RKI Instruments 65-2645RK-05-04 Bedienungsanleitung

RKI Instruments, Inc.

www.rkiinstruments.com

65-2645RK-05-04

M2A Transmitter

Operator’s Manual

Part Number: 71-0348

Revision: F

Released: 9/9/20

65-2645RK-05-04 M2A Transmitter Operator’s Manual

WARNING

Read and understand this instruction manual before operating

instrument. Improper use of the gas monitor could result in bodily

harm or death.

Periodic calibration and maintenance of the gas monitor is essential

for proper operation and correct readings. Please calibrate and

maintain this instrument regularly! Frequency of calibration depends

upon the type of use you have and the sensor types. Typical

calibration frequencies for most applications are between 3 and 6

months, but can be required more often or less often based on your

usage.

65-2645RK-05-04 M2A Transmitter Operator’s Manual

Product Warranty

RKI Instruments, Inc. warrants gas alarm equipment sold by us to be free from defects in materials,

workmanship, and performance for a period of one year from date of shipment from RKI Instruments, Inc. Any

parts found defective within that period will be repaired or replaced, at our option, free of charge. This warranty

does not apply to those items which by their nature are subject to deterioration or consumption in normal service,

and which must be cleaned, repaired, or replaced on a routine basis. Examples of such items are:

Warranty is voided by abuse including mechanical damage, alteration, rough handling, or repair procedures not

in accordance with the operator’s manual. This warranty indicates the full extent of our liability, and we are not

responsible for removal or replacement costs, local repair costs, transportation costs, or contingent expenses

incurred without our prior approval.

THIS WARRANTY IS EXPRESSLY IN LIEU OF ANY AND ALL OTHER WARRANTIES AND

REPRESENTATIONS, EXPRESSED OR IMPLIED, AND ALL OTHER OBLIGATIONS OR

LIABILITIES ON THE PART OF RKI INSTRUMENTS, INC. INCLUDING BUT NOT

LIMITED TO, THE WARRANTY OF MERCHANTABILITY OR FITNESS FOR A

PARTICULAR PURPOSE. IN NO EVENT SHALL RKI INSTRUMENTS, INC. BE LIABLE

FOR INDIRECT, INCIDENTAL, OR CONSEQUENTIAL LOSS OR DAMAGE OF ANY KIND

CONNECTED WITH THE USE OF ITS PRODUCTS OR FAILURE OF ITS PRODUCTS TO

FUNCTION OR OPERATE PROPERLY.

This warranty covers instruments and parts sold to users by authorized distributors, dealers, and representatives

as appointed by RKI Instruments, Inc.

We do not assume indemnification for any accident or damage caused by the operation of this gas monitor, and

our warranty is limited to the replacement of parts or our complete goods.

a) Absorbent cartridges d) Batteries

b) Pump diaphragms and valves e) Filter elements

c) Fuses

65-2645RK-05-04 M2A Transmitter Operator’s Manual

Table of Contents

Chapter 1: Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

About the M2A Transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

About this Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

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

Chapter 2: Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

External Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Internal Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Chapter 3: Installation & Startup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Mounting the M2A Transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Wiring the M2A Transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Start Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Chapter 4: Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Normal Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Information Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

4 - 20 mA Signal Output Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Alarm Indications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Chapter 5: Configuration Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

Viewing & Changing M2A Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

Chapter 6: Gas Type Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

Selecting the Gas Type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

65-2645RK-05-04 M2A Transmitter Operator’s Manual

Chapter 7: Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

Preventive Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

Calibration Frequency. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

Replacing Components of the H2S Detector . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

Chapter 8: RS-485 Modbus Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

Wiring the M2A in a Modbus System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

Using the M2A in a 4-wire Modbus System. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

Modbus Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

Supported Modbus Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

Chapter 9: Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

Appendix A: Control Button Quick Reference Guide. . . . . . . . . . . . . . . . . . . . . . . . . 51

Appendix B: PLC and DCS Device Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

Appendix C: Function Code 16 Registers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

6 65-2645RK-05-04 M2A Transmitter Operator’s Manual

Chapter 1: Introduction

Overview

This chapter briefly describes the 65-2645RK-05-04 M2A Transmitter. This chapter also describes the 65-

2645RK-05-04 M2A Transmitter Operator’s Manual (this document). Table 1 at the end of this chapter lists the

specifications for the M2A.

About the M2A Transmitter

The M2A transmitter is a fixed mount, continuous-monitoring detector head. All user adjustable parameters may

be accessed using push button switches. In addition, calibration may be performed non-intrusively by use of a

magnetic wand accessory which activates magnetic switches through a window at the front face of the detector

head.

The M2A displays the current gas reading on an OLED display which is visible through the window in the cover

(front face) and provides a 4 - 20 mA signal which indicates the target gas reading for use by a gas monitoring

controller, recording device, or programmable controller. The M2A also provides an RS-485 Modbus output.

Three sets of relay contacts, two controlled by the gas alarms and one by the fail alarm, rated at 115 VAC 5 amps

are available for controlling devices such as lights or horns or for controlling higher rated relays.

Four operating modes allow you to display and change setup and calibration settings and change the gas type.

