Ge TMO2D-TC User Manual

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May 2003

Process Control Instruments

Model TMO2D-TC Thermal Conductivity Analyzer

User’s Manual 910-146A2

May 2003

TMO2-TC Thermal Conductivity Transmitter with TMO2D

iii

May 2003

Warranty Each instrument manufactured by GE Panametrics is warranted to be

free from defects in material and workmanship. Liability under this warranty is limited to restoring the instrument to normal operation or replacing the instrument, at the sole discretion of GE Panametrics. Fuses and batteries are specifically excluded from any liability. This warranty is effective from the date of delivery to the original purchaser. If GE Panametrics determines that the equipment was defective, the warranty period is:

• one year for general electronic failures of the instrument

• one year for mechanical failures of the transducers

If GE Panametrics determines that the equipment was damaged by misuse, improper installation, the use of unauthorized replacement parts, or operating conditions outside the guidelines specified by GE Panametrics, the repairs are not covered under this warranty.

The warranties set forth herein are exclusive and are in lieu of all other warranties whether statutory, express or implied (including warranties or merchantability and fitness for a particular purpose, and warranties arising from course of dealing or usage or trade).

Return Policy If a GE Panametrics instrument malfunctions within the warranty period,

the following procedure must be completed:

1. Notify GE Panametrics, giving full details of the problem, and

provide the model number and serial number of the instrument. If the nature of the problem indicates the need for factory service, GE Panametrics will issue a RETURN AUTHORIZATION NUMBER (RAN), and shipping instructions for the return of the instrument to a service center will be provided.

2. If GE Panametrics instructs you to send your instrument to a service

center, it must be shipped prepaid to the authorized repair station indicated in the shipping instructions.

3. Upon receipt, GE Panametrics will evaluate the instrument to

determine the cause of the malfunction.

Then, one of the following courses of action will then be taken:

• If the damage is covered under the terms of the warranty, the

instrument will be repaired at no cost to the owner and returned.

• If GE Panametrics determines that the damage is not covered under

the terms of the warranty, or if the warranty has expired, an estimate for the cost of the repairs at standard rates will be provided. Upon receipt of the owner’s approval to proceed, the instrument will be repaired and returned.

May 2003

Table of Contents

Chapter 1: Features and Capabilities

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-1

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-1

Theory of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-3

System Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-5

TMO2-TC Transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-5

Sample System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-9

TMO2D-TC Display. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-9

Extra Cable (optional). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-9

Typical Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-10

Chapter 2: Installation

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-1

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-2

Mounting the TMO2-TC Transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-2

Mounting the Sample System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-3

Manual, 2-Port (Sealed Reference Gas) Sample System . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-3

Manual, 4-Port (Flowing Reference Gas) Sample System . . . . . . . . . . . . . . . . . . . . . . . . . . .2-4

Automatic, 2-Port (Sealed Reference Gas) Sample System . . . . . . . . . . . . . . . . . . . . . . . . . .2-5

Mounting the TMO2D-TC Display. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-6

Wiring the TMO2-TC Transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-7

Wiring the TMO2D-TC Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-12

Chapter 3: Operation

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-1

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-1

Powering Up the TMO2D-TC Analyzer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-1

Establishing a Flow of Sample Gas. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-2

Operating the TMO2D-TC Display. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-3

LCD Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-3

Keypad . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-3

Chapter 4: Programming

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-1

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-2

Key Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-3

Entering Programming Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-5

Menu Navigation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-5

The Main Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-6

The Setup Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-6

The Recorders Menu. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-13

The Alarms Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-15

The Tests Menu. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-16

The Calibration Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-19

May 2003

Table of Contents (cont.)

Chapter 5: Calibration

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1

Required Equipment and Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3

Preparing the Transmitter for Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4

2-Port (Sealed Reference Gas) Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-6

4-Port (Flowing Reference Gas) Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-8

Checking/Changing Switch and Jumper Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-9

Chapter 6: Specifications

TMO2-TC Transmitter Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1

Performance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1

Functional . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2

Physical . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2

Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2

TMO2D-TC Display Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-3

Performance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-3

Functional . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-3

Physical . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-4

Chapter 7: Ordering Information

Appendix A: Relative Thermal Conductivity of Common Gases

Appendix B: Applications

H2 in N2 in Heat Treat Furnace Atmospheres. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-1

Problem . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-1

Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-1

Basic Operating Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-2

Permanent Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-4

Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-4

Detailed Operating Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-4

H2 Purity in H2 Electricity Generator Cooling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-7

Problem . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-7

Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-7

Basic Operating Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-8

How Previously Handled. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-10

Permanent Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-10

Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-10

Detailed Operating Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-10

May 2003

Table of Contents (cont.)

Appendix C: Installation and Maintenance Drawings

Appendix D: Menu Flow Diagrams

Appendix E: Special Programming

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E-1

Entering the Hidden Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E-1

Select Gas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E-2

LabCal Recorders . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E-3

Manual Offset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E-4

Erase RAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E-5

Appendix F: Calibration Procedure and Adjustment Locations for Older Versions

Calibration Procedure for PCB #703-1036 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .F-1

2-Port (Sealed Reference Gas) Calibration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .F-1

4-Port (Flowing Reference Gas) Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .F-4

Checking/Changing Switch and Jumper Settings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .F-6

Calibration Procedure for PCB #703-867 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .F-7

2-Port (Sealed Reference Gas) Calibration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .F-7

4-Port (Flowing Reference Gas) Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .F-9

Appendix G: Sample TMO2D-TC Calibration Sheet

Appendix H: Installation Instructions for CE Mark Compliance

Installation Instructions for CE Mark Compliance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . H-1

vii

Chapter 1

Features and Capabilities

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-1

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-1

Theory of Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

System Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-5

Typical Applications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-10

May 2003

Overview This chapter will introduce you to the features and capabilities of the

GE Panametrics TMO2D-TC Thermal Conductivity Analyzer. You will find the following topics discussed:

• Introduction — A discussion of the TMO2D-TC Analyzer features

and capabilities.

• Theory of Operation — Details on TMO2-TC Transmitter

construction and how the measurement is made.

• System Description — A detailed description of the basic

TMO2D-TC Analyzer and available options, and sample systems.

• Typical Applications — A brief discussion of industries and

applications where the TMO2D-TC can be used, along with two common applications and the required TMO2D-TC configurations.

TMO2D-TC technical specifications can be found in Chapter 6,

Specifications. Ordering information can be found in Chapter 7, Ordering Information.

Introduction The GE Panametrics TMO2D-TC is an analyzer that measures the

thermal conductivity of a binary (or pseudo-binary) gas mixture, determines and displays the concentration of one of the gases in the mixture, and also provides 0/4-20 mA and RS232C outputs and alarm relays for process control requirements. The TMO2D-TC consists of two main components — the TMO2-TC Transmitter and the TMO2D-TC Display.

The TMO2-TC Transmitter offers several unique design features:

• Ultra-stable thermistors and a temperature-controlled measuring

cell (55 span stability, as well as insensitivity to ambient temperature variations.

C standard, or 70 oC optional) provide excellent zero and

• The measuring cell design makes it resistant to contamination and

essentially flow insensitive. Since it has no moving parts, the transmitter can handle the shock and vibration found in many industrial applications.

