Honeywell Midas-M User manual

MIDAS-M MULTIGAS TRANSMITTER
Fixed Single Point Extracted
Multi Gas Transmitter
3016M5001 Rev A
ECO HAA190080

Table Of Contents
7
7
7
8
9
10
11
11
15
Introduction
About Us
Product Description
Overview
User Interface
Default Configuration
Installation
Mount the Transmitter Device
Mount the Relay Module
Sample and Exhausting Tubing Calculations 17
18
18
19
23
26
28
29
29
30
32
In-Line Filters
Local Detector Option
Electrical Installation
Electrical Connection
Wiring The Relay Module
Mount The Sensor Cartridge
Device & Web Operations
Comissioning
Monitoring Mode
Review Information
Setup Operations 34
CHAPTER 1 —
CHAPTER 2 —
CHAPTER 3 —

36
38
Test Mode
Calibration Mode
Calibration & Bump Test 39
Bump Test 40
Internal Web Server 41
Physical Network Components 41
Internet Settings 41
Running the Web Server 42
65
66
69
69
70
74
Maintenance
System Leak Check
Additional Information
EU Directive 2012/19/EU: Waste Electrical and Electronic
Equipment (WEEE)
Troubleshooting and Fault Diagnosis
Specifications
Ordering 77
Transmitter 77
Cartridge 77
Smart Sensor 78
Accesories 78
82
84
85
86
Gas Table
Combination Index
Reflex
A Modbus/TCP Interface
Security 99
CHAPTER 4 —
CHAPTER 5 —

Modbus TCP 99
DOS attack 99
101
103
Install Web Server Certificate in Google Chrome
Install Web Server Certificate in MS Browsers
Warranty 105
Sensor Cartridge Warranty 106
107Contact Us

