MONNIT MNS2-9-W2S-DC-CF-L01 IECEX Wireless Dry Contact Sensor User Manual

MONNIT MNS2-9-W2S-DC-CF-L01 IECEX Wireless Dry Contact Sensor

General Description

It is of the utmost importance that qualified personnel, as defined below, read the following safety instructions before installing, operating, servicing, maintaining, and decommissioning the Monnit ALTA® Dry Contact Sensor MNS2-f-W2S-PS-300, where ‘f’ is a wildcard for: 9-900 MHz, 8-868 MHz, 4 -433 MHz, and 94- 940 MHz (“Dry Contact Sensor” or “Sensor”). Failure to do so, and meet the requirements set forth herein, can result in death and serious injury to one or even many individuals, and can result in significant property damage. These safety instructions must be kept on file and always referred to when engaging in activity related to the Dry Contact Sensor. Throughout the body of these safety instructions, the following warning messages may appear to call attention to particular risks, without diminishing the importance, risks, and dangers addressed in other portions of these instructions. These safety instructions are also available for reference at www.monnit.com.

WARNING There are one or more relevant hazardous situations, which, if not avoided, could possibly result in death or serious injury.

CAUTION
There are one or more relevant hazardous situations, which, if not avoided could result in minor to moderate injury.

 Product Information

The IECEx-certified ALTA Dry Contact Sensor has been manufactured in accordance with IEC 60079-0 (2017) and IEC 60079-11 (2011 ).
The Dry Contact Sensor has a one-foot cable with two exposed wire contacts disposed at the end. The housing of the Sensor comprises a base and a lid made of black ABS plastic that are sealed together with four steel screws coated in black phosphate. Additionally, the Sensor is battery-powered and has a single AA-battery coffin for receipt of a single AA RAMWAY ER14505M lithium / thionyl chloride battery. Apart from the battery coffin, the circuitry for the Dry Contact Sensor resides on the underside of the circuit board and within a protective epoxy encapsulant surrounded by the Sensor’s housing. The circuitry includes a radio module within the protective, safety encapsulant with an antenna attached and extending out of the encapsulant and the surrounding housing. The radio module transmits at the following maximum Equivalent, Isometric Radiated Powers for the corresponding frequencies: 50 mW at 900 MHz and 940 MHz; 25 mW at 868 MHz; and 10 mW at 433 MHz, which are well under the threshold power of 6W for Group IIA gases.

The Sensor is supplied with a single AA RAMWAY ER14505M battery with a capacity of approximately 2,200 mAh. The AA RAMWAY ER14505M battery is compliant with: (1) Clause 23.2 of IEC 60079-0: 2011 and EN 60079-0: 2012; (2) Clauses 10.4, 10.5.2, 10.5.a, and 10.5.3b of IEC 60079-11 2011 and EN 60079-11: 2012; and (3) Clauses 5 through 9 of EN-60086-4: 2015. As long as the integrity of the battery is maintained, the battery is self-contained and non-reactive. However, care should be taken to prevent thermal, electrical, or mechanical damage, and battery contacts should be protected to prevent premature discharge. Even when the cell is discharged, the battery may present a hazard. The battery should be stored in a clean, dry environment not to exceed 303° K (30°C}, when not in active use within the Sensor.

WARNINGS
The Dry Contact Sensor MUST USE and MUST ONLY use a single AA RAMWAY ER14505M lithium/ thionyl chloride battery. The Sensor has ONLY been certified for use with a single AA RAMWAY ER14505M battery. Use of ANY other battery, or modification of the Sensor to use multiple batteries, and other power source(s) MAY result in sparking and thermal events that could lead to ignition and explosion in the environments for which the Dry Contact Sensor has been otherwise designed to be deployed. Furthermore, use of a single AA RAMWAY ER14505M battery that has been thermally, electrically, or mechanically compromised may also lead to ignition and explosions. As discussed below, the single AA RAMWAY ER14505M lithium/ thionyl chloride battery MUST ONLY be inserted in and removed from the battery coffin of the Dry Contact Sensor outside of any hazardous location and in an area free of potentially explosive dusts or gases.

DO NOT attempt to recharge the RAMWAY ER14505M battery. DO NOT incinerate the battery, place it near heating equipment, expose it to direct sunlight for long periods, or subject the RAMWAY ER14505M battery to temperatures in excess of 343° K (70° C). DO NOT short circuit the RAMWAY ER14505M. DO NOT drop, crush, or puncture the battery. DO NOT immerse the battery in liquids. DO NOT install the RAMWAY ER14505M battery with an incorrect polarity. The battery coffin of the Dry Contact Sensor has a raised plus sign and a raised negative sign to indicate correct polarity.

