CXT2 Explosion Proof Transmitter

For monitoring: Ammonia, Carbon monoxide, Nitrogen dioxide, Oxygen, Hydrogen chloride, Hydrogen sulphide, Sulfur dioxide, Methane, Propane, Hydrogen, Acetylene, Butane, Ethanol, Heptane, Hexane, Isopropyl alcohol, Toluene, Pentane, Ethylene, Diesel fuel vapour

Reliable, accurate monitoring of toxic or combustible gases in potentially explosive and harsh environments, including hazardous-rated areas.

Applications

Industrial / Commercial Buildings
Onshore Oil & Gas Terminals
Utilities
Power Plants
Refineries
Chemical Plants
Deep Freezer Rooms
Chiller Rooms
Production Facilities
Extraction Facilities
and many more...

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Key Features

Single channel, internal or remote
Remote sensor mount up to 4,000 ft / 1,219 m
4 - 20 mA analog or Modbus® digital outputs
Three 5A @ 30 VDC or 240 VAC relays (available with digital internal sensor models)
Large graphic LCD display for real time monitoring that changes colour with channel status
Menu driven magnetic keypad for user configurations
Displays values in bar graphs or 30 minute onboard data trends
Security menu with authorization code access to lock critical parameters
Optional heated sensors and electronics for low temperature operation

Description

The CXT2 Explosion Proof transmitter is a single channel transmitter that reliably and accurately monitors toxic, oxygen, combustible, VOC or CO2 gas concentrations in potentially explosive and harsh environments, including classified hazardous rated areas. It can be connected to a controller (FCS), a control panel or a BAS / BMS / DDC system.

The colour, backlit LCD display changes with alarm status. Navigation through the menu is driven by a magnetic keypad and the user can change alarm set points, instrument configurations and enter into maintenance mode for non-intrusive calibration without opening the enclosure. The security menu allows entry of an authorization code to lock critical parameters.

It features non-volatile memory to store historical monitoring and calibration data and the real-time clock and calendar flag all alarm and calibration events. The CXT2 has the latest Smart Sensor technology and provides sensor life indications and smarter gas detection with simplified solutions and easy calibration. Optional features include an internal heater for low temperature applications.

Specifications

Target Gas

Electrochemical Sensors (internal)

Ammonia (NH3), Carbon monoxide (CO), Chlorine (CL2), Hydrogen (H2), Hydrogen chloride, Hydrogen sulphide (H2S), Nitrogen dioxide (NO2), Oxygen (O2), Sulphur dioxide (SO2)

Infrared Sensors (internal)

Carbon dioxide (CO2), Butane (C4H10), Ethanol (C2H6O), Hexane (C6H14), Toluene (C7H8), Methane (CH4), Propane (C3H8)

Catalytic Sensors (internal or remote)

Acetylene (C2H2), Butane (C4H10), Ethylene (C2H4), Hydrogen (H2), Methane (CH4), Propane (C3H8), Pentane (C5H12)

PID Sensors (internal)

Acetaldehyde (C2H4O), Benzene (C6H6), Ethyl Alcohol (C2H6O), Isobutylene (C4H8), other gases may be available upon request

Mechanical

Enclosure

Durable cast aluminum explosion proof, IP65 or IP66 with splash guard installed
Division 1 & 2, Class 1, Groups A, B, C, D

Weight

2.18 kg / 4.8 lbs

Size

12.7 cm x 12.7 cm / 5.0 “ x 5.0”

User Interface

Display

5.4 x 3.1 cm / 2.1 x 1.2 in, 64x128 pixels
Backlit, LCD graphic display for gas readings, 30 minute trends or bar graph, channel status backlit colour changes

Front Panel

Magnetic touch pads, LED indicator lights for RX and TX communication status

Security Mode

Locks out critical parameters, offers password protection

Memory

Non-volatile E2 memory retains configuration values on power outages

Calibration

Non-intrusive calibration and menu navigation with magnetic wand (p/n: CET-MW)

Input/Output

Analog Output

Analog - 4-20 mA (3-wire 4-20 mA current source 750 ohms max with nominal 24VDC power supply)

Digital Output

Digital - Modbus® RS-485 master/slave ports

Relay

Three programmable Form C (SPDT) relays rated for 5 amp at 30 VDC or 240 VAC resistive alarm relays (optional for CXT2-D models only)

