Wahl Heat Spy DHS520 User manual

Wahl Heat Spy®
DHS520/520B
Portable Infr ar ed Thermome t er
User Manual
Palmer Wahl Inc.
234 Old Weaverville Road
Asheville, North Carolina 28804
Telephone: [phone]
Fax: [phone]
[email protected]
www.palmerwahl.com
WD1014 Rev B 10/3/07

User Manual Wahl DHS520
The Quality Management System of Wahl Instruments Inc. is approved for the
design, manufacture, and sales of temperature and pressure measuring devices for
a variety of industries.
This product complies with current European directives
relating to electromagnetic compatibility and safety (EMC
directive 89/336/EEC; Low voltage directive 73/23/EEC).
All packaging material used for this product can be recycled.
Quality Assurance

Wahl DHS520
User Manual
SAFETY INFORMATION
SYMBOL PUBLICATION DESCRIPTION
Direct
IEC 417, No.5031
Current
IEC 417, No.5032
Alternating
Current
IEC 417, No.5033
Both direct and
alternating current
3
IEC 617-2, No.02-02-06
Three-phase alternating
Current
IEC 417, No.5017
Earth
(ground) terminal
IEC 417, No.5019
Protective conductor
terminal
IEC 417, No.5020
Frame or chassis
terminal
IEC 417, No.5021 Equipotentiality
IEC 417, No.5007 On (supply)
IEC 417, No.5008 Off (supply)
IEC 417, No.5172
Equipment protected
throughout by double
insulation or reinforced
insulation (equivalent to
Class II of IEC 536)
Safety Information

User Manual Wahl DHS520
SAFETY INFORMATION (CONTINUED)
SYMBOL PUBLICATION DESCRIPTION
ISO 3864, No. B.3.6
WARNING
Risk of electric shock
ISO 3864, No. B.3.1 Caution
BS EN 100015
BS EN 60825-1
Observe precautions for
handling electrostatic
discharge sensitive
devices
WARNING
Laser Radiation
Refer to the operating
instructions
Note
Do not dispose of this product
together with your household
waste. Please refer to the
information of your local
community or contact our
distributors regarding the proper
handling of end-of-life electric
and electronic equipment.
Recycling of this product will
help to conserve natural
resources and prevent potential
negative consequences for the
environment and human health
caused by inappropriate waste
handling
Safety Information

Wahl DHS520
User Manual
TECHNICAL SUPPORT
Technical support for the Wahl DHS520 portable infrared thermometer can be
obtained by using the contact details given on the cover of this User Guide or
by e-mail at the following address: [e-mail].
Technical Support

User Manual Wahl DHS520
PRODUCT WARRANTY
12 MONTH WARRANTY
Thank you for purchasing your new product from Palmer Wahl. This warranty
covers product malfunctions arising from defects in design or manufacture.
The warranty period begins on the date product is shipped from the factory in
Asheville, NC.
EXCLUSIONS FROM WARRANTY
It should be noted that costs associated with calibration checks which may be
requested during the warranty period are not covered within the warranty. Wahl
reserves the right to charge for service/calibration checks undertaken
during the warranty period if the cause is deemed to fall outside the terms
of the warranty. This Wahl manufacturer’s warranty does not cover product
malfunction arising from:
• incorrect electrical wiring.
• connection to electrical power sources outside the rating of the product.
• physical shock (being dropped, etc.) and impact damage.
• environmental conditions exceeding the IP/NEMA rating of the product.
• environmental conditions outside the ambient temperature, humidity
and vibration rating of the product.
• environmental contamination (solvent vapors, deposition of airborne
contamination, cooling liquids of non-neutral pH, etc.).
• overheating as a result of interruption of water/air flow through cooling
jackets or of incorrect installation.
• inappropriate modification (drilling holes in thermometer bodies, etc.).
• inappropriate recalibration resulting in calibration outside specification.
• attempted repair by a non-Wahl-authorized repair center.
Product Warranty

