RKI Instruments 65-2650RK-04 Operator's Manual
  1. Manuals
  2. Brands
  3. RKI Instruments Manuals
  4. Transmitter
  5. 65-2650RK-04
  6. Operator's manual

RKI Instruments 65-2650RK-04 Operator's Manual

Molecular property spectrometer m2a transmitter
Hide thumbs
Table of Contents

Advertisement

Quick Links

Download this manual
65-2650RK-04
TM
Molecular Property Spectrometer
M2A Transmitter
Operator's Manual
Part Number: 71-0634
Revision: P1
Released: 3/23/23
RKI Instruments, Inc.
www.rkiinstruments.com

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the 65-2650RK-04 and is the answer not in the manual?

Questions and answers

Subscribe to Our Youtube Channel

Related Manuals for RKI Instruments 65-2650RK-04

Summary of Contents for RKI Instruments 65-2650RK-04

  • Page 1 65-2650RK-04 Molecular Property Spectrometer M2A Transmitter Operator’s Manual Part Number: 71-0634 Revision: P1 Released: 3/23/23 RKI Instruments, Inc. www.rkiinstruments.com...
  • Page 2 Frequency of calibration depends upon the type of use you have and the sensor types. For most applications, typical calibration frequencies are between 3 and 6 months but can be more often or less often based on your usage. 2 • 65-2650RK-04 Molecular Property Spectrometer M2A Transmitter Operator’s Manual...
  • Page 3 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.

  • Page 4: Table Of Contents

    Selecting the Gas Type ............34 4 • 65-2650RK-04 Molecular Property Spectrometer M2A Transmitter Operator’s Manual...
  • Page 5 Appendix C: Function Code 16 Registers ......61 65-2650RK-04 Molecular Property Spectrometer M2A Transmitter Operator’s Manual • 5...

  • Page 6: Chapter 1: Introduction

    Chapter 1: Introduction Overview This chapter briefly describes the 65-2650RK-04 M2A Transmitter. This chapter also describes the 65-2650RK-04 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.

  • Page 7: Specifications

    0 - 100% LEL ± 3% LEL Methyl Ethyl Ketone 0 - 100% LEL ± 5% LEL Octane 0 - 100% LEL ± 5% LEL Pentane 0 - 100% LEL ± 5% LEL 65-2650RK-04 Transmitter Operator’s Manual Chapter 1: Introduction • 7...
  • Page 8 S) or silicones present where sensor poisoning is a common problem • High-humidity environments where catalytic or IR sensors may not hold up • Environments more likely to have mixtures of hydrocarbons present 8 • Chapter 1: Introduction 65-2650RK-04 Transmitter Operator’s Manual...

  • Page 9: Chapter 2: Description

    Terminal Strip Magnetic W and W indow 3/4 NPT Conduit Hub Detector Junction Junction Box MPS LEL Detector 3/4 NPT Conduit Hub Calibration Adapter/ Splash Guard Figure 1: M2A External Components 65-2650RK-04 Transmitter Operator’s Manual Chapter 2: Description • 9...
  • Page 10 (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. 10 • Chapter 2: Description 65-2650RK-04 Transmitter Operator’s Manual...

  • Page 11: Internal Description

    The Modbus output may be used to connect the M2A to a Modbus network. The terminal PCB also controls three relays: one fail and two gas alarm. 65-2650RK-04 Transmitter Operator’s Manual Chapter 2: Description • 11...
  • Page 12 The Modbus terminal strip is a three position plug-in style terminal strip and is the bottom terminal strip in the left terminal column. It allows connection of the M2A into a Modbus network. 12 • Chapter 2: Description 65-2650RK-04 Transmitter Operator’s Manual...
  • Page 13 Alarm 2 LED RX LED Fail LED TX LED Magnetic Switches ENTER DOWN/NO RKI INSTRUMENTS UP/YES M2A TRANSMITTER Push Button Control Switches OLED Display UP/YES DOWN/NO ENTER Figure 4: Control PCB Component Location 65-2650RK-04 Transmitter Operator’s Manual Chapter 2: Description • 13...
  • Page 14 Since displaying the Information Screen only requires the use of one switch, the wand may be used to show the Information Screen (see “Information Screen” on page 25). 14 • Chapter 2: Description 65-2650RK-04 Transmitter Operator’s Manual...
  • Page 15 The alarm 2 LED is on when the M2A is experiencing an alarm 2 condition. • RX & TX LED’s These LED’s indicate data being received (RX) and transmitted (TX) when the M2A’s Modbus output is operating. 65-2650RK-04 Transmitter Operator’s Manual Chapter 2: Description • 15...