CHAPTER
1Introduction
Learn what you need to know about the Honeywell Midas®-M Gas Detector before operating.
About Us
Honeywell Analytics: the global leader in gas detection
While you build a better world, we’re building smarter safety.
For nearly 50 years, Honeywell Analytics has been protecting people who put their lives on the line
every day. It takes a special level of drive and dedication to work in hostile environments, and we
believe your workers deserve the same kind of commitment from us when it comes to securing
their health and safety.
Right from the start, our founders were determined to find better ways to design, build and
manufacture reliable gas detection solutions. Through advanced technology and pure industry
know-how, Honeywell Analytics continues to improve and evolve our products. Today, we’re proud
to partner with customers worldwide who share our vision of vigilance and rely on us to help them
protect what matters most.
From custom-designed solutions to unmatched training and support, Honeywell Analytics is
simply the smartest choice when you demand the best in safety.
Product Description
The Honeywell Midas®-M is a Fixed Extractive Single Point with 4-in-1 Multi Gas Detector that
draws a sample locally or from a remote point to a sensor cartridge that is located inside the
detector’s chassis. A wide range of toxic, flammable and oxygen gas sensor cartridges are
available that enable detection of gases used or generated in the Semiconductor and other
manufacturing industries.
Midas-M is shipped from the factory with the security function disabled. We strongly recommend
enabling this function for safe use of the detector. To enable it, select Set up > Security and type an
8 character password.
Midas-M is wall mounted and displays gas concentration, alarm, fault and status information via
its backlit LCD and LEDs. A simple to use 4-button keypad located under the display provides the
facility to set-up, review, operate and make changes to the detector’s configuration.
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Midas-M has flexible power and communications capabilities built in as standard. These include
3 on board relays, 0-21 mA analog output, Modbus/TCP outputs for signal and service
connectivity as well as Power over Ethernet (PoE) connection that enables a single Ethernet
connection to be made for all power, control and communication requirements.
Overview
The Midas-M gas detector comprises of 4 parts: the main module, the mounting bracket
assembly, the sensor cartridge and the pump module.
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User Interface
Detector's User Interface overview.
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Default Configuration
The Midas-M gas detector is factory-configured.
NOTE: Oxygen levels are 20.9% v/v in a normal atmosphere, equivalent to 17.3 mA. Use caution
when integrating an oxygen Midas-M unit using the 4-20 mA output since fault, inhibit, and no
power conditions are below 4 mA and, by default, an oxygen depletion alarm is triggered on a
falling alarm (default 19.5% v/v). In that case, Honeywell Analytics recommends one of the
following:
• Use Modbus TCP digital communications
• Use discrete relay inputs instead of a 4-20 mA signal to trigger gas alarms
• Program the control system of the 4-20 mA input with logic and a delay (e.g., 1 second) before
triggering an alarm to determine if the 4-20 mA output is at one of the 0-4 mA conditions
described above.
Contact Honeywell Analytics for further information.
Toxic Gas flammable gas1oxygen
Full Scale (FS) Typically 4 x Threshold
Limit Value (TLV)
100% Lower Explosive
Limit (LEL)
25% Volume (v/v)
Alarm 1
(Relay 1)
1/2 TLV 10% LEL 23.5% v/v (Rising)
Normally de-energized, energizes on alarm.
Alarm 2
(Relay 2)
TLV 20% LEL 19.5% v/v (Falling)
Normally de-energized, energizes on alarm.
Fault
(Relay 3)
Normally energizes, de-energized on fault.
Latching Latching. Alarm and fault relays DO NOT automatically reset when reading
falls below alarm thresholds. Relays MUST be manually reset.
Passcode No Passcode set.
Address 169.254.60.47 subnet mask 255.255.255.0
Current source with:
1.0 mA Fault
2.0 mA Inhibit
3.0 mA Maintenance Fault
4.0 to 20.0 mA Gas reading (normal operation)
21.0 mA Over range
1Not yet released
Factory Default Configuration
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CHAPTER
2Installation
For ease of installation Midas-M has been designed to allow the installation of the mounting
bracket assembly and main module separately from the other parts of the detector. The detector
location and hard wiring can therefore be completed before fitting the detector’s main module
and sensor cartridge.
WARNING
Midas-M is designed for installation and use in indoor safe area non-explosive
atmospheres. Installation must be in accordance with the recognized standards of the
appropriate authority in the country concerned. Prior to carrying out any installation
ensure local regulations and site procedures are followed.
Ensure the connection of all modules (e,g pump, and cartridge module) with the main
module. Otherwise, Midas-M can have flow leakage or malfunction.
Mount the Transmitter Device
The Midas-M gas detector has an integral mounting bracket assembly that is easily mounted to a
suitable vertical surface such as a wall, tool housing, mounting plate on a pole etc.
Midas-M outline dimensions
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NOTE
Notice the space required to install the instrument, open the door, push in/pull out
modules, and tubing.
Mounting procedure
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1. the door.
2. Un-tight the two screws.
3. Carefully pull the main module forward.
4. Drill two holes 2.2 in (55.9 mm) Use 2 x M4 Screws or equivalent for mounting
(head size 7-11 mm).
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NOTE
This drill template is not to scale.
5. a. Partially screw the fixings into the mounting surface.
b. Place the mounting bracket assembly over the screws, so they pass
through the mounting holes and then slide down to locate in the slots.
