The EI instrument measurement and control YFD-7-2122H fire detection probe / flame detector is a microprocessor device using a solid flame detection sensor. It has an internal relay that automatically sets the ON/OFF threshold, so the remote amplifier or flame switch can be eliminated.

　　The YFD-7-2122H detects the modulation amplitude (ie, the flickering characteristic) produced by the target flame and detects a wide frequency. In the probe setup procedure, the amplitude of the target flame will be automatically stored along with the optimal ON/OFF value. The corresponding sensor gain will also be automatically selected. The probe combines all self-diagnosis and electronic self-test functions.

　　The YFD-7-2122H fire detector/flame detector requires 24Vdc power supply, is connected to the cable through an 8-pin electrical quick connector, and has a standard 4-20mA flame intensity signal output.

　　YFD-7-2122H fire detection probe / flame detector [European measurement and control]

　　[European measurement and control YFD-7-2122H fire detection probe / flame detector mechanical parameters]:

　　Mechanical parameters: YFD-7-2122H (fire detector / flame detector)

　　Shell material: Engineering material – fiberglass filled with nylon resin

　　Probe weight: 1.5 kg

　　Mounting flange:

　　Standard, non-metallic, 1" NPT female connector with 3/8" NPT internal thread cooling air connection.

　　Optional, aluminum, 1" NPT kit accessory;

　　[European measurement and control YFD-7-2122H intelligent integrated flame detector environmental parameters]:

　　Temperature range: -40°C -- +65°C

　　Humidity range: 0% -- 95% relative humidity, no condensation

　　[European measurement and control YFD-7-2122H fire detection probe / flame detector cooling parameters]:

　　Cooling / Purge requirements:

　　Source: clean, dry, low temperature

　　Air volume:

　　113 l/min, accessed by a 3/8-inch threaded connection on the mounting flange or by a 1-inch connection on the “Y” tee attached to the front of the probe.

　　When the ambient temperature is near the upper limit of the probe operating temperature or / while the fuel is not very clean, the air volume needs to be increased to 425 liters / minute.

　　Pressure: Exceed the furnace or bellows pressure

　　[European measurement and control YFD-7-2122H fire detection probe / flame detector electrical parameters]:

　　Input power: 24 Vdc (+10%, -15%), supply current 200 mA

　　Electrical connection: 8-pin quick connector

　　Relay output: Flame relay, SPST (N.O.)

　　Fault relay, SPST (N.C.)

　　Contact capacity: Minimum: 10 mA @ 5 Vdc

　　Maximum: 2 A @ 30 Vdc, 2 A @ 230 Vac (requires resistive load)

　　Analog output: 4 -20mA DC output, connected to 24Vdc common terminal, maximum connection load: 750 ohms.

　　Status display: Multi-digit LED displays flame signal strength, flame relay status, ready status, target flame status, backlight selection and fault code.