  • Page 16: Chapter 3: Installation & Startup

    4.59 5.00 3/4 NPT 2.41 Conduit Hub 5.86 5.23 1.02 .30 (2X) .47 (2X) Figure 5: Outline & Mounting Dimensions, M2A Transmitter 16 • Chapter 3: Installation & Startup 65-2650RK-04 Transmitter Operator’s Manual...

  • Page 17: Wiring The M2A Transmitter

    Wiring the M2A Transmitter WARNING: Always verify that the power source is OFF before making any wiring connections. 1. Remove the junction box cover. 2. Grasp the control PCB by its edges. 65-2650RK-04 Transmitter Operator’s Manual Chapter 3: Installation & Startup • 17...
  • Page 18 The detector terminal strip and the alarm 1 relay terminal strip may be removed by grasping them with your fingers if the adjacent terminal strips have been removed. 18 • Chapter 3: Installation & Startup 65-2650RK-04 Transmitter Operator’s Manual...
  • Page 19 Table 5: Wire Size for PWR/SIG Connections Max Distance to Max Distance to Max Distance to Controller Controller w/16 Gauge Controller w/14 Gauge w/18 Gauge Wire Wire Wire 2,500 ft. 5,000 ft. 8,000 ft. 65-2650RK-04 Transmitter Operator’s Manual Chapter 3: Installation & Startup • 19...
  • Page 20 11. Make controller, device, and relay connections as appropriate. If shielded cable is used for the PWR/SIG connections, connect the cable shield’s drain wire to an available chassis ground at the gas monitoring controller, recording device, or programmable controller. 20 • Chapter 3: Installation & Startup 65-2650RK-04 Transmitter Operator’s Manual...

  • Page 21: Start Up

    2 minutes before proceeding to “Setting the Zero Reading” on page 42. Do not expose the sensor to combustible gas during the 2-minute warmup period. Exposing the sensor to gas during this period will result in a failure condition. 65-2650RK-04 Transmitter Operator’s Manual Chapter 3: Installation & Startup • 21...
  • Page 22 Adjusting the Fresh Air Reading When the M2A is shipped from RKI Instruments, Inc., it is factory calibrated. If a full calibration is desired at startup, see “Calibration” on page 40. Verify that the M2A is in a fresh air environment (environment known to be free of the target gas and combustible or toxic gas vapors and of normal oxygen content, 20.9%).
  • Page 23 WARNING: This manual assumes the MPS sensor is operating in a background of fresh air. If the MPS sensor is not operating in a fresh air background (e.g. a monitoring background of nitrogen or argon), consult RKI Instruments Inc. before calibrating the sensor.
  • Page 24 SPAN w/Cal Gas?. NOTE: If setting the zero reading fails, see “Troubleshooting” on page 37 for recommended actions. 11. Leave the sample tubing connected to the regulator and the calibration cup. 24 • Chapter 3: Installation & Startup 65-2650RK-04 Transmitter Operator’s Manual...

  • Page 25: Chapter 4: Operation

    M2A. 3. Release the DOWN/NO button when you are done viewing the Information Screen. The display will return to the normal operation screen within a couple of seconds. 65-2650RK-04 Transmitter Operator’s Manual Chapter 4: Operation • 25...

  • Page 26: 4 - 20 Ma Signal Output Operation

    2.4 mA until the fail alarm is cleared. During the 30 second delay, the signal output follows the detector output. In the case of a downscale reading, the display and the signal output continue to track the reading down to -99% of full scale (1.15 mA). 26 • Chapter 4: Operation 65-2650RK-04 Transmitter Operator’s Manual...

