Sintrol Snifter mA Manuel utilisateur

Sintrol Snifter mA+ EX RF

Manual

Version 1.2.3

Snifter mA+ EX RF User Manual 2

Table of Contents

1INTRODUCTION.......................................................................................3

1.1 Safety......................................................................................................... 3

1.2 Product overview....................................................................................... 4

1.3 How does it work? ..................................................................................... 4

2INSTALLATION.........................................................................................4

2.1 Selecting the installation location .............................................................. 4

2.2 Installing the sensor ................................................................................... 6

3WIRING ..................................................................................................7

4TECHNICAL SPECIFICATION ......................................................................8

5DIMENSIONS......................................................................................... 10

6OPERATION .......................................................................................... 11

6.1 The alarm threshold factory setting values:.............................................. 11

7ADJUST PARAMETERS............................................................................ 13

7.1 Signal averaging time ............................................................................... 13

7.2 Alarm level settings.................................................................................. 13

7.3 Alarm delay time...................................................................................... 13

7.4 Alarm hysteresis time............................................................................... 13

8AUTO-SETUP......................................................................................... 14

8.1 How to do the auto-setup? ...................................................................... 14

9MAINTENANCE...................................................................................... 15

10 TROUBLESHOOTING .............................................................................. 15

10.1 No output signal................................................................................. 15

10.2 No response after auto-setup............................................................. 15

10.3 Boot check.......................................................................................... 16

11 Appendix A: Sintrol PC software............................................................. 17

11.1 DustTool............................................................................................. 17

Preview .............................................................................................. 17

11.2 DustLog .............................................................................................. 21

Snifter mA+ EX RF User Manual 3

1INTRODUCTION

This manual describes how to install and use SINTROL’s Snifter mA+ EX RF dust

monitor. Sintrol shall not be liable for any loss or damage whatsoever arising from

use of any information or details therein, or omission or error in this manual, or

any misuse of the product.

The instrument can be accessed by utilizing the DustTool Software.

The basic functionality of DustTool is to change the factory settings according to

individual needs of the process.

Such functions for Snifter mA+ EX RF are for example:

•Perform the auto-setup according to process typical dust levels.

•Change the Alarm Limits and the logic of signals.

•Set 4 - 20mA output levels

The Software can be downloaded free of charge under the Sintrol web-site

http://www.sintrolproducts.com

1.1 Safety

Snifter mA+ EX RF requires 12 - 24 VDC power supply. Although these voltage

levels are considered safe, the process gas or dust particulates can be hazardous to

health.

The Snifter is designed for explosive environments fulfilling following ATEX and EX

requirements. The sensor can be installed in EX and Atex zones 22.

IECEx VTT 14.0001X

Ex tc IIIB T 80°C Dc

Atex 22 VTT14 ATEX 001 X

CE II 3 D

EX tc IIIB T 80°CDc

Take appropriate precautions when installing the monitor:

Unless the process conditions are known to be entirely safe, suitable

precautions must be taken before any entry is made into the duct for

installation or maintenance purposes.

Snifter mA+ EX RF User Manual 4

·The unit may be installed in ducting, containing particulate, hazardous to

health.

·The particulate may be inflammable, explosive or toxic

·The gas can be hot and pressurised

1.2 Product overview

The Snifter mA+ EX RF Dust monitor is a microprocessor-based, self-adjusting

device, equipped with two independent and fully adjustable alarm signal, isolated

4 –20 mA output loop and back light illuminated front cover.

The device is designed for filter bag leak detection and continuous filter condition

management. It can also be used to detect blockage or stoppage in pneumatic

transport and bulk solids handling. It is a compact unit with the sensor and control

electronics built into one IP65 enclosure, which has been specifically designed for

easy installation and operation.

1.3 How does it work?

The Snifter mA+ EX RF uses Sintrol’s proven and reliable inductive electrification

technology where the interaction of particles with the sensor rod causes a small

electrical charge to pass between the particulate and sensor.

It is this small electric charge that provides the signal monitored by the electronics,

the signal generated is proportional to the dust level even if particles accumulate

on the sensor. Experience has shown that this method of monitoring dust level in

gasses, offers accurate results with minimum maintenance.

2INSTALLATION

2.1 Selecting the installation location

The best location for installation is in a section of duct where the particulate has an

even distribution and the flow is as laminar as possible. This is to ensure that the

sensor rod comes into contact with a representative flow of particles.

The ideal position would be in a section of duct that has no bends, valves, dampers

or other obstructions for a distance equal to at least three duct diameters

downstream or upstream (preferable 5 x duct diameter).

Description of installation is presented in Figure 1 Recommended distance to duct

bends (D = Duct diameter).