• You can select a 2-port version for measurement of zero-based gas

mixtures using a sealed reference gas (air), or 4-port version for measurement of zero-suppressed gas mixtures (and some other special calibrations) using a flowing reference gas.

Features and Capabilities 1-1

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Introduction (cont.) • The TMO2-TC modular construction means that the unit can be

field-calibrated quickly and easily; or the plug-in measuring cell can be replaced with a pre-calibrated spare in minutes.

• The TMO2-TC Transmitter, with weatherproof and explosion-

proof packaging, is designed to be installed as close as possible to the process sample point. It can be located up to 2,800 feet (850 meters) from the TMO2D-TC Display using inexpensive, unshielded cable.

The TMO2D-TC Display offers several advanced features:

• The microprocessor-based TMO2D-TC electronics unit features a

two-line, backlit LCD display, full keypad, and menu-driven software to provide easy access to a variety of features, including user-selectable gas range, recorder output range, alarm settings, and automatic calibration (Auto Cal).

• Standard 0/4-20 mA output and dual Form C alarm relays, coupled

with optional dual isolated 0/4-20 mA outputs and dual relays for Auto Cal, provide excellent flexibility for process control applications.

• Long-term, hands-off performance is provided by Auto Cal. When

re calibration is desired, the TMO2D-TC controls solenoid valves in the sample system to bring zero and span gases to the TMO2-TC Transmitter. Then, TMO2D-TC software compares the Auto Cal readings with factory calibration data and makes any necessary corrections -automatically - so manual re calibration requirements can be reduced significantly.

• The TMO2D-TC Display, with bench, rack, panel, weatherproof,

and explosion-proof packaging options, can be located adjacent to the TMO2-TC Transmitter, or up to 2,800 feet (850 meters) away using inexpensive, unshielded cable.

1-2 Features and Capabilities

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Theory of Operation The TMO2-TC Transmitter measures the concentration of a gas in a

binary gas mixture by measuring the thermal conductivity of the sample gas and comparing it to the thermal conductivity of a selected reference gas.

Two ultra-stable, glass-coated thermistors are used: one in contact with the sample gas, and the other in contact with a selected reference gas. The thermistors are mounted so that they are in close proximity to the stainless steel walls of the sample chamber. The entire sensor is

heated to 55 sensor temperature using a constant current source. The thermistors lose heat to the walls of the sample chamber at a rate that is proportional to the thermal conductivity of the gas surrounding them. Thus, each thermistor will reach a different equilibrium temperature. The temperature difference between the two thermistors is detected in an electrical bridge circuit. It is amplified and converted to a 4-20 mA output proportional to the concentration of one of the constituents of the binary gas mixture.

C (or 70 oC) and the thermistors are heated above the

Appendix A contains a Table of Relative Thermal Conductivity of Common Gases. Figure 1-1 on the next page shows several of these values graphically. In order to measure 0 to 25% H

in N2, the

reference gas would be air (2-port version, sealed reference gas), and, for calibration, the zero gas would be 100% N

span gas 25% H

, the reference gas would be 100% H2 (4-port version, flowing

(balance N2). In order to measure 90-100% H2 in

reference gas), the zero gas would be 90% H span gas 100% H

(the same as the reference gas).

(i.e., 0 % H2) and the

(balance N2), and the

The TMO2-TC has a polarity adjustment switch which permits the measurement of gases (such as CO

) with relative thermal

conductivity less than the background gas.

Features and Capabilities 1-3

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Theory of Operation (cont.)

Air/N

C4-C

CH4Ne

Figure 1-1: Relative Thermal Conductivity of Several Common Gases

1-4 Features and Capabilities

May 2003

System Description The basic TMO2D-TC measurement system consists of a TMO2-TC

Transmitter mounted in a sample system and connected to a TMO2DTC Display. The sample system is mandatory, and can be provided by GE Panametrics or constructed according to our recommendations. The TMO2D-TC is supplied with a standard 10 ft. (3 m), 3-wire cable for connecting the transmitter to the display module. Lengths up to 2,800 ft. (850 m) are optionally available.

TMO2-TC Transmitter The TMO2-TC Transmitter is self-contained, consisting of the

thermal conductivity sensor and associated electronics. It requires 24 VDC power (1 amp maximum at power-up), which it receives from the TMO2D-TC Display. It provides a 4-20 mA output signal to the display module proportional to the thermal conductivity of the sample gas and to the concentration of one of the gases in the binary mixture.

The TMO2-TC is designed to be installed in a sample system as close as possible to the process sample point. Thus, it is available in two environmental packages — weatherproof (NEMA-4X; IP65) and explosion-proof (Class I, Groups C,D, Div. 1; Cenelec EEx d II C T6) with the addition of flame arrestors to the sample/reference gas inlet and outlet.

Each environmental package is available in a standard 2-port (sealed reference gas) version, or optional 4-port (flowing reference gas) version.

Features and Capabilities 1-5

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2-Port (Sealed Reference Gas) Version

This standard configuration (see Figure 1-2 below) is used for zerobased ranges with air or nitrogen at atmospheric pressure as the balance or background gas. It utilizes air with desiccant in a factorysealed chamber as the reference gas. The following standard ranges and gases are provided:

0 to 1% 0 to 2% 0 to 5% 0 to 10% 0 to 25% 0 to 50% 0 to 100%

in N

CO2 in N2 (minimum range 0 to 5% CO2)|

in Air (minimum range 0 to 5% CO2)

He in N He in Air

Figure 1-2: 2-Port (Sealed Reference Gas) TMO2-TC

1-6 Features and Capabilities

11/1/95

4-Port (Flowing Reference Gas) Version

This optional configuration (see Figure 1-3 on the following page) is used for zero-suppressed ranges and some other special applications. Typically, a flowing reference gas of 100% H

following standard ranges and gases are provided:

90 to 100% 80 to 100%

in N

CO2 in N2/Air He in N

/Air

Note: For factory calibration pricing on the standard ranges and

gases, or for pricing on other zero-suppressed ranges and gases, please consult the factory.

The TMO2-TC is supplied with a standard measurement cell

operating temperature of 55

C. An optional 70 oC cell operating

temperature is available.

or CO2 is used. The

Note: The 70

high temperature applications, since it will result in reduced sensitivity.

C operating temperature should be selected only for

Features and Capabilities 1-7

11/1/95

4-Port (Flowing Reference Gas) Version (cont.)

Top View

Bottom View

Figure 1-3: 4-Port (Flowing Reference Gas) TMO2-TC

1-8 Features and Capabilities

May 2003

Sample System A sample system is mandatory for use with the TMO2-TC. The

design of the sample system will depend on the conditions of the sample gas and the requirements of the application. In general, a sample system must deliver a clean, representative sample to the TMO2-TC at a temperature, pressure, and flow rate that are within acceptable limits. Standard TMO2-TC sample conditions are as follows:

• Less than 50

temperature)

C (122 oF) temperature (for 55 oC cell operating

• Atmospheric pressure

• 0.5 SCFH (250 cc/min) flow rate

GE Panametrics offers sample systems for a wide variety of applications. Three standard sample systems for the TMO2-TC are shown in Chapter 2, Installation. For assistance in designing your own sample system, please consult the factory.