The two exposed wire contacts MUST NOT be deployed in any location where voltage and current may be injected on the exposed wires or any exposed wires arising from accidental melting of insulation, severing, cutting, or cap removal of the antenna. The exposed contact wires MUST NOT, under any circumstances, be connected to an active switch, or any other circuitry, or circuit elements, that would inject voltage, current, or power. The exposed contact wires are ONLY to be connected, if connected to anything at all, to a passive switch element. The passive switch element MUST NOT contribute an output capacitance of 400 µF or greater and MUST NOT contribute an output inductance of 40 µH or greater. The housing of the Dry Contact Sensor must be maintained within an ambient process temperature between 253° K to 313° K (-20° C to 40° C).

Markings

The Dry Contact Sensor is a product of Monnit® Corporation. All maintenance and repair questions should be addressed to Monnit’s customer service department at 1-801-561-5555. If customer service indicates it to be necessary, products can be shipped to Monnit for repair and maintenance at 3400 South West Temple, South Salt Lake, UT 84115, USA. Mockups of the labeling on the Dry Contact Sensor are shown to the right. The Dry Contact Sensor is marked Ex ib IIA T3 Gb.

1. The first marking, ‘Ex,’ indicates that the Dry Contact Sensor is ex-rated equipment.
2. The next marking, ‘ib’, identifies a protection method of intrinsic safety with a level of protection appropriate for deployment in IECEx Zone 1 areas.
3. The third marking, ‘IIA,’ indicates the group of gases to which the Dry Contact Sensor may be exposed from time to time, such as propane.
4. The ‘T3’ marking is the temperature class and means that the hottest surface temperature on the Dry Contact Sensor will be below 473° K (200°C), when the Dry Contact Sensor is used at an ambient temperature of 313° K (40°C).
5. The ‘Gb’ indicates the Equipment Protection Level of the Dry Contact Sensor and that it is gas explosion protected for the specific conditions indicated by the other markings.

The ‘X’ following the Certification number indicates the necessity of following specific conditions of use set forth below in section 4, titled Specific Conditions of Use, and are referred to on the lid label with the three warnings.

• Do not insert or remove the battery in an explosive atmosphere.
• Potential electrostatic charging hazard (see instructions).
• USE ONLY a single AA RAMWAY ER14505M lithium / thionyl chloride battery.

Installation, Operation, Servicing, Maintenance, and Decommissioning

In preparing the Dry Contact Sensor for installation, mounting, and maintenance, the following instructions and requirements MUST be followed.

WARNINGS
The Dry Contact Sensor must only be installed, operated, serviced, maintained, and decommissioned by qualified personnel. All qualified personnel involved in the aforementioned activities must meet the following requirements.

1. All qualified personnel involved in any of the foregoing activities must also first familiarize themselves with the Dry Contact Sensor, its functionality, and components before attempting to engage in any such activities.
2. All qualified personnel must be trained in hazardous locations and explosion protection generally.
3. All qualified personnel must be trained in the meaning of and appropriate safety precautions for: IECEx Zone 1; intrinsic safety and ib level intrinsic safety; group IIA gases; temperature classifications and the T3 temperature classification; and, protection in areas exposed to potentially explosive gases.
4. All qualified personnel must be familiar with and observe the conditions of use set forth in the Specific Conditions of Use herein below.
5. All qualified personnel must be familiar with and adhere to the requirements in IEC 60079-14 pertaining to installation in hazardous areas and must be familiar with and adhere to the requirements in IEC 60079-17 pertaining to inspection and maintenance in hazardous areas.
6. All qualified personnel must be familiar with and adhere to the relevant laws, regulations, and or other rules promulgated by any legal authorities with jurisdiction where the Dry Contact Sensor is to be installed, operated, serviced, maintained, and decommissioned.

The Dry Contact Sensor must be installed, operated, serviced, maintained, and decommissioned in accordance with the following standards, instructions, and requirements.

1. The Dry Contact Sensor must be installed, operated, serviced, maintained, and decommissioned in accordance with IEC 60079-14 and IEC 60079-17.
2. The Dry Contact Sensor must be installed, operated, serviced, maintained, and decommissioned in accordance with relevant laws, regulations, and other rules promulgated by any legal authorities with jurisdiction where the Dry Contact Sensor is to be installed, operated, serviced, maintained, and decommissioned.
3. The Dry Contact Sensor must be installed, operated, serviced, maintained, and decommissioned in accordance with ALL instructions, guidance, conditions, and requirements appearing in these safety instructions herein below.

