Honeywell R7847A1025/U R7847A Ultraviolet Flame Amplifiers for 7800 SERIES and R7140 Relay Modules

• Customization: Available
• Manufacturer: Honeywell
• Product Condition: Origianl New
• Model NO.: R7847A1025/U
• Part Number: R7847A1025/U
• Humidity: Operating 85% rh continuous, noncondensing
• Ambient Temperature: -40°C to 60°C
• Weight: 2.5 oz (71 g), unpacked
• Transport Package: Carton
• Trademark: Honeywell

Product Description

The R7847A,B Rectification Flame Amplifiers are solid state plug-in amplifiers that respond to a rectified signal from a rectification type flame detector to indicate the presence of flame when used with 7800 SERIES Relay Modules.

 

FEATURES

• Flame failure response time (FFRT) of 0.8 or 1 second; or 2.0 or 3.0 seconds, depending on the amplifier and relay module selected. See Table 1.

• Plug-in to 7800 SERIES Relay Module through printed circuit board edge connector keyed for proper orientation.

• Flame signal test jacks measure amplifier flame signal voltage.

• 0.0 to 5.0 Vdc Flame signal strength reading range.
• Color coded label identifies flame detection type:
-Green: rectification.
- Red: infrared.
- Purple: ultraviolet.
- Blue: pulsed rectification.
- White: optical.
• R7847B, R7848B, R7849B, R7851B, R7852B Dynamic Ampli-Check® circuitry tests all flame amplifier components 12 times per minute. The 7800 SERIES / R7140 Relay Module locks out on safety shutdown with amplifier failure.
• R7824C, R7847C Dynamic Self-Check Rectification Amplifier, R7851C Dynamic Self-Check Optical Flame Amplifier, R7861 Self-Check Ultraviolet Flame Amplifier and R7886A Dynamic Self-Check Ultraviolet Amplifier test the detectors and all electronic components in the flame detection system 12 times per minute. The 7800 SERIES and R7140 Relay Module locks out on safety shutdown with flame detection system failure.
NOTE:
R7824C, Series 2 or greater, and R7847C, series 4 or greater, pulse shutter when signal of 1.5 Vac is sensed.
 

SPECIFICATIONS

Models:

Flame Detection Systems:

Rectification:

R7824C for use with C7024E,F Solid State Ultraviolet Detectors.

R7847A,B for use with flame rods, rectifying photocells or C7012A,C Solid State Ultraviolet Detectors.

R7847C for use with C7012E,F Solid State Ultraviolet Detectors.

Infrared:

R7848A,B for use with C7015 Infrared (lead sulfide) Detector.

R7852A,B for use with C7915 Infrared (lead sulfide) Detector.

Ultraviolet:

R7849A,B for use with C7027/C7035/C7044 Minipeeper Ultraviolet Detectors.

R7851C for use with C7961E,F Flame Detectors.

R7861A for use with C7061A,F Ultraviolet Detector.

R7886A for use with C7076A,D Ultraviolet Detectors with adjustable sensitivity.

Optical:

R7851B for use with C7927 and C7962 Flame Detectors.
 

Flame Signal (Volts dc):

Minimum Acceptable: 1.25 Vdc.

Flame Signal Voltage Range (displayed on Keyboard Display Module or measured with a 1M ohm voltmeter plugged into amplifier test jacks): 0.0 to 5.0 Vdc.

Environmental Ratings:

Ambient Temperature:

Operating: -40°F to 140°F (-40°C to 60°C).

Storage: -40°F to 150°F (-40°C to 65°C).

Humidity: Operating 85% rh continuous, noncondensing.

Vibration: Continuous 0.5G environment.

 

Plug-in Flame Signal Amplifiers				Applicable Flame Detectors
Type	Color	Self-Checking	Model	Flame     Failure Response Time (sec)a	Fuel	Type	Models
Rectification	Green	Dymanic Self- Check	R7824Cb,c,h	3	Gas, oil, coal	Ultraviolet (Purple Peeper®)	C7024E,F
		No	R7847Ag	0.8/1 or 2/3	Gas	Rectifying Flame Rod Holdersi	C7004, C7007, C7011 Complete Assemblies: C7008, C7009, Q179
		No	R7847Ag	2/3	Gas, oil, coal	Ultraviolet (Purple Peeper®)	C7012A,C.
		Dynamic Ampli- Check®	R7847Bd,g	0.8/1 or 2/3	Gas	Rectifying Flame Rod Holdersi	C7004, C7007, C7011 Complete Assemblies: C7008, C7009, Q179
		Dynamic Ampli- Check®	R7847Bd,g	2/3	Gas, oil, coal	Ultraviolet (Purple Peeper®)	C7012A,C
		Dynamic Self Check	R7847Cc,h	3	Gas, oil, coal	Ultraviolet (Purple Peeper®)	C7012E,F
Infrared	Red	No	R7848A	2/3	Gas, oil, coal	Infrared (Lead Sulfide)	C7015
		Dynamic Ampli- Check®	R7848Bd	2/3	Gas, oil, coal	Infrared (Lead Sulfide)	C7015
	Red/ White	No	R7852A	2/3	Gas, oil, coal	Infrared (Lead Sulfide)	C7915
		Dynamic Ampli- Check®	R7852Bb	2/3	Gas, oil, coal	Infrared (Lead Sulfide)	C7915
Ultraviolet	Purple	No	R7849A	0.8/1 or 2/3	Gas, oil	Ultraviolet (Minipeeper)	C7027, C7035, C7044f
		Dynamic Ampli- Check®	R7849Bd	0.8/1 or 2/3	Gas, oil	Ultraviolet (Minipeeper)	C7027, C7035, C7044f
		Dynamic Self- Check	R7861Ac,e	0.8/1 or 2/3	Gas, oil, coal	Ultraviolet	C7061
	Blue	Dynamic Self- Check	R7886Ac,e	2/3	Gas, oil, coal	Ultraviolet (Adjustable Sensitivity)	C7076
Optical	White	Dymanic Ampli- Check®	R7851B	0.8/1 or 2/3	Gas, oil, coal	Optical (UV, Visible Light)	C7927, C7962
		Dynamic Self- Check	R7851Cc	2/3	Gas, oil, coal	Optical (UV only)	C7961

