Omega DP24-T User Manual
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Omega DP24-T User Manual

Thermocouple meter
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User' s Guide
RoHS 2 Compliant
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e-mail: info@omega.com
DP24-T
Thermocouple Meter

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Summary of Contents for Omega DP24-T

  • Page 1 User’ s Guide RoHS 2 Compliant Shop on line at ® ® www.omega.com e-mail: info@omega.com DP24-T Thermocouple Meter...
  • Page 2 OMEGA will add the mark to every appropriate device upon certification. The information contained in this document is believed to be correct but OMEGA Engineering, Inc. accepts no liability for any errors it contains, and reserves the right to alter specifications without notice.

  • Page 3: Table Of Contents

    Table of Contents Section Page SETUP ........1 1.1.1 Customer Service .
  • Page 4 List of Figures Figure Page Panel Cut-out Dimensions ....5 Thermocouple Input Connection ..7 Connectors (ac-powered) ....21 Connectors (dc-powered) .

  • Page 5: Setup

    ETUP 1.1 Before You Begin If you need assistance, please contact the 1.1.1 Customer Service Department nearest Customer you. Service Remove the packing slip and verify that 1.1.2 you have received everything listed, Inspecting including: Your Indicator/controller with all applicable Shipment connectors attached Owner’s Manual...

  • Page 6: What You Will Need

    ETUP Inspect the container and equipment for signs of damage as soon as you receive Warning! the shipment. Note any evidence of rough handling in transit. Immediately report any damage to the shipping agent. The carrier will not honor damage claims unless all shipping material is saved for inspection.

  • Page 7: Basic Features

    ETUP 1.2 Features and Options Your meter has several basic features, 1.2.1 Basic some of which are listed below. For more Features detailed information on specifications and factory defaults, see Part 3: Defaults & Specifications. 4 digit, 7 segment LED display with programmable decimal point Nonvolatile memory —...

  • Page 8: Safety Considerations

    ETUP 1.3 Safety Considerations The unit is protected in accordance with Class II of IEC 348 and VDE 0411. Remember that the unit has no power-on switch. It will be in operation as soon as you connect it to a power source. Do not expose the unit to rain or moisture.

  • Page 9: Getting Started

    ETUP 1.4 Getting Started Follow these steps to start using your unit right away: Overview Mount the unit Connect Sensor Input Connect the AC power cord Turn on the unit 1. Remove the two nuts at the back of 1.4.1 the unit, which hold the mounting Mount the sleeve.
  • Page 10 ETUP 3. Insert the unit into the hole. Be sure the front bezel is flush to your panel. Slide on the mounting sleeve from the rear of the panel and tighten the unit until snug, using the two nuts. Panel Cutout...

  • Page 11: Connect Sensor Input

    ETUP 1.4.2 Connect Sensor Input Figure 1.2 — Thermocouple Input Connection...

  • Page 12: Connect The Ac Power Cord

    ETUP 1.4.3 Connect the 1. Locate the connector pins. (see Figure 3.1) AC Power Cord Do not connect AC power to your unit until all input and output connections have been Warning! properly established. Failure to do so may result in injury. 2.

  • Page 13: Turn On The Unit

    ETUP 1. Plug the unit into a properly grounded 1.4.4 Turn 115V power supply. The unit will On the Unit initialize, scrolling the following three messages on the front panel: code r 0I (r 0I equals the revision code of the micro controller.

  • Page 14: Operation

    PERATION 2.1 Introduction The unit has two different modes of operation. The first, Run Mode, is used to display process value and display or clear peak and valley values. The other mode, Configuration Mode, is used to navigate through the menus options and configure the meter.

  • Page 15: Meter Buttons

    PERATION 2.2 Meter Buttons Button Description RESET Reset the peak and valley values MENU Enter Configuration (Menu) mode /MIN Display the valley value (flashing) /MAX Display the peak value (flashing) Toggle display between °C and °F Table 2.1 — Button Functions...

  • Page 16: Display Descriptions

    PERATION 2.3 Display Descriptions Display Message Description nnnn Peak value to follow uuuu Valley value to follow Open thermocouple input Peak/Valley Reset Table 2.2 — Display Descriptions 2.4 Menu Configurations 2.4.1 Selecting the Input TYPE Thermocouple Type The unit is designed to handle up to eight different thermocouple types.
  • Page 17 PERATION 2. Press the /MIN button. You may scroll through the following choices: Displayed as: d inj DIN J 2. Press the /MIN button to scroll through available choices 3. Press the MENU button to store and activate your selection. 2.4.2 Selecting the Decimal Point dEcp The unit can display temperatures in 1°...
  • Page 18 PERATION 2. After a moment the display will indicate the currently selected decimal point (resolution) configuration. 3. AUTO will be displaced if the meter is configured to display any temperature between -100° and 1000° with 0.1 resolution (meter will switch to 1° resolution above and below these temperatures automatically.) 4.
  • Page 19 PERATION 2.4.3 Meter Cold-Junction Offset Calibration procedure This menu item will allow you to adjust the cold junction offset calibration. 1. Press MENU until meter flashes: C. J . Z (cold junction zero) 2. Connect the proper thermocouple to the input at J4 and using a thermocouple calibrator apply 0.0°C.
  • Page 20 PERATION This automatic cold junction calibration should be all that is necessary to calibrate the CJ offset, however if you want to additionally adjust the offset manually, the /MAX and /MIN buttons at this point can be used to manually increase ( /MAX) or decrease ( /MIN) the display 0.1°...
  • Page 21 PERATION 2.4.4 Line Frequency Selection LINE This item will only be available if the S4 jumper, which enables the calibration configuration, is installed! This menu item will allow you to select the local line frequency used by the meter. 1. Press MENU until display displays: LINE 2.
  • Page 22 PERATION 2.4.5 Calibration Menu Caution: It is not necessary to calibrate a brand new meter, it arrives completely calibrated. Accessing the calibration menu will affect the meter’s calibration and should only be performed by qualified personnel with accurate test equipment. 2.4.5.1 Meter SPAN calibration procedure This item will only be available if the S4...
  • Page 23 PERATION This menu item will allow you to adjust the SPAN calibration used by the meter. 1. Press MENU until meter flashes: Press /MIN button. Meter will now display: SP. C (Span Calibration) Press /MAX button. Meter will display: 4. Apply 0 mV to input terminals 1 and 2 of J4.
  • Page 24 PERATION 5. Apply 75 mV to input terminals at J4. Let meter stabilize for 10 seconds then press MIN to accept. Meter will display: (40 mV zero reading) 6. Apply 0 mV to input terminals at J4. Let meter stabilize for 10 seconds then press MIN to accept.

