BT42C - Food thermometer Comark - Free user manual and instructions

Product Type	Digital Food Thermometer
Brand	Comark
Model	BT42C
Dimensions (approx.)	20 cm x 3 cm x 1.5 cm (probe included)
Weight (approx.)	About 50 g (with battery)
Power	1 CR2032 battery (included)
Temperature range	-50 °C to +300 °C
Accuracy	±1 °C (-20 °C to +100 °C), ±2 °C beyond
Probe type	Stainless steel needle probe (approx. 12 cm)
Response time	About 3 to 5 seconds
Main functions	Digital display, instant measurement, hold function (HOLD), auto power off, low battery indicator
Measurement units	°C / °F (selectable)
Display	LCD screen, about 2.5 cm diagonal
Housing material	ABS plastic
Maintenance and cleaning	Clean the probe with a damp cloth and mild soap. Do not immerse the housing. Dry completely before storage.
Safety	Do not expose to temperatures above 300 °C. Keep out of reach of children. Do not use in microwave.
Spare parts and repairability	The battery is replaceable. No other spare parts available. Device not user-serviceable.
Warranty	2 years (parts and labor)
General information	Thermometer compliant with CE and RoHS standards. Ideal for cooking meat, fish, and confectionery.

Frequently Asked Questions - BT42C Comark

How to use the BT42C thermometer?

Insert the probe into the food to the desired depth. Turn on the device by pressing the ON button. The temperature is displayed within seconds. Use the HOLD button to freeze the reading, then turn off the device.

How to replace the battery of the BT42C?

Open the battery compartment located on the back of the housing using a Phillips screwdriver. Replace the used battery with a new CR2032 battery, respecting polarity. Close the compartment.

Does the thermometer display negative temperatures?

Yes, the BT42C measures from -50 °C to +300 °C, allowing you to check freezer temperature.

How to clean the probe?

Wipe the probe with a soft cloth moistened with soapy water. Rinse and dry thoroughly. Never immerse the housing in water.

Does the thermometer turn off automatically?

Yes, the device automatically turns off after about 10 minutes of inactivity to save the battery.

What to do if the display is unstable or incorrect?

Check that the battery is in good condition and properly installed. Clean the probe tip. If the problem persists, contact Comark customer service.

Can the BT42C be used in an oven or microwave?

No, the thermometer is not designed for use in an oven or microwave. It is intended for spot measurements only.

Is the BT42C waterproof?

No, only the housing is splash-resistant. Avoid any immersion. The stainless steel probe can be rinsed, but the housing must remain dry.

How to calibrate the thermometer?

Immerse the probe in a mixture of crushed ice and water (0 °C). If the reading is not accurate, use a small screwdriver to adjust the calibration potentiometer on the side of the housing (fine adjustment).

What is the warranty of the Comark BT42C thermometer?

The warranty is 2 years from the date of purchase, covering manufacturing defects. Keep the receipt as proof of purchase.

USER MANUAL BT42C Comark

BLUETOOTH THERMOMETER

BT42

BT42C

BT48

BT48C

For BT42C Model only:

Meets the requirements of DIN EN 13485:2002

"Thermometers for measuring the air and product temperature for the transport, storage and distribution of chilled, frozen, deep-frozen/quick frozen food and ice-cream"

Introduction

Comark BT40 series Bluetooth thermometers have either a Lumberg or sub-miniature connector and are designed for use with interchangeable probes. They have a high strength, polycarbonate case with rubber over moulding. This offers a high level of strength and durability. All models incorporate a clock, countdown timer, MAX/MIN and data hold feature.

Comark's Bluetooth thermometers are designed for use with the Comark Kitchen Checks App to automate your HACCP records and reporting. Download the Comark Kitchen Checks App from Google Play or Apple Store. For larger organizations the Comark API can be used to integrate Bluetooth thermometers into existing HACCP programs.

When connected via Bluetooth, temperature updates are sent to the tablet or phone and displayed by the App.

For more information visit: www.comarkinstruments.com/kitchen-checks-pro.

Safety Information

Prevent Electric Shock

- To avoid electric shock do not allow the probe to come into contact with live electrical parts.

Maintaining Product Safety & Preserving Comark Warranty

• Only use the instrument for its intended purpose.
• Do not use in a microwave oven.
• Do not use the instrument beyond its operating temperature range.