They are Calibration Mode, Configuration Mode, Gas Type Mode, and Modbus Mode.

About this Manual

The M2A Transmitter Operator’s Manual uses the following conventions for notes, cautions, and warnings.

NOTE: Describes additional or critical information.

CAUTION: Describes potential damage to equipment.

WARNING: Describes potential danger that can result in injury or death.

65-2645RK-05-04 M2A Transmitter Operator’s Manual 7

Specifications

Table 1 lists specifications for the M2A.

WARNING: When using the M2A, you must follow the instructions and warnings in this manual to

assure proper and safe operation of the M2A and to minimize the risk of personal injury. Be

sure to maintain and periodically calibrate the M2A as described in this manual.

Table 1: M2A Specifications

Target Gas/Detection Range Hydrogen sulfide: 0 - 100 ppm, 1 ppm increments

Alarm Settings (Alarm 1/Alarm 2)* 10 ppm/50 ppm

Construction (housing) Explosion-proof junction box, NEMA 4X

Area Classification Explosion-proof for Class I, Groups B, C, and D

Sampling Method Diffusion

Input Power 10 - 30 VDC

Controls • Three push button switches

• Three magnetic switches for non-intrusive calibration

Weight 5.5 lbs.

Signal Output • 4 to 20 mA with impedance maximums listed below

-12 VDC: 500 ohms impedance max

-24 VDC: 1000 ohms impedance max

• RS-485 Modbus

Operating Temperature -40°C to 40°C

Accuracy ± 5% of reading or ± 2 ppm H2S (whichever is greater)

*These are the RKI factory settings. You can change the alarm settings in Configuration Mode.

See “Viewing & Changing M2A Parameters” on page 26.

8 65-2645RK-05-04 M2A Transmitter Operator’s Manual

Chapter 2: Description

Overview

This chapter describes the components of the M2A transmitter. The transmitter is a 4 - 20 mA type detector head.

It consists of the H2S detector, calibration adapter/splash guard, terminal PCB, the M2A junction box, and the

detector junction box. The two junction box configuration is intended for situations where the detector needs to

be installed at an inaccessible location. The detector junction box can be installed at the inaccessible location and

the M2A junction box can be installed in a more readily accessible area.

External Description

This section describes the junction boxes and all external components of the M2A transmitter.

Figure 1: M2A External Components

Magnetic

Wand

Terminal

Strip

M2A

Junction

Box Detector

Junction Box

3/4 NPT Conduit Hub

Calibration Adapter/

Splash Guard

3/4 NPT

Conduit Hub

Hydrogen Sulfide

Detector

Mounting Slot (2x)

Window

3/4 NPT

Conduit Hub

65-2645RK-05-04 M2A Transmitter Operator’s Manual 9

M2A Junction Box

The M2A’s cast aluminum junction box is dust and weather resistant. The junction box also protects the M2A

and all connections made to it. Use the three 3/4 NPT conduit hubs to wire the remotely installed combustible gas

detector and connect wiring from an external device, typically an RKI controller. The top hub is shipped with a

factory installed and sealed conduit plug to avoid leaks into the junction box. If necessary, the conduit plug can

be removed and the top hub can be used for wiring.

WARNING: If the top conduit hub is used for wiring, be sure to seal the threads to ensure water does not

enter the junction box. See “Wiring the M2A Transmitter” on page 17 for complete wiring

instructions.

Use the junction box’s two mounting holes to mount the M2A to a vertical surface at the monitoring site. The

window in the cover on the front of the junction box allows you to view the OLED display and use the magnetic

wand to actuate the magnetic control switches so you can perform non-intrusive calibration. Removing the cover

allows you to access the interior of the junction box.

Detector Junction Box

The detector junction box is intended to be installed remotely from the M2A junction box. The H2S detector is

factory installed in the bottom 3/4 NPT conduit hub. A terminal strip is provided for wiring connections and the

detector is factory wired to one side of this terminal strip. The other side of the terminal strip is for user-supplied

wiring to the detector terminal strip located in the M2A junction box. This wiring should go through the top 3/4

NPT conduit hub. Three spacers installed on the back of the junction box controls the distance of the junction

box from a mounting surface. A ground boss near the top conduit hub provides an external earth ground

connection.

H2S Detector

The H2S detector consists of the detector housing body, detector housing cap, cap gasket, rubber boot, spacer,

and the plug-in sensor.

Figure 2: H2S Detector Component Location

H2S Plug-in Sensor

Spacer

Cap Gasket

Detector Housing Body

Detector Housing Cap

Flame Arrestor

Guard

Rubber Boot

10 65-2645RK-05-04 M2A Transmitter Operator’s Manual

Detector Housing Body

The detector housing body protects the electronic components within the housing. Use the mounting threads at

the top of the housing to screw the H2S detector into the 3/4 NPT hub on the bottom of the detector junction box.

Two wires extend from the top of the detector housing body. Use these wires to connect the H2S detector to the

terminal strip. One of the wires is red and one of the wires is black.

