Manning Systems EC-FX-NH3 Operating Manual

Electrochemical Ammonia (NH3) Leak Detector

EC-FX-NH3

Instruction and Installation Manual

Part No. 1998M0872

Revision 1

June 2014

Honeywell Confidential & Proprietary This work contains valuable, confidential, and proprietary information.

Disclosure, use or reproduction outside of Honeywell Inc. is prohibited except as authorized in writing. This

unpublished work is protected by the laws of the United States and other countries.

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Table of Contents ................................................................................................. 1

Figures ................................................................................................................. 2

Notices and Trademarks

............................................................................................................ 4

Online

..................................................................................................... 4

Telephone

.................................................................................................. 4

...................................................................................... 3

Symbol Definitions ................................................................................................ 5

Introduction .......................................................................................................... 6

System Description ............................................................................................... 7

Specifications ............................................................................................ 7

Installation ............................................................................................................ 9

A Locating the EC-FX

-NH3 Sensor

...................................................... 9

B Wiring ........................................................................................... 11

Outputs: ...................................................................................... 13

Cable Recommendation: .............................................................. 14

Operation ........................................................................................................... 16

A Start-up Procedures ..................................................................... 16

Simple Start-Up Test: .................................................................... 16

B Pushbutton Operation and LED Indicators .................................... 16

Green LED ................................................................................... 17

Red LED ...................................................................................... 17

Yellow LED .................................................................................. 17

Green — ON, Red — Fast Blink, Yellow — Fast Blink ................... 18

SensorCheckTM ............................................................................ 20

4/20 mA Loop Test ....................................................................... 21

Simple Zero Test .......................................................................... 22

Span Calibration Mode ................................................................. 22

Span Calibration .......................................................................... 23

Span Signal Formula ................................................................... 25

MODBUS Address Change ............................................................. 26

Troubleshooting

............................................................................. 28

D Maintenance ................................................................................ 31

EC Sensor Replacement Procedure ............................................... 32

Replacement Parts ........................................................................ 32

Limited Warranty ................................................................................................ 33

Limited Warranty ...................................................................................... 33

Exclusions .............................................................................................. 33

Warranty Limitation and Exclusion ............................................................ 33

Disclaimer of Unstated Warranties............................................................ 33

Limitation of Liability ................................................................................ 34

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Figures

Figure 1. Mounting Dimensions ............................................................... 10

Figure 2. 4/20 mA Output Wiring Diagram ................................................ 13

Figure 3. RS-485 Communication and Power Wiring Diagram................... 15

Figure 4. LED Blink Sequence ................................................................. 17

Figure 5. EC-FX-NH3 Detector Components ............................................ 18

Figure 6. LED Sequence Indicator and Operation Summary ...................... 19

Figure 7. LCD Module.............................................................................. 27

Figure 8. Troubleshooting ....................................................................... 30

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Notices and Trademarks

While this information is presented in good faith and believed to be accurate, Honeywell disclaims the implied and makes no express warranties except as may and for its customers.

warranties of merchantability and fitness for a particular purpose

be stated in its written agreement with

In no event is Honeywell liable to anyone for any indirect, special or consequential damages. The information and specifications in this document are subject to change without notice.

Manning is a registered trademark of Honeywell International Inc.

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Contact Us

Online

Telephone

Honeywell Organization WWW Address (URL)

Corporate www.honeywell.com

Honeywell Analytics www.honeywellanalytics.com

To return a product, contact haservice.canada@honeywell.com to obtain an RMA number.

For sales Information, contact detectgas@honeywell.com.

Organization Phone Number

1-800-538-0363 1-847-955-8200

1- 800-663-4164

1- 800-563-2967

+82 2 6909 0321

+41 (0)44 943 4300

Americas

Asia Pacific

Europe/Middle East/Africa

Honeywell Analytics Inc. Lincolnshire, IL

BW Technologies by Honeywell Calgary, Alberta, Canada

Honeywell Analytics Inc. Brossard, Quebec, Canada

Honeywell Asia Pacific Inc. Seoul, Korea

Life Safety Distribution AG

Hegnau, Switzerland

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Symbol Definitions

The following table lists those symbols used in this document to denote certain conditions.

Symbol Definition

ATTENTION: Identifies information that requires

special consideration.

TIP: Identifies advice or hints for the user, often

in terms of performing a task.

REFERENCE-EXTERNAL: Identifies an

additional source of information outside of this bookset.

REFERENCE-INTERNAL: Identifies an

additional source of information within this bookset.

Indicates a situation which, if not avoided, may

result in equipment or work (data) on the system being damaged or lost, or may result in the inability to properly operate the process.

CAUTION: Indicates a potentially hazardous

situation which, if not avoided, may result in minor or moderate injury. It may also be used to alert against unsafe practices.

CAUTION: Symbol on the equipment refers the user to the product manual for additional information. The symbol appears next to required information in the manual.

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Introduction

This manual has been prepared to help in the use and installation of the EC-FX-

(Electrochemical-Ammonia) Sensor. This manual will convey the operating

NH3 principles of the sensor, ensure proper installation, and

demonstrate start-up and

routine maintenance procedures for the sensor.

ATTENTION: This manual must be carefully followed by all individuals who have or will have the responsibility for using or servicing the sensor.

Warranties made by Honeywell Analytics with respect to this equipment will be voided if the equipment is not used and serviced in accordance with the instructions in this

manual. If in doubt about a procedure, please contact

Honeywell Analytics before proceeding.

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System Description

The EC-FX-NH3 leak detector is a three-wire 4/20 mA transmitter/sensor with RS-485 Modbus RTU detection in industrial refrigeration, cold-storage environments, and engine rooms.

