RKI Instruments M2 Manuale utente

RKI Instruments, Inc.

www.rkiinstruments.com

M2 Transmitter

Operator’s Manual

Part Number: 71-0107RK

Revision: D

Released: 10/7/10

M2 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.

M2 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

M2 Transmitter Operator’s Manual

Table of Contents

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

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

About the M2 Transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

About this Manual. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Chapter 2: Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

External Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Internal Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Chapter 3: Installation & Startup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Mounting the M2 Transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Wiring the M2 Transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Start Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Chapter 4: Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Normal Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Information Screen. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

4 - 20 mA Signal Output Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

Alarm Indications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

Chapter 5: Configuration Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

Viewing & Changing M2 Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

Chapter 6: Gas Type Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

Selecting the Gas Type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

M2 Transmitter Operator’s Manual

Chapter 7: Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

Preventive Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

Calibration Frequency. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

Calibration, Combustible Gas, CO2, and Toxic Versions . . . . . . . . . . . . . . . . . . . . . 40

Calibration, Oxygen Version . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

Replacing Components of the M2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

Chapter 8: RS-485 Modbus Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

Wiring the M2 in a Modbus System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

Using the M2 in a 4-wire Modbus System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

Modbus Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

Supported Modbus Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60

Appendix A: Control Button Quick Reference Guide. . . . . . . . . . . . . . . . . . . . . . . . . . . . 64

Appendix B: Function Code 16 Registers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65

(Appendix B available from RKI Instruments, Inc. Not included in manual as normally

provided with M2 detector head.)

1 M2 Transmitter Operator’s Manual

Chapter 1: Introduction

Overview

This chapter briefly describes the M2 Transmitter. This chapter also describes the M2

Transmitter Operator’s Manual (this document). Table 1 at the end of this chapter lists the

specifications for the M2.

About the M2 Transmitter

The M2 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 M2 displays the current gas reading on an LCD 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 M2 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 M2 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.

M2 Transmitter Operator’s Manual 2

Specifications

Table 1 lists specifications for the M2.

Table 1: M2 Specifications

Target Gas/Detection

Range Combustible Gas/Carbon Dioxide (CO2)

• Catalytic LEL: 0 - 100% LEL, 1% LEL increments (CH4calibration

unless otherwise specified. H2specific detector available)

•IR(infrared)CH

4LEL: 0 - 100% LEL, 1% LEL increments

• IR HC LEL: 0 - 100% LEL, 1% LEL increments (propane calibration)

•IRCH

4Volume: 0 - 100 % volume, 1% increments

•IRCO

2ppm: 0 - 5,000 ppm, 20 ppm increments

•IRCO

2Volume: 0 - 5.00 % volume, 0.01% increments

•IRCO

2Volume: 0 - 50.0 % volume, 0.1% increments

•IRCO

2Volume: 0 - 100 % volume, 1% increments

Oxygen

•Oxygen(O

2): 0 - 25.0 % volume, 0.1% increments

CO/H2S

• Carbon Monoxide (CO): 0 - 300 ppm, 1 ppm increments

• Hydrogen Sulfide (H2S): 0 - 100 ppm, 1 ppm increments

ESM-01 Toxic

•Ammonia(NH

3): 0 - 75.0 ppm, 0.1 ppm increments

•Arsine(AsH

3): 0 - 1.50 ppm, 0.01 ppm increments

•Chlorine(Cl

2): 0 - 3.00 ppm, 0.01 ppm increments

• Hydrogen Cyanide (HCN): 0 - 15.0 ppm, 0.1 ppm increments

• Phosphine (PH3): 0 - 1.00 ppm, 0.01 ppm increments

• Sulphur Dioxide (SO2): 0 - 6.00 ppm, 0.01 ppm increments

Alarm Settings

(Alarm 1/Alarm 2) Combustible Gas (%LEL): 10 %LEL/50 %LEL

Combustible Gas (%Volume): 100 %/100 %

CO2 0 - 5,000 ppm: 2,500 ppm/5,000 ppm

CO2 0 - 5.00%: 0.50 %/3.00 %

CO2 0 - 50.0%: 50.0%/50.0%

CO2 0 - 100%: 100%/100%

Oxygen: 19.5%(decreasing)/23.5%(increasing)

