ChartScan User’s Manual
Calibration 6-17
Cold Junction Calibration
Required Equipment
Equipment for CJC Calibration
Cold (ice) cell for calibration with thermocouples at 0°C
T/C wire and subminiature plug connectors (T-Type T/C wire is recommended)
U-Type copper shorting plugs
Thermocouples
Equipment for Verification of Calibrated Temperature
*
Option (a): Cold Cell Method
Cold (ice) cell
Volts DC Calibrator
Digital Voltmeter or Digital Multimeter
2-22 Twisted-pairs
Voltage-to-temperature reference tables
Thermocouples
T/C wire and subminiature plug connectors (T-Type T/C wire is recommended)
Option (b): Hot Cell Method
Hot Cell
Thermocouple
T/C wire and subminiature plug connector (T-Type T/C wire is recommended)
Option (c): T/C Calibrator/Simulator Method
Using a T/C Calibrator/Simulator is not recommended due to possible transient effects which can cause erroneous readings.
T/C Calibrator
Thermocouple
T/C wire and subminiature plug connector (T-Type T/C wire is recommended)
*
see required specifications on page 6-2
Note:
See figures,
Cold Junction Calibration, Equipment Setup
and
Verification of Calibrated Temperatures
.
The cold junction calibration applies only to thermocouple cards (CSN14/TC/P). The figure on the next
page,
Cold Junction Calibration, Equipment Setup
represents the setup for a T/C card in slot #1. In this
example channels 3, 6, 11, and 14 must be used for the cold junction calibration. The following table
indicates channel numbers applicable to the T/C card in each of the eight possible card slots.
CAUTION
CAUTION
CAUTION
CAUTION
Use approved ESD precautions, including static-free work area and grounded wrist strap,
when handling circuit boards and electronic components. Failure to do so could cause
equipment damage due to electrostatic discharge.
Note:
The Cold Cell Simulator in the following figure shows a special connection box attached to it. This
connection box, which can be easily made, is not part of the cold cell device.
Cold Junction Channel Numbers
Unit
Slot #
Required CJC Channels
Main Chassis
1 (bottom slot)
3, 6, 11, 14
2
19, 22, 27, 30
3
35, 38, 43, 46
4
51, 54, 59, 62
Expansion Chassis (Option)
5
67, 70, 75, 78
6
83, 86, 91, 94
7
99, 102, 107, 110
8 (top slot)
115, 118, 123, 126
Содержание OMB-CHARTSCAN 1400
Страница 1: ...August 2002 OMB CHARTSCAN 1400 Portable Data Recorder p n OMB 483 0901 Rev 3 1...
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Страница 117: ...ChartScan User s Manual Calibration 6 13 1 Connect an applicable calibration harness to each card Refer to figure below...
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Страница 136: ...API Commands Appendix A A 10 ChartScan User s Manual Notes...
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Страница 230: ...Appendix C Registers Data Formats Queries ChartScan User s Manual C 13...
Страница 237: ...Registers Data Formats Queries Appendix C C 20 ChartScan User s Manual Notes...
Страница 257: ...E 2 ChartScan User s Manual Notes...
Страница 265: ...ASCII Code Summary Appendix F F 8 ChartScan User s Manual Notes...
Страница 269: ...Abbreviations Appendix H H 2 ChartScan User s Manual Notes...
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