Fluke IRR2-BT User manual

IRR2-BT
Solar Irradiance Meter Pro
Users Manual
Introduction
The Fluke IRR2-BT Solar Irradiance Meter Pro (the Meter or
Product) provides digital measurements related to photovoltaic
(PV) panels.
The Meter measures and reads:
Solar irradiation (W/m2) on the surface of a photovoltaic (PV)
panel
Temperature (°F or °C) on the surface of a photovoltaic (PV)
panel
Inclination (degrees) of a photovoltaic (PV) panel
Cardinal degrees with the compass function
The Meter can wirelessly transfer measurements to the
SMFT-1000 PV Analyzer (the Analyzer). This data is used for
IV curve performance analysis of the solar panel and other
measurements of the roof slope and the compass.
Note
The Meter does not connect to smart phones and other
smart devices.
When the date and time on the Meter and the Analyzer match and
the Meter is out of wireless connection range with the Analyzer,
the Meter automatically records the data to memory. This data
can be transferred later to the SMFT-1000.
Contact Fluke
Fluke Corporation operates worldwide. For local contact
information, go to our website: www.fluke.com.
To register your product, or to view, print, or download the latest
manual or manual supplement, go to our website.
[phone] [e-mail]
Fluke Corporation
P.O. Box 9090
Everett WA 98206-9090
U.S.A.
Fluke Europe B.V.
P.O. Box 1186
5602 BD Eindhoven
The Netherlands
PN 5339484 (English) 8/2022
©2022 Fluke Corporation. All rights reserved.
Specifications are subject to change without notice. All Product
names are trademarks of their respective companies.
English

2
Kit Components
The Product contains these items:
1 IRR2-BT Solar Irradiance Meter Pro
1 External Temperature Probe with Suction Cup
1 Carrying Case with Shoulder Strap
1 Mounting Bracket
4 AA IEC LR6 Batteries
1 User Manual
Safety Information
A Warning identifies hazardous conditions and procedures that
are dangerous to the user. A Caution identifies conditions and
procedures that can cause damage to the Product or the
equipment under test.
WWarning
To prevent possible fire or personal injury:
Read all safety information before you use the
Product.
Carefully read all instructions.
Do not alter the Product and use only as specified, or
the protection supplied by the Product can be
compromised.
Do not use the Product if it operates incorrectly.
Do not use the Product if it is altered or damaged.
Have an approved technician repair the Product.
Symbols
The table below lists the symbols that can be used on the Product
or in this document.
Symbol Description
»Consult user documentation.
WWARNING. RISK OF DANGER.
MBattery or battery compartment.
PConforms to European Union directives.
~
This product complies with the WEEE Directive and
its marking requirements. The affixed label indicates
that you must not discard this electrical/electronic
product in domestic household waste. Do not
dispose of this product as unsorted municipal
waste. For information about take-back and
recycling programs available in your country, see
the Fluke website.

3
Product Overview
ON/OFF Button O

Angle Reset Button
Use Angle Reset to measure the angle difference between
the solar panel and the surface
Function key for Irradiance, Temperature, Compass, and
Angle measurements
Integrated Temperature Sensor for panel surface
measurement
External Temperature Probe Socket
Photovoltaic Irradiance Sensor

Hold Button to hold measurement on the display
Push Hold for 2 seconds to enable the Temperature Units
Change mode
Temperature Units Switch Button (°F or °C)
Recording/Data Log
Wireless Connection Indicator (Range: up to 50 m/150 ft)
Synchronized / Not Synchronized
Memory Full Indicator
Hold Indicator
Battery Level Indicator
Compass Function Indicator
Irradiance Units Indicator
Angle Function Indicator
Temperature Units Indicator (°F or °C)
Angle Reset Indicator
External Temperature Probe Indicator
Integrated Temperature Sensor Indicator
1
2
37
8
6
13 14
15
16
17
18
19
2021
5
4
9
10
11 12

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Operation
Use the Analyzer to adjust the recording settings, memory, and
clock synchronization. See SMFT-1000 Users Manual for more
information.
1. Power ON/OFF
At power on, the Meter shows the available memory in hours
for 2 seconds. The total memory capacity allows continuous
recording for 17 hours. Partial memory records for less time.
The display shows the Irradiance/Temperature mode
2 seconds after power up.
2. Move the Meter within wireless range of the main Analyzer.
The range is up to 50 m (150 ft) with a clear line-of-sight view
(no sight obstruction).
shows on the display when the Meter has wireless
connection to the Analyzer.
Note
If already installed on the roof, it is not necessary to
move the Meter. Instead, move the Analyzer near the
building to establish the connection. When connection is
established, you can synchronize both units from the
ground.
3. When connected, the Analyzer sends the command to the
Meter for synchronization, shows on the display.

