Duomo HCF100 Operation

Duct refrigeration gas sensor

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HCF100 Duct
HCF100 Duct Refrigeration Gas Sensor
4-20mA
IP55
FEATURES
Freon Gas detection sensor
Semiconductor sensor Technology
4-20mA signal sensor output
Automatic Calibration
Sintered Head
IP66 Protective Rating
CE Certified and approved to EN50270, EN 378-1, (EU) No
517/2014 of the European Parliment and the Council of 16th
April 2014
2 Year Guarantee - 3 Year by Registering at duomo.co.uk
APPLICATION
Duomo is recognised within the gas industry for providing a
comprehensive range of low cost, high reliability gas detection for
many applications. We have installed and commissioned natural
gas and carbon monoxide sensors in applications such as boiler
rooms, kitchens, car parks and plant rooms. The HCF100 is the
freon gas sensor used with the complete range of Duomo detector
panels. All Duomo products are manufactured to meet relevant
European Normatives and proposals for explosive and toxic gases.
OPERATION
When the HCF100 senses the presence of freon gas it sends a
4 - 20mA signal to the detector proportional to the level of gas. The
detector then operates a pre-alarm relay used for remote sirens or
visual indicators if the level of gas continues to rise. The main alarm
relay is activated to break the electrical supply to a safety shut off
valve, and is fixed at 300ppm of freon R134a.
The HCF100 is controlled by a microprocessor. This conducts
both self diagnostics and automatically calibrates the sensor when
ambient conditions vary, thus avoiding false alarms.
t: 01905 797989
e: sales@duomo.co.uk | w: www.duomo.co.uk
Freon
SPECIFICATION
Power
Power Supply
Power Consumption
Technical Specification
Gas(es) Detected
Sensor Technology
Dimensions
LED indicator
Mounting
Output Signal
Device Precision
Autosetting
Working Temperature
Protective Rating
Perhipheral Specification
Maximum Sensor Distance
Cable Diameter for Sensors
Compatibility
Controller Compatibility
Calibration Gas Compatibility
Approvals, Certifications and Guarantee
Approvals
Guarantee
1
12-24V DC ± 10% from controller
120mA at 13.8V
Freon Gas
Semiconductor
Width 76mm | Height 176mm | Depth 57mm
Green: Power ON
Wall Mounted OR Duct Mounted versions
4-20mA
1% FS
Yes
-10°C to 60°C
IP66
100m
1mm
CSA
2
(Screened and earthed at the controller end)
All Conventional Duomo Controllers
(Not Addressable BXI32)
Duomo test Gases
CE Certified and approved to EN50270, EN 378-1, (EU)
No 517/2014 of the European Parliment and the Council
of 16th April 2014
2 Year as Standard
3 Year by Registering at www.duomo.co.uk

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Summary of Contents for Duomo HCF100

  • Page 1 European Normatives and proposals for explosive and toxic gases. OPERATION When the HCF100 senses the presence of freon gas it sends a 4 - 20mA signal to the detector proportional to the level of gas. The detector then operates a pre-alarm relay used for remote sirens or visual indicators if the level of gas continues to rise.
  • Page 2: Important Notes

    When doing the electrical connections, follow the drawing closely. Any use of the detector for purposes other than the intended one is considered improper and as a result of which Duomo (UK) therefore disclaims any responsibility for possible damages caused to people, animals or objects.
  • Page 3: Connecting Terminal

    Overall Dimensions HCF100 Duct (mm) 100mm 57mm 245mm 72mm Not to scale Connections and LED indicator Connecting Terminal Power ON LED Diagnostic port CONNECTING TERMINAL 1. Positive Supply Voltage 2. 0V 3. Return Sensor Voltage 4. Relay common 5. Relay output POWER ON LED This LED illuminates Green when power is ON and the sensor has a power supply from the controller.
  • Page 4: Compatible Controllers

    Main Alarm Main Alarm Main Alarm Monitoring Positive Safety IP Rating IP42 IP44 IP44 IP44 IP44 IP65 Extended Guarantee * 3 Year 3 Year 3 Year 3 Year 3 Year 3 Year t: 01905 797989 e: sales@duomo.co.uk | w: www.duomo.co.uk...
  • Page 5: Sensor Positioning

    When replacing sensors never seperate a sensing head from its PCB. The sensor will have been calibrated using this particular board and therefore will not function correctly with any other. Do not test this sensor with anything other than Duomo test gas. Concentrations above this will damage the sensor and shorten sensor life.
  • Page 6: Troubleshooting

    This is a working document and will be updated as new troubleshooting and FAQs become apparent. If your issue is not listed here please call Duomo (UK) on 01905 797989 and inform us so we can list your issue and associated solution here.
  • Page 7 It is prudent to make electrical connection to the detector terminal plus when withdrawn and leave the plug off the detector so that the Duomo Engineer is the first to power up the unit on site. This allows wiring to be checked prior to commissioning and avoids damage due to incorrect connection.
  • Page 8 HCF100 Duct 10022023 rev1 This document is protected by copyright © No changes by others are permitted without prior authorisation by Duomo (UK) Ltd. Duomo (UK) Ltd reserve the right to modify and revise this datasheet without notification. 01905 797989 www.duomo.co.uk sales@duomo.co.uk...

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