Electrical

Power Requirement

10 - 30 VDC, 250 mA @ 24 VDC, 6.5 watts with relay board (all relays energized)

Power Consumption

Relays / RS485 Modbus Option Board: 40 mA per relay (120 mA total with all 3 energized); RS-485 use adds 20 mA

Wiring

Digital: 4-conductor, 12 AWG stranded, shielded network wiring (daisy-chain)

Analog: 3-conductor, 16 AWG stranded, shielded

Wire Gauge

Digital 4-conductor 2 x 12 AWG + 2 X 24 AWG (Belden 9841 or equivalent)

Environmental

Operating Temperature

-40°C to 60°C (-40°F to 140°F)

With optional Arctic Heater Smart Sensors operates down to -55°C (-67°F)

Operating Humidity

5 - 90% RH non-condensing

Certifications

Conforms to

Class 1, Div, 1, Groups A, B, C, D; Class 1, Zone 1, Group IIC, T4
Class 1, Div, 2, Groups A, B, C, D; Class 1, Zone 2, Group IIC, T4

Models with electrochemical sensor types CL2, NH3 and NO2 are Class 1, Div 2 and come with a splash guard.

RoHS compliant circuit boards

Hazardous Area

T Class Rating

Temperature Code T4

Product Codes

CXT2-A-NH3-S

Electrochemical ammonia (NH3) sensor (0 - 500 ppm range), LCD display, LED indicator, three-wire power, 4 - 20 mA analog output, 10 - 30 VDC, aluminum Class 1 / Div 2 / Gr. A, B, C, D enclosure, comes with splash guard

CXT2-A-CO

Electrochemical carbon monoxide (CO) sensor (0 - 1,000 ppm range), LCD display, LED indicator, three-wire power, 4 - 20 mA analog output, 10 - 30 VDC, aluminum Class 1 / Div 1 / Gr. A, B, C, D enclosure

CXT2-A-CL2-S

Electrochemical chlorine (CL2) sensor (0 - 10 ppm range), LCD display, LED indicator, three-wire power, 4 - 20 mA analog output, 10 - 30 VDC, aluminum enclosure, Area Classification Division 2 Non-Incendive, comes with splash guard

CXT2-A-H2

Electrochemical hydrogen (H2) sensor (0 - 2,000 ppm range), LCD display, LED indicator, three-wire power, 4 - 20 mA analog output, 10 - 30 VDC, aluminum Class 1 / Div 1 / Gr. A, B, C, D enclosure

CXT2-A-HCL

Electrochemical hydrogen chloride (HCL) sensor (0 - 30 ppm range), LCD display, LED indicator, three-wire power, 4 - 20 mA analog output, 10 - 30 VDC, aluminum Class 1 / Div 1 / Gr. A, B, C, D enclosure

CXT2-A-H2S

Electrochemical hydrogen sulphide (H2S) sensor (0 - 500 ppm range), LCD display, LED indicator, three-wire power, 4 - 20 mA analog output, 10 - 30 VDC, aluminum Class 1 / Div 1 / Gr. A, B, C, D enclosure

CXT2-A-NO2-S

Electrochemical nitrogen dioxide (NO2) sensor (0 - 100 ppm range), LCD display, LED indicator, three-wire power, 4 - 20 mA analog output, 10 - 30 VDC, aluminum Class 1 / Div 2 / Gr. A, B, C, D enclosure, comes with splash guard

CXT2-A-O2

Electrochemical oxygen (O2) sensor (0 - 25% volume range), LCD display, LED indicator, three-wire power, 4 - 20 mA analog output, 10 - 30 VDC, aluminum Class 1 / Div 1 / Gr. A, B, C, D enclosure

CXT2-A-SO2

Electrochemical sulphur dioxide (SO2) sensor (0 - 100 ppm range), LCD display, LED indicator, three-wire power, 4 - 20 mA analog output, 10 - 30 VDC, aluminum Class 1 / Div 1 / Gr. A, B, C, D enclosure

CXT2-A-IC2H6O

Infrared ethanol or Dimethyl ether (C2H6O) sensor (0 - 100% LEL range), specify target gas at time of order, LCD display, LED indicator, three-wire power, 4 - 20 mA analog output, 10 - 30 VDC, aluminum Class 1 / Div 1 / Gr. A, B, C, D enclosure

