Page 1
Infrared
T2
T2
PEAK
MUTE
ON/OFF
ON/OFF
L/M/H
SENSITIVITY
H
M
L
PEAK
LOW-BATT
PRESS FOR
1 SECOND
SRL2
Infrared
Refrigerant
Leak Detector
BATTERY
CHECK
SENSITIVITY
H
M
L
PEAK
LOW-BATT
!
!
Refrigerant
Leak Detector
Model: SRL2
OPERATOR’S MANUAL
Operation
ON/OFF Protection
To turn on/off the SRL2 press and hold the
ON/OFF button for one second. This slight delay
protects against inadvertent pressing. If you forget
to turn it off, it will automatically go off in 10 minutes.
LED Bar Graph Display
The eight segment LED display indicates the
degree of change
the concentration of refrigerant in the air increases,
so does the number of lit bars on the display.
L/M/H Button (Sensitivity)
Set the sensitivity level by pressing the L/M/H button. Low(L), medium(M), or high(H) sensitivity will
be indicated by their respective LED.
The higher the concentration of refrigerant in the
ambient air, the lower the sensitivity setting should
be to minimize false trips.
Mute Button and Battery Check
Pressing the MUTE button toggles the sound of
the SRL2 on and off. In addition, holding the MUTE
button down for one second will display the remaining percent of battery charge on the LED bar graph.
in refrigerant concentration. As
Description
The SRL2 uses infrared optics to create a
portable refrigerant leak detector technology that
has a superior combination of sensitivity, speed,
sensor life, battery life, portability, and ease of use.
Gas is pumped through the tip of the wand into
the sensor within the SRL2 body. The sensor
detects changes in concentration, not absolute concentration, making it easy to detect leaks even in
areas with refrigerant in the air.
The SRL2 detects leaks as small as 0.1 oz/year,
which exceeds the toughest SAE J1627 standards.
The SRL2 comes with wall and car charger for its
ultra-compact Lithium-ion battery which powers the
SRL2 for 8hrs of continuous operation before a
recharge is needed. That’s long enough to last your
entire workday.
Unlike many leak detectors, oil vapor does not
trigger the SRL2.
The SRL2 has variable sensitivity settings, keeping ‘nuisance tripping’ to a
minimum. A quick and
automatic 30 second self-calibration upon power-up
ensures optimal performance. A built in replaceable
filter blocks moisture and harmful particulates. The
SRL2 also has a mute button and a peak hold function.
Peak Button
The PEAK function holds the highest change in
concentration achieved while continuing to detect
leaks. Press PEAK to toggle this function on and off.
Turning the PEAK function off will clear the peak
change. The PEAK LED will light when PEAK function is on.
Turbo Mode
The TURBO function is an additional 4th sensitivity that pushes the SRL2 to it highest possible sensitivity. This feature is activated by pressing the
PEAK button four times in succession, and can only
be activated while on the high(H) sensitivity level.
When in the TURBO mode the first green LED on
SRL2 will strobe, and the audio detection sound will
be a solid tone.
To exit the TURBO mode, press the PEAK button
again four times in succession, or switch from
high(H) to one of the other sensitivities levels.
Beware: While in TURBO mode the SRL2 is
extremely sensitive and will more easily trigger on
abrupt or violent motions as well as very small
changes in refrigerant levels. Handle with care
when in TURBO mode.
Leak Detection Procedure
Keep the SRL2 away from any areas of potential
refrigerant leakage until the warm-up and calibration
period is over. The warm-up and calibration
Quick Tips
1.
Keep the wand tip moving past suspected leak
locations.
2. Once a leak is detected, sweep the wand back
over to pinpoint.
3. To pinpoint larger leaks adjust sensitivity.
Filter Assessment & Replacement
The filter blocks moisture and other contaminants
from the sensor. When it gets wet, it constricts flow
of air and it will have to be replaced. Unscrew the
sensor tip and replace the white filter so that the
rounded end is closest to the tip of the wand. Use
only the Fieldpiece supplied filter.
You can order from a distributor extra bags of
replacement parts (model RFL2) are available from
Fieldpiece. Model RFL2 contains 10 filters and 5 Orings.
WARNING
DO NOT use the SRL2 without the proper fil-
ter correctly installed.
sequence lasts about 30 seconds after ON/OFF is
pressed. Allow the SRL2 to fully warm-up before
using to avoid false triggering. On startup, meter
defaults to high sensitivity.
The most likely points for refrigerant leaks are at
the soldered joints in refrigerant lines and changes
in cross section or direction of these lines.
The SRL2 detects changes
refrigerant, not the absolute concentration of refrigerant. This lets the user easily detect leaks in places
that may have refrigerant in the air, such as a refrigerator leaking into an enclosed space. Because the
SRL2 detects change, there is a specific “doublepass” method used to find leaks.