TMO2D-TC Display The TMO2D-TC Display receives a 4-20 mA signal from the TMO2-

TC Transmitter proportional to the concentration of one of the gases in the binary mixture (the sample gas). It then displays the concentration (and other information) on a 2-line x 24 character, backlit LCD.

It requires 100/120/220/240 VAC power (35 watts max.), and provides 24 VDC power to the TMO2-TC Transmitter. The standard TMO2D-TC provides a 0/4-20 mA analog output; an RS232C digital output; and dual Form C, SPDT relays for process monitoring and control. Dual isolated 0/4-20 mA outputs and a second pair of relays for Auto Cal are available as options.

The TMO2D-TC can be located adjacent to the TMO2-TC Transmitter or as far as 2,800 ft. (850 m) away. It is provided in bench, rack, panel, weatherproof (NEMA 4X; IP65), or explosionproof mounting configurations. The standard TMO2D-TC is suitable for use in general purpose areas. A package suitable for use in Class I, Div. 2 hazardous areas is available as an option. This package includes hermetically-sealed alarm relays.

Extra Cable (optional) GE Panametrics provides a 10 ft. (3 m) length of 3-wire, color-coded

cable with each TMO2D-TC to connect the transmitter to the display module. The same cable is available in lengths up to 2,800 ft (850 m). If you are using your own cable, refer to Chapter 2, Table 2-2, Cable Requirements, for recommendations.

Features and Capabilities 1-9

11/1/95

Typical Applications The TMO2D-TC can be used in a wide variety of industrial

applications where it is necessary to measure the concentration of one component of a binary gas mixture. It can also be used in pseudobinary gas mixtures where the ratio of concentrations of the background gas components remains constant, and in gaseous mixtures where the thermal conductivity of the gas of interest is significantly different from that of the background gas. Some typical industries and applications include:

• Metals Industry —

in heat treat furnace atmospheres

• Electric Power Industry —

in generator cooling systems

• Gas Production Industry —

Purity monitoring of argon, hydrogen, nitrogen, helium

• Chemical Industry —

in ammonia synthesis gas

in methanol synthesis gas

in chlorine plants

• Food Industry —

in fermentation processes

Ethylene Oxide (ETO) sterilization

• Steel Industry —

in blast furnace top gas

• Petroleum Industry —

in hydrocarbon streams

Two very common applications are as follows:

in N2 in heat treat furnace atmospheres - Zero-based 0-25%

1. H

, 2-Port (sealed reference gas, air)

purity in H2 electricity generator cooling - Zero-suppressed,

2. H

80-100% H

For more details on these applications, refer to Appendix B, Applications. For details on applications not shown in Appendix B, or if you wish to discuss your own application, please consult the factory.

, 4-Port (flowing reference gas, 100% H2)

1-10 Features and Capabilities

Chapter 2

Installation

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-1

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-2

Mounting the TMO2-TC Transmitter . . . . . . . . . . . . . . . . . . . . . . . .2-2

Mounting the Sample System . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-3

Mounting the TMO2D-TC Display . . . . . . . . . . . . . . . . . . . . . . . . . .2-6

Wiring the TMO2-TC Transmitter . . . . . . . . . . . . . . . . . . . . . . . . . .2-7

Wiring the TMO2D-TC Display . . . . . . . . . . . . . . . . . . . . . . . . . . .2-12

May 2003

Overview This chapter will describe how to mount and wire the TMO2-TC

Transmitter and its sample system, and the TMO2D-TC Display. You will find the following topics discussed:

• Introduction — A brief discussion of installation steps.

• Mounting the TMO2-TC Transmitter — How to mount the

transmitter in a sample system.

• Mounting the Sample System — Mounting and plumbing a GE

Panametrics sample system. Includes drawings of basic 2-Port and 4-Port sample systems, and an automatic 2-Port sample system.

• Mounting the TMO2D-TC Display — How to mount the different

TMO2D-TC packaging configurations.

• Wiring the TMO2-TC Transmitter — How to connect the

transmitter to the display module.

• Wiring the TMO2D-TC Display — Connecting 100/120/220/240

VAC power, 0/4-20 mA output and alarm relay wiring to the TMO2D-TC.

!WARNING!

TO ENSURE THE SAFE OPERATION OF THE

TMO2D-TC, YOU MUST INSTALL AND OPERATE IT

AS DESCRIBED IN THIS MANUAL. IN ADDITION, BE

SURE TO FOLLOW ALL APPLICABLE SAFETY CODES AND REGULATIONS FOR INSTALLING

ELECTRICAL EQUIPMENT IN YOUR AREA.

PROCEDURES SHOULD BE PERFORMED BY

TRAINED SERVICE PERSONNEL.

!ATTENTION EUROPEAN CUSTOMERS! IN ORDER TO MEET CE MARK REQUIREMENTS, YOU MUST INSTALL CABLES AS DESCRIBED IN

APPENDIX H.

Note: Different versions of the TMO2D-TC display have different

PC boards. In Appendix C refer to the appropriate drawings, as follows:

• Serial numbers 101 through 749, schematic 700-997 and PCB assembly drawing 703-997.

• Serial numbers 750 or greater, schematics 700-1226 and PCB assembly drawing 703-1226.

Installation 2-1

May 2003

Introduction Installation of the TMO2D-TC analyzer typically consists of five

steps:

1. Mounting the TMO2-TC Transmitter in a sample system. (If you purchased your sample system from GE Panametrics, this step has already been done for you.)

2. Mounting, plumbing (and possibly wiring) the sample system.

3. Mounting the TMO2D-TC Display.

4. Making wiring connections between the transmitter and the

display module.

5. Making wiring connections to the TMO2D-TC Display for power, outputs, and alarms.

Mounting the TMO2-TC Transmitter

This section applies only if you are mounting the TMO2-TC Transmitter to a sample system that has not been supplied by GE Panametrics.

Your sample system should deliver a clean, representative sample to the TMO2-TC at the proper temperature, pressure and flow rate. This usually means a clean, dry sample (free of solid and liquid particulates) at atmospheric pressure; a temperature no greater than

C (122 oF); and a flow rate of approximately 0.5 SCFH (250 cc/

50 min). Factory calibration of the sensor is at atmospheric pressure and

0.5 SCFH - higher or lower operating pressures may necessitate field-

calibration adjustment.

A simple sample system for a 2-Port TMO2-TC might have an inlet and/or outlet flow regulating needle valve; a flow meter; and a pressure gauge, in addition to the TMO2-TC Transmitter.

The TMO2-TC Transmitter should be mounted in the sample system

so that it is upright and level to within +/- 15

. Also, provide at least 9" of clearance above the top cover of the transmitter to allow access to the transmitter printed circuit board (PCB) for calibration and maintenance. For a 2-Port TMO2-TC, connect the sample system Sample Inlet and Sample Outlet portions to the appropriate TMO2TC port (see Drawing 712-225 in Appendix C for port location). For a 4-Port system, also connect the Reference Inlet and Reference Outlet portions to the appropriate TMO2-TC port (see Drawing 712-226 in Appendix C for port location).

!WARNING!

FOR EXPLOSION-PROOF UNITS, BE SURE TO

CONFORM TO ALL SAFETY AND ELECTRICAL

CODE REQUIREMENTS.