CXT2-A-ICO2

Infrared carbon dioxide (CO2) sensor (0 - 5% volume range), LCD display, LED indicator, three-wire power, 4 - 20 mA analog output, 10 - 30 VDC, aluminum Class 1 / Div 1 / Gr. A, B, C, D enclosure

CXT2-A-IC4H10

Infrared butane (C4H10) sensor (0 - 100% LEL range), LCD display, LED indicator, three-wire power, 4 - 20 mA analog output, 10 - 30 VDC, aluminum Class 1 / Div 1 / Gr. A, B, C, D enclosure

CXT2-A-IC6H14

Infrared hexane (C6H14) sensor (0 - 100% LEL range), LCD display, LED indicator, three-wire power, 4 - 20 mA analog output, 10 - 30 VDC, aluminum Class 1 / Div 1 / Gr. A, B, C, D enclosure

CXT2-A-ICH4

Infrared methane (CH4) sensor (0 - 100% LEL range), LCD display, LED indicator, three-wire power, 4 - 20 mA analog output, 10 - 30 VDC, aluminum Class 1 / Div 1 / Gr. A, B, C, D enclosure

CXT2-A-IC3H6

Infrared propylene (C3H6) sensor (0 - 100% LEL range), LCD display, LED indicator, three-wire power, 4 - 20 mA analog output, 10 - 30 VDC, aluminum Class 1 / Div 1 / Gr. A, B, C, D enclosure

CXT2-A-IC3H8

Infrared propane (C3H8) sensor (0 - 100% LEL range), LCD display, LED indicator, three-wire power, 4 - 20 mA analog output, 10 - 30 VDC, aluminum Class 1 / Div 1 / Gr. A, B, C, D enclosure

CXT2-A-IC7H8

Infrared toluene (C7H8) sensor (0 - 100% LEL range), LCD display, LED indicator, three-wire power, 4 - 20 mA analog output, 10 - 30 VDC, aluminum Class 1 / Div 1 / Gr. A, B, C, D enclosure

CXT2-A-IDFV-S

Infrared Diesel Fuel Vapour sensor (0 - 100% LEL range), LCD display, LED indicator, three-wire power, 4 - 20 mA analog output, 10 - 30 VDC, aluminum Class 1 / Div 1 / Gr. A, B, C, D enclosure, comes with splash guard

CXT2-A-CC2H2

Catalytic acetylene (C2H2) sensor (0 - 100% LEL range), LCD display, LED indicator, three-wire power, 4 - 20 mA analog output, 10 - 30 VDC, aluminum Class 1 / Div 1 / Gr. A, B, C, D enclosure

CXT2-A-CC4H10

Catalytic butane (C4H10) sensor (0 - 100% LEL range), LCD display, LED indicator, three-wire power, 4 - 20 mA analog output, 10 - 30 VDC, aluminum Class 1 / Div 1 / Gr. A, B, C, D enclosure

CXT2-A-CC2H4

Catalytic ethylene (C2H4) sensor (0 - 100% LEL range), LCD display, LED indicator, three-wire power, 4 - 20 mA analog output, 10 - 30 VDC, aluminum Class 1 / Div 1 / Gr. A, B, C, D enclosure

CXT2-A-CC2H6O

Catalytic ethanol or Dimethyl ether (C2H6O) sensor (0 - 100% LEL range), specify target gas at time of order, LCD display, LED indicator, three-wire power, 4 - 20 mA analog output, 10 - 30 VDC, aluminum Class 1 / Div 1 / Gr. A, B, C, D enclosure

CXT2-A-CH2

Catalytic hydrogen (H2) sensor (0 - 100% LEL range), LCD display, LED indicator, three-wire power, 4 - 20 mA analog output, 10 - 30 VDC, aluminum Class 1 / Div 1 / Gr. A, B, C, D enclosure

CXT2-A-CCH4

Catalytic methane (CH4) sensor (0 - 100% LEL range), LCD display, LED indicator, three-wire power, 4 - 20 mA analog output, 10 - 30 VDC, aluminum Class 1 / Div 1 / Gr. A, B, C, D enclosure

CXT2-A-CC5H12

Catalytic pentane (C5H12) sensor (0 - 100% LEL range), LCD display, LED indicator, three-wire power, 4 - 20 mA analog output, 10 - 30 VDC, aluminum Class 1 / Div 1 / Gr. A, B, C, D enclosure

