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Installation
2-17
January 2006
Model 1311DR Sensor
The 1311DR is a stainless steel, liquid cooled, four-stage sensor
suitable for measuring dew points between –75°C and +25°C.
Mount the 1311DR sensor so that the air inlet and exhaust openings
are free from obstruction (see Figure 2-17 below). If the sensor is
liquid cooled, vertical wall mounting is recommended, observing the
“UP” arrow on the case. This ensures that condensation forming on
cold portions of the 1311DR will drain from the enclosure.
At room temperatures (25°C) with air cooling, dew points from
–65°C to +25°C can be measured. When operating it without liquid
cooling, switch on the built-in fan. For lower frost point
measurements, a chilled-water coolant loop can be used for cooling.
Make sure the fan switch is off when using liquid cooling.
Sample flow rates from 0.5 to 5 standard cubic feet per hour
(0.25 to 2.5 liters per minute) should be used.
Caution!
If it can be avoided, do not operate the sensor
continuously at or near full depression. Doing so may
decrease the life of the thermoelectric heat pump.
Liquid cooling is required for measuring frost points below –65°C
(at 25°C ambient), and may be used to create faster response at higher
dew point temperatures. If a recirculating chiller is used, it should
have a capacity of at least 300 watts at the coolant temperature.
Switch the internal fan ON if air cooling is used; leave it OFF for
liquid cooling.
Install the gas sampling lines according to the instructions listed in
the section
Sampling Lines
on page 2-13.
Figure 2-17: Model 1311DR Sensor
Содержание Optica
Страница 1: ...GE Sensing Optica General Eastern Dew Point Analyzer Operator s Manual ...
Страница 11: ...Chapter 1 ...
Страница 20: ...Chapter 2 ...
Страница 43: ...Chapter 3 ...
Страница 58: ...Chapter 4 ...
Страница 80: ...Chapter 5 ...
Страница 81: ...Programming the 4x40 Optica Introduction 5 1 Programming Technique 5 2 Programmable Functions 5 4 ...
Страница 94: ...Chapter 6 ...
Страница 95: ...Network Based Programming Introduction 6 1 Programming Screens 6 1 ...
Страница 99: ...Chapter 7 ...
Страница 109: ...Appendix A ...
Страница 114: ...Appendix B ...
Страница 115: ...Humidity Equations and Conversion Chart Introduction B 1 Vapor Pressure B 1 Humidity B 2 ...
Страница 118: ...Humidity Equations and Conversion Chart B 3 January 2006 Figure B 1 Graphical Humidity Conversion Chart ...
Страница 119: ...Appendix C ...
Страница 120: ...Configuring the Serial Interface Wiring to a Personal Computer C 1 ...
Страница 122: ...Appendix D ...
Страница 123: ...Chilled Mirror Sensors Introduction D 1 Depression D 1 Measurement Range D 2 Comparing Optica Models D 3 ...
Страница 127: ...Appendix E ...
Страница 128: ...Glossary ...
Страница 130: ...Appendix F ...
Страница 133: ...Appendix G ...
Страница 134: ...Communicating with the OPTICA Using Ethernet Direct Communication G 1 Computer Communication G 1 ...