Carbon Monoxide: 25 ppm/50 ppm

Hydrogen Sulfide: 10 ppm/50 ppm

Ammonia: 12 ppm/25 ppm

Arsine: 0.20 ppm/0.50ppm

Chlorine: 0.50 ppm/1.50 ppm

Hydrogen Cyanide: 5.0 ppm/10.0 ppm

Phosphine: 0.10 ppm/0.30 ppm

Sulphur Dioxide: 1.00 ppm/2.00 ppm

Construction

(housing) Explosion-proof Junction Box, NEMA 4

Area Classification Explosion-proof for Class I, Groups B, C, and D (Combustible, CO2, CSA

Type CO and H2S, and CSA Type oxygen)

3 M2 Transmitter Operator’s Manual

WARNING: When using the M2, you must follow the instructions and warnings in

this manual to assure proper and safe operation of the M2 and to

minimize the risk of personal injury. Be sure to maintain and periodically

calibrate the M2 as described in this manual.

Sampling Method Diffusion

Input Power 19 - 30 VDC

Controls • Three push button switches

• Three magnetic switches for non-intrusive calibration

Weight 4.5 lbs.

Signal Output • 4 to 20 mA, 500 ohms impedance max

• RS-485 Modbus

Operating

Temperature • ESM-01 Type: -10°C to 40 °C

• All Others: -20°C to 50°C

Accuracy ± 5% of full scale

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

“Viewing & Changing M2 Parameters” on page 30.

Table 1: M2 Specifications

M2 Transmitter Operator’s Manual 4

Chapter 2: Description

Overview

This chapter describes external and internal components of the M2 Transmitter.

External Description

This section describes the junction box and all external components of the M2 transmitter.

Figure 1: M2 External Components

Junction Box

The M2’s cast aluminum junction box is dust and weather resistant. The junction box also

protects the M2 and all connections made to it. Use the two 3/4 in. conduit hubs to mount

the detector to the junction box (factory installed in the bottom hub) and connect wiring

from an external device (top hub).

Use the junction box’s two mounting holes to mount the M2 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 LCD 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.

3/4 NPT

Conduit Hub

Junction Box

Cover

Window

Detector

(Catalytic LEL Detector Shown)

Mounting Hole (2) Magnetic

Wand

5 M2 Transmitter Operator’s Manual

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.

Gas Detector

The gas detector senses the target gas and is mounted in a 3/4” conduit hub on the right

bottom side of the M2. A variety of detectors may be used with the M2. Table 2 below lists

the detectors that can be used with the M2.

Table 2: M2 Detectors

Target Gas, Range Detector(s) Used

Combustible Gas, 0 - 100% LEL • 61-0140RK (Catalytic UL version)

• 61-0140RK-05 (Catalytic CSA version)

Hydrogen, 0 - 100% LEL • NC-6205-01 (Catalytic UL version, hydrogen specific)

• NC-6205-05 (Catalytic CSA version, hydrogen specific)

CH4, 0 - 100% LEL • 61-0190RK-CH4 (IR UL)

HC, 0 - 100% LEL (cal. to propane) • 61-0190RK-HC (IR UL)

CH4, 0 - 100% volume • 61-0192RK-CH4 (IR UL)

CO2, 0 - 5,000 ppm • 61-0191RK-02 (IR UL)

• 61-0198RK-02 (IR)

CO2, 0 - 5% • 61-0191RK-03 (IR UL)

• 61-0198RK-03 (IR)

CO2, 0 - 50% • 61-0191RK-05 (IR UL)

• 61-0198RK-05 (IR)

CO2, 0 - 100% • 61-0191RK-10 (IR UL)

• 61-0198RK-10 (IR)

Oxygen, 0 - 25% • 65-2494RK (capillary)

• 65-2510RK (partial pressure)

• 65-2511RK (capillary)

• 65-2514RK (capillary, CSA)

CO, 0 - 300 ppm • 65-2433RK-05 (CSA)

• 65-2496RK

H2S, 0 - 100 ppm • 65-2423RK-05 (CSA)

• 65-2495RK

NH3, 0 - 75 ppm • 65-2300RK-NH3

AsH3, 0 - 1.5 ppm • 65-2300RK-ASH3

CL2, 0 - 3 ppm • 65-2300RK-CL2

PH3, 0 - 1 ppm • 65-2300RK-PH3

SO2, 0 - 6 ppm • 65-2300RK-SO2

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