  • Page 27: Alarm Indications

    M2A alerts you to an alarm 1 condition as follows: • The A1 LED turns on. • The gas reading alternates with the ALARM-1 message. • The alarm 1 relay energizes. 65-2650RK-04 Transmitter Operator’s Manual Chapter 4: Operation • 27...
  • Page 28 NOTE: If the ENTER button is pressed while the M2A is in an alarm 2 condition, the A2 LED will flash but all other indications will remain unchanged. You cannot de-energize the alarm 2 relay until the gas reading falls below the alarm 2 setpoint. 28 • Chapter 4: Operation 65-2650RK-04 Transmitter Operator’s Manual...
  • Page 29 2. When the input power increases above 10.0 volts, the M2A will begin its warm-up sequence. 3. Verify that the M2A enters normal operation after its warm-up sequence. If necessary, perform a fresh air adjustment. See “Adjusting the Fresh Air Reading” on page 22. 65-2650RK-04 Transmitter Operator’s Manual Chapter 4: Operation • 29...

  • Page 30: Chapter 5: Configuration Mode

    If the currently displayed parameter is OK, press the ENTER button to proceed to the next parameter. Table 7 lists the M2A parameters you can set. Table 7 also lists the factory set value for each parameter. 30 • Chapter 5: Configuration Mode 65-2650RK-04 Transmitter Operator’s Manual...
  • Page 31 2 circuit after the alarm 2 condition passes. ALARM-2 (relay reset) (LATCH) If set as SELF-RST, the M2A automatically resets the alarm 2 circuit after the alarm 2 condition passes. 65-2650RK-04 Transmitter Operator’s Manual Chapter 5: Configuration Mode • 31...
  • Page 32 If set to Disabled, the Auto Zero function is turned off. 4. When you have scrolled through all the adjustable parameters, SAVE IT? YES/NO appears on the display. 32 • Chapter 5: Configuration Mode 65-2650RK-04 Transmitter Operator’s Manual...
  • Page 33 If you wish to save the adjustments made, press and release the UP/YES button. Config Saved is indicated on the display for a few seconds and the M2A returns to normal operation. 65-2650RK-04 Transmitter Operator’s Manual Chapter 5: Configuration Mode • 33...

  • Page 34: Chapter 6: Gas Type Mode

    This chapter describes how to use Gas Type Mode to select the M2A’s gas type. The gas type determines the target gas and detection range. CAUTION: The 65-2650RK-04 M2A is factory setup for methane (CH ). Do not change the Gas Type setting.
  • Page 35 See “Chapter 5: Configuration Mode” on page 30 for a complete description of Configuration Mode. 7. When you have reviewed and accepted the last item in Configuration Mode by pressing the ENTER button, display will ask SAVE IT? YES/NO. 65-2650RK-04 Transmitter Operator’s Manual Chapter 6: Gas Type Mode • 35...
  • Page 36 Since a complete calibration is required, the calibration sequence will proceed without asking if you want to perform certain operations. 36 • Chapter 6: Gas Type Mode 65-2650RK-04 Transmitter Operator’s Manual...

  • Page 37: Chapter 7: Maintenance

    PCB and on the bottom of the terminal PCB. 3. If the power difficulties continue, contact RKI for further instruction. 65-2650RK-04 Transmitter Operator’s Manual Chapter 7: Maintenance • 37...
  • Page 38 6. If the fail condition continues, contact • The detector was RKI for further instruction. exposed to gas during its 2-minute warmup period. • The detector is malfunctioning. • The terminal or display PCB is malfunctioning. 38 • Chapter 7: Maintenance 65-2650RK-04 Transmitter Operator’s Manual...

  • Page 39: Calibration Frequency

    If an application is not very demanding, such as clean, temperature-controlled environments where the toxic or combustible target gas is not normally present, and calibration adjustments are minimal at calibration, RKI Instruments, Inc. recommends the following calibration frequency for the 65-2650RK-04 transmitter: •...

