Ntron Microx Operating Manual

Microx User Manual

Issue Date:

19/03/2019

F/W Ver.:

V233P

The

User Instruction Manual

Oxygen Analyser

Rev.: 1.2

Part Number.: 05-670

Microx User Manual

1 Introduction ................................................................................ 5

1.1 MICROX MODULE ................................................................ 5

1.2 OPERATION ...........................................................................

1.3 SENSOR INPUTS .................................................................. 6

2 Specification ............................................................................... 7

3 MICROX Module ......................................................................... 8

3.1 FUSES................................................................................. 8

3.2 MOUNTING OPTIONS ............................................................ 8

3.3 FIELD CONNECTIONS ........................................................... 9

3.4 RECOMMENDED SAMPLING SYSTEM PIPING #1 .................. 12

(FOR STUB TUBE TYPE SENSOR CONNECTION) ...................... 12

3.5 RECOMMENDED SAMPLING SYSTEM PIPING #2 ........................ 13

3.6 RS232 CONNECTIONS .......................................................... 14

3.7 ANALOGUE OUTPUT ........................................................... 14

4 Software Features .................................................................... 15

4.1 PASSWORD ....................................................................... 15

4.2 MENU OPTIONS AND PASSWORD ASSIGNMENTS ................... 16

4.2.1 Menu 1 – Calibrate sensor ....................................... 18

4.2.2 Menu 2 – Analogue output FSD ............................... 19

4.2.3 Menu 3 – Set 4 mA output ........................................ 19

4.2.4 Menu 4 – Set 20 mA output ...................................... 20

4.2.5 Menu 5 – Analogue Output Simulation ................... 20

4.2.6 Menu 6 – Factory Restore ........................................ 21

4.2.7 No Function ............................................................... 22

4.2.8 Menu 8 - Diagnostics ................................................ 22

4.2.9 Menu 9 – Factory Only .............................................. 23

4.2.10 Menu 10 – Zero offset ............................................... 23

4.2.11 Menu 11 – PPM sensor Gain .................................... 24

4.2.12 Menu 12 – % vol sensor gain ................................... 25

4.2.13 Menu 13 – Sensor damping ..................................... 26

4.2.14 Menu 14 – New sensor data ..................................... 26

4.2.15 Menu 15 – Electronics zero ...................................... 27

4.2.16 Menu 16 – Noise Rejection ....................................... 28

4.2.17 Menu 17 – Relay ........................................................ 29

4.2.18 Menu 18 – Alarm levels ............................................ 30

4.2.19 Menu 19 – Alarm hysteresis..................................... 30

4.2.20 Menu 20 ...................................................................... 31

Microx User Manual

5 Routine Maintenance & Servicing .......................................... 32

5.1 ROUTINE INSPECTION AND MAINTENANCE .......................... 32

Before turning on power to the Analyser and Sensor, ensure that the voltage is correct. See the specification section of this manual for details.

The DIN Rail Mounting Microx Analyser module and Sensor operate with an Extra Low Voltage power source.(ELV) No special personnel protective measures are necessary but it must be ensured that the user connects a suitable power source to the Microx Analyser within the voltage range specified for this product.

The Panel and Wall mount versions can be mains powered (110-240VAC) option at time of order. The user should ensure that any installation and wiring and upstream protective devices are provided in line with the appropriate regulatory requirements.

Zirconia Sensors operate at moderately elevated temperatures and can cause minor discomfort if held in contact with fingers or hands for a number of seconds.

Microx User Manual

Revision Summary

• Implemented Password System (E:20)

• Implemented Factory Restore Function (E:6)

• Implemented View Serial Number facility in

Software via Menu E:8.

Microx User Manual

Rev. 1.2

V233P

Page 5

1 INTRODUCTION

1.1 Microx Module

The MICROX Module has been designed to allow OEM’S (Original Equipment

Manufacturers) to use the module within their own equipment. Typically, the DIN and Panel Mount Microx Analyser would be mounted within a control panel with the sensor connected to the process sample point either within the panel or external to the panel. The Wall Mount version is suitable for mounting in the operational location without further mechanical protection, following a suitable risk survey being undertaken by the user.

