WARRANTY POLICY
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 one (1) year 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 limited to the removal 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 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 TORT, 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 or extending the foregoing warranties, remedies or this limitation will be binding upon Bacharach, Inc. unless in writing,
signed by a duly authorized officer of Bacharach.
Register Your Warranty by Visiting: www.mybacharach.com/warranty-registration/
SERVICE POLICY
Bacharach, Inc. maintains a service facility at the factory. Some Bacharach distributors / agents may also have repair facilities; however, Bacharach assumes no liability for service performed by anyone other than Bacharach personnel. Repairs are warranted for 90-days after date of shipment (sensors, pumps, filters and batteries have individual warranties). Should your analyzer require non-warranty repair, you may contact the distributor from whom it was purchased or you may contact Bacharach directly.
If Bacharach is to do the repair work, send the monitor, prepaid, to the closest service center. Prior to shipping equipment to Bacharach, visit www.mybacharach.com for a Returned Merchandise Authorization Number (RMA #). All returned goods must be accompanied by a RMA #. Pack the equipment securely (in its original packing, if possible), as Bacharach cannot be held responsible for any damage incurred during shipping to our facility. Always include your RMA #, shipping address, telephone number, contact name, billing information and a description of the defect as you perceive it. You will be contacted with a cost estimate for expected repairs prior to the performance of any service work. For liability reasons, Bacharach has a policy of performing all needed repairs to restore the monitor to full operating condition.
NOTICES
Product improvements and enhancements are on-going, 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 prior written consent of Bacharach, Inc.
Copyright © 2019, Bacharach, Inc., All Rights Reserved.
BACHARACH is a registered trademark of Bacharach, Inc. All other trademarks, trade names, service marks and logos referenced herein belong to their respective companies.
1100-2294 Rev 1 |
1 |
Table of Contents
Table of Contents |
2 |
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1. Introduction |
6 |
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1.1 |
About this Manual |
6 |
1.2 |
Conventions |
6 |
1.2.1 Short Form Instructions |
6 |
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1.2.2 Iconography |
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1.3 |
General Safety Statements |
7 |
1.4 Safe Connection of Electrical Devices |
8 |
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2. Product Descriptions |
9 |
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2.1 |
Intended Uses / Applications |
9 |
2.2 |
Transmitter Construction |
9 |
2.3 |
Power Options |
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2.4 |
Diagnostic / Status LED |
10 |
2.5 |
Configurable Output Signals |
10 |
2.6 |
User Interface |
10 |
2.7 |
Technical Specifications |
10 |
2.8 |
Components |
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2.8.1 MGS-410 Components |
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2.8.2 MGS-450 Components |
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2.8.3 MGS-460 Components |
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3. Installation |
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3.1 |
General Information |
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3.2 |
Restrictions |
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3.3 |
Mechanical Installation |
17 |
3.4 |
Electrical Installation |
17 |
3.4.1 Preparations |
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3.4.2 Power & Signal Wiring |
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3.4.3 Relay Wiring |
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3.4.4 Installation of Remote Sensing Head |
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3.4.5 Connecting to MGS-408 Gas Detection Controller |
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3.4.6 Modbus RTU RS-485 Interface |
20 |
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1100-2294 Rev 1 |
2 |
3.4.7 Confirming Instrument Functionality |
21 |
4. Operation |
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4.1 Overview of Normal Operation |
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4.1.1 Applying Power & the Start-up Sequence |
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4.1.2 Verifying Analog Signals |
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4.1.3 Verifying the Modbus Signal |
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4.1.4 Status Indication |
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4.1.5 Switch Functions |
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4.1.6 Reset System to Factory Default Settings |
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4.2 MGS-400 Smartphone Application |
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4.2.1 Enable Bluetooth® Connection |
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4.2.2 Checking Status |
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4.2.3 Instrument Configuration |
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4.2.3.1 Change Alias |
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4.2.3.2 Change Unlock Code |
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4.2.3.3 Change Bluetooth Passcode |
