Teledyne 7500ZA operating instructions O2 Sensor Input External input connector A/I, Input signal

Models: 7500ZA

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NDIR Gas Analyzer

Instalation

 

 

(2) Analog output signal: Analog output connector (A/O)

Output signal : 4 to 20 mA DC or 0 to 1 V DC (selected when ordering) Minus lines for the insulation and signal are common from the ground and internal circuit.

Allowable load : 4 to 20 mA DC, 550Ω or less 0 to 1 V DC, 100kΩ or more

The analog output signals of the instrument are not isolated individually. It is recommended to isolate the signals individually to eliminate the interference from unwanted signals or other external interference, especially if the cable exceeds 30 meters or leads to outdoors.

(3)O2 Sensor Input: External input connector (A/I)

Input signal:

External zirconia O2 sensor: Zirconia O2 sensor signal (Fuji ZFK7

output)

External O2 sensor:

0 to 1 VDC (DC input resistor of 1MW or

 

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Teledyne Analytical Instruments

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Page 33
Image 33
Teledyne 7500ZA operating instructions O2 Sensor Input External input connector A/I, Input signal