Qel QIRF User manual

QIRF
REFRIGERANT GAS
TRANSMITTER/SENSOR
INSTALLATION
OPERATION AND MAINTENANCE
MANUAL

QIRF Operation And Maintenance Manual
QIRF Operation Manual May. 01, 2012
85050-301-000 Rev
1
Table Of Contents
READ BEFORE OPERATING ...................................................................................................................3
. GENERAL INFORMATION .............................................................................................................3
1.1 PRINCIPLE OF OPERATION ..................................................................................................................3
1.2 KEY FEATURES ..................................................................................................................................4
1.3 APPLICATIONS....................................................................................................................................4
1.4 SPECIFICATIONS .................................................................................................................................5
2. INSTALLATION .................................................................................................................................7
2.1 SENSOR LOCATION.............................................................................................................................7
2.2 PHYSICAL DIMENSIONS ......................................................................................................................7
2.3 GAS SAMPLING ..................................................................................................................................8
2.4 MOUNTING AND SYSTEM WIRING ......................................................................................................8
2.4.1 Terminals......................................................................................................................................9
2.4.2 Power Supply................................................................................................................................9
2.4.3 Wire and Cable...........................................................................................................................10
2.4.4 Digital Conne tion .....................................................................................................................10
2.4.5 RS-485 Terminator.....................................................................................................................10
2.4.6 RS-485 Driver Repla ement.......................................................................................................11
2.4.7 4-20mA or 2-10VDC Analog Output..........................................................................................11
2.4.8 Relays Output .............................................................................................................................12
3. FUNCTION AND CONFIGURATION ........................................................................................... 3
3.1 QIRF WORKING MODE....................................................................................................................13
3.2 SYSTEM INITIALI ATION...................................................................................................................13
3.3 KEYPAD ...........................................................................................................................................13
3.4 STATUS LED....................................................................................................................................15
3.4.1 RS485-TX/RX:..........................................................................................................................15
3.4.2 Relay1-3 LED: ..........................................................................................................................15
3.5 LATCHED RELAY RESET...................................................................................................................15
3.6 HUSH BU ER AND HORN................................................................................................................15
3.7 QIRF MAIN MENU TREE .................................................................................................................15
3.8 MENU “1_SYSTEM SETTING” ...........................................................................................................17
3.8.1 System Settings ...........................................................................................................................18
3.9 MENU “2_ EROING CALIBRATION”..................................................................................................20
3.9.1 Equipment Required ...................................................................................................................20
3.9.2 Zeroing Calibration Pro edure..................................................................................................20
3.10 MENU “3_SPAN CALIBRATION” .......................................................................................................22
3.10.1 Span Calibration Pro edure..................................................................................................22
3.11 MENU “4_OUTPUT TESTING”...........................................................................................................23
3.12 MENU “5_SITE SERVICE".................................................................................................................23
3.13 MENU “6_RELAY DATABASE” .........................................................................................................24
3.13.1 Relay Configurations.............................................................................................................24
3.13.2 Relay Database Flow Chart ..................................................................................................26
3.14 MENU “7_A-OUT DATABASE”.........................................................................................................27
3.15 MENU “8_BU ER DATABASE” .......................................................................................................28
3.16 MENU “9_OUTPUT DISABLE”...........................................................................................................28
3.17 MENU “10_SIMU DISABLE” .............................................................................................................28
4. MODBUS PROTOCOL SUPPORTED BY QIRF..........................................................................28
5. MAINTENANCE...............................................................................................................................29

QIRF Operation And Maintenance Manual
QIRF Operation Manual May. 01, 2012
85050-301-000 Rev
2
5.1 DVM CONNECTION FOR 4-20MA MEASUREMENT ...........................................................................29
5.2 4MA AND 20MA OUTPUT CALIBRATION ..........................................................................................29
6. TROUBLESHOOTING ....................................................................................................................30

QIRF Operation And Maintenance Manual
QIRF Operation Manual May. 01, 2012
85050-301-000 Rev
3
READ BEFORE OPERATING
All individuals who have or will have the responsibility of using, maintaining, or
servicing this product must carefully read this manual. The product will perform as
designed only if it is used, maintained, and serviced in accordance with the
manufacturer’s instructions.
1. General Information
1.1 Principle of Operation
The QIRF Smart Sensor is a microprocessor controlled Refrigerant gas Sensor or
Transmitter using infrared sensing technology. The concentration of Refrigerant is
measured by determining the amount of absorption of light in a specific frequency band.
As most gases have their characteristic spectra in the infrared. Those spectra derive from
the molecule's composition in such a way that no two molecular gases have the same IR
spectrum. IR spectra are the fingerprints of gases, and thus allow gases to be uniquely
identified.
By transmitting a beam of IR radiation through the air, or through any particular gas
volume, and recording how much is transmitted at selected spectral lines, one may decide
which gases are present and how much of each. This is a standard and well-proven
principle, routinely used in laboratory analyses of chemical species, and is also the basis
on which our sensors are made.
An IR detector is essentially a temperature sensor and is, therefore, potentially very
sensitive to changes in the ambient temperature. However, our QIRF smart sensor
modules do it better, faster, and more precisely. The QIRF smart sensors are entirely
electronic with no moving parts, and are built around our unique QT Gas Sample Cell
with constant temperature control integrated with IR Source and IR Detector together.
This makes our IR smart sensors work from -45°C to 65°C without being susceptible to
ambient temperature fluctuations.

QIRF Operation And Maintenance Manual
QIRF Operation Manual May. 01, 2012
85050-301-000 Rev
4
Comparing with conventional gas detector, gases to be detected are often corrosive and
reactive. With most sensor types, the sensor itself is directly exposed to the gas, often
causing the sensor to drift or die prematurely. The main advantage of IR sensor or
transmitter is that the detector does not directly interact with the gas (or gases) to be
detected. In the QIRF Smart Sensor, the major functional components are protected with
optical parts. In other words, gas molecules interact only with a light beam. The IR
Source and IR Detector can be treated, making them resistant to corrosion, and are
designed such that they are easily removable for maintenance or replacement.
1.2 Key Features
• Infrared Sensing Technology
• Constant Temperature QT Gas Sampling Cell
• Standard RS-485 Output with OptoMux protocol and ModBus protocol
• Standard 4-20mA or 2-10VDC Analog Output
• Diffusion Sampling module or Pump-thru module
• No moving parts in diffusion or pump-thru model
• Water and corrosion resistant PVC enclosure NEMA 4, 4X
• Addressable from 0 to 31
• 4 magnetic sensors as keypad input
• 3 programmable Relays and 3 programmable Buzzers
• 2 x 8 character LCD display c/w backlight
• Operation at 18-30VDC or 15–24VAC
• 3 Relay Status LED, TX Status LED and RX Status LED
• CSA/UL approval (pending)
1.3 Applications
The QIRF is designed to monitor for the loss of refrigerant gas in a variety of
applications:
• Mechanical equipment rooms
• Propellant filling operations
• Solvent cleaning stations
• Cold storage and transport facilities
• Meat packing plants
• Supermarkets and refrigerant storage locations
• Other specialty applications using halocarbons