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4.2.3.4 Reset to factory defaults |
29 |
4.2.3.5 Alarm Configuration |
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Low Alarm Setpoint |
29 |
High alarm Setpoint |
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Alarm Latching |
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4.2.3.6 Modbus Configuration |
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Address |
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Baud Rate |
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Stop Bits |
31 |
Parity |
31 |
Enable 120Ω Termination |
31 |
4.2.3.7 Output Configuration |
31 |
Analog Output Range |
31 |
Buzzer |
32 |
Relay Failsafe |
32 |
Alarm Delay |
32 |
Analog Zero Adjust |
32 |
1100-2294 Rev 1 |
3 |
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Analog Span Range |
33 |
5. Care & Maintenance |
34 |
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5.1 |
Maintenance Intervals |
34 |
5.2 |
Adjustments |
35 |
5.2.1 Introduction |
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5.2.2 General Calibration Procedure |
36 |
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5.2.3 Zero Adjustment |
36 |
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5.2.4 Span Adjustment |
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5.2.5 System Bump Test |
38 |
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5.3 Troubleshooting |
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5.3.1 Hexadecimal Format |
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5.3.3 Fault Codes |
39 |
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5.4 |
Sensor Maintenance |
41 |
5.4.1 Replacing the Sensor Module |
41 |
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5.5 |
Cleaning the Instrument |
42 |
6. Additional Information |
43 |
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6.1 |
Sensor Principle |
43 |
6.1.1 Electrochemical Sensors |
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6.1.2 Catalytic Bead Sensors |
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6.1.3 Semiconductor Sensors |
44 |
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6.1.4 Infrared Sensors |
44 |
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6.2 |
Disposing of the Instrument |
45 |
6.2.1 Disposing of the Electrical & Electronic Equipment |
45 |
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6.2.2 Disposing of Sensors |
45 |
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6.3 |
Sensor Specifications |
45 |
6.4 |
Modbus Registers |
46 |
6.4.1 Integration - Dynamic Sensor Data |
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6.4.2 Integration - Static Sensor Data |
47 |
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6.4.3 Integration - General System Setup |
48 |
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6.4.4 Integration – Calibration |
49 |
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6.4.5 Integration - User Debug Tools |
50 |
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6.4.6 MGS Compatibility - Status Flags |
50 |
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6.4.7 Integration - Status Flags |
50 |
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1100-2294 Rev 1 |
4 |
6.4.8 MGS Compatibility - Clear Special States |
51 |
6.4.9 Integration - User Tasks |
51 |
7. Ordering Information |
52 |
7.1 Part Numbers |
52 |
7.1.1 MGS-400 Gas Detector Configurations |
52 |
7.1.2 MGS-400 Series Accessories |
54 |
7.2 Service Center Locations |
55 |
1100-2294 Rev 1 |
5 |
1. Introduction
1.1 About this Manual
Thank you for investing in a Bacharach MGS-400 gas detector. To ensure operator safety and the proper use of the gas detector, please read the contents of this manual for important information on the operation and maintenance of the instrument.
1.2 Conventions
1.2.1 Short Form Instructions
This document uses a short form for describing steps (e.g. executing a command).
Example:
Accessing sensor calibration.
Short Form Instructions:
To select access sensor calibration: Home Tab Calibrate enter Unlock Code
Steps Required:
1.Open the Home Tab.
2.Select Calibrate.
3.When prompted, enter the Unlock Code to access calibration screen.
1.2.2Iconography
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Danger |
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Warning |
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Potentially hazardous situation which, if not avoided, could |
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Warning |
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result in death or serious injury. |
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Potentially hazardous situation which, if not avoided, could |
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Caution |
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result in physical injury or damage to the product or |
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environment. It may also be used to alert against unsafe |
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practices. |
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Important |
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Additional information on how to use the product. |
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1100-2294 Rev 1 |
6 |
1.3 General Safety Statements
IMPORTANT: Before using this product, carefully read and strictly follow the instructions in the manual. Ensure that all product documentation is retained and available to anyone operating the instrument.