Waste Electrical & Electronic Equipment Directive (WEEE)

- This instrument must not be disposed of in general waste. Instead take it to your local authority's recycling centre for small electrical goods. Within the European Union, Comark operates a Take Back scheme for our end-of-life products. Contact us for details.

- Dispose of waste batteries in local recycling facilities.

FCC Safety Warning

This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions:

(1) This device may not cause harmful interference, and
(2) This device must accept any interference received, including interference that may cause undesired operation.

Overview of display symbols

A Indicates the HOLD has been selected
B Setting menu item to ON/OFF
C Indicates low battery
D Indicates a fault with the Bluetooth - Contact Comark for support if fault indicated
E Indicates probe type
F Indicates the temperature scale in use
G Alarm indication
H Indicates countdown active
I Indicates AM or PM for clock
J Clock, countdown and timer display
K Indicates MAX or MIN has been selected
L Indicates Bluetooth connection status
M Main display for temperature

Operation

Connecting Probes to the Thermometers

BT40 series thermometers have either sub-miniature or Lumberg sockets for probe connection and offer a class leading choice between Comark thermistor, type T thermocouple or type K thermocouple probes.

The polarity of the connector must always be checked before connecting thermocouple probes to BT40 series thermometers. A probe of the correct thermocouple type must also be selected to match the specific thermometer. BT40 series thermometers with Lumberg sockets will automatically detect the sensor type of the probe connected. The LCD will then indicate thermistor probes as "PST", and type T thermocouple probes as "T". Models with Sub-Min connector are of fixed thermocouple type, see specifications for details

Switching On and Off

Press and hold the “HOLD” button on the keypad to switch the thermometer on. After a short pause, the display will show the current model of the instrument and will then revert to normal temperature display. The current time is also permanently displayed on the LCD. To switch off is a long press on the “HOLD” button.

Data Hold

All BT40 series thermometers have a data hold facility. If the "HOLD" button is pressed at any time during normal temperature mode, the current temperature will be held on the display. To release press "HOLD".

MAX/MIN

All BT40 series thermometers have a MAX/MIN function. Press "MAX/MIN" for MAX temperature reading and again for MIN temperature reading. Press "MAX/MIN" to resume normal temperature readings. To clear MAX/MIN, press and hold "MAX/MIN" until the display returns to normal measurement.

Countdown Timer

All BT40 series thermometers have a countdown timer. This function is activated from the Set-Up Menu – see section below, and can be calibrated in seconds or minutes. Pressing the countdown timer button will start this function. Pressing the button again during the countdown period will stop the count. The instrument will beep for 30 seconds at the end of a countdown period to indicate to the user that it has been completed.

Auto Switch Off/Power Saving Mode

BT40 series thermometers have a selectable auto-switch off feature. This is set to 3 minutes from the factory. Auto-switch off timer starts on the last button press. Please refer to Set-Up Menu for instructions on changing this setting.

Set-Up Menu

BT40 series thermometers have a hidden menu structure that is used to set up a number of parameters within the instrument.

To enter the set-up menu first ensure the instrument is off, then press the Count Down button and keep this held down while pressing the "HOLD" (ON/OFF) button to switch the instrument on. After the thermometer has completed its self-

checks, it will enter the menu.

N.B. After each menu item use the Bluetooth button to save and move to the next menu item.

Clock selection is the first item in the menu:

Clock – the display will show 'CLOC'

Use the UP and DOWN buttons to adjust the clock time up or down.

Countdown Timer – the display will show 'Cd'

Use the UP and DOWN button to select timer on or off. Use the UP and DOWN buttons to scroll up and down in seconds up to 5 minutes then in 1 minute intervals up to 60 Minutes.

Auto Power OFF – the display will show 'AOFF'

Use the UP and DOWN Buttons to scroll between the available options of None, 3, 10, and 30 minutes.

Scale – the display will show 'SCAL'

After entering the SCALE menu, use the UP and DOWN Buttons to scroll between the available scales.

High Alarm – the display will show 'HIAL'

Use the UP and DOWN Buttons to select or de-select high alarms, then select the required high alarm value.

Low Alarm – the display will show 'LOAL'

Use the UP and DOWN Buttons to select or de-select low alarm, then select the required low alarm value.

