Tempmaster PRO High Precision Digital Thermometer / Logger for Pt100 Sensors User Manual RoHS compliant Certificate No.
Tempmaster PRO Thermometer Contents 1. About the Tempmaster PRO. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2. Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 a. Supply Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 b. Communication Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Tempmaster PRO Thermometer 1. About the Tempmaster PRO The Tempmaster PRO is a successor to the very successful Tempmaster-100 thermometer developed over a 25 year period. Like its predecessor, the Tempmaster PRO provides laboratory standard temperature measurement with Pt100 sensors and greater versatility to extend the scope of applications. Displayed values and user information are indicated on a bright clear OLED screen with diffused backlighting.
Tempmaster PRO Thermometer For the Pt100 inputs,SMART probes can be used which incorporate dedicated ‘correction values‘ within the connector of each probe.When a SMART probe is connected to input 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.
Tempmaster PRO Thermometer 2. 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 Channel A Pt100 input Channel B Supply Connection USB Flash Drive Communications 2a Supply Connection Refer to the rear panel illustration.
Tempmaster PRO Thermometer 2b Communications Interface Connect the USB cable supplied between the instrument and the PC. Refer to the rear panel illustration. 2c Input Connection – Sensors Refer to the rear panel illustration. Pt100 sensors PRT - A PRT - B Platinum resistance thermometers must be fitted with a high quality D-plug and connected to input PRT-A and/or PRT-B as required. A 3 or 4 wire configuration can be used but they are connected differently as shown.
Tempmaster PRO Thermometer 3. 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 (firmware) 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. if channel B, PRT was in use when switched off, this will be the mode when switched on.
Tempmaster PRO Thermometer Main Menu Correct Main Menu Logging Enter Escape Enter Escape Main Menu Settings Enter Escape Main Menu Brightness Enter Escape Main Menu D>A Setup Enter Pt100 Corr Next Corr Chan Next Coeff Chan Next View Log Next Write Log Next Start Log Next Smart Probe Next Next Set Time Next System Set Bright D>A Zero Next D>A Span Next Next New Null Next Escape Main Menu A–B Null Enter Escape Next 8 Use Null ENTER to toggle on or off ENTER to edit t
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. NOTE: If for any selected channel the sensor is either not connected (including sensor open circuit) the display will show ‘BROKEN PROBE’.
Tempmaster PRO Thermometer Obtain the ‘NULL’ menu A-B Null by scrolling through the sub-menus until the menu appears. Press ‘ENTER’. The display screen shows: =USE NULL ON/OFF & VALUE= i) Acquiring a new null ii) Applying a measured null value The last null value will be applied such that the display value used is (A-B) – (Null value).
Tempmaster PRO Thermometer 3d SMART probe operation In the main menu, scroll down to ‘SETTINGS’ and press ‘ENTER’.The smart probe screen is shown. Press ‘ENTER’ to view the Smart Probe data (table of values). The probe tag and values are displayed when an appropriate probe is connected to the instrument. For custom coefficients In the correction menu, scroll down to ‘COEFF’ screens and follow the prompts to view values and to specify relevant channel (ie A / B / Both / off). Press ENTER to select.
Tempmaster PRO Thermometer Press ‘ENTER” to select. Press ‘ESCAPE’ to return to the main display which will confirm the corrections status (CORRECT OFF OR CORRECTED). There are eight annunciations to indicate the status of corrections when taking readings with the Tempmaster PRO: Display screen annunciation 1) OFF 2) N/A 3) OUTSIDE 4) 5) 6) 7) 8) 3f No Pts Local T Local C Probe T Probe C Status (i.e.
Tempmaster PRO Thermometer 3g On-Board Logging Select ‘LOGGING’ in the MENU. Press ‘ENTER’ to view, write, start, erase log. Logged readings can be saved to file or to Flash Drive. 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.
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. If simulating a sensor input or calibrating the instrument, ensure 80mΩ lead resistance between the resistance source and D plug (e.g. 1 metre of 7 x 0.2mm Copper Cable).
Tempmaster PRO Thermometer 4. 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. All Windows operating systems prior to XP do not support USB natively and are not recommended.
Tempmaster PRO Thermometer 4c Sensor Indication In the ‘Main’ window, the sensors for channel A and B are indicated in the relevant boxes. 4d Settings Click on the ‘SETTINGS’ tab for port selection if required. In many cases this may not be required since communications may be established automatically. If not, simply click on the appropriate port.
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’.
Tempmaster PRO Thermometer iii) Enter up to ten values of engineering units with 3 decimal places (e.g. 100.100Ohms & 0.000°C) 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. Existing values will be overwritten. iv) Stored ‘correction’ values can be switched ON or OFF as required in the ‘Main’ window. v) Clicking ‘READ’ displays stored values (may be rounded up or down).
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. The probe Serial No. is shown and can be modified to suit. Click SAVE to save the values to the probe as required. 4j Log This tab is used to control PC logging of measured values (i.e. readings are saved to file on the PC and not on-board the instrument).
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). i) Click ‘READ’ to read the values. ii) Click ‘SAVE’ to save the readings to file. iii) Click ‘PRINT’ to print the readings. 5. Analogue (D to A) re-transmission output In the main menu, scroll down to D>A Setup and press ‘ENTER’. Follow the on-screen prompts to set up zero and span (degrees C) values.
Tempmaster PRO Thermometer 6. 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’ code; this must be entered at the prompt by pressing ‘INC/DEC’ sequentially for the first digit.Then press ‘UNITS’ to move to the next digit.
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. Press ‘ESCAPE’ if calibration of the channel is not required. a) The display screen now shows; CALIBRATION CH A PRT 100 OHMS Connect a 250 Ohm resistance to the PRT-A port.
Tempmaster PRO Thermometer 7. Firmware update 1. Make a copy of the updated firmware file( e.g VI – 2 release.lab) to a folder 2. Rename the copied file “FIRMWARE.LAB” and send it to a flash memory stick. Ensure that the memory stick used is a “single volume” flash memory (i.e without additional volume such as a virtual CD or any additional files). 3.
Tempmaster PRO Thermometer 8. 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 ± 0.01ºC Stability (vs ambient temperature) Better than 0.0025ºC per 1ºC ambient change Warm-up Negligible under normal ambient conditions.
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). Front Panel Controls 9 membrane push-keys to control all instrument functions Mechanical/Case Metal bench top case / adjustable tilt Dimensions Overall 190mm(W) x 70mm(H) x 250mm(D) Weight 3.0kg approx.
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 connector LP - L250: 250mm long, maximum 250ºC LP - H450: 350mm long, maximum 450ºC UKAS Calibration LP - UKAS: UKAS calibration for instrument alone. LP - SYS.
Certificate No. 4746 Data ref: 050110/OM/A v1.
