Labfacility Tempmaster PRO User Manual

High precision digital thermometer / logger for pt100 sensors

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Tempmaster PRO High Precision
Digital Thermometer / Logger
for Pt100 Sensors
User Manual
RoHS
compliant
Certificate No. 4746
www.labfacility.co.uk

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Summary of Contents for Labfacility Tempmaster PRO

  • Page 1 Tempmaster PRO High Precision Digital Thermometer / Logger for Pt100 Sensors User Manual RoHS compliant Certificate No. 4746 www.labfacility.co.uk...
  • Page 2: Table Of Contents

    1. About the Tempmaster PRO........
  • Page 3: About The Tempmaster Pro

    Individual calibrated sensors can have their appropriate calibration values programmed into the Tempmaster PRO using either the keypad or the PC software supplied. The PC software also allows corrections in the form of constants for individual Pt100 sensors to be programmed in.
  • Page 4 A or B or both inputs, the corrections are automatically applied without the need for user intervention. A common application for the Tempmaster PRO is the comparison calibration of “working” sensors against a calibrated reference standard or semi-standard sensor. For example, the sensor under test in channel B is compared against the reference sensor (with programmed corrections) in channel A.
  • Page 5: Installation

    Tempmaster PRO Thermometer Installation The instrument is for bench-top and portable use, folding ‘legs’ can be extended to provide a convenient viewing angle. All connections are made to the rear panel as indicated. Analogue output Pt100 input Pt100 input Flash...
  • Page 6: Communication Interface

    Labfacility D type is recommended. Application note: Inputs are not isolated in the Tempmaster PRO which is primarily designed for laboratory applications and site calibration of industrial temperature sensors. Probes connected to the instrument must therefore be isolated from high voltage pick-up.
  • Page 7: Stand Alone Operation

    Tempmaster PRO Thermometer Operation Ensure that the instrument is connected to a suitable supply and that the required connections are made. Switch on using the ‘POWER’ key.The display will show the programme (software) designation followed by a short delay while the internal checks are carried out.The instrument will then commence normal operation according to the selected mode prior to switch-off, e.g.
  • Page 8 Tempmaster PRO Thermometer Enter Next Next Next Pt100 Corr Coeff Main Menu Corr Chan Chan Correct Escape Enter Next Next Next Next Main Menu View Write Start Erase Logging Escape Enter Next Next Next Next Main Menu Smart System About...
  • Page 9: To Read Sensor Temperature Directly

    Tempmaster PRO Thermometer 3a To read sensor temperature directly Press ‘SENSOR’ key to select the required type of sensor if different to that currently indicated Brief repeated key presses will step through the various types or holding the key depressed will auto-repeat (scroll through); this applies to other functions as well.
  • Page 10: Matching Tempmaster Pro To Calibrated Sensors

    VALUE = 3c Matching Tempmaster PRO to calibrated sensors It is possible to automatically match the Tempmaster PRO to Pt100 sensors with dedicated calibration values via the PC software (see p17). Such values published in associated certificate indicate true Ω, °C and value corresponding to accurately known reference temperatures.
  • Page 11: Smart Probe Operation

    Temperature Measurement with Calibrated Sensor To use the Tempmaster PRO with its associated calibrated sensor, ensure that; 1. The appropriate sensor(s) is/are connected to the relevant input(s) A or B. 2. Select the relevant channel to suit, ensure that the correct sensor type is selected.
  • Page 12: Using Tempmaster Pro To Obtain A Secondary Sensor Calibration

    Probe C (Probe coefficients i.e. in the Probe are applied) Using Tempmaster PRO to obtain a secondary Calibration There are two ways in which a non-calibrated sensor can be converted into a secondary standard using a ‘sensor matched’ Tempmaster PRO.
  • Page 13: On-Board Logging

    Select the required memory slot (1 to 15) and enter the logging parameters. Follow the on-screen prompts. Press ‘ESCAPE’ to exit the logging menu. 3h Error indications The Tempmaster PRO has several modes of error indication according to internal or external problems as follows: DISPLAY...
  • Page 14: Or 4 Wire Recognition (Pt100)

