Laserliner ThermoMaster Digital Thermometer Instruction Manual
- June 9, 2024
- Laserliner
Table of Contents
Laserliner ThermoMaster Digital Thermometer
Read the operating instructions and the enclosed brochure „Guarantee and additional notices“completely. Follow the instructions they contain. Safely keep these documents for future reference.
Function/Application
The digital thermometer is used to measure temperature and temperature
differences with the aid of ex-changeable type K thermcouples/sensors. The
digital thermometer is predominantly used for temperature measurement in
laboratories and in industrial applications. With the aid of the MAX function
it is possible to determine limit temperature infringements in extended series
of measurements. The 1/4“ tripod con-nection provides a fl exible locking
facility for stationary setups.
Safety information
- Only hold the test prods by the handles. Do not touch the test prods, they can become very hot during the measuring procedure.
- Wherever possible the test prods should not be operated with an external voltage supply; if this is unavoidable pay particular attention to the maximum voltage with respect to earth potential and the maximum voltage between the two inputs T1 and T2. To avoid damaging the device, the external vol-tage supply must not be higher than 24 V AC or 60 V DC. Please note that the test prods are electrically conductive and may irreparably damage the test piece when measuring in connection with an external voltage supply.
- Use under high voltages or under high electromagnetic alternating fi elds can have an influence on the measuring accuracy.
- The device must only be used in accordance with its intended purpose and within the scope of the specifi cations.
- If you are working with voltages higher than 24 V AC/60 V DC, exercise extreme caution. Touching the electrical conductors at such voltages poses a risk of life-threatening electric shocks.
- If the device comes into contact with moisture or other conductive residues, work must not be carried out under voltage. When using the device outdoors, make sure that the weather conditions are appropriate and/or that suitable protection measures are taken.
- The measuring tools and accessories are not toys. Keep out of reach of children.
Symbols
Warning about hazardous electrical voltage: Unprotected live components inside the device housing are capable of posing a risk of electric shock.
Danger area warning
Protection class II: The test device has reinforced or double insulation.
Earth potential
Important notes. Must be observed.
General information
- If the thermometer is subject to large fluctuations in the ambient temperature, after the temperature has stabilised, wait 20 minutes before performing a measurement.
- Always ensure adequate thermal coupling at the measuring point in order to avoid measuring errors caused by temperature loss.
- Please note that all thermometers with a contact sensor infl uence the measurement and their thermal capacity can reduce the actual temperature. More thermal energy should therefore be applied to the thermocouple than it can dissipate.
- OL is shown in the display when no measuring sensor is connected.
- The thermometer shows OL when the measured temperature is outside the measuring range.
- Only use the correct types of thermocouple plugged in at the K-type connection; the wrong type of thermocouple can cause considerable measuring errors.
- In addition to being subject to ageing, a thermocouple is also greatly depending on the operating condi-tions and should therefore be checked regularly.
- High pressure or mechanical deformation can change the grid structure and therefore have an influence on the thermoelectric voltage output.
Pay attention to the polarity information on the thermocouple as well as on the device connection.
OVERVIEW
- LC display, 3.5 segments, max. 1999
- ON/OFF
- Degrees Celsius
- Hold current measured value
- Degrees Fahrenheit
- Temperature K-type input T2
- Differential temperature K-type input T1-T2
- Temperature K-type input T1
- Measured value resolution
- MAX value
- Display illumination
- 1/4“ tripod connection
- Battery compartment
- K-type input T2
- K-type input T1
- a Units:
- Degrees Celsius/Fahrenheit
- b Measured value
- c Negative measured value
- d MAX value
- e Hold current measured value
- f Temperature K-type input T1
- g Temperature K-type input T2
- h Differential temperature Ktype input T1-T2
ON/OFF
This display appears when no corresponding thermocouple is connected or the measuring range has been exceeded.
Temperature measurement (T1, T2, T1-T2)
The temperature T1 or T2 is measured and displayed by pressing button „T1“ or
„T2“. A thermocouple (type K) must be plugged in at connection T1 or T2.
The differential temperature can be determined by pressing button „T1-T2“ when
thermocouples are plugged in at both connections.
MAX-/HOLD function
The maximum temperature in an extended series of measurements is determined by
pressing the „MAX“ button. The HOLD function shows the last measurement or
measured value in the display.
Measured value resolution (0.1 °C/1.0 °C)
This function changes the measurement resolution is changed between 0.1 °C and
1.0 °C. The resolution of 0.1 °C is particularly useful for measurements ≤100
°C where it is necessary to determine the temperature exactly. A resolution of
1.0 °C is recommended for measuring higher temperatures.
The device should be checked regularly to ensure it is functioning correctly. Calibration intervals of 1 year are recommended.
Technical data
| Measuring range, measuring system | -50 °C … 1300 °C |
|---|---|
| Accuracy, measuring system | |
| -50 °C … 0 °C | ±2 °C |
| 0 °C … 1000 °C | ±(0.5 % of displayed value +1 °C) |
| 1000 °C … 1300 °C | ±(0.8 % of displayed value +1 °C) |
| Resolution | 0.1 °C/1 °C selectable |
| Unit of measurement | °C/°F selectable |
| Measuring range, thermocouple | |
| ThermoProbe K | -50 °C … 800 °C |
| ThermoSensor Air | -50 °C … 800 °C |
| ThermoSensor Tip | -50 °C … 800 °C |
| Accuracy, thermocouple | |
| ThermoProbe K | ±2.5 K (-50 °C … 200 °C) |
| ThermoSensor Air | ±2.5 K (-50 °C … 333 °C) |
| 0.75 % (333 °C … 800 °C) | |
| ThermoSensor Tip | ±2.5 K (-50 °C … 333 °C) |
| ±0.75 % (333 °C … 1200 °C) | |
| Sensor (EN 60584-2) | Replaceable sensor, type K |
| Display | LC display, 3.5 segments, (max. 1999) |
| Power supply | 1x 9 V alkaline battery (NEDA 1604, IEC 6F22) |
| Operating temperature | 0 °C … 50 °C |
| Storage temperature | -20 °C … 60 °C, 10 % … 70 % rH (non-condensating) |
| Dimensions | 162 mm x 76 mm x 38.5 mm |
| Weight (without battery) | 0.21 kg |
EU directives and disposal
This device complies with all necessary standards for the free movement of
goods within the EU.
This product is an electric device and must be collected separately for
disposal according to the European
Directive on waste electrical and electronic equipment.
Further safety and supplementary notices at: www.laserliner.com/info
SERVICE
Umarex GmbH & Co KG
– Laserliner –
Möhnestraße 149, 59755 Arnsberg, Germany
Tel.: +49 2932 638-300, Fax: +49 2932 638-333
laserliner@umarex.de
Umarex GmbH & Co KG
Donnerfeld 2
59757 Arnsberg, Germany
Tel.: +49 2932 638-300, Fax: -333
www.laserliner.com