2-2 Installation

May 2003

Mounting the Sample System

Manual, 2-Port (Sealed Reference Gas) Sample System

You can order a complete sample system, which includes the TMO2TC Transmitter and all necessary components and sample tubing mounted on a metal panel, from GE Panametrics. Several standard sample systems are available; and custom-designed sample systems can be built to your exact specifications. Following are descriptions of three standard sample systems:

Figure 2-1 below shows a basic sample system for a 2-Port (sealed reference gas) TMO2-TC. This sample system consists of inlet needle valves for sample, zero, and span gases; a ball valve; a 2-port TMO2TC; a pressure gauge; and a flow meter. All components are mounted on a painted steel plate. Other components could be added for filtration (filter/coalescer), pressure control (regulator), or flow control (pump).

Figure 2-1: Basic Sample System for a 2-Port TMO2-TC

Installation 2-3

May 2003

Manual, 4-Port (Flowing Reference Gas) Sample System

Figure 2-2 below shows a basic sample system for a 4-Port (flowing reference gas) TMO2-TC. This sample system consists of inlet needle valves for sample, reference, and calibration gases; a 4-port TMO2TC; two pressure gauges; and two flow meters. All components are mounted on a painted steel plate. Other components could be added for filtration (filter/coalescer), pressure control (regulator), or flow control (pump).

Figure 2-2: Basic Sample System for a 4-Port TMO2-TC

2-4 Installation

11/1/95

Automatic, 2-Port (Sealed Reference Gas) Sample System

Figure 2-3 below shows an automatic sample system for a 2-Port (sealed reference gas) TMO2-TC. This sample system requires the Auto Cal option on the TMO2D-TC Display. It consists of inlet needle valves for sample, zero, span, and optional calibration gases; two electrically-actuated solenoid valves for gas selection; a 2-Port TMO2-TC; a pressure gauge; a flowmeter; a regulating needle valve; and a sample pump. All components are mounted on a painted steel plate. Other components could be added for filtration (filter/ coalescer), or pressure control (regulator).

Figure 2-3: Automatic Sample System

for a 2-Port TMO2-TC

Installation 2-5

May 2003

Automatic, 2-Port (Sealed Reference Gas) Sample System (cont.)

Mounting the TMO2DTC Display

When used in conjunction with the TMO2D-TC Display with the Auto Cal option, the above sample system allows automatic switching of sample, zero, and span gases during calibration. Refer to Appendix B, Applications, for details on sample systems designed by GE Panametrics for specific applications.

Mount the sample system as close as possible to the process sample point. Once the sample system is mounted, connect all inlet and outlet lines via the fittings on the sample system (1/4" compression). The sample line leading from the process to the sample system should be of 1/4" stainless steel tubing, and as short as possible in order to insure a representative sample.

The TMO2D-TC Display is available in five mounting configurations: bench, rack, panel, weatherproof, and explosionproof. See Appendix C, Outline and Installation Drawings, for dimensional drawings for each configuration, as well as rack/panel cutout dimensions.

No special mounting requirements are needed for the TMO2D-TC Display.

!WARNING!

FOR EXPLOSION-PROOF AND CLASS I, DIV. 2

UNITS, BE SURE TO CONFORM TO ALL SAFETY

AND ELECTRICAL CODE REQUIREMENTS.

!WARNING!

TO ENSURE THE SAFE OPERATION OF THE

TMO2D-TC, YOU MUST INSTALL AND OPERATE IT

AS DESCRIBED IN THIS MANUAL. IN ADDITION, BE

SURE TO FOLLOW ALL APPLICABLE SAFETY CODES AND REGULATIONS FOR INSTALLING

ELECTRICAL EQUIPMENT IN YOUR AREA.

PROCEDURES SHOULD BE PERFORMED BY

TRAINED SERVICE PERSONNEL.

2-6 Installation

1/20/97

Wiring the TMO2-TC Transmitter

Caution!

Always bring power to the TMO2-TC immediately after

installation, especially when it is mounted outdoors or in

a humid area.

This section describes how to wire the TMO2-TC Transmitter to the TMO2D-TC Display. First, the transmitter enclosure must be grounded. This can be done using an external ground screw on the TMO2-TC, or, if required, an internal ground screw located below the transmitter PCB. See Figure 2-4 below for the location of both ground screws.

Figure 2-4: Location of Ground Screws

= Protective Conductor Terminal

Internal Ground Screw

External Ground Screw

Installation 2-7

11/1/95

Wiring the TMO2-TC Transmitter (cont.)

Wiring connections to the TMO2-TC Transmitter are made to terminal block TB1, which is accessed by removing the TMO2-TC cover. See Figure 2-5 below for the location and pin designations for TB1. Also refer to Appendix C, Outline and Installation Drawings.

1 2 3 4

+24 VDC/1Amp

Return

Output Signal

No Connection

1 2

3 4

Red

Blk

Wht

Figure 2-5: TMO2-TC Wiring Connections

Wiring connections to the TMO2D-TC Display are made to the terminal block labeled OXYGEN CELL at the rear of the TMO2DTC. See Figure 2-6 on the following page for the location of the OXYGEN CELL terminal block.

Caution!

Do not make any connections to unassigned or unused

terminals.

2-8 Installation

Wiring the TMO2-TC Transmitter (cont.)

11/1/95

TMO2-TC

Outlet

TMO2D-TC

OXYGEN

SPARE

Cell

+24V

RTN

REC

RECORDERS

INPUTS

COMP

0/4-20 mA

+24V

RTN

REC A REC B

IN2

IN1

AUTOCAL

PROCESS CAL

C NC NO

ALARMS

LOW HIGH

C NC NOC NC NO

Zero

Gas

Span

Gas

Process Gas Inlet

Auto-Calibration System

High

Alarm

Solonoid Valve

Power

Low

Alarm

Power

Figure 2-6: TMO2D-TC Wiring Connections

Installation 2-9

May 2003

Wiring the TMO2-TC Transmitter (cont.)

Table 2-2 below shows the transmitter to display module wiring connections using the standard GE Panametrics TMO2D-TC cable. This cable can be used for distances up to 2,800 ft (850 m). If you are using your own cable, refer to Table 2-2 for cable requirements.

Table 2-1: Cable Requirements

Max Cable Length Cable Size

Sq.

Feet Meters AWG

450 130 22 0.35

700 200 20 0.6 1,050 320 18 1.0 1,700 500 16 1.2 2,800 850 14 2.0 4,000 1,200 12 3.0

Use the following steps to make the proper connections:

Millimeters

1. Route the cable into the transmitter through one of the 3/4" conduit holes.

!WARNING!

BE SURE TO PLUG UP THE UNUSED CONDUIT

HOLE ON THE SIDE OF THE TRANSMITTER IN

ORDER TO MAINTAIN THE APPROPRIATE

WEATHERPROOF OR EXPLOSION-PROOF

RATING.

2. Unplug TB1 by carefully pulling it directly up without bending the pins attached to the PCB.

3. Loosen the TB1 side screws and insert the colored wires into the corresponding openings on top of TB1. See Table 2-1 above for color-coded pin designations.

!WARNING!

BE SURE THAT +24 VDC (RED WIRE) IS

CONNECTED TO TERMINAL TB1-1. CONNECTING

+24 VDC POWER TO ANY OTHER TERMINAL WILL

DAMAGE THE TMO2-TC PCB, REQUIRING

FACTORY REPAIR.