Key design features are:

• Compact enclosure

• Simple keypad calibration facility (utilising onboard LCD display).

• 4-20mA current source output for gas level indication (10-bit

resolution).

• Input voltage range, 24VDC Nominal or 110-240 VAC. (Panel and Wall mount versions)

• PCB mounted screw terminals for all connections.

• RS232 output for transmission of live data to a PC.

3.1 Operation

When power is first applied to the Microx module an initialisation procedure is performed as follows:

• All the display segments are displayed

• The software version number is displayed

• The company name is displayed

• The sensor type is displayed

• The display then shows the gas level.

The module is now operational

Microx User Manual

Rev. 1.2

V233P

Page 6

1.2 Sensor Inputs

The Microx Module is designed to interface with any one of the following 3 principal types of sensor technology.

Electro-Chemical Solid State Zirconia Dioxide

A number of different measurement ranges are possible as follows;

0-1000 ppm O2 0-10000 ppm O2 0-25% Vol. O2 0-96% vol. O2

The above list represents standard ranges. Other measurement ranges are possible.

Microx User Manual

Rev. 1.2

V233P

Page 7

2 SPECIFICATION

Supply

Input Voltage

Options:

24V DC nominal.(Good quality power supply) 110-240VAC Panel and Wall mount versions only.

Supply current:

140 mA at 24VDC nominal , all relays energised, 20 mA drawn on current loop.

Outputs

Analogue Output:

4-20mA analogue output (10-bit resolution) Current Source.

Relays (Optional)

Single pole change over. Rating 6 Amps 250 v AC

Fuses

Fuse

500mA anti-surge on board fuse for circuit protection.

Additional Features

Display:

4 Digit, 7 Segment Display.

Keypad:

4-Button Keypad

Dimensions:

See the appropriate diagram on page 7 this manual.

IP Rating

IP20. Wall mount version is IP65.

Terminals

capacities:

0.2-4.0mm Solid wire

0.2-2.5mm Stranded wire

Software:

Software configuration, calibration and data logging provided by PC communications.

RS232 Output

Communications with PC @ 19200 baud.

Microx User Manual

Rev. 1.2

V233P

Page 8

3 MICROX MODULE

3.2 Fuses

A 500mA Anti-surge fuse is fitted to the OEM module, which is connected between the power supply and the OEM module. It is located next to the power input terminals.

3.3 Mounting Options

Din Rail Mounting Version.

Overall dimensions: 86mm(H) x 69mm(W) x 58mm(D).

Panel Mounting Version.

Overall dimensions: 96mm(H) x 96mm(W) x 83mm(D). (including connection Terminals)

Panel cut-out dimensions 91mm(H) x 91mm(W)

Wall Mounting Version

Overall dimensions: 145mm(H) x 110mm(W) x 93mm(D). (including Cable Glands)

Microx User Manual

Rev. 1.2

V233P

Page 9

3.4 Field Connections

All connections to the module are provided in the form of screw terminals. The pin- outs for each Microx version are given below.

Din Rail Mounting version.

View ‘A’

Note:Terminals 1,2 & 3 are for the connection of Electro-Chemical % and Zirconia % or ppm Sensors. Terminals 4 & 5 are for the connection of Electro-Chemical ppm Sensors only. See Sensor for connection details. For Zirconia Sensors, connect the sensor power wires (+ & -) into terminals 14 and 13 of the Analyser along with the Analyser power wiring.

Electrical Interface

Terminals/connections as per view ‘A’

Microx User Manual

Rev. 1.2

V233P

Page 10

Panel and Wall Mount Versions - DC Supply option.

(Terminals located at the rear of the Module, identified as below as viewed)

View ‘A’

Electrical Interface

Terminals/connections as per view ‘A’

No Connection

Supply by Customer

24V

Note: Additional Terminals fitted on Wall Mount DC version with Zirconia Sensor.

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