CXT2-A-CC7H16

Catalytic heptane (C7H16) sensor (0 - 100% LEL range), LCD display, LED indicator, three-wire power, 4 - 20 mA analog output, 10 - 30 VDC, aluminum Class 1 / Div 1 / Gr. A, B, C, D enclosure

CXT2-A-CC3H8

Catalytic propane (C3H8) sensor (0 - 100% LEL range), LCD display, LED indicator, three-wire power, 4 - 20 mA analog output, 10 - 30 VDC, aluminum Class 1 / Div 1 / Gr. A, B, C, D enclosure

CXT2-A-CC3H8O

Catalytic isopropyl alcohol (C3H8O) sensor (0 - 100% LEL range), LCD display, LED indicator, three-wire power, 4 - 20 mA analog output, 10 - 30 VDC, aluminum Class 1 / Div 1 / Gr. A, B, C, D enclosure

CXT2-A-PID

PID gas sensor, unit of measure is ppm, LCD display, LED indicator, three-wire power, 4 - 20 mA analog output, 10 - 30 VDC, aluminum Class 1 / Div 1 / Gr. A, B, C, D enclosure. Please specify target gas and range at time of order.

CXT2-D-NH3-S

Electrochemical ammonia (NH3) sensor (0 - 500 ppm range), LCD display, LED indicator, three-wire power, Modbus® digital output, three 5A @ 30 VDC or 240 VAC SPDT relays, 10 - 30 VDC, aluminum Class 1 / Div 2 / Gr. A, B, C, D enclosure, comes with splash guard

CXT2-D-CO

Electrochemical carbon monoxide (CO) sensor (0 - 1,000 ppm range), LCD display, LED indicator, three-wire power, Modbus® digital output, three 5A @ 30 VDC or 240 VAC SPDT relays, 10 - 30 VDC, aluminum Class 1 / Div 1 / Gr. A, B, C, D enclosure

CXT2-D-CL2-S

Electrochemical chlorine (CL2) sensor (0 - 10 ppm range), LCD display, LED indicator, three-wire power, Modbus® digital output, three 5A @ 30 VDC or 240 VAC SPDT relays, 10 - 30 VDC, aluminum enclosure, Area Classification Division 2 Non-Incendive, comes with splash guard

CXT2-D-H2

Electrochemical hydrogen (H2) sensor (0 - 2,000 ppm range), LCD display, LED indicator, three-wire power, Modbus® digital output, three 5A @ 30 VDC or 240 VAC SPDT relays, 10 - 30 VDC, aluminum Class 1 / Div 1 / Gr. A, B, C, D enclosure

CXT2-D-HCL

Electrochemical hydrogen chloride (HCL) sensor (0 - 30 ppm range), LCD display, LED indicator, three-wire power, Modbus® digital output, three 5A @ 30 VDC or 240 VAC SPDT relays, 10 - 30 VDC, aluminum Class 1 / Div 1 / Gr. A, B, C, D enclosure

CXT2-D-H2S

Electrochemical hydrogen sulphide (H2S) sensor (0 - 500 ppm range), LCD display, LED indicator, three-wire power, Modbus® digital output, three 5A @ 30 VDC or 240 VAC SPDT relays, 10 - 30 VDC, aluminum Class 1 / Div 1 / Gr. A, B, C, D enclosure

CXT2-D-NO2-S

Electrochemical nitrogen dioxide (NO2) sensor (0 - 100 ppm range), LCD display, LED indicator, three-wire power, Modbus® digital output, three 5A @ 30 VDC or 240 VAC SPDT relays, 10 - 30 VDC, aluminum Class 1 / Div 2 / Gr. A, B, C, D enclosure, comes with a splash guard

CXT2-D-O2

Electrochemical oxygen (O2) sensor (0 - 25% volume range), LCD display, LED indicator, three-wire power, Modbus® digital output, three 5A @ 30 VDC or 240 VAC SPDT relays, 10 - 30 VDC, aluminum Class 1 / Div 1 / Gr. A, B, C, D enclosure

CXT2-D-SO2

Electrochemical sulphur dioxide (SO2) sensor (0 - 100 ppm range), LCD display, LED indicator, three-wire power, Modbus® digital output, three 5A @ 30 VDC or 240 VAC SPDT relays, 10 - 30 VDC, aluminum Class 1 / Div 1 / Gr. A, B, C, D enclosure

