Servomex DF-310E User Manual (English)

Questions and Answers:

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Nicole RandolphAug 1, 2025
Why is the span reading unacceptably high on my Servomex Analytical Instruments?
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  thompsonstaceyAug 2, 2025
  To address a high span reading (greater than 50% high) on your Servomex Analytical Instruments, verify the accuracy and age of your calibration reference cylinder. Note that trace O2 standards in steel cylinders can degrade over time due to oxidation of the cylinder walls. If you're using steel cylinders, standards below 100 ppm should be re-analyzed or calibrated every three months. Ideally, standards below 100 ppm, and especially those below 10 ppm, should be prepared in aluminum cylinders.
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abigailmartinezAug 22, 2025
What to do if Servomex DF-310E Analytical Instruments analyzer reads 0.00 at all times?
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  Dillon HarrisAug 22, 2025
  If your Servomex Analytical Instruments analyzer consistently reads 0.00, inspect the sensor wiring. Ensure the nuts securing the wires to the sensor are tight. Trace the wires from the sensor back to the sensor connector, verifying that the terminal pins are correctly seated in the connector plugs and making good contact. Continue tracing the wires back to the main PCB connector, ensuring the wires are correctly crimped and none have broken loose.
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qthomasAug 27, 2025
What to do if the Electrolyte Condition alarm is ON on Servomex DF-310E Analytical Instruments?
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  cookpatrickAug 27, 2025
  If the Electrolyte Condition alarm is ON for Servomex Analytical Instruments, add Hummingbird Replenishment Solution if the electrolyte level is near or below the “MIN” mark.

Servomex DF-310E Specifications

General

Measured Gas	Oxygen (O2)
Power Supply	100-240 V AC, 50/60 Hz
Enclosure Rating	IP54
Measurement Range	0-100% O2
Accuracy	±1% of range
Operating Temperature	0°C to 45°C (32°F to 113°F)
Output Signal	4-20 mA, RS-232
Weight	2 kg (4.4 lbs)