2-10 Installation

11/1/95

Wiring the TMO2-TC Transmitter (cont.)

Table 2-2: Transmitter Power and Output Connections

Transmitter

Wire Color Gage

+24 VDC Red 14 AWG Pin 1 +24V

Return Black 14 AWG Pin 2 RTN

Signal White 22 AWG Pin 3 OX

4. Tighten the side screws, and carefully plug TB1 back onto the PCB.

5. Connect the other end of the cable in a similar manner to the OXYGEN CELL terminal block located on the rear panel of the TMO2D-TC Display. See Table 2-1 on the previous page for color-coded pin designations.

TB1 Display

Installation 2-11

1/20/97

Wiring the TMO2D-TC Display

Figure 2-6 on page 2-9 shows possible output wiring connections between the TMO2D-TC Display and recorders, alarms, and automatic sample systems. Note that the standard TMO2D-TC has a single, non-isolated 0/4-20 mA output (RCDR A) and dual Form C SPDT alarm relays (ALARMS). Dual isolated 0/4-20 mA outputs (RCDR A/RCDR B) and dual auto calibration (Auto Cal) relays are optional.

The alarm relays can be wired in a “fail-safe” configuration that will allow a contact closure when the H

level falls below a certain point

or rises above a certain point, or when a power failure occurs. For example, to have a contact closure when the H

level falls below 1%

or rises above 5%, or in the event of a power failure, do the following:

TMO2D-TC Alarm Wire Program For Use As

LOW COM/NC 5% H

HIGH COM/NC

1% H

HIGH

LOW

Note: See Chapter 4, Programming the TMO2D-TC, The Alarms

Menu, for information on programming the alarm set points.

When the LOW alarm is wired and programmed as above, a loss of power or an H

reading greater than 5% causes a contact closure that

can be used as a HIGH or “fail-safe” alarm.

When the HIGH alarm is wired and programmed as above, a loss of power or an H

reading less than 1% causes a contact closure that can

be used as a LOW or “fail-safe” alarm.

!ATTENTION EUROPEAN CUSTOMERS!

IN ORDER TO MEET CE MARK REQUIREMENTS,

YOU MUST SHIELD AND GROUND ELECTRICAL

CABLES AS DESCRIBED IN APPENDIX H.

!WARNING!

TO ENSURE THE SAFE OPERATION OF THE

TMO2D-TC, YOU MUST INSTALL AND OPERATE IT

AS DESCRIBED IN THIS MANUAL. IN ADDITION, BE

SURE TO FOLLOW ALL APPLICABLE SAFETY CODES AND REGULATIONS FOR INSTALLING

ELECTRICAL EQUIPMENT IN YOUR AREA.

PROCEDURES SHOULD BE PERFORMED BY

TRAINED SERVICE PERSONNEL.

2-12 Installation

1/20/97

Wiring the TMO2D-TC Display (cont.)

The TMO2D-TC also has a bi-directional, industry standard RS232C serial port, which can be connected to a terminal or PC that supports the RS232C protocol. Figure 2-7 below shows the wiring pin designations. The 25-pin, male D connector is located at the right on the rear of the TMO2D-TC Display.

Pin 14

Pin 1

Pin 2 = Transmit

(from)

Pin 3 = Receive (to)

Pin 7 = Return (ground)

Figure 2-7: RS232C Wiring Connections

Installation 2-13

1/20/97

Wiring the TMO2D-TC Display (cont.)

The TMO2D-TC Display is connected to 100/120/220/240 VAC power using the supplied power cord.

Caution!

The interconnecting wiring between the TMO2-TC

Transmitter and TMO2D-TC Display must be completed

before powering up.

Note: The power cord is the main disconnect device.

Note: = Protective Conductor Terminal

IMPORTANT: To comply with the European Low Voltage Directive,

you must install a switch or circuit breaker on the input power line. For greatest safety, locate the circuit breaker or switch near the unit that the line serves.

2-14 Installation

Chapter 3

Operation

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-1

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-1

Powering Up the TMO2D-TC Analyzer . . . . . . . . . . . . . . . . . . . . . .3-1

Establishing a Flow of Sample Gas . . . . . . . . . . . . . . . . . . . . . . . .3-2

Operating the TMO2D-TC Display. . . . . . . . . . . . . . . . . . . . . . . . . .3-3

1/20/97

Overview This chapter provides information on operating the TMO2D-TC

analyzer. You will find the following topics discussed:

• Introduction — A brief discussion of operational considerations.

• Powering Up the TMO2D-TC Analyzer — How to start the

TMO2D-TC.

• Establishing a Flow of Sample Gas — Basic sample gas

considerations.

• Operating the TMO2D-TC Display — A description of the

TMO2D-TC LCD display and keypad.

Introduction The TMO2D-TC operation consists of only three steps:

1. Supplying power to the analyzer and turning it on.

2. Establishing a flow of sample gas through the system.

Powering Up the TMO2D-TC Analyzer

3. Operating the display module.

If you have not already done so, please read Chapter 2, Installation, for details on mounting and wiring the TMO2-TC Transmitter, the sample system, and the TMO2D-TC Display.

The TMO2D-TC Display has a power switch located at the top right of the front panel. It will begin operation as soon as it is turned to the ON position.

Note: The power cord is the main disconnect device.

Note: If your TMO2D-TC was supplied in a weatherproof enclosure

or was modified for use in Class I, Div. 2 hazardous areas, the power switch will be inoperative. The TMO2D-TC will begin operating as soon as it is connected to a 100/120/220/240 VAC power source.

The TMO2D-TC Display will provide 24 VDC power to the TMO2TC Transmitter. Because the transmitter is controlled at a constant

C (131oF) operating temperature, allow 30 minutes for the unit to

55 warm up and reach temperature stability. During this time, you can establish a sample gas flow through the sample system.

IMPORTANT: To comply with the European Low Voltage Directive,

you must install a switch or circuit breaker on the input power line. For greatest safety, locate the circuit breaker or switch near the unit that the line serves.

Operation 3-1

May 2003

Powering Up the TMO2D-TC Analyzer (cont.)

Establishing a Flow of Sample Gas

When the display module is first turned on, it will show the firmware version installed. For example:

GE Panametrics

TMO2D STD.00X.X

Next it will do some internal testing:

GE Panametrics

Testing RAM ... Passed.

The above sequence should take about 10 seconds. The display module then begins taking measurements from the transmitter, and the LCD displays the gas concentration, the time, and the Alarm status. Allow the transmitter 30 minutes to warm up before accepting data from the TMO2D-TC.

Open the necessary valves to establish a sample gas flow of 0.5 SCFH (250 cc/min) at atmospheric pressure. Make sure that nothing obstructs the flow of sample gas, thereby causing a pressure build-up in the sensing chamber. For proper operation, the TMO2-TC Transmitter should be vented to atmosphere.

Note: Unless otherwise specified, the TMO2-TC is factory

calibrated at atmospheric pressure and 0.5 SCFH (250 cc/ min) and should therefore be operated at atmospheric pressure. Operating the TMO2-TC at any other pressure will necessitate a field calibration at that pressure in order to maintain accuracy. See Chapter 5, Calibration.

