Inficon D-TEK Stratus 724-202-G Series User manual

Operating Manual
D-TEK Stratus®
Refrigerant Leak Detector and Portable Monitor
074-708-P1A

INFICON
Two Technology Place
East Syracuse, NY 13057-9714

INFICON Table of Contents
074-708-P1A D-TEK Stratus OM iii
Table of Contents
1 Declaration of Conformity .................................................................................................................................4
2 Cautions and Warnings ....................................................................................................................................5
3 Specifications ...................................................................................................................................................6
4 D-TEK Stratus ..................................................................................................................................................9
5 Included in the Package .................................................................................................................................11
6 What is Cloud Hunting?..................................................................................................................................12
7 Charging the Battery.......................................................................................................................................13
8 Turning On the Instrument and Preparing for Use .........................................................................................14
9 Screen Layout and Symbols...........................................................................................................................15
10 Using Cloud Hunting (Portable Monitor) Mode...............................................................................................17
11 Using Pinpoint Mode ......................................................................................................................................19
12 Manual Zero Mode .........................................................................................................................................20
13 Earbuds and Volume Control .........................................................................................................................21
14 Removing and Installing the Lithium Ion Battery ............................................................................................22
15 Removing and Installing the Sensor...............................................................................................................23
16 Replacing Filters.............................................................................................................................................24
17 Extra-long Probe.............................................................................................................................................25
18 Needle Probe Extension.................................................................................................................................26
19 Carbon Dioxide Sensor ..................................................................................................................................27
20 Cleaning and Storage.....................................................................................................................................28
21 Replacement Parts and Accessories..............................................................................................................29
22 Troubleshooting Guide ...................................................................................................................................30
23 Warranty and Liability-Limitation ....................................................................................................................32
24 Returning the Instrument for Warranty or Repair ...........................................................................................33

1 | Declaration of Conformity INFICON
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1 Declaration of Conformity

INFICON Cautions and Warnings | 2
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2 Cautions and Warnings
Cautions:
• Only use a certified charger/cord with an output of 5 V (dc) ±5%, 1 A ±5%.
• Keep the device out of extremely high or low temperature locations.
• Do not expose the battery to liquid.
• Do not use the device if you notice any damage to the battery.
• Do not disassemble or modify the battery.
• Handle and dispose of the battery per local regulations.
• If the recharging operation fails to complete, even when the specified recharging
time has elapsed, immediately stop further recharging.
• Do not leave the battery unattended while charging.
• Unplug the charger when the battery is fully charged.
• Improper use or disposal of lithium ion batteries can cause a fire.
• This instrument is not intended for use in flammable environments.
WARNING
This symbol is used to alert the user to the presence of important operating
and maintenance (servicing) instructions in the literature accompanying this
instrument.
WARNING
Exposure to high concentrations of CO2 or refrigerants is dangerous and can
be life-threatening.
The instrument is not for use in toxic or hazardous environments. It is not a personal
protection or life-saving device. Always exercise extreme caution in potentially toxic or
hazardous environments.

3 | Specifications INFICON
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3 Specifications
Usage indoor/outdoor
Sensor type infrared
Compatible refrigerants all CFCs, HCFCs, HFCs, HFOs, blends
(including A2Ls), and CO21
Minimum sensitivity (Pinpoint mode,
Super sensitivity)
0.03 oz/yr (1 g/yr)2
Display resolution (Cloud Hunting mode) 1 ppm
Display range (Cloud Hunting mode) 0 to 9999 ppm
Accuracy (Cloud Hunting mode, with
clean air reference)
±1 ppm ±10% of reading
Battery type lithium ion
Charging input type micro USB
Charging time (starting at 0%) approximately 3 hours
Battery life approximately 8 hours (Cloud Hunting)
approximately 10 hours (Pinpoint)
Input voltage 5 V (dc) ±5%
Input current 1 A ±5%
Warm-up period 45–90 seconds
Temperature ranges and humidity
• Storage -20–60°C (-4–140°F)
• Operating3-20–50°C (-4–122°F)
• Charging 0–45°C (32–113°F)
• Humidity 95% RH NC maximum
Altitude 2000 m (6500 ft.)
Pollution degree 2
Overvoltage category 2
Weight (with battery; not including
carrying case or accessories)
1.10 lb. (0.50 kg)
1 The detection of CO2 requires an optional CO2 sensor.
2 To achieve optimal performance and the specified sensitivities, it is recommended to
allow D-TEK Stratus to run for 15 minutes prior to use.
3 Use in temperatures below 0°C (32°F) should be limited. Extended warm-up time is
recommended before use in low temperature environments.