The housing includes a four-socket pattern. This socket pattern accepts the sensor’s four pins to secure the sensor

within the detector housing. A pre-amplifier, located between the sockets and two interconnect wires, conditions

the sensor’s signal before the signal reaches the controller.

Housing Cap & Cap Gasket

The housing cap screws onto the detector housing. It retains the plug-in sensor and protects it from damage. The

housing cap also includes a flame arrestor which contains any sparks that may occur within the detector and a

flame arrestor guard which protects the flame arrestor from damage. Unscrew the detector cap to access the plug-

in sensor for maintenance or replacement. A cap gasket seals the interface between the housing and cap. A flame

arrestor guard is permanently bonded to the cap.

Rubber Boot and Spacer

A rubber boot and spacer are installed between the detector housing cap and the sensor. They help ensure that the

sensor remains plugged into the detector housing body.

Plug-In H2S Sensor

The sensor is secured within the detector assembly by the housing cap. Through a series of chemical and

electrical reactions, the sensor produces an electrical output that corresponds to the detection range of the

transmitter.

Calibration Adapter/Splash Guard

A calibration adapter/splash guard is installed on the H2S detector. A fitting at the bottom of the calibration

adapter/splash guard allows a length of tubing to be connected for calibration and routed to a more easily

accessible location (near the M2A junction box is optimal for ease of calibration). The calibration adapter/splash

guard also protects the detector from splashing water or direct water spray.

Magnetic Wand

The magnetic wand is a short plastic rod with a magnet in one end. It is used to actuate the magnetic control

switches on the control PCB while the junction box cover is still installed so that non-intrusive calibration can be

performed.

Inhaltsverzeichnis

Andere RKI Instruments Sender Handbücher

RKI Instruments

RKI Instruments 65-2462RK Bedienungsanleitung

RKI Instruments

RKI Instruments 65-2331RK Bedienungsanleitung

RKI Instruments

RKI Instruments 65-2646RKS-SW Bedienungsanleitung

RKI Instruments

RKI Instruments 65-2336RKSS Bedienungsanleitung

RKI Instruments

RKI Instruments 65-2643-05SS-4S Bedienungsanleitung

RKI Instruments

RKI Instruments 65-2643RK-05-04 Bedienungsanleitung

RKI Instruments

RKI Instruments 65-2645-05SS-04 Bedienungsanleitung

RKI Instruments

RKI Instruments 65-2397SS Bedienungsanleitung

RKI Instruments

RKI Instruments 65-2660RK-XX-04 Bedienungsanleitung

RKI Instruments

RKI Instruments 65-2658XL-CH4-4 Bedienungsanleitung

RKI Instruments

RKI Instruments AirLink 6940XP Bedienungsanleitung

RKI Instruments

RKI Instruments 65-2451RK Bedienungsanleitung

RKI Instruments

RKI Instruments 65-2333 Bedienungsanleitung

RKI Instruments

RKI Instruments 65-2660RK-01-04 Bedienungsanleitung

RKI Instruments

RKI Instruments 65-2444-500 Bedienungsanleitung

RKI Instruments

RKI Instruments M2A 65-2643RK-05-04 Bedienungsanleitung

RKI Instruments

RKI Instruments 65-2640RK-04 Bedienungsanleitung

RKI Instruments

RKI Instruments 65-2641RK-05-04 Bedienungsanleitung

RKI Instruments

RKI Instruments 65-2445 Series Bedienungsanleitung

RKI Instruments

RKI Instruments 65-2661RK-03-04 Bedienungsanleitung

RKI Instruments

RKI Instruments 65-2432RK-05 Bedienungsanleitung

RKI Instruments

RKI Instruments 65-2646RK0504SS Bedienungsanleitung

RKI Instruments

RKI Instruments 65-2330RKSS Bedienungsanleitung

RKI Instruments

RKI Instruments 65-2335RK Bedienungsanleitung

Beliebte Sender Handbücher anderer Marken

NIVELCO

NIVELCO EasyTREK SCA-300 Series Betriebsanleitung

Honeywell

Honeywell 5816WMBR Bedienungsanleitung

Kamstrup

Kamstrup READy MTU Betriebsanleitung

Omega

Omega ZW Series Bedienungsanleitung

ABB

ABB Field 264H Leitfaden

Alinco

Alinco DJ-V17T Bedienungsanleitung

Dejero

Dejero EnGo 3x Bedienungsanleitung

Rosemount

Rosemount 4600 Bedienungsanleitung

Speaka Professional

Speaka Professional 2342740 Bedienungsanleitung

trubomat

trubomat GAB 1000 Bedienungsanleitung

Teledyne Analytical Instruments

Teledyne Analytical Instruments LXT-380 Bedienungsanleitung

Rondish

Rondish UT-11 Bedienungsanleitung

MG 10JRE Bedienungsanleitung

Burkert

Burkert 8177 Bedienungsanleitung

Firetide

Firetide HotPort 3203 Handbuch

Tele Radio

Tele Radio T9-02 Bedienungsanleitung

Rotronic

Rotronic HygroFlex HF3 Series Bedienungsanleitung

Jamara

Jamara FCX6 Pro Tel Bedienungsanleitung