The detector exhibits excellent durability and precision, with negligible response to common interference gases and changes in relative humidity. The default alarm level is 25 ppm for the 0 extremely high reliability with no moving parts.

communication. It is designed for low-level ammonia

100 ppm sensor. The unit exhibits

Monitoring equipment must be configured to indicate less than 1.5 mA. All signals over 20 mA must be considered high gas concentrations.

Specifications

Method: Electrochemical (diffusion)

Ranges:

0-200 PPM 0-250 PPM

Output: Isolated 4/20 mA, 700 ohms max at 24 to 0.5 mA to indicate a

RS-485 Protocol:

Accuracy: ±5% of full scale range at temperature of calibration. Contact

Honeywell Analytics for additional details.

Repeatability: <10% of full scale

Response Time (T

Sensor Viability Test: An internal microprocessor

electrical viability every 24 viability

0-100 PPM

VDC. Signal output reduces

fault condition.

MODBUS RTU

): <30 seconds, 90% full scale

hours (SensorCheckTM). Should the electrical

test fail, a 0.5 mA signal will indicate a fault.

a fault if the signal is

determines the sensor’s

A red LED on the circuit board will indicate if a sensor is degraded electrically, depleted of electrolyte or

4/20 mA Loop Viability Test: Internal monitoring of

disconnected.

4/20 mA output

impedance.

Operating Humidity: 5%-100% RH (condensing). ATMOS equipped® enviro-adaptive technology option required for condensing conditions or refrigerated areas, and all outdoor applications.

Operating Temperatures:

-50oF to +120oF (-45ºC to +50ºC). ATMOS® equipped enviro-adaptive technology option required for refrigerated areas or outdoors.

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Sensor Pressure Limits: Atmospheric ±10%

Power Source: 24 VDC (recommended), 0.5 amp max. 14-26 VDC acceptable.

Cable Recommendations:

4/20 output: #18/3 shielded cable (Belden #8770 or

runs <1,500 feet.

Modbus RTU (RS-485): For communication cable, twisted pair, shielded (Belden #9841 or 2,000 feet.

Power Cable Recommendations:

For power cable,

use 14 AWG (Belden #5100UE or equal), cable runs up to 1,000 feet, for each power supply. Larger power cable and/or additional power supplies may be and/or increased sensor

current draw, line loss, and cable size, contact Honeywell

number of sensors. Due to variables such as

required for longer cable runs

Analytics for help with power requirements.

Gas Sampling: Diffusion method is standard.

Enclosure: NEMA 1, gasketed, #16-gauge steel

models are available.

NOTE: The EC-FX is for use in non-classified areas only.

equal), cable

use 24 AWG

equal), cable runs up to

(standard) or stainless steel

Weight: 3 lbs.

Dimensions: 6" high x 4" wide x 3.5" deep

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Installation

A Locating the EC-FX

Because each sensor is a point measurement, it is very important that the sensor be located properly.

One of the most important considerations when installing EC sensors is that they must be easily accessible for calibration and maintenance. As a general rule, locate sensors no closer than one foot from the ceiling.

If the primary application is personal protection concentration reading that an sensor at be about five feet off the ground, which also allows easy access.

If the primary application is the fastest possible leak sensor near the potential leak usually near refrigeration applications, ammonia vapors from an NH low elevation. In mounted at high elevation and the indicated representative of personnel complicate access to the sensor for required calibration and maintenance. For more information on scenarios,

a height in the breathing zone of the employees. It would typically

the ceiling as ammonia vapor is lighter than air. In certain

these cases, leak detection will take longer if the sensor is

please contact Honeywell Analytics.

-NH3 Sensor

employee would be exposed to), mount the

sources. In the case of ammonia, this is

exposure. Higher mounting locations can also

sensor mounting locations for different leak

(representative

detection, mount the

leak will remain at a

concentration will not be

General Mounting Considerations:

• Should be easily accessible for calibration and maintenance.

• Mount the sensor close to a potential leak source.

• If personnel protection is the primary application, mount in the

“breathing zone”.

• Protect sensor from water, excessive humidity, and wash-down.

• Take air movement and ventilation patterns into account.

• If mounting sensor outdoors, consider prevailing wind direction and

proximity to the most likely source of leaks. Protect the sensor from sun and rain as much as possible.

• Never mount the sensor in CA (controlled atmosphere) rooms because normal atmospheric level of oxygen is required for operation.

• For highly critical locations, more than one sensor should be installed in each room.

• To prevent electrical interference, keep sensor and wire runs away from mercury vapor lights, variable speed drives, and radio repeaters.

• Protect sensor from physical damage (fork lifts, etc.).

• Do not mount the sensor over a door in a refrigerated area.

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Figure 1. Mounting Dimensions

• Sensor must be mounted vertically.

• Never mount flat on a ceiling.

• Enter enclosure only through existing hole in bottom.

• Always make a drip loop in the conduit (see Figure 1).

Blast Freezers: Never mount sensor above the coil. The ideal location, when possible, is below the protect

the unit from being damaged by product loading and unloading. Keep it away from warm, moist air during the ground is the

best location.

Penthouses:

• Multi-Coil (defrost one coil at a time): In this case the

usually in the center of the penthouse

grate.

• Single Coil (or when all coils defrost at the same time):

high moisture conditions can occur and

mounted one foot above the

Engine Rooms: The sensor should be possible. Keep the sensor away from hot air exhausting from electric or other machinery. Usually the best location is four or five feet above the floor in a location where from the potential leak source.

bottom of the coil. Try to put in return air and

defrost. Usually four or five feet off

best location is

four or five feet above the

In this case

the sensor should be

grate.

mounted in a cool part of the room, if

motors

the room exhaust fan will move air across the sensor

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