INFICON Specifications | 3
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Specification table in accordance with EN 14624
R134a R1234yf
Minimum sensitivity, fixed (static) 1 g/yr. 0.5 g/yr.
Maximum sensitivity, fixed (static)4>50 g/yr. >50 g/yr.
Minimum sensitivity, moving (dynamic) 1 g/yr. 1 g/yr.
Maximum sensitivity, moving (dynamic)4>50 g/yr. >50 g/yr.
Minimum response/detection time < 1 s < 1 s
Zeroing time 1–4 s 1–4 s
Recovery time for 50 g/yr exposure57.6 s 6.4 s
Minimum sensitivity in contaminated
environment
>2 g/yr. 1 g/yr.
Calibration frequency Check annually with calibrated leak
standard
4 The upper leak detection limit is not specified by INFICON as there is no upper limit
to the size of the leak the detector is able to detect.
5As no 50 g/yr. leak standard was available during testing, a 32 g/yr leak standard was
substituted.
SAE Applications SAE standards J2791 (R-134a) and J2913 (R-1234yf) specify sensitivity to the
following leak sizes for the corresponding settings below. Super sensitivity is more
sensitive than what is required by SAE for leak checking in a clean environment (free
of background refrigerant). If leak checking in a contaminated environment (high
background refrigerant), switch to Super sensitivity
R-134a leak rate (g/yr) R-1234yf leak rate (g/yr) Sensitivity Setting
14 14 low
7 7 medium
4 4 high
The following table lists some common under-hood chemicals and indicates whether
or not they will cause a false-trigger from D-TEK Stratus.
Perform the leak test
with the engine turned
off.
Chemical False-Trigger
windshield washer solvent (methanol base) yes
Ford™ spot and stain remover yes
Ford rust penetrant and inhibitor yes
Ford gasket and trim adhesive yes
Permatex™ natural blue cleaner and degreaser yes
Ford brake parts cleaner yes
Ford spray carburetor tune-up cleaner yes

3 | Specifications INFICON
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Chemical False-Trigger
Ford clear silicon rubber yes
Motorcraft™ G-05 antifreeze/coolant no
Gunk™ liquid wrench no
Ford pumice/lotion hand cleaner no
Ford Motorcraft DOT3 brake fluid no
Ford silcon lubricant no
Dexron™ automatic transmission fluid no
mineral engine oil no
Patents (Pending) • Application #10 2018 206 877.1
• Application #18171080.7
• Application # 10 2018 208 826.8

INFICON D-TEK Stratus | 4
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4 D-TEK Stratus
MODE
button
SENS/ZERO
button
eject button
exhaust port (do not block)
battery door

4 | D-TEK Stratus INFICON
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power button micro USB
power input
volume button headphone jack

INFICON Included in the Package | 5
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5 Included in the Package
• D-TEK Stratus
• plastic carrying case
• lithium ion rechargable battery (installed)
• D-TEK infrared sensor (installed)
• extra-long probe
• wall charger (including plugs for multiple regions)
• car charger
• replacement filters
• earbuds
• micro USB charging cable

6 | What is Cloud Hunting? INFICON
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6 What is Cloud Hunting?
When refrigerant leaks from a system, it does not disperse evenly in the air. The
concentration of refrigerant is usually higher near the source of the leak. The density
of refrigerants is also different than that of air, so it tends to form “clouds” in the air,
typically closer to the floor. These clouds are colorless and odorless for most
refrigerants. When leak checking with a traditional leak detector, it will likely alarm
when walking into a refrigerant cloud. This does not help you find the leak, because
the cloud may not be near the leak source.
D-TEK Stratus uses patent-pending technology to display the refrigerant concentration
in the air in parts per million (ppm). This allows you to read the display and follow the
number to find areas of higher concentration, leading you straight to the leak source.

INFICON Charging the Battery | 7
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7 Charging the Battery
D-TEK Stratus uses a rechargeable lithium ion battery that comes partially charged.
INFICON recommends charging the battery before use. Using the supplied charger or
charging cradle accessory, a dead battery can be charged to 80% in approximately 2
hours and 100% in approximately 3 hours. A full charge typically lasts about 8 to 10
hours of operation, depending on the mode used and the operating temperature. An
on-screen indicator displays the remaining battery percentage.
D-TEK Stratus can be used while charging.

8 | Turning On the Instrument and Preparing for Use INFICON
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8 Turning On the Instrument and
Preparing for Use
If the screen does not turn on, the battery is low and needs to be charged. D-TEK
Stratus can be used while charging.
1
Long press the power button (located on the left side of the body of the
instrument) to turn D-TEK Stratus On or Off.
ðD-TEK Stratus begins a variable-time warm-up for 45 to 90 seconds. When
warm-up is complete, D-TEK Stratus is ready to use.
2
To switch modes, press the MODE button. This toggles between Cloud Hunting,
Pinpoint and Manual Zero modes.
D-TEK Stratus always starts in the last mode that was used.
WARNING
Do not block the exhaust port.
Blocking exhaust air can cause false alarms or readings.