a Flame Failure Response Time (FFRT) depends on selection of amplifier and 7800 SERIES and R7140 Relay Module.

b R7824C is used only with the 24 Vdc RM7824 Relay Module and C7024E,F Flame Detectors.

c Circuitry tests all electronic components in flame detection system (amplifier and detector) 12 times a minute during burner operation and shuts down burner if detection system fails.

d Circuitry tests flame signal amplifier 12 times a minute during burner operation and shuts down burner if amplifier fails.

e 200/220/240 Vac applications require a 120 Vac, 10 VA minimum stepdown transformer (not provided) to drive the shutter. Applies to R7886A series 2 or greater; R7861 series 1 or greater. Fig. 2 shows flame detector wiring.

f Use C7027, C7035, C7044, C7927, and C7962 Flame Detectors only on burners that cycle on-off at least once every twenty-four hours. Use C7061A Ultraviolet Detector with R7861A Amplifier or C7076A Flame Detector with R7886A Amplifier as ultra-violet flame detection system for appliances with burners that remain on continuously for twenty-four hours or longer.

g R7847A,B Amplifiers with 0.8/1 second FFRT should NOT be used with C7012A,C Solid State Ultraviolet Detectors.

h R7824C Series 2 and greater and R7847C Series 4 or greater, check flame detector system when flame reaches 1.5 Vdc or at

4.5 seconds, whichever occurs first.

NOTE: R7824C Series 2 or greater and R7847C Series 4 or greater, pulse the shutter when signal of 1.5 Vdc is sensed. Display readings of 0.7 to 2.4 Vdc are common.

i Order flame rod separately; see flame detector Instructions for holder.

 

 

 

 

 

BNSENS (Nanjing) Sensor Technology Co., Ltd. is located in Nanjing, China. It is a high-tech enterprise specializing in the development, manufacturing and trade of sensor products. The company has brought together a group of outstanding technical experts in various fields such as automation, electronics, machinery and computers. All employees of the company have college degrees or above. It adopts the world-class management and operation model and 6 sigma quality system. At present, the company's main products are pressure, liquid level, flow, current, switches, etc. The company's users are all over the country, and some products have been exported to Japan, South Korea and Southeast Asia.

Since its inception, the company has been based on the technical accumulation and management standards of American sensor giants. It is composed of senior engineers and managers who have served in multinational companies for many years, and has rapidly developed various pressure sensors, transmitters, liquid level, flow meters, pressure switches, digital meters, current sensors, proximity switches and other products. After years of unremitting efforts, it has become one of the leading suppliers in the domestic automation industry. Our pressure transmitters can achieve an accuracy of more than 3/10, 000. The products have been widely used in oil, natural gas, electricity, chemical industry, metallurgy, building materials, food, light industry, environmental protection, aerospace, tap water, municipal and other industries.

It is a sensor science and technology innovation company that masters the core technology of MEMS chips. The company has a research and development center in Minnesota, USA. The leader is Dr. Pan Hanjin, a famous scientist in the sensor industry. Dr. Pan Hanjin has been deeply involved in the sensor industry for more than 20 years and is an expert in the sensor industry.

The company has a number of ASIC chips independently developed, which are widely used in industrial, automotive, home appliance and other markets.

BNSENS (Nanjing) Sensing Technology Co., Ltd. is a strategic partner of Honeywell in China. The two parties proposed a plan of East serving East and jointly developed several sensors specifically for the Chinese market. These sensors will be widely used in intelligent manufacturing, Internet of Things, artificial intelligence, and smart home fields. These sensors include: Magnetic sensors, temperature sensors, humidity sensors, force sensors, fire water pressure sensors, equipment vibration sensors, human body status monitoring sensors, motion sensors, etc.

History of BNSENS Company:

BNSENS is a company focusing on sensors, instruments, and electronic components. We are a young company, founded in 1999, just 25 years old, and we are still growing.

1999: The company's first pressure sensor was launched, mainly for the petroleum and petrochemical industries.

2002: The company expanded its product line and launched temperature sensors

2005: Started producing high-precision pressure sensors for the test and measurement market

2006: Became an official authorized agent of Honeywell

2009: Introduced the Six Sigma management system, and the product qualification rate was greatly improved

2010: Became a supplier of Emerson

2011: We started selling SICK sensors

2014: Introduced the sensor production line from Germany, developed more industrial control sensors, and cooperated with TSMC

2015: Cooperated with Siemens in Vietnam

2017: The factory moved to Nanjing High-tech Zone

2019: Became a national high-tech enterprise in China

2023: We started selling products from Infineon and Rohm

BNSENS, The Future Starts Here.