DF-TV7 IR3 Flame Detector (SIL3)

The MultiFlame DF-TV7–T is a multi-spectrum infrared flame detector using three wavelengths. The MultiFlame DF-TV7-T responds to hydrocarbon fires and is the right choice for operation in dirty environments or for detection of smoky fires.  



Technical Description – Simtronics DF-TV7 IR3 Flame Detector

The Simtronics MultiSpectrum DF-TV7 Triple IR flame detector is designed to respond to unwanted hydrocarbon fires, whilst maintaining a high degree of false alarm immunity. The IR3 Multi Flame device offers a wide range of output options, as standard and is suitable for use in SIL3 applications 

A Closer Look

  • Continuous auto-check of optical lens  
  • Relays, 4-20mA, 0-22mA, Hart outputs  
  • Long range up to 80m, 260 ft deep 
  • Wide field of view 120° 
  • SIL3 

All Simtronics Multi Spectrum IR3 Flame detectors are equipped with a continuous optical lens integrity auto-check to ensure that the optical path is clear and that the detector functions properly. Sensors can be replaced easily in the field without removing any cable glands. 

DF-TV7 UVIR2 Flame Detector (SIL2)

Control System Integration

The DFTV7 may be interfaced directly with a wide range of fire panels, controllers and PLC’s etc. The flame detector unit is fully configurable using a wireless hand-held terminal (TLU) or optionally via HART (R) giving true flexibility to the installer. Time delays, sensitivity and output configuration are all set up via the TLU; a hazardous area approved hand-held unit. Wireless testing of the optical and output circuits is also possible using the TLU. 

The Specs at a Glance

Technology Multi-spectrum Infrared, 3IR 

Fire TypesHydrocarbon fires 

Range, n-heptane 80m (260ft) 0.3×0.3m (1 sq ft) 

Range, gasoline 65m (21 0ft) 0.3×0.3m (1 sq ft) 

Field of viewMaximum horizontal angle 1 20° 

Horizontal angle @ 50% 1 04° 

Vertical angle @ 50% 82° 

Response time Adjustable from 3 to 20 seconds (typical 6s. ) 

Warranty 3 years, back to factory 

Output signal 

Standard4-20mA or 0-22mA (configurable by the user) 

Max. load impedance 700M (Std.) 

HART Protocol 7th edition (option) 

Alarms 2 x configurable Relays max 1 A / 30Vcc 

Visual Normal Operating, alarm, fault 


Power supply 24 Vdc, range (18 – 28 Vdc) 

Power consumption 2W normal; 4W during test 

Connection 0.3 mm2 (22 AWG) – 1 .5 mm2 (1 6 AWG) Shielded cable recommended 


Storage -40°C to +70°C (-40°F to 158°F) 

Operation -40°C to +65°C (-40°F to 149°F) 

Options Sunshade, max. temp. 85°C (185°F) 

Humidity 99% RH (non-condensing) 

Ingress IP66 

RFI /EMI Complies with EN50130-4 

Explosion proof housing 


Weight 5KG (10 LBS) 

Dimensions 246.8 x 140.4 x 1 1 5 mm (L, H, W) 

9.8 x 5.5 x 4.5 inches 

Data Sheet – DF-TV7 IR3 Flame Detector (SIL3)

Data Sheet – DF-TV7 IR3 Flame Detector (SIL3)

Mounting Bracket Dimensions

Hover Box Element

Certificate of Registration HCF Verified

Hover Box Element

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Wireless Configuration Tool

Hover Box Element

LT15 Test Lamp for DMTV Series

Hover Box Element