ONSITE ASSEMBLING

Whenever the Dry Contact Sensor is located where an explosive atmosphere of gas or dust is, or may potentially be, present, DO NOT touch the surface of the Dry Contact Sensor without first wiping it down with a wet rag to prevent electrostatic discharge. Such electrostatic discharge events result in sparks that can cause ignition of an explosive atmosphere and explosions.

INSTALLATION AND SETUP

To install the Dry Contact Sensor, make sure the Sensor is first located outside of the Zone 1 environment in which it will be deployed, in an environment where there is no possibility of exposure to explosive gases and dust. In this explosive-gas free environment, slide the face top of the Sensor around the axis of the single screw holding the top lid in place to expose the single AA battery coffin within the housing. Remove the battery notice sticker, making sure to take note of the information thereon. Insert the RAMWAY ER14505M battery, provided with the Sensor, in the battery coffin. Make sure that the battery is inserted with the correct polarity as identified by the molded symbol in the battery coffin. A single AA RAMWAY ER14505M lithium/ thionyl chloride battery MUST be used and ONLY the RAMWAY ER14505M battery. Additionally, take note of the sensor ID and security code before closing up the unit. They will be needed to network the device later, as set forth in the User Guide. Slide back the face top so that it covers the cavity of the housing and screw the remaining three black screws in place with a standard screw driver.

Because the Sensor did not go through an impact test, the housing MUST be securely affixed to the surface against which it is deployed, to prevent impact from dropping or falling. When installing the Sensor, qualified personnel MUST follow all applicable rules set forth in IEC 60079-14 and in IEC 60079-17. Before affixing the housing to the surface where it will be deployed, the qualified personnel should wipe clean the surface to which the housing is to be affixed with a wet rag. The qualified personnel should then affix the housing to the surface by sandwiching the exposed adhesive membrane between the housing and the surface, and applying firm pressure. In the alternative, the qualified personnel may affix the housing to the surface by using screw fasteners screwed through the eyelets provided in the two tabs extending from the two shortest sidewalls of the housing. The screw fasteners MUST be suitable for installations in explosive atmospheres. Because of the lack of impact testing on the Sensor and the potential to become dislodged and drop to the ground, it is NOT recommended to mount the Sensor with a magnet.
In determining a surface to which to affix the Sensor, consider again that the Sensor did not go through an impact test. DO NOT affix the Dry Contact Sensor higher than two meters above a surface it would strike in the event of a fall. DO NOT affix the Dry Contact Sensor where it is likely to be bumped by personnel. DO NOT affix the Sensor anywhere moving parts of machinery may strike it.

The Dry Contact Sensor MUST be installed in a location where it will be protected and sheltered from ALL sunlight and other luminaries emitting light at UV wavelengths. Additionally, the housing of the Dry Contact Sensor is made of ABS plastic with two nylon adhesive labels adhering to it, which may present a potential for electrostatic discharge. Do NOT affix the Sensor anywhere where personnel are likely to rub against it. Also, the Dry Contact Sensor MUST be installed 1,000 mm distance from a potential electrostatic source, such as a conveyor belt, moving machinery, pipe, or the like.

ADJUSTMENT AND PARAMETER SETTING

The Dry Contact Sensor is designed to be adjusted and have its parameters set remotely. All firmware updates are also received remotely. Personnel need NOT interact within a hazardous area to perform these functions, with the exception of power cycling the Sensor. To power cycle the Sensor, the instructions in the Repair section below MUST be followed. Please refer to the User Guide.

USE AND SETUP

Again, the Dry Contact Sensor is designed to be used and set up remotely. Please reference to the User Guide. Personnel need NOT interact within a hazardous area to perform these functions, with the exception of power cycling the Sensor. To power cycle the Sensor, the instructions in the Repair section below MUST be followed.

MAINTENANCE

Layers of dust should not be allowed to accumulate on the Dry Contact Sensor. Clean the Sensor regularly. However, DO NOT clean the surfaces of the Sensor with a dry rag. Only clean these surfaces with a wet rag.