DANGER: This instrument is neither certified nor approved for operation in oxygen-enriched atmospheres. Failure to comply may result in personal injury or death.
WARNING: Use this product only for the purposes specified in this document and under the conditions listed.
WARNING: This instrument has not been designed to be intrinsically safe for use in areas classified as being hazardous locations. For your safety, DO NOT use it in hazardous (classified) locations.
WARNING: In the event of an alarm or over-range condition, the sensor must be recalibrated to ensure continued accuracy.
WARNING: This product must be recalibrated if installed in a non-room condition environment (i.e. temperature or humidity extremes).
WARNING: The gas diffusion path can become occluded (moisture, dust, debris, frozen condensation) over time resulting in reduced or complete lack of gas detection and alarming function. Routine visual inspection of the gas detector and bump testing are suggested to ensure proper gas detection and alarm function.
CAUTION: Except for maintenance detailed in this manual, these products should only be opened and / or serviced by authorized Bacharach personnel. Failure to comply may void the warrant.
CAUTION: Operator assumes responsibility for complying with all laws, rules and regulations governing the use of this product.
CAUTION: Use only genuine Bacharach parts and accessories. Failure to comply may impair the operation of the product and / or void the warranty.
CAUTION: Only operate the product within the framework of a risk-based alarm signaling concept.
1100-2294 Rev 1 |
7 |
1.4 Safe Connection of Electrical Devices
WARNING: Before connecting this instrument to electrical devices not mentioned in this manual, consult the manufacturer or a qualified professional. Failure to comply may result in injury and / or damage to the product.
1100-2294 Rev 1 |
8 |
2. Product Descriptions
2.1 Intended Uses / Applications
MGS-400 gas detectors are to be installed in non-classified, non-hazardous, permanent locations for the purpose of continuously monitoring ambient air (indoor or outdoor) for the following gas types:
•Refrigerants
•Oxygen
•Toxic and combustible gases
WARNING: This instrument is neither certified nor approved for operation in oxygen-enriched atmospheres. Failure to comply may result in EXPLOSION.
WARNING: This instrument has not been designed to be intrinsically safe for use in areas classified as being hazardous locations. For your safety, DO NOT use it in hazardous (classified) locations.
2.2 Transmitter Construction
MGS-400 gas detectors may be purchased in the following configurations:
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MGS-410 |
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MGS-450 |
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MGS-450 |
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MGS-460 |
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Enclosure |
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IP66 |
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IP41 |
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IP66 |
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IP66 |
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Relays |
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3 |
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Communication |
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Modbus |
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Modbus |
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Modbus |
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Modbus |
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Output |
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Analog |
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Analog |
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Analog |
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Sensor |
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Integrated |
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Remote |
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2.3 Power Options
MGS-400 gas detectors may use the following power options:
•24 VAC
•19.5 to 28.5 VDC
1100-2294 Rev 1 |
9 |
2.4 Diagnostic / Status LED
MGS-400 gas detectors feature a three-color LED (green, orange and red) which are used, in combination with an audible alarm, to communicate the status of the instrument.
2.5 Configurable Output Signals
MGS-400 gas detectors may be connected to a Bacharach’s MGS-408 Gas Detection Controller or a third-party device capable of accepting digital and/or analog outputs from the gas detectors, such as a Building Management System (BMS) or Programmable Logic Controller (PLC). With the integrated audio-visual alarm indication, an instrument can be operated as a stand-alone unit (with additional local alarm signaling as required). Configurable output signal options include the following:
MGS-410, MGS-450, MGS-460 – Digital Output (Modbus RTU signal)
MGS-450, MGS-460 – 3× Relays (high alarm / low alarm / fault)
MGS-450, MGS-460 – 1× Analog Output (4 to 20 mA, 0 to 5 V, 0 to 10 V, 1 to 5 V, 2 to 10 V)
2.6User Interface
MGS-400 gas detectors allow users to interface directly with the instrument via the following:
Bluetooth® Communication (MGS-400 App allows users to configure the gas detector, initiate calibration, bump test / functional test modes and view status information.)