  • Page 25: Defaults & Specifications

    & S EFAULTS PECIFICATIONS 3.1 Back of the Meter Figures 3.1 and 3.2 show the connectors on the back of the meter for ac and dc models respectively. Table 3.1 gives a brief description of each connector at the back of the meter. MAIN BOARD AC GND AC LO...
  • Page 26 & S EFAULTS PECIFICATIONS MAIN BOARD Figure 3.2 — Connectors (dc-powered)
  • Page 27 & S EFAULTS PECIFICATIONS Connector Description J1-1 AC high connection (NC on DC-powered units) J1-2 AC low connection (+ input on DC-powered units) J1-3 AC ground (DC-power return on DC-powered units) J2-1 Display hold input (active low) — connect to J2-2 to hold meter reading.

  • Page 28: Main Board Ac Power Jumpers

    & S EFAULTS PECIFICATIONS 3.2 Main Board AC Power Jumpers To check voltage jumpers, or to change from 115 V to 230 Vac: 1. Disconnect the AC power from the meter. Remove the front lens, if present. 3. Pull the meter forward, out of its case.

  • Page 29: 115Vac Jumpers (Default)

    & S EFAULTS PECIFICATIONS DISPLAY JUMPER 115VAC MAIN BOARD AC GND Figure 3.3 — 115Vac Jumpers (Default) DISPLAY JUMPER 230VAC MAIN BOARD Figure 3.4 — 230Vac Jumpers...

  • Page 30: S51,-S4 Jumpers

    & S EFAULTS PECIFICATIONS 3.3 S51, S4 Jumpers The S51 Jumpers is at the front of the meter near the digital display. The S4 Jumpers is on the side of the main board (see Figure 3.5). (Defaults are in bold and italic.) Disconnect the main power from the meter.
  • Page 31 & S EFAULTS PECIFICATIONS Figure 3.5 — S51,–S4 Jumpers...

  • Page 32: Specifications

    & S EFAULTS PECIFICATIONS 3.4 Specifications 3.4.1 General Specifications Microprocessor based Input type: Type J, DINJ, K, T, E, N, R, S Max Error: ± 1 deg C (± 1.8 °F) Accuracy at 25°C: ± .5 deg C (± .8°C for DINJ) Cold-junction compensation tempco 0.07°C/°C...
  • Page 33 & S EFAULTS PECIFICATIONS 3.4.4 Resolution 0.1° or 1° resolution dEc. P = AUTO ( ( f f a a c c t t o o r r y y d d e e f f a a u u l l t t ) ) 1°...

  • Page 34: Meter Dimensions

    & S EFAULTS PECIFICATIONS 3.4.8 Meter Dimensions 48.00(1.890) 96.00 (3.780) 0.73 (18.67) 3.22 (81.7) 3.74 (95.0) SIDE VIEW TOP VIEW PANEL THICKNESS: 6,4 (.25) MAX 0,8 (.03) MIN 45,01 +0,61/-0,00 (.06) (1.772 +.024/-.000) 4 PLCS 92,00 +0,81/-0,00 (3.622 +.032/-.000) PANEL CUTOUT Figure 3.6 —...

  • Page 35: Information

    NFORMATION This product conforms to the EMC directive 89/336/EEC amended by 93/68/EEC, and with the European Low Voltage Directive 72/23/EEC. Electrical Safety EN61010-1:2001 Safety requirements for electrical equipment for measurement, control and laboratory. • Double Insulation: Primary to Secondaries • Pollution Degree 2 •...
  • Page 36 Department will issue an Authorized Return (AR) number immediately upon phone or written request. Upon examination by OMEGA, if the unit is found to be defective it will be repaired or replaced at no charge. OMEGA’s WARRANTY does not apply to defects resulting from any action of the purchaser, includ- ing but not limited to mishandling, improper interfacing, operation outside of design limits, improper repair, or unauthorized modification.
  • Page 37 Where Do I Find Everything I Need for Process Measurement and Control? OMEGA…Of Course! Shop on line at www.omega.com TEMPERATURE Thermocouple, RTD & Thermistor Probes, Connectors, Panels & Assemblies Wire: Thermocouple, RTD & Thermistor Calibrators & Ice Point References Recorders, Controllers & Process Monitors...

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