CXT2-D-ICO2

Infrared carbon dioxide (CO2) sensor (0 - 5% volume range), LCD display, LED indicator, three-wire power, Modbus® digital output, three 5A @ 30 VDC or 240 VAC SPDT relays, 10 - 30 VDC, aluminum Class 1 / Div 1 / Gr. A, B, C, D enclosure

CXT2-D-IC4H10

Infrared butane (C4H10) sensor (0 - 100% LEL range), LCD display, LED indicator, three-wire power, Modbus® digital output, three 5A @ 30 VDC or 240 VAC SPDT relays, 10 - 30 VDC, aluminum Class 1 / Div 1 / Gr. A, B, C, D enclosure

CXT2-D-IC2H6O

Infrared ethanol or Dimethyl ether (C2H6O) sensor (0 - 100% LEL range), specify target gas at time of order, LCD display, LED indicator, three-wire power, Modbus® digital output, three 5A @ 30 VDC or 240 VAC SPDT relays, 10 - 30 VDC, aluminum Class 1 / Div 1 / Gr. A, B, C, D enclosure

CXT2-D-IC6H14

Infrared hexane (C6H14) sensor (0 - 100% LEL range), LCD display, LED indicator, three-wire power, Modbus® digital output, three 5A @ 30 VDC or 240 VAC SPDT relays, 10 - 30 VDC, aluminum Class 1 / Div 1 / Gr. A, B, C, D enclosure

CXT2-D-ICH4

Infrared methane (CH4) sensor (0 - 100% LEL range), LCD display, LED indicator, three-wire power, Modbus® digital output, three 5A @ 30 VDC or 240 VAC SPDT relays, 10 - 30 VDC, aluminum Class 1 / Div 1 / Gr. A, B, C, D enclosure

CXT2-D-IC3H6

Infrared propylene (C3H6) sensor (0 - 100% LEL range), LCD display, LED indicator, three-wire power, Modbus® digital output, three 5A @ 30 VDC or 240 VAC SPDT relays, 10 - 30 VDC, aluminum Class 1 / Div 1 / Gr. A, B, C, D enclosure

CXT2-D-IC3H8

Infrared propane (C3H8) sensor (0 - 100% LEL range), LCD display, LED indicator, three-wire power, Modbus® digital output, three 5A @ 30 VDC or 240 VAC SPDT relays, 10 - 30 VDC, aluminum Class 1 / Div 1 / Gr. A, B, C, D enclosure

CXT2-D-IC7H8

Infrared toluene (C7H8) sensor (0 - 100% LEL range), LCD display, LED indicator, three-wire power, Modbus® digital output, three 5A @ 30 VDC or 240 VAC SPDT relays, 10 - 30 VDC, aluminum Class 1 / Div 1 / Gr. A, B, C, D enclosure

CXT2-D-IDFV-S

Infrared Diesel Fuel Vapour sensor (0 - 100% LEL range), LCD display, LED indicator, three-wire power, Modbus® digital output, three 5A @ 30 VDC or 240 VAC SPDT relays, 10 - 30 VDC, aluminum Class 1 / Div 1 / Gr. A, B, C, D enclosure, comes with splash guard

CXT2-D-CC2H2

Catalytic acetylene (C2H2) sensor (0 - 100% LEL range), LCD display, LED indicator, three-wire power, Modbus® digital output, three 5A @ 30 VDC or 240 VAC SPDT relays, 10 - 30 VDC, aluminum Class 1 / Div 1 / Gr. A, B, C, D enclosure

CXT2-D-CC4H10

Catalytic butane (C4H10) sensor (0 - 100% LEL range), LCD display, LED indicator, three-wire power, Modbus® digital output, three 5A @ 30 VDC or 240 VAC SPDT relays, 10 - 30 VDC, aluminum Class 1 / Div 1 / Gr. A, B, C, D enclosure

CXT2-D-CC2H4

Catalytic ethylene (C2H4) sensor (0 - 100% LEL range), LCD display, LED indicator, three-wire power, Modbus® digital output, three 5A @ 30 VDC or 240 VAC SPDT relays, 10 - 30 VDC, aluminum Class 1 / Div 1 / Gr. A, B, C, D enclosure

