Yokogawa MLX Data sheet

General

Model MLX

Specifications

Loop Powered Process Indicator

The Model MLX Loop-Powered Process Indicator receives DC current signals from electronic transmitters and indicates process measurement values. Standard models are general purpose.

STANDARD SPECIFICATIONS

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FUNCTIONAL SPECIFICATIONS

Input: 4-20mA DC 2-wire Voltage Drop: 3.5V at 20mA LCD Display Numerical: Six 7-segment digits

Alpha-numerical: Six 14-segment characters Bar graph: 20-segment Bar graph. Symbols: P, SP, T, F, %, √, x10, x100, x1000 Configuration: User configurable for desired

engineering units. Method: User configurable from front panel Zero & Span: Zero and span can be set between ±999999. Turn-on Time: 12 second (includes power on self-test and memory integrity check)

Update Time: 1 second Isolation: Input/Output/Ground isolated to 500V DC

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PERFORMANCE SPECIFICATIONS

Accuracy: ± 0.05% of full scale +1 digit Operating Current: 3.6mA to 28mA Ambient Temperature: -30 to +60°C (-22 to 140°F) Ambient Humidity: 0 to 100%RH at 23°C (73°F) Ambient Temperature Effect: 0.1°C per 10°C Over range: 200mA without damage Maximum error: +0.02%, -0.03% (of full scale) Conformity (Linearity): 0.03% Hysteresis error: 0.03% Repeatability: 0.03% Vibration: 3G @ 10-150Hz Shock: 50G Explosion Protection: FM, CSA, ATEX, and IEC

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PHYSICAL SPECIFICATIONS

Enclosure Material Housing: Low copper cast aluminum alloy with

Polyurethane resin baked finish - Deep sea moss green (equivalent of Munsell 0.6GY3.1/2.0) or

SUS316 cast stainless steel (ASTM CF-8M) Name plate: Black anodized aluminum or 316 SST Tag: 304 SST Wired tag: 304 SST

Degrees of Protection: NEMA 4X, IP67 Mounting: Nominal 2” (50mm) pipe mount or

surface. (horizontal or vertical) Weight: 1.25kg (2.70 lbs)* *: Without mounting bracket Add 0.8 kg (0.35 lbs) for mounting bracket

Electrical Connection: ½ NPT female or M20 female

FEATURES

User interface

A front panel push button switch combined with four touch switches allows easy configuration of the indicator (calibration, span, zero and engineering units).

Root extraction

For applications where the process variable is non-linear and based on the square root, 3/2 root or 5/2 root, the MLX can be configured to display the root function of the input.

Field Configurable

Via the front panel user interface, the process variable parameters can be modified as desired in the field.

LCD Display features

The LCD display includes a bar graph for an analog indication of the process variable magnitude. The 6 digit display and 6 character display (combined with several symbols) give an instant view of all process variable parameters. A menu system allows customizing parameters such as decimal point position, engineering units, status of symbols and state of bar graph.

Self-diagnostics

Built-in diagnostics operate at power-up and during operation for ease of maintenance and troubleshooting.

Yokogawa Corporation of America 2 Dar t Ro ad, Ne wna n, GA 30265 770-254-0400

GS 6 0A02S01-01E-

©Copyright Februa ry 2012

2nd Edit ion

MODEL AND SUFFIX CODES

Model Suffix Codes Description

MLX ………………………………........... Loop Indicator

Input signal -A…………………………………... 4 to 20mA DC Mounting

Housing Communication -1…………………. Electrical Connection

Optional Codes

OPTIONAL SPECIFICATIONS (For Explosion Protected Type)

1…………………………............

2…………………………............

1…………………………........

2…………………………........

-2…………………. 0…………….. 1……………..

2…………….. 3…………….. 4……………..

2 inch Horizontal Pipe 2 inch Vertical Pipe (or wall mount) Cast aluminum alloy

SUS316 cast stainless steel and ASTM CF-8M

Standard HART Communications (To be announced later) ANSI ½ NPT female, two electrical connections without blind plugs ANSI ½ NPT female, two electrical connections and a 304 SST blind plug ANSI ½ NPT female, two electrical connections and a 316 SST blind plug ISO M20 female, two electrical connections without blind plugs ISO M20 female, two electrical connections and a 316 SST blind plug

/ □Optional specification

Item Description Code

Factory Mutual (FM)

CENELEC ATEX

FM Explosion-proof Approval

Applicable Standard: FM3600, FM3615, FM3810, ANSI/NEMA 250 Explosionproof for Class I, Division 1, Groups A, B, C and D, Dust-ignitionproof for Class II/III, Division 1, Groups E, F and G, in Hazardous locations, indoors and outdoors (NEMA 4X) Temperature class: T5, Ambient Temperature: –30 to 60°C (–22 to 140°F)

FM Intrinsically Safe/FM Explosion-proof/FM Non-incendive Approval (Pending)

Applicable Standard: FM3600, FM3610, FM3611, FM3615, FM3810, ANSI/NEMA 250 Intrinsically Safe for Class I, Division 1, Groups A, B, C & D, Class II, Division 1, Groups E, F & G and Class III, Division 1, Class I, Zone 0, in Hazardous Locations, AEx ia IIC Non-incendive for Class I, Division 2, Groups A, B, C & D, Class II, Division. 2, Groups E, F & G, and Class III, Division 1, Class I, Zone 2, Group IIC, in Hazardous Locations Enclosure: "NEMA 4X", Temp. Class: T5, Amb. Temp.: –40 to 85°C (–40 to 185°F) Intrinsically Safe Apparatus Parameters [Groups A, B, C, D, E, F and G] Vmax=30 V, Imax=200 mA, Pmax=0.9 W, Ci=6 nF, Li=0 _H [Groups C, D, E, F and G] Vmax=30 V, Imax=200 mA, Pmax=0.9 W, Ci=10 nF, Li=0 mH

ATEX Intrinsically Safe/ATEX Flameproof/Non-incendive Approval (Pending)

Flameproof

Applicable Standard: EN 60079-0, EN 60079-1, EN 60079-31

II 2G, 2D Ex d IIC T5 Ex tD A21 IP6X T85 Degree of protection : IP66 and IP67

Temperature class: T5, Ambient Temperature: –40 to 85°C (–40 to 185°F) Intrinsically safe Applicable Standard: EN 60079-0, EN 60079-11, EN 60079-26

II 1G, 1D Ex ia IIC T5 Degree of protection : IP66 and IP67

Temperature class: T5, Ambient Temperature: –40 to 85°C (–40 to 185°F) Entity parameters : Ui=30 V, Ii=200 mA, Pi=0.9 W, Ci=10 nF, Li=0 mH Non-incendive Applicable Standard: EN 60079-0, EN 60079-11

II 3G Ex ic IIC T5

Temperature class: T5, Ambient Temperature: –40 to 85°C (–40 to 185°F) Entity parameters : Ui=30 V, Ii=200 mA, Pi=0.9 W, Ci=10 nF, Li=0 mH

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