REPAIR

Many repairs may be undertaken remotely by adjusting and setting parameters, and updating firmware over the wireless network in which the Dry Contact Sensor is embedded. However, if such attempts are unsuccessful, a determination may be made, with or without the assistance of Monnit customer support, that the Sensor needs to be power cycled, have its battery replaced, be shipped back to Monnit, or decommissioned. To power cycle the Sensor, the battery is removed and reinserted. Before opening the Sensor to power cycle it, qualified personnel MUST wipe the Sensor with a wet rag, and remove the Sensor from any hazardous location where explosive atmospheres of gas or dust are OR may be present. Alternatively, qualified personnel MUST wipe the Sensor with a wet rag and ensure that the area where the Sensor is located is free of potentially explosive dust or gas. DO NOT remove, reinsert, or replace the single AA RAMWAY ER14505M lithium/ thionyl chloride battery where explosive gas or dust is present or potentially present. Qualified personnel can open the Sensor by removing screws in the top lid of the housing. The battery may then be removed from the battery coffin within the housing. To power cycle, qualified personnel then wait at least ten seconds before reinserting the single AA RAMWAY ER14505M battery.

CAUTION TAKING OUT OF SERVICE AND DISMANTLING:
When a determination is made to decommission the Dry Contact Sensor, qualified personnel MUST wipe the Sensor with a wet rag and remove the Sensor from the hazardous location where explosive atmospheres of gas or dust are present, or are potentially present. You should comply with all local laws, regulations, directives, and the like regarding the disposal of electronic equipment and lithium batteries.

Specific Conditions of Use

The IECEx certificate number for the Dry Contact Sensor carries an ‘X’ at the end. The following comprises a list of reasons why the Dry Contact Sensor is marked with this ‘X’ behind the certificate number, together with specific precautions that need to be observed as prerequisite conditions of use:

WARNINGS

POTENTIAL ELECTROSTATIC CHARGING HAZARD
The Sensor’s housing is ABS plastic with two nylon adhesive labels adhered. Electrostatic charging of plastic components can lead to electrostatic discharge events, sparking, and explosions. Whenever the Dry Contact Sensor is in a hazardous location where an explosive atmosphere of gas or dust is, or may potentially be, present, the surface of the Dry Contact Sensor must first be wiped with a wet rag before touching the Sensor to prevent electrostatic discharge. Avoid friction on the surfaces of the Sensor. Keep ambient relative humidity above 25%. Only clean these surfaces with a wet rag. Do NOT dry clean the surfaces. The Dry Contact Sensor MUST NOT be used in high-charge generating processes, such as in the presence of mechanical friction, in the presence of separation processes, or mounted in a pneumatic conveying flow. If there is a potential electrostatic source with which a potential difference, relative to the Sensor, of around 30 kV or above may be created, an electrostatic expert MUST be called to evaluate the electrostatic risk and the distance from the electrostatic source to the Sensor.

USE ONLY RAMWAY ER14505M BATTERIES
A single AA RAMWAY ER14505M lithium/ thionyl chloride battery is the ONLY battery that can be used with the Dry Contact Sensor. Any other battery, or combinations of batteries, may result in a thermal ignition or a spark ignition event causing an explosion.

DO NOT REPLACE THE BATTERY WHEN AN EXPLOSIVE ATMOSPHERE IS PRESENT
The Dry Contact Sensor MUST NOT be opened and the single AA RAMWAY ER14505M lithium/ thionyl chloride battery MUST NOT be removed, reinserted, or replaced when an explosive atmosphere, comprised of either gas or dust, is either present or potentially present. Qualified personnel MUST EITHER remove the Sensor from a hazardous location where an explosive atmosphere is either present or potentially present, OR the qualified personnel MUST clear the area where the Dry Contact Sensor is located of any explosive atmosphere and ensure its absence. The exposed contact wires MUST ONLY be connected to a PASSIVE SWITCH. The passive switch MUST HAVE an output capacitance of less than 400 1,1F and MUST HAVE an output inductance of less than 40 1,1H.

Change Log

2021/01/04

| O r igina l re l ease.
| | 2021/04/27| ****

T ypographical changes.

2| R. Simmons
3| R. Simmons| 2021/04/29| ****

Label graphics updated. Wire contact limit label is updated to reflect the additional warning.

4| R.Simmons| 2021/04/30| ****

Updated product picture on cover.

5| R.Simmons| ****

2021/05/11

| ****

Updated the warnings on page 3 and cover image, pages 2 and 4.

6| S. Pr esto n| ****

2021 /05/12

| ****

Changed maximum surface temperature to 473°K (200°C).

7| K. Detro| 2022/03/17| ****

Branding and color scheme updates for images.Various grammar and punctuation edits throughout.

8| K. Detro| ****

2022/03/23

| ****

Updated images to reflect new label.

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