  • Page 40: Calibration

    NOTE: During calibration, the detector must be calibrated with a cylinder of methane in a background of real air containing argon and CO . Only use the RKI-provided calibration cylinder 81-9070RK-03. 40 • Chapter 7: Maintenance 65-2650RK-04 Transmitter Operator’s Manual...
  • Page 41 NOTE: The following procedure assumes that the target gas is present in a high enough concentration to affect the fresh air (zero) reading. If a fresh air environment can be verified, applying zero air to the detector is not necessary when setting the zero reading. 65-2650RK-04 Transmitter Operator’s Manual Chapter 7: Maintenance • 41...
  • Page 42 WARNING: This manual assumes the MPS sensor is operating in a background of fresh air. If the MPS sensor is not operating in a fresh air background (e.g. a monitoring background of nitrogen or argon), consult RKI Instruments Inc. before calibrating the sensor.
  • Page 43 SPAN w/Cal Gas?. NOTE: If setting the zero reading fails, see “Troubleshooting” on page 37 for recommended actions. 11. Leave the sample tubing connected to the regulator and the calibration cup. 65-2650RK-04 Transmitter Operator’s Manual Chapter 7: Maintenance • 43...
  • Page 44 M2A will return to normal operation. 11. Store the components of the calibration kit in a safe place. 12. Unscrew the regulator from the calibration cylinder. 44 • Chapter 7: Maintenance 65-2650RK-04 Transmitter Operator’s Manual...

  • Page 45: Replacing Components Of The M2A

    10. Turn on or reconnect power to the M2A. NOTE: Allow the replacement detector to warm up for 15 minutes before you continue with the next step. 11. Calibrate the replacement detector as described in “Calibration” on page 40. 65-2650RK-04 Transmitter Operator’s Manual Chapter 7: Maintenance • 45...

  • Page 46: Chapter 8: Rs-485 Modbus Output

    The MODBUS terminal strip is located on the terminal PCB (see Figure 2). The following signals are available at the Modbus terminal strip: Table 10: Modbus Terminal Strip Signals Modbus Terminal Modbus Signal Name Label (RS-485 Name) Common 46 • Chapter 8: RS-485 Modbus Output 65-2650RK-04 Transmitter Operator’s Manual...
  • Page 47 An M2A can be wired into an existing M2 Modbus system. The shape of the terminal PCB will be different but the wiring connections are identical and the ground jumper on the M2A must still be removed. 65-2650RK-04 Transmitter Operator’s Manual Chapter 8: RS-485 Modbus Output • 47...
  • Page 48 An M2A can be wired into an existing M2 Modbus system. The shape of the terminal PCB will be different but the wiring connections are identical and the ground jumper on the M2A must still remain installed. 48 • Chapter 8: RS-485 Modbus Output 65-2650RK-04 Transmitter Operator’s Manual...
  • Page 49 ID = 2 ID = 3 ID = 4 ID = 127 Up to 128 M2As can be connected without a repeater Figure 12: Multiple M2As in a Two Branch Configuration 65-2650RK-04 Transmitter Operator’s Manual Chapter 8: RS-485 Modbus Output • 49...

  • Page 50: Using The M2A In A 4-Wire Modbus System

    If the currently displayed parameter setting is OK, press the ENTER button to proceed to the next parameter. Table 11 lists the M2A Modbus Mode parameters you can set. Table 11 also lists the factory set value for each parameter. 50 • Chapter 8: RS-485 Modbus Output 65-2650RK-04 Transmitter Operator’s Manual...
  • Page 51 NOTE: All M2As on a Modbus network must be configured with the same baud rate and parity, and each M2A must have a unique slave ID. For an M2A to participate on a network, the ENABLED/DISABLED setting must be set to ENABLE. 65-2650RK-04 Transmitter Operator’s Manual Chapter 8: RS-485 Modbus Output • 51...