On Alarm the speaker will bleep, press any key to stop.

Bluetooth MAC Address

The Bluetooth MAC address will be indicated next, in blocks of 4 numbers on alternate seconds. Simply press the Bluetooth button to exit setup and return to normal operation.

Bluetooth Operation

To switch on the Bluetooth, press the Bluetooth button. Bluetooth radio will advertise for 60 seconds (Bluetooth Symbol will flash during this time). If after this time a successful connection is not made, the Bluetooth radio will shut down, leaving only the thermometer active. To re-attempt making a Bluetooth connection, simply press the Bluetooth button again.

Note: The advertising text for searching is BTXX 12345678, where XX is the model number, e.g. 42 or 48 and 12345678 is the serial number.

Taking Measurements

Having successfully connected the Bluetooth Thermometer to Comark Kitchen Checks app, check that the Bluetooth symbol in the LCD is solid. To record the displayed reading press the Bluetooth button on the keypad. The temperature display will flash. The app will guide you through storing the temperature record.

Note: The app will display the reading as indicated on the LCD, e.g. including MAX/MIN or Data Hold values.

Maintenance

Cleaning

BT40 series thermometers are dust and splash proof and will withstand harsh environments. Use a damp cloth or warm soapy water to remove deposits and prevent them from hardening or becoming sticky.

Use only domestic kitchen cleaners or mild detergents to clean this instrument. Do not use aggressive cleaning chemicals or solvents, these will attack plastics and cause damage.

Caution: Do not place any BT40 series thermometers in a dishwasher.

Battery Replacement

The low battery symbol appears on the display when the battery voltage has reduced. Battery replacement is recommended at this time.

To replace the battery, remove the battery cover retaining screw on the rear of the instrument, using the correct size *screwdriver. Remove the two cells, wait for a minimum of 30 seconds and replace with Alkaline or Lithium (L91) cells. Be careful to observe the correct polarity. Take care not to over-tighten the screw when refitting the cover.

Note: The BT40 series thermometers will not work if the battery compartment is incorrectly fitted or missing. In this instance, the display will show 'OPEn'. Please note the small pip on the inside of the battery cover, which must fit into the hole provided in the back of the case.

Technical Support

Please see: www.comarkinstruments.com or www.comarkUSA.com for details.

Warranty

Each Comark product is warranted to be free from defects in material and workmanship under normal use and service. The warranty period is one (1) year, unless otherwise stated, and the warranty period begins on the date of shipment. Temperature probes are warranted for six (6) months.

The warranty extends only to the original buyer or end-user of a Comark authorized reseller. This warranty does not cover damage resulting from normal wear and tear, abuse, misuse, accidental breakage, negligence, defects caused by modifications, repair and servicing not made or authorised by Comark Instruments, damage caused by handling, operating, storing, or using the product outside the intended uses described by our product literature. Disposable batteries are also exempt from warranty.

Warranties on dishwasher safe models apply only where the product has been used in a commercial dishwasher. Comark Instruments products are not suitable for use or cleaning in domestic dishwashers.

Comark's warranty obligation is limited, at Comark's option, to refund of the purchase price, free of charge repair, or replacement of a defective product returned within the warranty period. Products must be returned to Comark

or one of Comark's authorized service agents.

This warranty is the buyer's sole and exclusive remedy and is in lieu of all other warranties, express or implied, including but not limited to any implied warranty of fitness for a particular purpose. Comark shall not be liable for any special, indirect, incidental or consequential damages or losses, including loss of data, whether arising from breach of warranty or based on contract, tort, reliance or any other theory. Since some countries or states do not allow limitation of the term of an implied warranty, or exclusion or limitation of incidental or consequential damages, the limitations and exclusions of this warrant may not apply to every buyer.

To obtain service during the warranty period, visit the Service and Repair page on our website - www.comarkinstruments.com or www.comarkUSA.com for instructions on obtaining a Return Material Authorization (RMA) then send the product to our Service Centre with a description of the problem.

