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
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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

QIRF Operation And Maintenance Manual
QIRF Operation Manual May. 01, 2012
85050-301-000 Rev
5
1.4 Specifications
Input Power: 24VDC nominal, range 18 to 30VDC, 1.0A DC Total Max.
24VAC nominal, range 15 to 24VAC, 1.0A AC Total Max.
Fuse: F1 on Display Board: Polyswitch 1.6A
F2 on Display Board: Polyswitch 50mA
Polyswitch device resets after the fault is cleared and power
to the circuit is removed
Sensor: Infrared Refrigerant
Gas Detected: User selectable: R11, R12, R22, R114, R123, R134A,
R402A, R404A, R407C, R408A, R409A, R410A, R422A,
R438A, R507A
Available on special order: R13, R14, R21, R23, R31, R32,
R41, R113, R115, R116, R125, R143a, R152, R161 …
Range: 0 to 100ppm for R123; 0 to 1000ppm for others
Accuracy: ±3% of reading
Repeatability: ±1% of full scale
Sampling: Diffusion or Pump-through
Panel Indicators: 5 Status LED’s
• RS-485 TX Status (Green)
• RS-485 RX Status (Green)
• Relay1 Status (Red)
• Relay2 Status (Red)
• Relay2 Status (Red)
Display: 2 x 8 character display c/w backlight
Keypad: 4 magnetic sensors with Magnet tool
Relays: 3 Relays SPDT, Dry contacts
• 1.0A maximum at 30 VDC (resistive load)
• 0.3A maximum at 125VAC (resistive load)
Buzzer: 80 db at 10 cm, 2700 Hz
Buzzer 1: Double-tap Intermittent
Buzzer 2: Intermittent 50% duty cycle
Buzzer 3: Continuous

QIRF Operation And Maintenance Manual
QIRF Operation Manual May. 01, 2012
85050-301-000 Rev
6
Output Signal: RS-485 with OptoMux protocol
• Available Controller: M-Controller
Q4 Controller
RS-485 with ModBus protocol
4-20mA or 2-10VDC Analog Signal
Enclosure Rating: IP 66 & NEMA 4, 4X, 12 & 13
Cover Screws should be torqued to 2.5lbs-in (30cN-m)
Operating Temperature: -45°C to 65°C
Ambient Humidity: 5% to 95% RH (non-condensing)
Storage Temperature: -45°C to 70°C
Size: 200mm X 120mm X 90mm
Weight: Less than 1.5lbs (0.680 kg)

QIRF Operation And Maintenance Manual
QIRF Operation Manual May. 01, 2012
85050-301-000 Rev
7
2. Installation
2.1 Sensor Location
Several factors should be considered when selecting locations to install sensors. The
following general suggestions should be considered to assure the detection of the target
gas. Select the most suitable location for each sensor.
1. Air Currents: If there are fans, winds, or others sources of air movement, gases may
tend to rise or collect in certain areas of a facility. The local air currents should be
assessed to aid in selecting the sensor location. In outdoor situations considerations such
as prevailing winds should be accounted for. Air convection can often be more important
in determining gas concentrated areas than factors of Vapor Density.
2. Vapor Density: R11, R22, R123 and R134A are heavier than air. Detecting location
should be 9 - 18 inch (0.23m to 0.46m) above the floor.
3. Gas Emission Sources: As a rule, at least one sensor should be located in close
proximity to each point where a leak is likely to occur. This is particularly important
when a liquid having a low volatility is monitored.
4. Environmental Factors: Designed to rugged outdoor use consider the following in
selecting locations. Install sensors where they will be protected from wind, dust, snow,
water, vibration and shock.
2.2 Physical Dimensions

QIRF Operation And Maintenance Manual
QIRF Operation Manual May. 01, 2012
85050-301-000 Rev
8
2.3 Gas Samplin
In Diffusion version QIRF, the gas sampling system is composed of a diffusion type gas
sample chamber and two vent holes on the enclosure bottom. The gas flows in and out
through the two vent plugs on the bottom of the QIRF enclosure. See above picture.
In Pump-thru version QIRF, the sampling gas is pumped through the fitting on the bottom
of the QIRF enclosure, and passed through the gas chamber, then exhausted out though
the fitting on the right side of the enclosure. Pump-thru version QIRF doesn’t have
pump inside. For gas sampling and conditioning unit, QEL provides SCS-1 (One channel
sampling and conditioning system).
2.4 Mountin and System Wirin
NOTE: The Diffusion version QIRF should be mounted foot (30cm) from the
floor.

QIRF Operation And Maintenance Manual
QIRF Operation Manual May. 01, 2012
85050-301-000 Rev
9
2.4. Terminals
Display Board Terminals
2.4.2 Power Supply
NOTICE: Installing or using this equipment in a manner not specified by the
manufacturer could cause electric shock, bodily injury, or risk of fire.
Power Supply:
Voltage: 15-24VAC 50/60Hz 1.0A AC Total max.
18-30VDC 1.0A DC Total max.
Note: AC Power Supply must be non-grounded (floating).
Note: No external over-current protection is required. Over-current protection is
provided by means of fuses F .
Fuse F1: PolySwitch 1.6A