    Tempmaster PRO Thermometer 3i 3 or 4 Wire Recognition (Pt100) The Tempmaster PRO requires a minimum of 80 milliOhms lead resistance (e.g. 1 metre of 7 stranded 0.2mmΩ wire) to recognise a 4 wire probe. Otherwise the instrument will default (perhaps correctly) to 3 wire mode.
  • Page 15: Operation With A Pc

    Operation with a PC 4a Install the Software For use with a PC the software supplied with the Tempmaster PRO must be installed on the PC and communication established (on-line green indicator showing) via the USB lead supplied. System requirements for installing the software:Windows XP with at least one USB port.
  • Page 16: Sensor Selection

    Tempmaster PRO Thermometer 4c Sensor Selection In the ‘Main’ window, the sensors currently selected for channel A and B are indicated in the relevant boxes.Alternative sensor types for each channel can be selected by clicking the drop down arrow to the right of the indicated sensor and clicking on the desired type.
  • Page 17: Input Channel

    Tempmaster PRO Thermometer 4e Input Channel Select A or B from the ‘INPUT’ box in the top centre of the control panel; the measured value is displayed below in the ‘MEASURED VALUE’ box when ‘MEASURE NOW’ button is clicked. 4f Units and Resolution These are selected via the appropriate boxes in the ‘Control Panel’.
  • Page 18: Custom Coefficients

    Tempmaster PRO Thermometer iii) Click on ‘INITIALISE’ to clear any existing values. iv) Enter up to ten values of engineering units corresponding to the temperature as stated on the calibration certificate for the ‘reference’ probe and click ‘SEND’; this sends to table of values to the instrument.
  • Page 19: Smart Probe

    Tempmaster PRO Thermometer 4i SMART Probe Click on the ‘Probe ‘ tab to view the SMART probe window.This window is very similar to the one in the ‘ Tables’ tab and the values stored in the probe can be read, entered or edited.
  • Page 20: Memory

    Tempmaster PRO Thermometer 4k Memory In this tab, readings stored on board the instrument can be retrieved and saved to file (normally in the same folder which contains the PC software). Click ‘READ’ to read the values. Click ‘SAVE’ to save the readings to file.
  • Page 21: Instrument Re-Calibration

    Tempmaster PRO Thermometer Instrument Re-Calibration It is recommended that this procedure is carried out by Labfacility or by an accredited laboratory facility. Calibration must only be performed by an authorised person and in the laboratory with a steady ambient temperature; access to the calibration level of the software is via a 5 digit ‘engineer’...
  • Page 22 Tempmaster PRO Thermometer Connect a 100 Ohm resistance to the PRT-A input port.The instrument displays the value of the 100 Ohm input according to its previous calibration.The instrument now measures the precise resistance and displays the value. Press ‘ENTER’ and the value is sampled and entered.
  • Page 23: Specifications

    Tempmaster PRO Thermometer Specifications General Inputs/Ranges/Sensors Type Pt100 to IEC 751 (ITS 90 refers). -200ºC to +850ºC Ro = 100Ω 3 or 4 wire connection with automatic recognition (with manual override) Overall Accuracy ± 0.01ºC ± 0.0005% of span Linearisation Conformity Better than ±...
  • Page 24 Tempmaster PRO Thermometer Series Mode Rejection 60dB @ 50Hz (50mV RMS applied) Common Mode Rejection 30V RMS applied between input and earth produces no measurable effect. Display 128 x 64 pixel character OLED screen with diffused backlighting. Wide viewing angle, high contrast (adjustable).
  • Page 25 Tempmaster PRO Thermometer Assessories and Order Codes Tempmaster PRO is supplied complete with switch mode power supply (90-260V, 50/60Hz), two Pt100 “D” connectors, operating manual and PC software. Precision Pt100 Probes Stainless steel probes, 6mm diameter with 2m screened PTFE lead Pt100 Probes and...
  • Page 26 Units 5,6 & 7, Block K, Southern Cross Industrial Estate, Shripney Road, Bognor Regis, West Sussex PO22 9SE Export Sales: tel: +44(0)1243 871287 fax: +44(0)1243 871281 email: exportsales@labfacility.co.uk Southern UK Sales: tel: +44(0)1243 871280 fax: +44(0)1243 871281 email: southernsales@labfacility.co.uk NORTHERN UK DIVISION:...

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