Wahl DHS520
User Manual
CONTENTS
QUALITY ASSURANCE
SAFETY INFORMATION
TECHNICAL SUPPORT
PRODUCT WARRANTY
1.0 INTRODUCTION 1
1.1 General Introduction 1
1.2 About Wahl DHS520/520B Portable Thermometers 1
1.3 Nomenclature 3
2.0 SPECIFICATIONS 4
3.0 THERMOMETER DESCRIPTION 5
3.1 Wahl DHS520/520B 5
4.0 THERMOMETER POWER SUPPLY OPTIONS 6
4.1 Using a Battery 6
4.2 Using an External Power Source 7
5.0 THERMOMETER CONTROLS 8
5.1 ON/OFF Switch 8
5.2 Trigger Operation 8
5.3 LCD Display Panel & Keypad 8
5.4 Adjustable Eyepiece 9
5.5 Optical Focus Ring 9
5.6 External Connection Socket 9
6.0 OPTICS 10
6.1 Target Size Calculation 10
6.2 Lens Options 11
6.3 Fitting a Close-up Lens 11
6.4 Fitting a Dark Filter 11
6.5 Fitting a Dark Filter to a Close-up Lens 11
6.6 Eyepiece Optics 12
Contents

Wahl DHS520
CONTENTS (CONTINUED)
User Manual
7.0 DISPLAY PANEL MODES 13
7.1 Introduction 13
7.2 Measure Mode 13
7.3 Menu Mode 17
7.4 Menu Mode - Icon Descriptions 18
8.0 OPERATIONAL (TRIGGER) MODES 25
8.1 Introduction 25
8.2 Classic Mode 25
8.3 History Mode 26
8.4 Burst Mode 27
9.0 THERMOMETER OPERATION 28
9.1 Simple temperature measurement 29
9.2 Complex temperature measurement 29
10.0 DATA STREAMING 32
10.1 Serial Communications 32
10.2 ‘Bluetooth’ Wireless Comms (Wahl DHS520B) 33
11.0 EMISSIVITY 34
11.1
Refractories 34
11.2
Alloys 35
11.3
Metals 36
11.4
Miscellaneous 37
12.0 MAINTENANCE 38
13.0 ACCESSORIES AND SPARE PARTS 39
13.1 Accessories 39
14 USER CONFIGURATION RECORD 42
APPENDIX
Serial Communications Data Logging Protocol
Contents

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User Manual Wahl DHS520
1.0 INTRODUCTION
1.1 General Introduction
This publication gives you the information required to safely operate
Wahl DHS520/520B portable thermometers.
It is important to check all equipment with which you have been supplied, and
read all the literature provided with the Wahl DHS520/520B before using the
thermometer for the first time. Additionally, keep all supplied literature
readily available, for reference when the equipment is in general use.
The equipment must only be used and maintained by suitably trained personnel,
capable of following the procedures and guidelines given in this User Guide
and the Wahl DHS520/520B Quick-Start Guide.
1.2 About Wahl DHS520/520B Portable Thermometers
The Wahl DHS520/520B is a highly accurate, portable, short wavelength
infrared thermometer, designed to measure and display temperatures in the
range 550 to 3000°C/1022 to 5432°F. The thermometer can also measure
and display these temperatures in Kelvin and °Rankine.
The target temperature is measured and displayed in four simultaneous
measurement types: ‘Peak’, ‘Continuous’, ‘Average’ and ‘Valley’. You can
choose which of these measurements is displayed in the internal viewfinder
display.
The wide angle (9°) field of view and the small (1/3°) measurement point ensure
that the target is defined clearly and accurately. The focus is continuously
variable from one meter to infinity. Auxiliary lenses are available, which provide
close focus capability.
The emissivity compensation setting can be controlled digitally, via the simple
to use, icon-based menu system, which is available at the touch of a button.
The operating waveband has been chosen specifically to minimize errors due
to uncertainty in emissivity, while eliminating the effects of atmospheric
absorption.
Both models feature RS232 serial communications, with simple configuration
of the available data output formats. The Wahl DHS520B variant also features
user-friendly ‘Bluetooth’ communications.