5
The Meter automatically starts recording the irradiance and
temperature data and REC shows on the display until the
memory is full.
When the Meter is not synced, blinks on the display and
REC turns off.
should not blink at any point. For more information about
wireless connection, see the SMFT-1000 Users Manual.
When the memory on the Meter is full:
REC is off
turns ON
blinks on the display to indicate that the data cannot
download to the Analyzer
To show measurements on the display:
Change Function Screens
1x

6
Change Temperature Units
Connect the External Temperature Probe
Reset Inclination
HOLD Function
>2 s
>2 s

7
Irradiance and Internal Sensor Temperature
Measurements
To measure irradiance and temperature, install the Meter and the
bracket on the solar panel.
Note
For a spot check measurement, position the Meter
directly on the PV panel. The internal, embedded
conductive sensor in the back of the Meter automatically
takes the temperature reading.
The external temperature probe also takes temperature
measurements.

8
External Temperature Probe Connection
Connect the temperature probe to the top of the Meter. The
screen automatically shows when connected. The icon
indicates that the temperature is now read by the external probe.
Place the Meter on or beside the PV panel and connect the
temperature probe with the suction cup to the underside of the
PV panel. Secure the temperature probe to the panel with
electrical tape.

9
Inclination and Cardinal Direction
Place the Meter directly onto the PV panel to get accurate tilt. For
surfaces of rooftops with inclinations different than 0°, push
for 2 seconds to reset the angle and measure the true inclination
of a solar panel. Secure a probe to the solar panel with optional
electrical or similar tape to assure reliable mounting.
The compass measurement requires a two-step process for
accurate cardinal direction.
1. Do irradiance, temperature, and inclination measurements with
Meter placed on and aligned with the PV panel. The compass
function shows --- on the LCD when the tilt angle is above
20 degrees. At a tilt angle of >20 degrees any compass
reading shown will be inaccurate due to the influence by
surrounding metal objects.
2. Do the compass measurement away from the PV panel by
holding the meter or placing meter on a horizontal surface
(0 degrees to 20 degrees tilt) pointing the tip of the meter in
the direction that the PV panel faces. Keep away from any
metal objects.
Note
The compass measurement is in reference to magnetic
north. The measurement is unreliable if the Meter is
placed on or near objects containing metal (such as solar
panels, metal roofs, and concrete surfaces with rebar).
≤ 90°
N

10
Compass Calibration
The Product contains a compass. The compass is affected by
metal in the environment.
Always recalibrate the compass:
Before the first use.
Each time you change the batteries.
When you change geographical locations.
When there is a significant change in the environment, for
example, new metal fittings.
1. Do the calibration outdoors, at least 2 m (6 ft) away from any
metal objects.
2. Push and hold the Switch button as you power on the Product
to enter compass calibration mode. The Product shows CAL
and the compass icon.
2 m (6 ft)

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3. Slowly turn the Product around all three axis in the space using
figure 8 movement (approximately 3 seconds/movement).
Continue turning the product while slowly rotating your body
360 degrees for three complete body rotations at a steady
pace, take at least 1 minute to complete the body rotation.
4. Slowly turn the Product around on the vertical axis
(approximately 2 seconds/movement). Continue to turn the
product while slowly rotating your body 360 degrees for
one complete rotation at a steady pace, take at least 1 minute
to complete the body rotation.
5. Turn off the Product. The Product stores the calibration data.
360°
360°

12
Maintenance
Battery Replacement
WCaution
To prevent damage to the Meter:
Remove the batteries if the Product is not used for an
extended period of time, or if stored in temperatures
above 50 °C. If the batteries are not removed, battery
leakage may result.
Be sure that the battery polarity is correct to prevent
battery leakage.
The battery compartment on the back of the Product makes it
easy to install or change the batteries. Use four (4) AA IEC LR6
batteries.
Note
Batteries are not pre-installed in the Meter.
1. Turn off the Product.
2. Use a screw driver to unscrew the captive screw.
3. Remove the battery cover.
4. Install batteries.
5. Replace the battery cover and secure it with the provided
screw.
6. Recalibrate the compass.
1
2
3AA 4x