1. The tip of the wand should be fairly close to the
line. You may need to be within 1/4” (0.63cm) of
a small leak to detect it. In this case, using a
second hand to guide the tip along refrigerant
lines may be helpful.
2. Keep the tip moving along refrigerant lines at a
rate of 1-3 inches per second.
3. Once the SRL2 indicates a change in concentra-
tion, note the spot on the line and keep the tip
moving past the potential leak to refresh the air
space within the SRL2 with clean air. (Note: If
the SRL2 wand moves through a very high con-
centration of refrigerant, you may need to use in
in concentration of
Comparing Leak Detectors
Fieldpiece has two leak detectors.
The SRL2 uses an infrared (IR) sensor. It detects
a CHANGE in concentration, so the wand
must keep moving. The main advantages of the
Fieldpiece IR sensor are that its sensitivity will
remain the same over the life of the instrument,
the sensor will last the lifetime of the instru
ment, it will not trigger on humidity or on oil,
and it has nearly the same sensitivity to most
refrigerants.The main disadvantage of infrared
sensors is their sensitivity to mechanical
disturbances.
The SRL8 uses a heated diode sensor.
The heated diode'sadvantage is that it detects
absolute concentration levels so it can be held on
a leak and will continue to beep. It is also initially
very sensitive. Its disadvantages are that the
sensor becomes less sensitive over life, eventually
needing replacement and it is more sensitive to
some refrigerants than others.
99 Washington Street
Melrose, MA 02176
Phone 781-665-1400
Toll Free 1-800-517-8431
Visit us at www.TestEquipmentDepot.com
fresh air for 4 seconds before moving to step 4
in order to clear the refrigerant within the SRL2.)
4. Return the tip back to, and past, the spot first
indicated. When the SRL2 indicates a second
change, note the spot on the line. The source of
the leak will be near the midpoint between the
two noted spots of indication.
5. Very high concentrations of refrigerant can
cause an overload which can take a few seconds to clear.
1/4”
(0.63cm)
SRL2 testing an A-coil in an evaporator, 1/4” from the line.
Page 2
CAT.III
300V
400A
CLAMP
ACH4
AC Current
Clamp
1AAC / 1mVAC
400AAC MAX
!
AirVelocity
&Temperature
Head
English
READLOBATT
ON
LCDX
100
Average
(16sec)
Metric
Real
time
AAV3
AUTO-
OFF
English
Metri
c
Ft/min M/s
KM/hrMPH
ºF ºC
OF
F
AOX2
Combustion
Check
%
O
%
CO
TEMP
ON
GAS
OIL
Lo Batt
°C °F
AUTO
OFF
STABLE
Fuel Type
2
2
T/C
CAL
AUTO-
OFF
T/C
Cal
STABLE
Pressu re
Temp
SH or SC
ON
LOBATT
Refriger ation
Superhea t
and Subcooling
ENGLIS H
METRIC
R134A
R404A
Set
ATM
ASX24
SH
SC
Lithium Battery Care
T2
T2
P1
P1
P2
ZERO
HOLD UNIT
ON/OFF
P2
88.88
88.88
APO
88.8888.88
inWC
mmWC
mbar
psi
HOLD
PRESS FOR 1 SECOND
AUTO-OFF BATTERY
CHECK
80
80
SC57
AUTO OFFTRUE RMS
CAT III
600V
TEMP
K-TYPE
30V
MAX
SC57
OO
FF
FF
WIRELESS ENABLED
SEL
SYNC
The SRL2 contains a very powerful lithium ion
battery. For a long battery life and safe operation,
you must observe the following:
Cautions
1. Do not expose the battery to temperatures high-
er than 140ºF (60°C).
2. Do not charge the battery in or nearby heated
places, such as fire, hot vehicles, or direct sun-
light.
3. Do not solder directly on battery.
4. Do not expose the battery to direct impact or
throw it.
5. Do not get the battery wet.
6. Do not deform or pierce the battery in any way.
7. If there is any battery leakage, do not touch the
battery. In the case that electrolyte gets into the
eyes, flush with fresh water, do not rub, and see
a physician immediately.
8. Replace immediately if there is any deformity,
bad smell, color change, or other abnormality.
9. The battery is user-replaceable and can be pur-
chased at most electronic stores. The following
batteries are known to be compatible with the
SRL2: Fuji Film:NP-120, PENTAX: DLI-7,
RICON: DB-43
Charging
Two chargers are included with the SRL2. The
AC charger plugs into a wall outlet and the car
charger plugs into a car cigarette lighter DC plug.