INFICON Screen Layout and Symbols | 9
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9 Screen Layout and Symbols
D-TEK Stratus uses the display screen for all indicators and information. The display
consists of a top bar, main display, and a bottom bar.
top bar
main display
bottom bar
Top bar: The top bar includes the battery symbol, the percentage, the sensor indicator
(when a non-standard sensor type is used), and the sound indicator.
Symbol Description
battery charge is 75–100%
battery charge is 50–74%
battery charge is 30–49%
battery charge is 10–29%
battery charge is <10%
battery is charging
volume is set to 100% (default)
volume is set to 50%
volume is muted
CO2 sensor is installed
Main display: The main display shows the information needed for leak checking. The
main display includes the ppm reading for Cloud Hunting mode and leak indicators for
Pinpoint and Manual Zero modes.
Bottom bar: The bottom bar displays the current mode and the mode indicator symbol.
It also includes the sensitivity for Pinpoint mode.

9 | Screen Layout and Symbols INFICON
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Symbol Description
indicates Cloud Hunting mode
indicates Pinpoint mode
indicates Manual Zero mode
sensitivity = Super (only displayed in Pinpoint mode)
sensitivity = High (only displayed in Pinpoint mode)
sensitivity = Medium (only displayed in Pinpoint mode)
sensitivity = Low (only displayed in Pinpoint mode)

INFICON Using Cloud Hunting (Portable Monitor) Mode | 10
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10 Using Cloud Hunting (Portable Monitor)
Mode
ppm reading
max reading
side bar
Cloud Hunting
symbol
Cloud Hunting mode is identified by a large ppm reading on the display and the words
Cloud Hunting on the bottom, along with a cloud symbol. The side bar increases and
decreases with changes in the ppm reading.
There is no sensitivity setting in Cloud Hunting mode.
1
Slowly move through the suspect areas and observe the ppm reading.
2
Follow the ppm reading to find areas of higher refrigerant concentration. The
higher the number, the higher the concentration.
3
Press the SENS/ZERO button to enable and disable the MAX feature. When
enabled, the highest ppm level observed is shown below the main ppm display.
To reset the MAX reading, long-press the SENS/ZERO button or toggle the
feature off and back on again.
D-TEK Stratus uses a patent-pending switching valve in Cloud Hunting mode to
constantly compare the sample from the tip of the probe with the air inside the body of
the leak detector (the reference sample). This technology is what allows D-TEK
Stratus to work without the use of a carbon filter. Lingering for several minutes in an
area with a high concentration of refrigerant may cause the reference sample to

10 | Using Cloud Hunting (Portable Monitor) Mode INFICON
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become contaminated with refrigerant, which causes the ppm reading to settle back
toward zero. If this occurs, move back to an area with clean air (while in Cloud Hunting
mode) for a few minutes to allow the reference sample to become clean again.

INFICON Using Pinpoint Mode | 11
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11 Using Pinpoint Mode
leak indictor
(showing full
alarm)
sensitivity Pinpoint symbol
Pinpoint mode is identified by a large leak indicator on the display and a Pinpoint
symbol on the bottom bar. The current sensitivity is also indicated on the bottom bar.
This mode works like a standard leak detector with auto-zeroing, where the indicator
bars illuminate to indicate when a leak is detected.
1
Place the tip of D-TEK Stratus as close as possible to the suspected leak (do
not block the air flow).
2
Slowly move the probe past each possible leak point.
ðIf a leak is detected, D-TEK Stratus alarms and the on-screen indicator
illuminates.
3
When a leak is identified, pull the probe away from the leak for a few seconds
and then recheck the spot to verify the leak.
In Pinpoint mode, D-TEK Stratus automatically zeros to the background refrigerant
and only alarms again with a higher concentration of refrigerant. When this occurs,
either continue looking for a higher concentration of refrigerant or move the probe to
an area of lower concentration for a few seconds to reset the zero point.
Press the SENS/ZERO button to switch the sensitivity setting. When working with a
large leak, it can be easier to pinpoint the leak location using a lower sensitivity
setting. The current sensitivity is displayed on the bottom bar.

12 | Manual Zero Mode INFICON
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12 Manual Zero Mode
leak indicator
(showing full
alarm)
Manual Zero
symbol
Manual Zero mode looks and operates similar to Pinpoint mode, but is identified by
the text Manual Zero and the Manual Zero symbol on the bottom bar. Manual Zero
mode allows the user to manually zero to the background refrigerant by pressing the
SENS/ZERO button. Once the new zero point is set, D-TEK Stratus will not alarm
unless a higher concentration of refrigerant is detected.
Manual Zero mode beeps faster at the zero point than other modes. If the
concentration is lower than the current zero point, the beeping slows. This allows the
user to know if they are moving away from the leak by listening to a change in the
beep rate.
There is no sensitivity setting in Manual Zero mode.
Manual Zero mode requires an extra warm-up time of up to 15 minutes for optimal
performance.