Tactile / Magnetic Switches (A non-intrusive magnetic wand allows users to initiate calibration of the device.)
2.7Technical Specifications
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Specifications |
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Normal operation:............................................. |
4 to 20 mA |
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Drift below zero:..................................................... |
3.8 mA |
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Signals to |
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Measuring range exceeded:................................. |
20.5 mA |
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Central |
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Analog Current |
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Controller |
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Instrument fault:.......................................... |
........ ≤ 1.2 mA |
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Fault on analog interface:.................................... |
> 21 mA |
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Offline mode/Maintenance signal:....... |
3 mA steady signal |
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1100-2294 Rev 1 |
10 |
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0 to 5V; 1 to 5V; 0 to 10V; 2 to 10V (selectable). During |
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Analog Voltage |
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fault condition, 1 to 5V and 2 to 10V outputs are 0V. |
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Baud rate:............................. |
9,600 or 19,200 (selectable) |
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Start bits:......................................................................... |
1 |
Signals to |
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Data bits:......................................................................... |
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Central |
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Controller |
Modbus RTU over |
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Parity:.................................. |
None, odd, even (selectable) |
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RS-485 |
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Stop bits:............................................... |
1 or 2 (selectable) |
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Retry time:.................... |
500 ms, min time between retries |
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End of message:............................... |
Silent 3.5 characters |
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Operating Voltage |
19.5 to 28.5 VDC; 24 VAC ± 20%, 50/60 Hz |
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Inrush Current |
1.5 A |
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Operating Current, |
MGS-410: 2W, 85mA @ 24VDC |
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Max. |
MGS-450/60: 4W, 170mA @ 24VDC |
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Power Supply |
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and Relays |
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3 SPDT |
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Relay Rating |
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1A at 30 VAC/VDC, resistive load |
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Audible Alarm |
Internal Buzzer ≥72 dB at 4” (10 cm) |
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Alarm Delay |
0 to 15 minutes (selectable) |
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Power and Analog |
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2-core shielded cable, 16 to 20 AWG (0.5 to 1.5 mm2) |
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Signal |
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3-core, 2 twisted pair + ground, shielded cable with 120 Ω |
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Modbus Network |
characteristic impedance, 16 to 24 AWG (0.2 to 1.5 |
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mm2). |
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M20, 10-14mm cable outer diameter |
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Cable Gland |
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M16, 4-8mm cable outer diameter |
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1100-2294 Rev 1 |
11 |
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Enclosure |
IP41 / IP66 |
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Protection |
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MGS-410: 5.1×5.1×2.7” (130×130×68 mm) |
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Enclosure Size |
MGS-450 IP41: 6.5× 6.5×3.0” (165×165×77 mm) |
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MGS-450 IP66: 6.5×6.5×3.4” (165×165×87 mm) |
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(W×H×D) (Approx.) |
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Specifications |
MGS-460: 6.5×6.5×3.4” (165×165×87 mm) |
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MGS-460 Remote: 4.5× 5.4×2.7” (115×136×68 mm) |
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MGS-410: 9.2oz (260 g) |
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Weight (Approx.) |
MGS-450: 1lb, 1oz (480 g) |
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MGS-460: 1lb, 11.7oz (758 g) |
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Temperature |
- 40 to 120 ºF (-40 to 50 ºC) |
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Storage |
- 5 to 100 ºF (-20 to 40 ºC) |
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Temperature |
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Humidity |
5 to 90 %RH, non-condensing |
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(15 to 90 %RH, non-condensing, EC sensors excl. O2) |
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Environmental |
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Pressure |
23.6 to 32.5 inch Hg / 800 to 1,100 mbar |
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Elevation |
0 to 10,000 ft. (3,050 m) altitude |
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Sensors |
See Section 6.3 for sensor specifications. |
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Influences |
For influences on the measurement performance and |
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restrictions of a particular sensor see sensor data sheet. |
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Agency |
CE, EN 50270:2015, UL/CSA/IEC/EN 61010-1 |
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Approvals |
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1100-2294 Rev 1 |
12 |
2.8 Components
CAUTION: This product uses semiconductors which can be damaged by electrostatic discharge (ESD). When handling the printed circuit boards (PCBs), observe proper ESD precautions so that the electronics are not damaged.
