Manning EC-FX-NH3 Gas Sensor Datasheet

Manning EC-FX-NH3 Gas Sensor Datasheet
EC-FX-NH3 Technical Specifications
Ammonia Sensor/Transmitter
GENERAL SPECIFICATION
USE
A mmonia sensor/transmitter designed for use in industrial refrigeration applications. The EC-FX-NH3
can provide a linear 4/20 mA or Modbus RS-485 signal input into PLC’s or SCADA systems. Can also be
used with Honeywell controllers to create a complete gas detection system that includes visual/audible
notification and relay outputs to activate ventilation.
COMMON OPERATIONENT RANGE
OPERATION
I n units without the optional LCD module, status is indicated by LEDs installed on the PCB. In units with
the optional LCD, two external push buttons, “Accept” and “Scroll” are used to navigate test functions and
operating modes.
LCD DISPLAY (OPTIONAL)
2 line by 8 alpha numeric characters and continuous backlight
OUTPUT
2 Isolated 4/20 mA, 700 ohms max. at 24 VDC. Signal output reduces to 0.5 mA to indicate a fault
condition. RS-485, Modbus RTU protocol.
ACCURACY
±5% full scale*
ENVIORNMENTAL IP RATING
Indoor use, IP 44 in accordance with EN60529:1992
OPERATIONAL
HUMIDITY
5-100% RH (condensing)
TEMPERATURE
-50°F to +120°F (-45°C to +49°C), ATMOS equipped enviro-adaptive technology required for refrigerated
areas or outdoors
SENSOR PRESSURE LIMIT
0-10 PSIG
STORAGE
40°F to +120°F (-40°C to +49°C), 20 to 80%RH (non condensing)
COMMON MODULE
COMMUNICATION
/20 mA output: #18/3 shielded cable (Belden 8770 or equal), cable runs < 1,500 ft. RS-485: for
4
communication cable, use 24 AWG twisted pair, shielded (Belden #9841 or equal), cable runs up to 2,000
ft. For power cable use 14 AWG (Belden #5100UE or equal), cable runs up to 1,000 feet.
POWER SOURCE
24 VDC, 0.5 amp max.
ENCLOSURE
NEMA 1, gasketed, #16 gauge steel (standard). Stainless steel, including modified enclosures for low
temperatures, ventilation ducts, etc. are available. Weight: 3 lbs.
SENSOR SPECIFICATIONS
SENSOR PRESSURE LIMIT
Atmospheric ±10%
REPEATABILTIY
<10% of full scale
RESPONSE TIME (T90)
<30 s Low Range; <75s High Range
RANGES
Low Range 0-100 ppm (standard), 0-200 ppm, 0-250 ppm, High Range 0-500 ppm, 0-1000 ppm
SENSOR WARRANTY
Three years from date of shipment
SENSOR VIABILITY TEST
SensorCheck: an internal microprocessor determines the sensor’s electrical viability every 24 hours. If the
viability test fails, a 0.5 mA signal will indicate a fault. An internal LED will indicate if the sensor is at the end
of its operational life or disconnected.
CAUTION: EC-FX is designed for operation in a wide range of environments and harsh conditions. However, it is important that exposure to high concentrations of solvent vapors is avoided,
both during storage, fitting into instruments, and operation. EC-FX is designed to be used in safety critical applications. To ensure that the sensor and/or instrument in which it is used, are
operating properly, it is a requirement that the function of the device is confirmed by exposure to target gas (bump check). Failure to carry out such tests on a regular basis may jeopardize
the safety of people and property.
PLEASE NOTE: While every effort has been made to ensure accuracy in this publication, no responsibility can be accepted for errors or omissions. Data may change, as well as legislation, and you
are strongly advised to obtain copies of the most recently issued regulations, standards, and guidelines. This publication is not intended to form the basis of a contract.
For more information:
www.honeywellanalytics.com
Honeywell Analytics:
Toll free: 800.444.9935
www.honeywell.com
SS01162B | PS_01 | 01/16
© 2016 Honeywell International Inc.
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