MENU
UK
  • EN
  • FR
  • ES
Search
Tel: +441732355993

7068 RTD Temperature Calibrator Module

  • The 7068 is a process control module that combines a precision digital thermometer (using RTD probes) with an RTD/ohms calibrator.
    Easy to use, it solves the problem of making high accuracy temperature measurements without using bulky mains powered instrumentation.
    It can also be used as an external temperature reference for dry block and other precision temperature baths.

    Modes of Operation

    Monitor Mode (4 wire):
    Typical Functions

    1. Check RTD probes by measuring their resistance at known temperatures. 

    2. Measure resistance values.

    3. Indicate temperature when connected to an RTD probe.

    4. Can be pre-programmed with a particular RTD’s characteristics to allow very high accuracy.

    The 7068 may be used with a calibrated and certified probe to produce a highly accurate thermometer. The performance can be further enhanced by programming the actual characteristic of the probe into the unit.

    Simulator Mode (4 wire):
    Typical Functions

    1. Output resistance of precise known value. 

    2. Simulate an RTD value from an RTD table chart.

    3. Simulate an RTD value using the internal table.

    Enhanced performance may be achieved by programming the unit to simulate the characteristic of a particular probe.

    Five fixed step points (0, 25, 50, 75, 100%) are available between a user set minimum (0%) and a maximum (100%). Programmable ramp function is also available.

  • Modes of Operation - Detailed Specifications

    Monitor Mode (4 wire)

    Typical Functions

    1. Check RTD probes by measuring their resistance at known temperatures.
    2. Measure resistance values.

    3. Indicate temperature when connected to an RTD probe.

    4. Can be pre-programmed with a particular RTD’s characteristics to allow very high accuracy.

    Excitation current 1mA on all ranges
    Resistance range 0.01Ω to 2.6kΩ
    Resolution 0.01Ω
    Accuracy See specifications below
    Auto re-calibration Every 0.6 secs
    Temperature stability Better than 0.0015% per °C
    Max/Min values Logged automatically

    The 7068 may be used with a calibrated and certified probe to produce a highly accurate thermometer.
    The performance can be further enhanced by programming the actual characteristic of the probe into the unit.

    Simulator Mode (4 wire)

    Typical Functions

    1. Output resistance of precise known value.

    2. Simulate an RTD value from an RTD table chart.

    3. Simulate an RTD value using the internal table.

    Excitation current 0.6mA to 1mA
    Resistance range 0.01Ω to 2.6kΩ
    Resolution 0.01Ω
    Accuracy See specifications below
    Auto re-calibration Every 0.6 secs.
    Temperature stability Better than 0.0015% per °C

    Enhanced performance may be achieved by programming the unit to simulate the characteristic of a particular probe.
    Five fixed step points (0, 25, 50, 75, 100%) are available between a user set minimum (0%) and a maximum (100%).
    Programmable ramp function is also available.


    Technical Specifications

    Standard RTD types (Non standard RTD types user programmable)
    Element Alpha Coefficient Temp Range °C Accuracy °C Temp Range °F Accuracy °F

    Pt100 DIN

    0.003850

    -200 to 250
    250 to 849

    0.05
    0.07

    -330 to 480
    480 to 1560

    0.10
    0.14

    Pt100 US

    0.003916

    -100 to 250

    250 to 457

    0.05

    0.07

    -150 to 480

    480 to 850

    0.10

    0.14

    Pt200 DIN 0.003850 -200 to 300 0.05 -330 to 570 0.10

    Pt500 DIN

    0.003850

    -200 to 250

    250 to 630

    0.05

    0.07

    -330 to 480

    480 to 1160

    0.10

    0.14

    Pt1000 DIN

    0.003850

    -200 to 250

    250 to 630

    0.05

    0.07

    -330 to 480

    480 to 1160

    0.10

    0.14

    Ni 120 0.006180 -100 to 200 0.05 -150 to 390 0.10
    Ni 1000 0.006180 -100 to 200 0.05 -150 to 390 0.10
    Resistance Accuracy
    Range (Ohms) Monitor Generator
    20 to 400 0.03Ω 0.03Ω
    400 to 800 0.10Ω 0.10Ω
    800 to 1200 0.20Ω 0.20Ω
    1200 to 2600 0.50Ω 0.50Ω*

    * plus additional error of 0.05% of output value. If excitation current is less than 1mA.


    General Specifications

    Module Width 107mm (primary or secondary console fitting)
    Optional Extras Calibration certificates traceable to NPL and UKAS
  • Module

    7068

    RTD Temperature Calibrator Module

    Options
    C183 Factory Calibration Certificate (NPL traceable)
    C194 UKAS Calibration Certificate (ISO 17025)
  • PDF Downloads
    File name File Size Language

    7068 Data Sheet

    429kB

    EN

    CalBench Brochure

    8.4MB (Low resolution)

    EN

    CalBench Brochure

    20MB (Higher resolution)

    EN