2.8.1 MGS-410 Components
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Component Description |
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Component Description |
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1 |
M16 Cable Glands (×4) |
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Ribbon Cable Connection (To Sensor) |
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2 |
Rubber Gasket |
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Power Connection (In) |
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3 |
Digital Connection / Modbus (In) |
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Internal Alarm Buzzer |
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Digital Connection / Modbus (Out) |
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Power Connection (Out) |
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Tactile Switch #1 |
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Magnetic Switch #1 |
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Tactile Switch #2 |
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Magnetic Switch #2 |
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1100-2294 Rev 1 |
13 |
2.8.2 MGS-450 Components
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Component Description |
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Component Description |
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1 |
M16 Cable Glands (×6) |
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Tactile Switch #2 |
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2 |
Rubber Gasket (IP66 Version Only) |
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Relay 3 Connection (FAULT) |
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3 |
Internal Alarm Buzzer |
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Relay 2 Connection (HIGH) |
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4 |
Power Connections (×2) |
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Relay 1 Connection (LOW) |
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5 |
Digital Connection (Modbus) |
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Magnetic Switch #1 |
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6 |
Analog Connection |
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Magnetic Switch #2 |
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7 |
Tactile Switch #1 |
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M20 Cable Glands (×2) |
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8 |
Ribbon Cable Connection (To Sensor) |
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1100-2294 Rev 1 |
14 |
2.8.3 MGS-460 Components
#Component Description
1 |
M16 Cable Glands (×6) |
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2 |
Rubber Gasket (×2) |
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3 |
Internal Alarm Buzzer |
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4 |
Power Connections (×2) |
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5 |
Digital Connection (Modbus) |
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6 |
Analog Connection |
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7 |
Tactile Switch #1 |
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8 |
RJ45 Connects (×2) |
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Component Description |
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9 |
Tactile Switch #2 |
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10 |
Relay 3 Connection (FAULT) |
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Relay 2 Connection (HIGH) |
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Relay 1 Connection (LOW) |
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Magnetic Switch #1 |
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Magnetic Switch #2 |
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M20 Cable Glands (×3) |
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Ribbon Cable Connection (To Sensor) |
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1100-2294 Rev 1 |
15 |
3. Installation
IMPORTANT: The manufacturer of this product requires that a bump test or calibration be performed following installation to verify instrument functionality.
3.1 General Information
Installation site selection is critical to ensuring system performance and effectiveness. Strict compliance and considerable thought must be given to every detail of the installation process, including, but not limited to the following:
●Regulations as well as local, state, and national codes that govern the installation of gas monitoring equipment
●Electrical codes that govern the routing and connection of electrical power and signal cables to gas monitoring equipment
●The full range of environmental conditions to which the instruments will be exposed
●The physical characteristics of the gas or vapor to be detected
●The specifics of the application (e.g., possible leaks, air movement/draft, etc.)
●The degree of accessibility required for maintenance purposes
●The types of optional equipment and accessories that will be used with the system
●Any limiting factors or regulations that would affect system performance or installations
●Wiring details, including:
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MGS-410 |
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MGS-450 |
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MGS-460 |
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M16 Cable Glands |
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(4-8mm cable diameter) |
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M20 Cable Glands |
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(10-14mm cable diameter) |
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●Secondary circuit must be supplied from an isolating source
●The wiring for the relays must be selected and fused according to the rated voltages, currents, and environmental conditions
●If stranded conductors are used, a ferrule should be used
●To comply with RFI immunity regulations, it is necessary to ground the shield of the communications cable at the PLC, GDA controller, front-end controller, or Building Management System (e.g., the chassis, the ground bus-bar, etc.).
1100-2294 Rev 1 |
16 |
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