  • Page 52: Supported Modbus Functions

    2 = Normal 3 = Warm-up 4 = Fail 5 = Calibration 6 = Post-Calibration 7 = Low Power 8 = Setup [11] Gas Type Change 0=Not Changed 1=Changed 52 • Chapter 8: RS-485 Modbus Output 65-2650RK-04 Transmitter Operator’s Manual...
  • Page 53 0 = Not Energized 1 = Energized Alarm 2 Relay Status 0 = Not Energized 1 = Energized Alarm 1 Relay Status 0 = Not Energized 1 = Energized 65-2650RK-04 Transmitter Operator’s Manual Chapter 8: RS-485 Modbus Output • 53...
  • Page 54 Register 26 Register 26 is the alarm 1 ON delay. Integer values are in seconds. Register 27 Register 27 is the alarm 1 OFF delay. Integer values are in seconds. 54 • Chapter 8: RS-485 Modbus Output 65-2650RK-04 Transmitter Operator’s Manual...
  • Page 55 This is zero based (e.g. January=0 and the 1st=0). Register 37 Register 37 is the calibration year. Register 38 Register 38 is the calibration outcome. Upper=Gas Operation Lower=Air Operation 65-2650RK-04 Transmitter Operator’s Manual Chapter 8: RS-485 Modbus Output • 55...
  • Page 56 NOTE: Register 40 in Function Code 03, the remote configuration register, must be set to 1 in order for Register 16 to work. Table 14: Register 16, Button Function Value & Field ENTER (used for “Alarm Reset”) 0=Not Pressed 1=Pressed 56 • Chapter 8: RS-485 Modbus Output 65-2650RK-04 Transmitter Operator’s Manual...

  • Page 57: Chapter 9: Parts List

    M2A junction box with foam pad, label, and conduit plug 45-6132RK Termination and ground jumper 61-0230 MPS LEL detector 71-0634 65-2650RK-04 M2A Transmitter Operator’s Manual (this document) 81-0076RK-01 Zero air calibration cylinder, 34 liter steel 81-0076RK-03 Zero air calibration cylinder, 103 liter 81-1050RK Regulator, with gauge and knob, 0.5 liter/minute continuous flow, for 17 liter and 34...

  • Page 58: Appendix A: Control Button Quick Reference Guide

    • Enable or Disable Modbus Modbus Mode Press and Hold DOWN/NO and • Slave ID ENTER for 5 • Baud Rate seconds • Parity • Response Delay 58 • Appendix A: Control Button Quick Reference Guide 65-2650RK-04 Transmitter Operator’s Manual...

  • Page 59: Appendix B: Plc And Dcs Device Wiring

    NOTE: If shielded cable is used for the PWR/SIG connections, leave the cable shield’s drain wire insulated and disconnected at the M2A. You will connect the opposite end of the cable’s drain wire at the controller or device. 65-2650RK-04 Transmitter Operator’s Manual Appendix B: PLC and DCS Device Wiring • 59...
  • Page 60 Alarm 1 Alarm Device Detector Controller Wiring (PLC, DCS) Alarm 2 Alarm Device Modbus W iring Typical Alarm Wiring Shown Figure 13: PLC and DCS Device Wiring 60 • Appendix B: PLC and DCS Device Wiring 65-2650RK-04 Transmitter Operator’s Manual...

  • Page 61: Appendix C: Function Code 16 Registers

    Value must be an integer. Any decimals are omitted. The decimal point location is the same as specified in Register 1 of Function Code 03. Register 8 Register 8 is the alarm 2 trigger. 0=Decreasing 1=Increasing 65-2650RK-04 Transmitter Operator’s Manual Appendix C: Function Code 16 Registers • 61...
  • Page 62 Register 17 Register 17 is the calibration month (MSB) and day (LSB). This is zero-based (e.g. January=0 and the 1st=0). Register 18 Register 18 is the calibration year. 62 • Appendix C: Function Code 16 Registers 65-2650RK-04 Transmitter Operator’s Manual...
  • Page 63 Changed” flag Register 20 Register 20 is the AutoZero Disable. 0=AutoZero Enabled 1=AutoZero Disabled Register 21 Register 21 is the Remote Configuration Register. 0=No Remote Configuration 1=Reset Alarm 65-2650RK-04 Transmitter Operator’s Manual Appendix C: Function Code 16 Registers • 63...

Table of Contents