1. The battery is partially charged when packaged.
Fully charge the battery before first use.
2. The LOW-BATT LED will light red when the bat-
tery is low.
3. To recharge the SRL2, plug one end of the
charger into the top of the SRL2 and the other
into the power source. LOW-BATT will blink
while charging until the battery is fully charged.
When the SRL2 battery is fully charged, LOW-
BATT turns off.
4. Charge within operating environment specified
in the Specifications section in this manual.
5. Avoid frequent full discharges. Several partial
discharges with frequent recharges are better
for lithium-ion batteries. Unlike nickel-based bat-
teries they have no charge memory, and do not
need to be discharged before charging.
Storage
The battery should have a 40%-50% charge during prolonged storage of a month or longer. See
Specifications section in this manual for proper storage environment.
Battery life is dramatically reduced if the battery
is stored fully charged and/or at high temperatures.
Included Equipment
Use model RRE2 when detecting in tight spaces,
such as through a condenser grille. Model RFE2
extends the wand to 25.5” (65cm). The blow molded case, model holds accessories and chargers.
All accessories shown are included with the
SR2K7.
9”(23cm) Flex
Extension
model RFE2
9”(23cm) Needle Tip
Probe model RRE2
Blow molded Carrying Case
w/ RRE2 and RFE2
Model ABMK3
Standalones from Fieldpiece
The SRL2 refrigerant leak detector is designed
for HVAC/R technicians. Here are some other
standalone products from Fieldpiece Instruments.
SDMN5
Dual Port
Manometer
SDP2
Dual In-duct
Psychrometer
SC57
All-in-one
Wireless
Clamp-on Meter
Specifications
Sensing element: Enhanced infrared photo optics
Sensor life: 10 years
Refrigerants: HFC, CFC, HCFC, and blends
Sensitivity: Min (Stationary): 0.1oz/yr (3g/yr)
Max (Stationary): >1.05oz/yr (>30g/yr)
Min (In motion): 0.18oz/yr (5g/yr)
Max (In motion): >1.05oz/yr (>30 g/yr)
After exposure to (50g/yr): 0.1 oz/yr (3g/yr)
In poluted environment: 0.1 oz/yr (3g/yr)
Response time: 1 second
Recovery time: ~4 seconds
Auto off: 10 minutes after no activity
Battery: 3.7VDC(nominal), rechargeable lithium
ion user-replaceable battery.
Battery life: 8 hours continuous use prior to need-
ing a charge. Degradation (30%) after 500
charge/discharge cycles or two years, whichever
comes first.
Low battery LED: Lights when approximately 1
hour of battery life remains.
Charge time: Less than 4 hours (either charger)
Operating environment: 32ºF (0°C) to 104ºF
Storage environment: <80%RH meter and batt.
(40°C) at <75%RH (non-condensing)
For 80% battery recovery:
-4ºF (-20°C) to 140ºF (60°C) less than 1 month
-4ºF (-20°C) to 113ºF (45°C) less than 3 months
-4ºF (-20°C) to 68ºF (20°C) less than 1 year
Notice of Compliance
More Products From Fieldpiece
This instrument complies with the specifications
for an indicating, locating leak detector as described
by the european standard EN 14624, EN 14624
(2005) with the assumption that the speed specification in section 7.2 should read as "2.0 cm/s" as
was indicated to us by A. Beatrix Alke, project manager of Deutsches Institut fur Normung.
Modular Expandability
Modular expandability is ability for accessory
heads and meters to change configurations to
match the various needs of an HVAC/R technician.
Accessory heads (the sensors) send out a mV
signal, which represents the value of the measurement, to whatever meter is attached to it. Heads can
attach directly to the top of a Stick meter, DL3 data
logger, or EHDL1. They can also plug into any meter
with mV ranges using ASLS2 leads.
Test Equipment Depot - 800.517.8431 - 99 Washington Street Melrose, MA 02176
TestEquipmentDepot.com
Warranty and Service
The product is warranted to the original purchaser against defects in material or workmanship for a
period of one (1) year from the date of purchase.
During the warranty period, Fieldpiece Instruments
will, at its option, replace or repair the defective unit.
This warranty does not apply to defects resulting
from abuse, neglect, accident, unauthorized repair,
alteration, or unreasonable use of the instrument.
Any implied warranty arising out of the sale of
Fieldpiece's products including but not limited to
implied warranties of merchantability and fitness for
purpose are limited to the above. Fieldpiece shall
not be liable for incidental or consequential damages.
Return any defective SRL2 to Fieldpiece for warranty service along with proof of purchase. Contact
Fieldpiece for out of warranty repair charges.
v35, ©Fieldpiece Instruments, Inc. 2013
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