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Wahl DHS520 User Manual
Fig. 1 Wahl DHS520/520B portable infrared thermometer

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User Manual Wahl DHS520
1.3 Nomenclature
The instrument detail label is positioned centrally, on the right-hand side of the
Wahl DHS520/520B casing. The Instrument Type specifies the
thermometer variant and the Serial Number is a unique identification number,
incorporating the manufacture date code (see Fig. 2)
Upon receipt of the instrument, make a note of the Instrument Type and Serial
Number in the spaces provided below.
Instrument Type:
Serial Number:
100 - (550 to 3000°C/1022 to 5432°F, 1µm wavelength)
B - (‘Bluetooth’ communications variant)
123456 - (unique instrument serial number) 01 - (date code)
315002
Fig. 2 Wahl DHS520/520B portable thermometer nomenclature
A second instrument label is positioned on the instrument chassis, in the battery
compartment. This label displays the instrument serial number, the unique
‘Bluetooth’ address (Wahl DHS520B variants only) and the recommended battery
details.

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Wahl DHS520
User Manual
2.0 SPECIFICATIONS
Temperature range: 550 to 3000°C / 1022 to 5432°F (actual)
600 to 3000°C / 1112 to 5432°F (specified)
Viewfinder display: 4-digit temperature in 1°steps
External display: Peak, Continuous, Average and Valley temperatures
on LCD display panel
Optical system: 9°field of view with 1/3°measuring circle; single-lens-
reflex system; with eyepiece adjustment from -3.75 to
+2.5 diopters
Focusing: 1m/39.4in. to infinity (standard) from body datum
nominally 450 to 620mm/17.7 to 24.5in. (135 c.u.lens)
nominally 215mm/8.5in. fixed focus (110 c.u. lens)
Minimum target diameter: 4.8mm/0.19in. at 101.4cm/39.9in. (standard)
1.8mm/0.07in. (135 close-up lens)
0.4mm/0.02in. (110 close-up lens)
Detector: silicon photocell
Spectral response: nominally 0.85 to 1.10µm
Emissivity adjustment: 0.10 to 1.20, in 0.01 steps
Response time: digital display update: 0.5 seconds (approx.); peak and
valley operation: acquisition time 30ms (approx.)
Operating temperature range: 0 to 50°C (32 to 122°F)
Storage temperature range: -20 to 60°C (-4 to 140°F)
Accuracy: <0.25% of reading (K or °R)
Repeatability: <1°C
Drift with ambient temperature: <0.15%(C)/10°C, <0.10%(F)/10°F
Power source: one 9V dry battery (Duracell 6LR61/12232 or
equivalent); typical alkaline battery life: >100hrs in
‘from-factory’ configuration
Digital outputs: ASCii code; RS232 serial out
IP rating: IP40
Dimensions: 210 x 70 x 140mm / 8¼ x 2¾ x 5½in.
Weight: 800g/1lb12oz (without battery)
Standard accessories: lens cap; 9V alkaline battery; protective window; dark
glass eye protection filter; wrist strap
Optional accessories: type 135 and 110 close-up lenses; protective hard
carry case.

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User Manual Wahl DHS520
3.0 THERMOMETER DESCRIPTION
3.1 Wahl DHS520/520B
2 1 12
3
4
11
5
6 10
7
8
9
315003
1 LCD display panel 7 Trigger switch (2 position)
2
Keypad
8
External connection cover
3
Optical focusing ring
9
Tripod mounting hole
4
Protective window
10
Adjustable wrist strap
5
Lens cap
11
Adjustable eyepiece
6
ON/OFF switch
12
Battery compartment cover
Fig. 3 Wahl DHS520/520B portable infrared thermometer description