CXT2-D-CC2H6O

Catalytic ethanol or Dimethyl ether (C2H6O) sensor (0 - 100% LEL range), specify target gas at time of order, LCD display, LED indicator, three-wire power, Modbus® digital output, three 5A @ 30 VDC or 240 VAC SPDT relays, 10 - 30 VDC, aluminum Class 1 / Div 1 / Gr. A, B, C, D enclosure

CXT2-D-CH2

Catalytic hydrogen (H2) sensor (0 - 100% LEL range), LCD display, LED indicator, three-wire power, Modbus® digital output, three 5A @ 30 VDC or 240 VAC SPDT relays, 10 - 30 VDC, aluminum Class 1 / Div 1 / Gr. A, B, C, D enclosure

CXT2-D-CCH4

Catalytic methane (CH4) sensor (0 - 100% LEL range), LCD display, LED indicator, three-wire power, Modbus® digital output, three 5A @ 30 VDC or 240 VAC SPDT relays, 10 - 30 VDC, aluminum Class 1 / Div 1 / Gr. A, B, C, D enclosure

CXT2-D-CC5H12

Catalytic pentane (C5H12) sensor (0 - 100% LEL range), LCD display, LED indicator, three-wire power, Modbus® digital output, three 5A @ 30 VDC or 240 VAC SPDT relays, 10 - 30 VDC, aluminum Class 1 / Div 1 / Gr. A, B, C, D enclosure

CXT2-D-CC3H8

Catalytic propane (C3H8) sensor (0 - 100% LEL range), LCD display, LED indicator, three-wire power, Modbus® digital output, three 5A @ 30 VDC or 240 VAC SPDT relays, 10 - 30 VDC, aluminum Class 1 / Div 1 / Gr. A, B, C, D enclosure

CXT2-D-CC3H8O

Catalytic Isopropyl alcohol (C3H8O) sensor (0 - 100% LEL range), LCD display, LED indicator, three-wire power, Modbus® digital output, three 5A @ 30 VDC or 240 VAC SPDT relays, 10 - 30 VDC, aluminum Class 1 / Div 1 / Gr. A, B, C, D enclosure

CXT2-D-PID

PID gas sensor, unit of measure is ppm, LCD display, LED indicator, three-wire power, Modbus digital output, three 5A @ 30 VDC or 240 VAC SPDT relays, 10 - 30 VDC, aluminum Class 1 / Div 1 / Gr. A, B, C, D enclosure. Please specify target gas and range at time of order.

Factory Options

-AH

Arctic heater for cold environment applications down to -55°C / -67°F. (incoming 10-30 VDC power must be at least 24VDC)

-S

Splash guard to protect sensor (p/n: CXP-SPG), IP56 or IP66 rating with splash guard installed

Accessory

CXP-CAL

Calibration adapter

CET-MW

Magnetic Wand for non-intrusive calibration and menu navigation

CXP-SPG

Splash guard to protect sensor, IP56 or IP66 rating with splash guard installed

Remote Sensors

CXT2-A-R-CH2

CXT analog transmitter with remote catalytic Hydrogen (H2) sensor (0 -100% LEL range), comes with gas flow adapter and three 5A relays, 6.35 mm (1/4 in) ID tubing required (not supplied), aluminum Class 1 / Div 1 / Gr. A, B, C, D enclosure

CXT2-A-R-CCH4

CXT analog transmitter with remote catalytic Methane (CH4) sensor (0 -100% LEL range), comes with gas flow adapter and three 5A relays, 6.35 mm (1/4 in) ID tubing required (not supplied), aluminum Class 1 / Div 1 / Gr. A, B, C, D enclosure

CXT2-D-R-CH2

CXT digital transmitter with remote catalytic Hydrogen (H2) sensor (0 -100% LEL range), no relays, comes with gas flow adapter, 6.35 mm (1/4 in) ID tubing required (not supplied), aluminum Class 1 / Div 1 / Gr. A, B, C, D enclosure

CXT2-D-R-CCH4

CXT digital transmitter with remote catalytic Methane (CH4) sensor (0 -100% LEL range), no relays, comes with gas flow adapter, 6.35 mm (1/4 in) ID tubing required (not supplied), aluminum Class 1 / Div 1 / Gr. A, B, C, D enclosure