If you are using the 4-Port (flowing reference gas) configuration, open the necessary valves to establish a reference gas flow of 0.5 SCFH (250 cc/min) at atmospheric pressure. Note that you can use a reference gas flow as low as 5 cc/min in order to conserve gas.

3-2 Operation

May 2003

Operating the TMO2DTC Display

The TMO2D-TC Display has a 2-line x 24 character backlit Liquid Crystal Display (LCD) screen, and a 16-key keypad (see Figure 3-1). After displaying the firmware version and testing RAM, the display module enters Operate Mode.

Figure 3-1: TMO2D-TC Display and Keypad

LCD Display In Operate Mode, the left side of the top line of the LCD shows the

name of the gas being measured (e.g., H the factory according to initial specifications. If you should need to

change the name of the gas, refer to Appendix E, Special Programming. This manual will refer to the gas being measured as

. The left side of the bottom line shows the gas concentration in %

(see Figure 3-1 above).

The right side of the top line is a clock. When the TMO2D-TC is powered up, this clock will start from 00:00:00. The current time (and date) can be entered in Programming Mode (see Chapter 4, Programming the TMO2D-TC). However, if power to the TMO2DTC is interrupted, the clock will be reset to 00:00:00.

The right side of the bottom line displays the alarm status. The word “Alarm:” is displayed. If the HIGH alarm is activated, an “H” will be displayed in reverse lettering. If the LOW alarm is activated, an “L” will be displayed.

, N2, SO2, CO2). It was set at

Keypad Except for the No key, which is used to enter Programming Mode, the

keypad does not function in Operate Mode. Pressing any other key will activate the display backlight.

Operation 3-3

Chapter 4

Programming

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-1

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-2

Key Functions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-3

Entering Programming Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-5

Menu Navigation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-5

The Main Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-6

11/1/95

Overview This chapter provides information on programming the TMO2D-TC

Display using either the 16-key keypad or the RS232C serial port. You will find the following topics discussed:

• Introduction — A brief overview of the TMO2D-TC user program.

• Key Functions — Keypad key functions and their RS232C

equivalents when in Programming Mode.

• Entering Programming Mode — How to enter Programming Mode

from Operate Mode in order to access the user program.

• Menu Navigation — How to navigate the TMO2D-TC menu

structure.

• The Main Menu — A description of the Main menu functions.

• The Setup Menu — A description of the Setup menu functions.

• The Recorders Menu — A description of the Recorders menu

functions.

• The Alarms Menu — A description of the Alarms menu functions.

• The Tests Menu — A description of the Tests menu functions.

• The Calibration Menu — A description of the Calibration menu

functions.

Programming 4-1

11/1/95

Introduction The TMO2D-TC Display contains an interactive, user-friendly

program that allows the user to customize the TMO2D-TC to their application and change operating parameters as desired. The program is accessed through the TMO2D-TC keypad and LCD display, or the RS232C serial port using an ASCII terminal or PC.

Data entered into the TMO2D-TC by the user overrides any previously entered data, and is retained in memory for several years, even if power to the TMO2D-TC is interrupted.

Note: The time in the TMO2D-TC is reset to 00:00:00 if power is

interrupted. The date information is retained if power is interrupted, but may be incorrect if power is not restored immediately. Both date and time should be re-entered in the event of power interruption.

!WARNING! IF THE CABLE CONNECTING THE TMO2D-TC DISPLAY TO THE TMO2-TC TRANSMITTER IS

DISCONNECTED WHILE THE TMO2D-TC IS

POWERED UP, DATA MAY BE LOST. ALWAYS

REMOVE POWER FROM THE DISPLAY MODULE

BEFORE DISCONNECTING THE TMO2D-TC TO

TMO2-TC CABLE.

4-2 Programming

11/1/95

Key Functions When the TMO2D-TC is in Operate Mode, it will ignore all keys

except the No key. On receipt of a No, the LCD will display Enter Code:, and await the user program entry code, 1 2 3. During code

entry, the TMO2D-TC continues to update the data display, alarm status, and recorder output.

If the correct code is entered, the TMO2D-TC switches to Programming Mode. While it is in Programming Mode, data collection is suspended, and alarm status and recorder outputs are held at their current values.

In Programming Mode, the keypad keys are divided into three groups: Yes/No, Selector, and Data Entry:

Ye s / No : The Yes key is used to select a displayed menu option

or to confirm a numeric entry. The No key is used to scroll forward to the next menu option or to clear a numeric entry.

Selector: The Left and Right Arrow keys are used as selector

keys. The Left Arrow key is used to step backward through a displayed list of menu options, or as a backspace (erase) key during numeric entry. The Right Arrow key is used to step forward through a displayed list of menu options. It is equivalent to the No key.

Data

The 0-9, -, and . keys are used to enter numeric values.

Entry:

All keypad and most display operations can be performed remotely on the RS232C serial port using a terminal or PC that supports the RS232C protocol. Table 4-1 on the next page provides a list of keypad keys (left column) and their ASCII (center column) and terminal/PC (right column) equivalents.

Programming 4-3

11/1/95

Key Functions (cont.)

Table 4-1: TMO2D-TC RS232C Serial Port

Corresponding Keys

TMO2D-TC

Keypad ASCII Terminal/PC Keys

0 030 0 1 031 1 2 032 2 3 033 3 4 034 4 5 035 5 6 036 6 7 037 7 8 038 8 9 039 9

-02D-

.02E. Y00DENTER_ N 01B ESCAPE

←

008 BACKSPACE

→

020 SPACE BAR

4-4 Programming

11/1/95

Entering Programming Mode

When the TMO2D-TC is turned on, it enters Operate Mode (after approx. 10 seconds). In order to enter data into the user program or to check previously entered values, the TMO2D-TC must be switched to Programming Mode. To enter Programming Mode:

1. Press the No key.

2. The top line of the display will show Enter Code:

3. Key in the code 1 2 3, pressing each key slowly and firmly. The display will show an * after each digit is entered.

Note: If an incorrect code is entered, or a non-numeric (Yes/No or

Arrow) key is pressed, or the keys are pressed too quickly, the TMO2D-TC will return to Operate Mode, and the user must press No again to re-enter the code.

4. The display will now show:

MAIN MENU

Setup?

5. The TMO2D-TC is now in Programming Mode, ready for user input.

Menu Navigation When a menu item is being displayed, the first line of the LCD shows

the title of the current menu in capital letters. The second line shows the current menu option followed by a question mark. Press Yes to select a displayed option, No or Right Arrow to move on to the next option, or Left Arrow to move back to the previous option.

Note: The menu options are circular — skipping over the last option

in the list returns to the first option.

Programming 4-5

11/1/95

The Main Menu The Main menu consists of six submenus: Setup, Recorders, Alarms,

Tests, Calibration, and Resume. Selecting Resume returns the TMO2D-TC to Operate Mode. Refer to Appendix D, Menu Flow Diagrams, for a flow diagram of the Main menu.

The Setup Menu The Setup menu consists of seven options: Set Time, Set Date, Set

Backlight, Set Display, Set Communications, Set Error Handling, and Done. These options allow the user to change basic operating parameters. Selecting Done returns the TMO2D-TC to the Main menu. Refer to Appendix D, Menu Flow Diagrams, for a flow diagram of the Setup menu.

