sauermann DF 110 Detector of Refrigerant Gases and Hydrogen User Manual

USER MANUAL

DF 110
Detector of refrigerant gases and hydrogen (H2)

Description of the device

1. Batteries led
2. Autozero led
3. Activation/deactivation key for the audible signal
4. Leds of graphic visualisation of thresholds
5. On/Off key
6. Sensitivity/Manual autozero key

General features

Detected gases| HFC: R134a, R404a, R407c, R410a, R32, R422a/b/c/d, R425a, R507a, R125
HCFC: R22
CFC: R12, R502
Others: H2, R290, R600a, HFO-1234yf, HFO-1234ze
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Measuring element| Semi-conductor sensor
Display| 13 LEDs:  8 for the graphic visualization of thresholds, 3 for the sensitivity of detection, 2 for the battery level and manual autozero
Indication| LED: gradual lighting up when the gas concentration increases Audible: the beep frequency increases when the gas concentration increases
Probe| Flexible, 300 mm length
Autonomy| > 12 hours
Housing| Anti-choc ABS, protection IP54
Keypad| 3 keys
European directives| 2014/30/EU EMC; 2014/35/EU Low Voltage; 2011/65/EU RoHS II; 2012/19/EU WEEE
Power supply| 4 AAA LR03 1.5 V batteries
Ambiance| Neutral gas
Conditions of use (°C,%R, m)| From 0 to +50 °C. In non condensing conditions. From 0 to 2000 m.
Storage temperature| From -20 to +80 °C
Auto-extinction| 15 minutes
Weight| 295 g

Technical specifications

for 300 g/year
Normal sensitivity (“Norm” on the device)| From 0 to 30 g/year| All the LEDs (8) for 30 g/year
High sensitivity (“H” on the device)| From 0 to 3 g/year| All the LEDs (8) for 3 g/year

Perform a measurement

• Turn on the detector pressing the “On/Off” key.
  When it turns on, the pre-heating phase of the sensor begins. This phase lasts 60 seconds. During this phase, all the visualisation leds of thresholds light one after the other. A few second before the end of the pre-heating phase, all the leds blinks at the  same time. Before using the device, make sure with the tester that the device works correctly (see next page).

• Place the probe as close as possible to the site of the suspected leak.

• Slowly move the probe (approximately 2 cm/second) in the direction to the possible source of the leak.
  It is important to move the probe past the leak and to go back toward it. The device responds to changes in gas concentration in the air. Moving the probe allows to the device to respond properly to these changes.
  If gas is detected, the frequency of the beep repetition will increase as the detected gas concentration increases and the leds of graphic visualisation lights from the left (low gas concentration) to the right (high gas concentration).

Manual and automatic autozero functioning
The detector performs an automatic autozero every 2 s to set its minimum threshold of detection. This autozero allows to guarantee an optimum gas detection whatever the conditions of use (contaminated environment, temperature variations,…). In case of  detection, according to the amplitude of gas measurement, the automatic autozero will deactivate to guarantee a better location of the leak. It will automatically reactivate after a return to normal conditions. In case of high gas concentration with a wide contaminated area, the automatic autozero can be not enough to detect precisely the location of the leak, there will be a measurement saturation. In this case, it is possible to perform a manual autozero into the contaminated area to reset the detection and to get  back to a progressive sensitivity when getting close to the leak source.
To perform a manual autozero, please see next page.

Setting of the sensitivity
If the gas concentration is high, press “Sens” key to set the sensitivity and like this to get a better identification of the leak source. Please see next page for the details about the three different sensitivities.

Adjust the device
Adjust the sensitivity

• Press the “Sensitivity/Autozero” key to adjust the sensitivity of the device.

for 300 g/year
Normal sensitivity (“Norm” on the device)| From 0 to 30 g/year| All the LEDs (8) for 30 g/year
High sensitivity (“H” on the device)| From 0 to 3 g/year| All the LEDs (8) for 3 g/year

Activate/deactivate the audible signal
By default, when starting the device, the audible signal is always active.
The device is turned on.

• Press key to activate the audible signal.
• Press this same key to deactivate it.

Perform an autozero
The device is turned on.

• Press   at least 3 s the key to perform an autozero.
  The “Autozero” led turns on.

Perform a test

The DF 110 is supplied with a tester which allows to make sure that the detector works correctly.
To test:

• Remove the tester cap by pulling on it.
• Turn on the detector and wait the end of the pre-heating phase (60 seconds).
• Put the detection probe a few centimetres above the tester. The beep frequency increases and the leds of graphic visualisation must react and lights from the left to the right. This indicates that the sensor and the electronic of the detector work correctly.

After each test, remember to put the protective cap back on the tester. Replace the tester when its green colour is no longer visible.

Change the filter

• Unscrew the probe tip.
• Remove the filter located inside.
• Put a new filter.
• Screw the tip on the probe.

Change the batteries

• Remove the front part at the back of the device.
• Change the old batteries by AAA LR03 1.5V batteries.
• Replace the front part.

www.sauermanngroup.com
NT_EN – DF110 – 07/10/22 – Non-contractual document –
We reserve the right to modify the characteristics of our products without prior notice

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