Snifter mA+ EX RF User Manual 5

Figure 1 Recommended distance to duct bends (D = Duct diameter)

In some applications, a compromise must be made and the sensor will have to be

fitted in a position that satisfies the majority of above requirements. The Snifter

mA+ EX RF must be attached to metal ductwork so that the device will be

electrically shielded from interference and has good ground reference.

1. The unit shall be installed in a position, where the gas flow passes the

sensor rod in a 90°angle.

2. In round cross-section ducts, the unit can be installed in any position above

the horizontal axis (between 9 o’clock and 3 o’clock). See Figure 2

3. For square cross-section ducts, the unit must be positioned in the middle of

the top or in the middle of one of the sides. See Figure 3

4. Although the sensor is not affected by vibration, very high vibration levels

should be avoided.

5. The units must not be installed in direct sunlight or in areas where the

ambient temperature is above +40 °C.

Snifter mA+ EX RF User Manual 6

Figure 2 Round cross section duct Figure 3 Square cross section duct

NOTE

The sensor must not contact the opposite wall or any other obstacle inside the

duct. The only allowed interaction with sensor is dust particles.

2.2 Installing the sensor

Once the location of the unit has been selected, the Snifter mA+ EX RF with NPT

1/2”male thread can be installed to process with 1/2”female thread. Make sure

the installation is in the right position, insert the sensor inside the adapter and

rotate the unit until the connection is tight.

NOTE

Do not over tighten the Snifter mA+ EX RF with process connection - It may cause

damage to sensor and electronics.

The mounting

socket in the

middle of the side

The unit above

horizontal axis

Snifter mA+ EX RF User Manual 7

3WIRING

The Snifter mA+ EX RF comes with two meter power and signal cable. There are 12

wires in the same cable, two wires for VDC power source, two for alarm signals,

and one for automatic setup signal. Remaining wires are left for digital

communication with Sintrol Dustlog software.

Connect the VDC power supply to pink (+) and GND to gray (-) wires. Blue and red

wires are for alarm signals and they give the same voltage levels as power input

voltage, when the alarm latches to high state.

PCB pin Wire colour Signal name

1 BLUE Alarm signal 1

2 RED Alarm signal 2

3 BLACK 4 –20 mA +

4 YELLOW 4 –20 mA -

5 GRAY V- (GND)

6 PINK V+ (VDC)

7 GREEN Automatic setup

8 BROWN RS 485 D+

9 WHITE RS 485 D-

10 BLUE/RED USB DM

11 GRAY/PINK USB DP

12 VIOLET USB VBUS

Table 1 Wiring and signals

Snifter mA+ EX RF can be powered by using only USB connection for the purpose of

accessing and adjusting parameters with appropriate Sintrol PC software. More

information about parameter adjustment can be found in section 7 of this manual.

Snifter mA+ EX RF User Manual 8

4TECHNICAL SPECIFICATION

Product name Snifter mA+ EX RF

Measurement Objects Solid particles in a gas flow

Particle Size 0.3 µm or larger

Measurement Range From 0.1 mg/m³

Measurement Principle Inductive Electrification

Protection Category IP65

Sensor Length (total/measuring) 250 mm / 185 mm

Power Supply 12-24 VDC

Power Consumption 3 W

Cable Connection 2 meter cable, 12 wires

Process Connection NPT 1/2" male thread

Output Signals

·Two output signals (100 –280 mA)

·Isolated 4 - 20 mA output loop

·Back light illuminated front cover

Communication Interface

·Serial communication RS-485

·USB

·Radio frequency (RF) (optional)

Communication Protocol

·Modbus RTU (RS-485)

·SNT network (USB, RF and RS-485)

Alarm settings

·Set automatically by auto-setup based on

average measured dust flow: 5 times and

20 times of reference dust flow.

·User selectable

Signal Averaging Time •Default at factory, 100 s

Snifter mA+ EX RF User Manual 9

Adjustable from 0 –6000 s

Alarm delay time

•Default at factory, 30 s

•Adjustable from 0 –60 000 s

Alarm hysteresis time

•Default at factory, 0s

•Adjustable from 0 –25 s

Process Conditions

Temperature

Max 250 °C

Pressure Max 200 kPa

Gas Velocity Min 3 m/s

Humidity Max 95 % RH (non-condensing)

Ambient Conditions

Staring temperature

-20...+40 °C

Running temperature

-40...+60 °C

Humidity Max 95 % RH (non-condensing)

Materials and Weight

Probe (wetted part)

Stainless steel (AISI 316L)

Process Connection (wetted part) Stainless steel (AISI 316L)

Enclosure Aluminum

Probe Insulation (wetted part) PEEK

Weight 0.6 kg

Table 2 Technical specification

Snifter mA+ EX RF User Manual 10

5DIMENSIONS

Figure 4 Structure and dimensions

This instrument conforms to the following standards

Product standard -

electrical equipment for

measurement, control and

laboratory use –

EMC requirements

Reference standard

IEC 61326-1:2005 (First Edition)

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