Set Time

Set Time sets the current time in 24-hour format. For example, to enter 1:15 PM (13.15 in 24-hour time):

MAIN MENU

Setup?

SETUP MENU Set Time?

Enter 24 hour time:

HH.MM [XX.XX]: 13.15

SETUP MENU Set Time?

Press Yes to enter the Setup menu.

Press Yes to set the time.

Use the Data Entry keys to enter

13.15 (the X’s represent the previous entry). Press Yes to

confirm the entry; then press Yes again to exit.

Press No to move to the next option on the Setup menu.

4-6 Programming

11/1/95

Set Date

Set Date sets the current date in USA (month, day, year) format. For example, to enter August 12, 1994:

SETUP MENU Set Date?

Enter Date (MM.DD.YY):

XX.XX.XX]: 08.12.94

Press Yes to set the date.

Use the Data Entry keys to enter

08.12.94 (the X’s represent the previous entry). Press Yes to

confirm the entry; then press Yes again to exit.

SETUP MENU

Set Date?

Press No to move to the next option on the Setup menu.

Set Backlight

The LCD contains an electro-luminescent (EL) panel to enhance the readability of the screen in dim light. EL panels have a finite life span, dimming with use. To maintain the life of the EL backlight, the TMO2D-TC will automatically turn the backlight off after a predetermined time period. The backlight time-out period can be set from 0 (never on) to 60 minutes. The default is 3 minutes. For example, to enter a time-out of 10 minutes:

SETUP MENU Set Backlight?

SETUP MENU

Remain ON (min) [XX]: 10

Press Yes to set the backlight time-out period.

Use the Data Entry keys to enter 10 (the X’s represent the previous entry). Press Yes to

confirm the entry; then press Yes again to exit.

SETUP MENU

Set Backlight?

Press No to move to the next option on the Setup menu.

Set Display

This option is not applicable to the TMO2D-TC and should not be used.

SETUP MENU

Set Display?

Press No to move to the next option on the Setup menu.

Programming 4-7

11/1/95

Set Communications

The Set Communications menu consists of three options: Set Baud Rate, Set Update Rate, and Done. These options allow the user to change RS232C communications parameters. Selecting Done returns the TMO2D-TC to the Setup menu. Refer to Appendix D, Menu Flow Diagrams, for a flow diagram of the Set Communications menu.

Set Baud Rate

The TMO2D-TC supports communications rates of 9600, 4800, 2400, 1200, and 300 baud. The default setting is 9600 baud, Word size is fixed at 8 bits, 1 stop bit, NO parity.

Note: The use of 300 baud greatly limits the computation speed of

the TMO2D-TC, and is not recommended. It is provided solely for compatibility with older equipment.

SETUP MENU Set Communications?

SET COMMUNICATIONS

Set Baud Rate?

SELECT BAUD RATE

9600 baud?

Press Yes to enter the Set Communications menu.

Press Yes to set the baud rate.

Use the No or Arrow keys to scroll through the choices (9600, 4800, 2400, 1200, 300). Press Yes to select the desired baud rate and exit to the Set Communications submenu.

Note: The baud rate can also be changed via a terminal/PC

connected to the RS232C port; however, this practice is not recommended. Since the TMO2D-TC will immediately change to the new baud rate, the display and keyboard operation will not be correct until the baud rate of the terminal/PC is changed to match the new baud rate set in the TMO2D-TC.

4-8 Programming

11/1/95

Set Update Rate

This option is used to change the interval at which data is sent to the RS232C serial port. The data update rate can be set from 0 (no data sent) to 300 seconds. The default rate is 1 second. For example, to set an update rate of 180 seconds:

SETUP MENU Set Update Rate?

SET COMMUNICATIONS

Data Interval [XXX]: 180

SET COMMUNICATIONS Set Update Rate?

SET COMMUNICATIONS

Done?

SETUP MENU Set Communications?

Press Yes to set the update rate.

Use the Data Entry keys to enter 180 (the X’s represent the previous entry). Press Yes to

confirm the entry; then press Yes again to exit.

Press No to move to the next option on the SET COMMUNICATIONS submenu.

Press Yes to exit to the Setup menu.

Press No to move to the next option on the Setup menu.

Programming 4-9

11/1/95

Set Error Handling

The Set Error Handling option is used to program the LCD, output(s), and alarms to respond to an invalid H

over-range) that occurs when the TMO2D-TC is in Operate mode. An invalid measurement occurs if the H

mA or greater.

measurement (under-range or

reading is 1 mA or less, or 24

Note: Error handling for an invalid H

measurement is independent

of error handling for Auto Cal (see “Auto Cal Parameters” in the Calibration menu). If both error conditions occur simultaneously, error handling for the invalid H

measurement will take precedence.

Follow the steps below to enable Error Handling, set the LCD, and select the output and alarm responses:

SETUP MENU Set Error Handling?

Enable Error Handling:

[YES] no

Press Yes to select the Set Error Handling option.

Press the No or the Arrow keys to select YES. Press Yes to confirm.

Note: If you select NO and press Yes to confirm, you will be

immediately returned to the Setup menu.

SYSTEM ERROR EFFECTS Set Display Response?

Press Yes to set the LCD response.

Display System Error?

yes [NO]

Press the No or the Arrow keys to select your choice. Press Yes to confirm.

SYSTEM ERROR EFFECTS

Set Display Response?

Press No to move to the next option on the System Error Effects menu.

SYSTEM ERROR EFFECTS

Set Alarm Response?

4-10 Programming

Press Yes to set the alarm response.

Set Error Handling (cont.)

11/1/95

Select Alarm Effect? No Effect?

Select Alarm Effect?

Trip High?

Select Alarm Effect? Trip Low?

Select Alarm Effect?

Trip Both?

SYSTEM ERROR EFFECTS Set Alarm Response?

SYSTEM ERROR EFFECTS

Set Recorder Response?

Select Recorder Effect? No Effect?

Select Recorder Effect?

Force High?

Use the No or Arrow keys to scroll through the choices and

press Yes at your choice.

Press No to move to the next option on the System Error

Effects menu. Press Yes to set the recorder output(s) response.

Use the No or Arrow keys to scroll through the choices and

press Yes at your choice.

Select Recorder Effect? Force Low?

Select Recorder Effect?

Hold Last Value?

SYSTEM ERROR EFFECTS Set Recorder Response?

SYSTEM ERROR EFFECTS

Done?

Press No to move to the next option on the System Error

Effects menu. Press Yes to return to the Setup menu.

Programming 4-11

11/1/95

Set Error Handling (cont.)

SETUP MENU Set Error Handling?

SETUP MENU

Done?

MAIN MENU Setup?

Press No to move to the next option on the Setup menu.

Press Yes to return to the Main menu.

Press No to move to the next option on the Main menu.

4-12 Programming

11/1/95

The Recorders Menu The Recorders menu is used to scale the 0/4-20 mA analog output(s).

Selecting A allows the user to scale the first analog output. Selecting B allows the user to scale the second analog output (if one is present). Selecting Done returns the TMO2D-TC to the Main menu. Refer to Appendix D, Menu Flow Diagrams, for a flow diagram of the Recorders menu.

The TMO2D-TC provides a choice of one non-isolated 0/4-20 mA output, or two isolated 0/4-20 mA outputs. Both recorder options can be set for a 0-20 mA or 4-20 mA response, and can be scaled anywhere within the range of the transmitter.