13
Product Disposal
Dispose of the Product in a professional and environmentally
appropriate manner:
Delete personal data on the Product before disposal.
Remove batteries that are not integrated into the electrical
system before disposal and dispose of batteries separately.
If this Product has an integral battery, put the entire Product in
the electrical waste.
Cleaning
Periodically wipe the case with a damp cloth and mild detergent.
WCaution
To prevent damage to the Meter:
The Product contains no user-serviceable parts. To
avoid injury, or damage to the Meter, do not open the
case.
To avoid damaging the Product, do not use abrasives
or solvents to clean the Product case.
Storage
During long periods of non-use (>60 days), remove the battery
and store separately from the Product.
Service and Parts
Only a qualified technician should service the Product. For service
information, contact your nearest Fluke dealer or service center.
Specifications
Irradiance
Measuring range..................100 to 1400 W/m²
Note
Calibration is performed at a solar spectral irradiance of
AM1.5 (ASTM G-173).
Resolution ..............................1 W/m²
Measuring Accuracy...........±(5 % + 5 Digit)
Temperature Measurement
Measuring range (°C)..........-30 °C to 100 °C (-22 °F to 212 °F)
Resolution ..............................0.1 °C (0.2 °F / 1 °F @ >100 °F)
Measuring Accuracy...........±1 °C (±2 °F) @ -10 °C to 75 °C
(14 °F to 167 °F),
±2 °C (±4 °F) @ -30 °C to -10 °C
(-22 °F to 14 °F) and 75 °C to 100 °C
(167 °F to 212 °F)
Note
Temperature measurement response time: ~30 sec.

14
Inclination Angle
Measuring range..................-90° to +90°
Resolution ..............................0.1°
Measuring Accuracy...........±1.5° @ -50° to +50°
±2.5° @ -85° to -50° and +50° to +85°
±3.5° @ -90° to -85° and +85° to +90°
Note
Inclination accuracy is specified as the angle between a
vertical and the absolute horizontal plane/true horizontal
baseline. The Product is calibrated to true horizontal 0°.
Compass
Measuring Range.................0° to 360°
Resolution ..............................1°
Measuring Accuracy...........±7°
Note
Measurements valid for device inclination between -20°
and +20° to horizontal. Outside that range, --- shows on
the LCD. Result is in reference to magnetic north.
Memory
Type .........................................EEPROM
Size (kB/records)..................64 kB/6400
Recording Time ....................up to 17 hours
RTC.................................................Yes (super CAP supply)
Communication .........................LBT: only with SMFT models
Size.................................................150 mm x 80 mm x 35 mm
(5.90 in x 3.14 in x 1.37 in)
Weight...........................................231g (0.5 lb)
Power Supply and Battery Life
Batteries .................................4x AA IEC LR6
Battery Life (typical)............50 hours
Te m p e r a t u r e
Operating
IRR2-BT .............................-20 °C to 35 °C, 95 % RH
35 °C to 50 °C, 40 % RH
80PR-IRR...........................-30 °C to 100 °C
Storage ...................................-30 °C to 60 °C (humidity <80 %)
Altitude .........................................2000 m maximum
Ingress Protection ....................IEC 60529: IP40

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Electromagnetic Compatibility (EMC)
International...................... IEC 61326-1: Portable
Electromagnetic Environment,
CISPR 11: Group 1, Class A
Group 1: Equipment has intentionally generated and/or
uses conductively-coupled radio frequency energy that
is necessary for the internal function of the equipment
itself.
Class A: Equipment is suitable for use in all
establishments other than domestic and those directly
connected to a low-voltage power supply network that
supplies buildings used for domestic purposes. There
may be potential difficulties in ensuring electromagnetic
compatibility in other environments due to conducted
and radiated disturbances.
Caution: This equipment is not intended for use in
residential environments and may not provide adequate
protection to radio reception in such environments.
Korea (KCC) ...........................Class A Equipment (Industrial
Broadcasting & Communication
Equipment)
Class A: Equipment meets requirements for industrial
electromagnetic wave equipment and the seller or user
should take notice of it. This equipment is intended for
use in business environments and not to be used in
homes.
Wireless Radio Module
Frequency Range ................2.402 GHz to 2.480 GHz
Output Power........................8 dBm
SIMPLIFIED EU DECLARATION OF CONFORMITY
Hereby, Fluke declares that the radio equipment contained in this
Product is in compliance with Directive 2014/53/EU. The full text
of the EU declaration is available at the following Internet address:
http://www.fluke.com/red.

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LIMITED WARRANTY
This Fluke product will be free from defects in material and
workmanship for 1 year from the date of purchase. This warranty
does not cover fuses, disposable batteries, or damage from
accident, neglect, misuse, alteration, contamination, or abnormal
conditions of operation or handling. Resellers are not authorized
to extend any other warranty on Fluke’s behalf. To obtain service
during the warranty period, contact your nearest Fluke authorized
service center to obtain return authorization information, then
send the product to that Service Center with a description of the
problem.
THIS WARRANTY IS YOUR ONLY REMEDY. NO OTHER
WARRANTIES, SUCH AS FITNESS FOR A PARTICULAR PURPOSE,
ARE EXPRESSED OR IMPLIED. FLUKE IS NOT LIABLE FOR ANY
SPECIAL, INDIRECT, INCIDENTAL OR CONSEQUENTIAL
DAMAGES OR LOSSES, ARISING FROM ANY CAUSE OR THEORY.
Since some states or countries do not allow the exclusion or
limitation of an implied warranty or of incidental or consequential
damages, this limitation of liability may not apply to you.
11/99