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Wahl DHS520
User Manual
4.0 THERMOMETER POWER SUPPLY OPTIONS
4.1 Using a Battery
The Wahl DHS520/520B portable thermometer is designed to be powered by a
9V dry cell battery. A Duracell 6LR61/12232 (or equivalent) battery is supplied
with the thermometer. The battery is fitted as follows:
Fig. 4
Fig. 5
Fig. 6
Fig. 7
315004
315005
315006
315007
1) Before inserting or changing the battery, ensure
that the thermometer is switched OFF.
2) The battery cover is on the top surface of the
thermometer body (see Fig. 4).
3) Press down on the finger grip of the battery cover
to disengage the cover catch and slide the cover
back to fully expose the battery compartment (see
Fig. 5).
4) Align the battery so that the terminals
correspond wit h the label in the battery
compartment (see Fig. 6).
5) Insert the battery, ensuring that the contact springs
engage centrally into the battery terminals. Slide
the battery cover back into place and ensure that
the cover catch engages with the thermometer
chassis (see Fig. 7).
6) With the battery fitted, switch the instrument on
and check for correct operation (see Section 7.0).
When switched on, a battery power indicator
appears in the LCD display panel, which gives an
indication of how much power is left in the battery.
When the battery needs replacing, the battery
indicator on the LCD display panel will flash. To
prolong the remaining battery life, the display
backlight and ‘Bluetooth’ (DHS520B only) should
be switched off. The battery should be changed
as soon as possible in order to ensure that the
readings from the instrument remain within
specification.

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User Manual Wahl DHS520
Note
It is recommended that a fully charged spare battery is kept with
the thermometer at all times.
To preserve battery lifetime, the thermometer has the following power saving
features:
• If the thermometer is in Menu Mode for over one minute without any
key being pressed, the display returns to Measure Mode.
• If the thermometer is in Measure Mode for over two hours without any
key being pressed, the instrument is switched off.
4.2 Using an External Power Source
Although the Wahl DHS520/520B portable thermometer is designed to
be powered by an internal battery, it can be powered by a suitable external
power source (9 to 12V d.c./100mA rated).
Note
If the thermometer is to be used with an external power source,
ensure that the internal battery is removed before applying
external power.
To connect an external power source:
1) Switch off the thermometer and remove the battery.
2) Connect the external power source (9 to 12V d.c./100mA rated) to a
‘HIROSE’ connector (HR10-10P-12P). Connect the ‘positive’ to pin 5
and the ‘0V’ to pin 7.
3) Remove the rubber cover from the external connection socket, located
near the base of the thermometer (see Fig. 3, item 8).
4) Connect the ‘HIROSE’ plug to the external connection socket.
5) Switch the thermometer ‘ON’ and check for correct operation.

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Wahl DHS520
User Manual
5.0 THERMOMETER CONTROLS
5.1 ON/OFF Switch
a
Fig. 8
315008
b
The On/Off switch is on the left-hand side of the
thermometer (see Fig. 3, item 6). The switch has two
push buttons, Off (a) and On (b).
A single press of the switch will activate/de-activate
the unit.
5.2 Trigger Operation
Fig. 9
315009
c
The Trigger (c) is on the thermometer handle (see Fig.
3, item 7). The trigger function depends upon the
chosen mode of operation: Classic, History or Burst.
In Classic mode, the trigger has one function, to read
and display temperature. In History and Burst modes,
the trigger activates advanced functions within the
thermometer (see Section 8.0).
5.3 LCD Display Panel & Keypad
315010
d
Fig. 10
The LCD display panel (d) is on the left-hand side of
the thermometer body (see Fig. 3, item 1). It operates
in two modes: Measure Mode and Menu Mode.
In Measure Mode, the scene temperature and
thermometer setup information (including battery life
indication) is displayed.
In Menu Mode, the function menus of the thermometer
can be accessed. You can select functions and set
the required parameters, as described in Section 7.0.
There are three action keys on the Keypad to the left
of the main display: (Scroll Up), (Scroll Down)
and (Enter/select). These are used to navigate
around the various menus and displays.