c. Tighten the screws to secure the mounting bracket assembly.
6. a. Align the rounded corner at the lower of the main module with the similar
rounded corner at the bottom of the mounting bracket assembly
b. Slide the main module backward while pushing the main module up after
connecting with a mounting bracket so that the PCB connector and tubes
engage simultaneously.
7. Ensure the PCB, connector, and tubes are fully engaged by firmly pushing the
main module horizontally backward on the mounting bracket assembly. DO
NOT PUSH ON THE LCD AS THIS MAY DAMAGE IT.
8. a. Align the two fixing screws located at the bottom of the module with the
screw threads on the mounting bracket assembly.
b. Tighten the screws to secure the module to the mounting bracket
assembly.
9. Remove the internal packing card securing the pump. Failure to remove this
packing will result in damage to the Midas-M detector.
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Mount the Relay Module
The Relay Module has an integral mounting bracket assembly that is easily mounted to a
suitable vertical surface such as a wall, tool housing, mounting plate on a pole etc.
1. Pull out the four screws and remove the plate cover.
2. a. Partially screw the fixings into the mounting surface.
b. Place the Relay module over the screws, so they pass through the holes to locate in
the slots.
c. Tighten the screws to fix the Relay Module to the surface.
3. Connect the wire through the cable gland to the terminal block.
4. Place the plate cover in position and screw the four screws you removed in Step 1.
5. Push the mounting bracket assembly horizontally and engage the Relay Module connector.
6. a. Align the screw holes and the slot-boundaries, and tight the machine screws
(3016D0355) provided in packaging.
b. Connect the mounting bracket assembly to the Relay Module.
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Sample and Exhausting Tubing Calculations
Description of flow rate, and tubing vacuum at the inlet and exhaust points,
Description Maximum
Tubing Length, m (ft) 30 (100)
Sample Point Vacuum -25.4 cm H2O (-10 in H2O)
Transport Time (sec), ID 1/8” 125
Transport Time (sec), ID 3/16” 53
Flow rate, cc/min. 600 (Flow is constant) 2
Tubing OD, mm (in) 6.35 (0.25)
Tubing ID, mm (in) 3.18 (0.125)
Inlet sample specifications
1Honeywell Analytics recommends thick-wall tubing (1/8” ID) for best speed of response. Due to
its lower surface area, thick- wall tubing may require less conditioning than thin-wall tubing.
2The flow rate is electronically maintained at approximately 600 cc/min and may vary within
acceptable tolerances.
Tubing lengths vary among gases. See the Gas Chart for recommended lengths.
NOTE
Honeywell Analytics recommends the use of Teflon FEP (Fluorinated Ethylene Polymer)
tubing to assure proper sample transport. The properties of Teflon FEP make it the best
choice for transporting sample toxic gases to instruments when compared with the
properties of other similar tubing materials.
description maximum
Tubing Length, m (ft) 30 (100)
Back Pressure at Exhaust Point 20.3 cm H2O (8 in H2O)
Flow rate, cc/min 600 (Flow is constant)
Outlet sample specifications
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description maximum
Tubing OD, mm (in) 6.35 (0.25)
Tubing ID, mm (in) 4.76 (0.188)
Prepare Tubing
1. Cut the tube squarely and remove any burrs.
2. Mark from end of tube the length of insertion. The insertion lenght of Midas-Mfrom the end
of tube is 15.5 mm.
NOTE
When inserting the tube into the inlet/outlet port of the Midas-M, make sure that it is
inserted up to the marked position.
In-Line Filters
External filters must be used to protect the tubing from contamination. Use particulate filter part
number 780248 for normal gases and 1830-0055 or 1991-0147 for corrosive gases. Replace
the filter every 3 months. Refer to the Gases Table for specific gases.
Local Detector Option
The Midas-M gas detector can also be used to monitor for gas at the location of the detector. To
do this, an inline filter is simply connected to the sensor cartridge gas inlet port. The external
dust filter part number is 780248 for normal gases and 1830-0055 or 1991-0147 for corrosive
gases. The area around the detector is then being monitored as opposed to a sample being
drawn from a remote location.
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Electrical Installation
Access for the electrical wires to the terminal module is made via the PG16 cable gland located
at the bottom of the mounting bracket assembly. The cable gland can be removed and replaced
with a suitable conduit fitting if required.
Typical wire routing
The terminals used are suitable for conductors of 24 to 14 AWG (0.5 to 1.8mm Dia.). We
recommend using the 16 AWG (1.5 mm Dia.) conductors.
If Power over Ethernet (PoE) is used to power the device, then 24 VDC power must not also be
connected to the device, (or conversely, if 24 VDC is used to power the Midas-M, then electrical
power via the Ethernet port must not be applied). Failure to observe this requirement may cause
damage to the gas detection system and will not be covered by the standard warranty.
When connecting the wires ensure that the power switch is in the off position.
NOTE
Earthing Requirements: If the Midas-M unit’s metal chassis is not connected directly to a
metal surface for earthing purposes, an additional earth wire will be required. Connect a
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wire via the PG16 gland to the dedicated earth tag (screw terminal) located on the bottom
bracket and connect the other end of the wire to a dedicated external earthing point. If
Power over Ethernet (PoE) power supply is being used, shielded CAT5 Ethernet cable is
recommended. Please ensure that your wiring avoids earth ground loops that may affect
the performance of your equipment.
NOTE
Instrument grounding is required to ensure stable performance and to limit the effects of
radiofrequency interference before installation.
The following diagram shows the terminal module layout and terminal identification as well as
the jumper locations.
Transmitter Terminals
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