Specification

General Specification

Measurement

Measurement RangeThermistorType T ThermocoupleType K Thermocouple

Scales

Displayed Resolution0.1°1°

Instrument AccuracyThermocouple

System AccuracyThermistorType T Thermocouple*

Temperature CoefficientThermistorThermocouple

Ambient Temperature Range

Display

Power

Battery Life (continuous)

Enclosure Ingress Protection

	Thermistor 10 K Ohms unicurveThermocouple type T and K6-pin Lumberg and Sub-Min Connectors
	-40°C to +125°C / -40°F to +257°F-200°C to +400°C / -328°F to +752°F-200°C to 1372°C / -328°F to +2502°F
	°C / °F
	>-100°<1000°≤ -100°≥ 1000°
	0.1% ±0.2°C / ±0.4°F full range @ +23°C /+73°F Ambient
	±0.3°C 0°C to +70°C / ±0.6°F +32°F to +158°F±0.5°C -20°C to +100°C / ±0.9°F -4°F to+212°F±0.5°C 0°C to +70°C / ±0.9°F +32°F to +158°F*Typical accuracy with a Comark probe
	< 0.005 degree/degree< ± 0.01 % of reading ±0.02 °C/°C change from+23°C / ±0.02°F/°F change from +73°F
	-20°C (-4°F) to +50°C (122°F) operating
	4 digit, 12.5 mm LCD
	Two Type I.E.C. LR6 Size AA – Alkaline or*Lithium recommended.*Lithium is recommended for Low Temperatureenvironments, constantly below 10°C/50°F andwill give approximately 50% increased batterylife when used in lieu of Alkaline.
	Up to 1000 hours with Bluetooth enabledUp to 5000 hours with Bluetooth disabled
	IP65

Weight & Measures

Dimensions

Case Size

Weight

Case Materials

Case

152 x 58 x 22/27 mm / 6" x 2.3" x 1.1" 178g / 6.3 ozs

Mixed: ABS & PC with BioCote® anti-microbial protection moulded in.

Compliance

EMC Directive

EMC Standard

Radiated RF emissions 30MHz-6GHz

Electrostatic discharge

Radiated RF immunity *

Power frequency magnetic field immunity

Broadband Data Transmission Systems -

Essential Requirements

Radio Equipment-Common Requirements

Broadband Data Transmission Systems

Product Safety

RoHS Directive

* Readings may be temporarily affected in the presel

	EC Directive 2014/30/EUEN 61326-1:2013, EN 61326-2-1:2013 (Portable Equipment Environment)EN 55011:2009+A1:2010EN 55022:2010 CFR 47 Part 15.109EN 61000-4-2:2009EN 61000-4-3:2006+A1:2008+A2:2010EN 61000-4-8:2010EN 300 328 1.8.1 (2012-06)EN 301 489-1 1.9.2 (2011-09)EN 301 489-17 2.2.1 (2012-09)
	EN 61010-1:2010 Safety requirements for electrical equipment for measurement, control and laboratory use. Part-1: General requirementsEN 60950-1:2006+A11:2009+A1:2010+A12:2011 ITE Safety
	EC Directive 2011/65/EU RoHS

nce of radio frequency interference.

Appendix 1

BT40 Series Model Range Options

Models BT42 BT42		T Type	BT48 K Type
Part No. BT42C	BT42 BT48		BT48C
Options
Bluetooth	✓ ✓ ✓
Countdown Timer	✓ ✓ ✓
Data Hold	✓ ✓ ✓
Real Time Clock	✓ ✓ ✓
MAX/MIN	✓ ✓ ✓
Scale Selection	✓ ✓ ✓
High Alarm	✓ ✓ ✓
Low Alarm	✓ ✓ ✓
Type T	✓	✓	-
Type K - -			✓
Thermistor	✓	✓	-
Connector* L L S
Auto Off	✓ ✓ ✓
Splashproof	✓ ✓ ✓

* L – Lumberg
S - Sub-Miniature

Introduction

Assistance technique

152 × 58 × 22/27 mm/6" × 2,3" × 1,1"

178 g/6,3 oz

* L – Lumberg
S - Sub-Mini

Introducción

Emissioni RF irradiate 30 MHz-6 GHz

52 Hurricane Way, Norwich,

Norfolk NG6 6JB United Kingdom

Tel: [phone]

Email: [e-mail]

Website: www.comarkinstruments.com

Comark Instruments

PO Box 500

Beaverton, OR 97077 USA

Tel: [phone]

Email: [e-mail]

Website: www.comarkusa.com

Part No 20580-1 (02-19)

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