a user defined trip-point
• Extensive self diagnostics, providing both visual and audible indications when a fault occurs
• Battery powered, providing 8–12 hours of operation
O gas in the area being monitored
2
1.9 Functional Overview
The Bacharach Nitrous Oxide (N2O) Portable Monitor is designed to detect, measure, and display the
concentration of N
self-zeros every 4 minutes using its internal supply of fresh air.
During normal operation the N
detected on its front panel LCD. The monitor retains a log of previous readings that can be easily accessed
at a later time for analysis.
Front panel indicators and an audible alarm are provided to signal gas alarm and instrument fault
conditions. The audible alarm can temporarily be silenced by a push of a button, but will reactivate if the
gas level is still above the alarm trip point after a user-defined time period has elapsed.
O gas in the area being monitored. To ensure accurate gas measurements, the monitor
2
O Monitor displays both the current gas level and the peak gas level
2
The N
The monitor incorporates active diagnostics that continuously check the system for proper operation. A
front panel indicator is provided to alert an operator of system malfunctions, and fault codes are generated
that enable the operator to quickly identify the cause of the fault.
O Monitor requires only minor periodic maintenance such as the occasional replacement of filters.
2
Instruction 3015-4787 3
Specifications N2O Portable Monitor
2 Specifications
Product Type ..................... Portable N2O Gas Monitor
Measuring Range ............. 0 to 1,000 ppm
Warm-Up Time ................. 15 minutes
Detector Type.................... Infrared, Non-Dispersive
Sensitivity ......................... 1 ppm
Accuracy ............................ ±1 ppm ±5% of reading from 0 to 100ppm
and ±10% of reading from 101 to 1000ppm.
Response Time .................. 90% of response within 3 seconds; 100% in 5 seconds
Temperature Drift ............ 1.5 ppm per °C between purge cycles
System Noise .................... Less than 40dB(A) at 10 ft (3 m)
Operating Temp................ 32 to 122°F (0 to 50°C)
Ambient Humidity ........... 5 to 90% RH (non-condensing)
Altitude Limit ................... 6,562 ft (2,000 m)
Power ................................. DC power pack, provides 8–12 hours of operation
Power Consumption ......... 15 Watts
Front Panel ....................... 3 Indicator lights:
ON – Green LED flashes during warm-up, and then glows steady
during normal operation
FAULT – Yellow LED flashes when there is a system fault
ALARM – Red LED flashes when the gas level is above its alarm setting
Audible Alarm .................. Internal audible alarm programmable for any of the following conditions:
OFF, FAULT/ALARM, ALARM
Dimensions ....................... 9D x 14.5L x 5W inches (229 x 368 x 127 mm)
Weight ............................... Less than 9 lbs (4 kg) including battery
Valid Calibration Period
to Specifications ................ 12 months
Warranty ........................... 2 Years from date of shipment
4 Instruction 3015-4787
N2O Portable Monitor Operation
3 Operation
3.1 Front Panel Display and Controls
3.2 Connecting Ga s -Sample & Exhaust Lines
3.2.1 Overview
A single gas-sample line needs to be run from the N2O Monitor to the area to be monitored. If desired, an
optional exhaust line can be installed to vent N
3.2.2 Connecting the Gas-Sampl e Line
To connect the gas-sample line to the monitor, simply push the tubing onto the elbow connector and attach
the elbow onto the Gas Sample Port on the front of the monitor as shown in the illustration below.
The gas-sample line can be up to 50 ft (15.2 m) in length. All tubing bends should have a radius of no less
than 5" to insure proper airflow. If kinks or obstructions occur in the line the monitor may not function
properly.
The end of this line should be placed near the potential leak source and positioned to reduce the possibility
of mists, aerosols, oil, water, dust, or other contaminates being drawn into the monitor.
An external filter (P/N 3015-5324) should be attached to the end of this line. See figure below.
Instruction 3015-4787 5
O gas away from the monitor.
2
Operation N2O Portable Monitor
To connect the exhaust line to the exhaust
BACHARACH
PRESS ENTER FOR
3.2.3 Connecting the Exhaust Line (optional)
The optional exhaust line carries the exhausted gas sample away from the monitor.
The exhaust line can be up to 50 ft (15.2 m) in length. Ideally this line should terminate outdoors in a
location that is not exposed to the elements.
Connect the exhaust line to the monitor by firmly pushing the tubing into the Exhaust Port’s push-toconnect (PTC) fitting. If the exhaust line terminates outside the building, position the tubing so that no
water or moisture can enter the line. Note that this line does not require a termination filter.
port’s PTC fitting, firmly push the appropriate
tubing into the hole in the center of the
connector until it seats in the connector. Refer
to the figures at the left.
To remove tubing from a PTC connector, push
and hold the spring-l oad ed c ollar in war ds, then
simultaneously withdraw the tubing. Refer to
the figures at the right.
3.3 Gas Detector Operation
Turn ON the monitor as follows:
6 Instruction 3015-4787
CAUTION: Operate the monitor in its horizontal position (handle facing upwards).
Tilting the monitor to a vertical position while in operation may cause inaccurate
measurements to occur.
1. Lift up the shield located in front of the handle
2. Press the red power ON/OFF toggle switch.
3. Observe monitor’s firmware version is briefly displayed.
VERSION x.xx
NEW TWA/twa
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