Note: The TMO2D-TC user program will accept settings for two

outputs, A and B. However, if the TMO2D-TC has been purchased with only a single, non-isolated 0/4-20 mA output, only recorder A is effective.

Use the steps in the following example to set up recorders A and B. We will set recorder A for a 4-20 mA output, with 4 mA equal to 0%

and 20 mA equal to 100% H2.

MAIN MENU Setup?

MAIN MENU

Recorders?

Select Recorder to set:

[A] B done

Rcd A Output (mA):

0-20 [4-20]

Recorder A 4 mA Value %H2 [XX.XX]: 0.00

Recorder A 20 mA Value %H2 [XXX.XX]: 100.00

Press No or Right Arrow until Recorders? appears.

Press Yes to enter the Recorders menu.

Press No or the Arrow keys to select A. Press Yes to confirm the entry.

Press No or the Arrow keys to select 4-20. Press Yes to confirm the entry. Use the Data Entry keys to enter

0.00 (the X’s represent the previous entry). Press Yes to confirm the entry; then press Yes again to exit.

Use the Data Entry keys to enter

100.00 (the X’s represent the previous entry). Press Yes to

confirm the entry; then press Yes again to exit.

Programming 4-13

11/1/95

The Recorders Menu (cont.)

Select Recorder to set:

[A] B done

MAIN MENU Recorders?

Recorder B is scaled in the same manner. After Recorder B is scaled, use the No or Arrow keys to select DONE. Press Yes to return to the Main menu.

Press No to move to the next option on the Main menu.

4-14 Programming

11/1/95

The Alarms Menu The TMO2D-TC is provided with two single-pole double throw

(SPDT), Form C alarm relays for use in activating alarm devices. See Chapter 6, Specifications, for details on relay specifications, and Chapter 2, Installation, for wiring recommendations. Both relays provide a normally-open (NO) and a normally-closed (NC) set of contacts. The alarms are addressed as HIGH or LOW. The HIGH alarm relay will change state when the current reading becomes greater than or equal to the HIGH alarm set point. The LOW alarm relay will change state when the current reading becomes less than or equal to the LOW alarm set point. Refer to Appendix D, Menu Flow Diagrams, for a flow diagram of the Alarms option.

Use the steps in the following example to set the HIGH and LOW alarm relays. We will set the HIGH alarm relay to 75% H

LOW alarm relay to 25% H

, and the

MAIN MENU Setup?

MAIN MENU

Alarms?

Select Alarm to set:

[HIGH] low done

Enter Alarm Setpoint:

High %H

Select Alarm to set:

[HIGH] low done

Enter Alarm Setpoint: Low %H

Select Alarm to set:

high [LOW] done

MAIN MENU Alarms?

[XX.XX]:

Press No or Right Arrow until Alarms? appears.

Press Yes to enter the Alarms menu.

Press No or the Arrow keys to select HIGH. Press Yes to confirm the entry.

Use the Data Entry keys to enter

75.00 (the X’s represent the previous entry). Press Yes to

confirm the entry; then press Yes again to exit.

Press No or the Arrow keys to select LOW. Press Yes to confirm the entry.

Use the Data Entry keys to enter

25.00 (the X’s represent the previous entry). Press Yes to

confirm the entry; then press Yes again to exit.

Press No or the Arrow keys to select DONE. Press Yes to return to the Main menu.

Press No to move to the next option on the Main menu.

Programming 4-15

11/1/95

The Tests Menu The Tests menu consists of four options: DVM Test, Recorder

Calibrate, Alarms Test, and Done. These options allow the user to perform operational tests on the analog outputs and alarm relays, and to directly measure the raw signal from the TMO2-TC Transmitter. Selecting Done returns the TMO2D-TC to the Main menu. Refer to Appendix D, Menu Flow Diagrams, for a flow diagram of the Tests menu.

DVM Test

The DVM test allows the TMO2D-TC to operate as a simple, digital voltmeter to measure, in milliamps, the signal being received from the TMO2-TC Transmitter. The TMO2D-TC is updated approximately twenty times per second, facilitating connection and calibration of the TMO2-TC Transmitter.

Follow the steps below to test the input signal from the TMO2-TC Transmitter:

MAIN MENU Setup?

MAIN MENU

Te st s?

TESTS

DVM Test?

Select DVM Input:

[GAS] comp done

Press No or Right Arrow until Tests? appears.

Press Yes to enter the Tests menu.

Press Yes to enter the DVM test option.

Press No or the Arrow keys to select GAS. Press Yes to confirm.

Note: The COMP option is not applicable to the TMO2D-TC, and

should not be used. If you select COMP by mistake, you should see:

H2 DVM TEST

0.00 mA

Press any key to exit.

4-16 Programming

The Tests Menu (cont.)

11/1/95

H2 DVM TEST

XX.XX mA

The X’s represent the mA signal from the TMO2-TC Transmitter,

which will update continuously. Press any key to exit.

Select DVM Input:

[GAS] comp done

Press No or the Arrow keys to select DONE. Press Yes to exit to the Tests menu.

TESTS

DVM Test?

Press No to move to the next option on the Tests menu.

Recorder Calibrate

The Recorder Calibrate test allows a selected % gas composition to be output to the recording device to facilitate adjustment of the device’s zero and span.

For example, to enter a %H

TESTS Recorder Calibrate?

Select Recorder to test:

[A] B done

Set Recorder A to:

[XX.XX]: 36.39

Select Recorder to test: [A] B done

TESTS

Recorder Calibrate?

of 36.39 to be output to recorder A:

Press Yes to enter the Recorder Calibrate option.

Press No or the Arrow keys to select A. Press Yes to confirm the entry. Use the Data Entry keys to enter

36.39 (the X’s represent the previous entry). Press Yes to confirm the entry; then press Yes again to exit.

Recorder B (if present) is tested in the same manner. After you are done, press No or the Arrow keys to select DONE. Press Yes to exit to the Tests menu.

Press No to move to the next option on the Tests menu.

Programming 4-17

11/1/95

Alarms Test

The Alarms test enables you to trip and reset the alarm relays using the keypad, in order to test the operation of external alarm devices and circuits. For example, to test the HIGH alarm relay:

TESTS Alarms Test?

Select Alarm to test:

[HIGH] low done

Press Yes to enter the Alarms test option.

Press No or the Arrow keys to select HIGH. Press Yes to confirm the entry.

Turn High Alarm: [ON] off done

Press No or the Arrow keys to select ON. Press Yes to confirm.

Note: Upon selecting the ON option and pressing Yes, the HIGH

alarm relay will turn on, and the brackets will automatically move to OFF.

Turn High Alarm:

on [OFF] done

Press Yes to turn the HIGH alarm off.

Note: Upon selecting the OFF option and pressing Yes, the HIGH

alarm relay will turn off and the brackets will automatically move to ON.

Turn High Alarm:

[ON] off done

Select Alarm to test:

[HIGH] low done

Press No or the Arrow keys to select DONE. Press Yes to exit.

The LOW alarm is tested in the same manner. After you are done, press No or the Arrow

keys to select DONE. Press Yes to exit to the Tests menu.

TESTS Alarms Test?

TESTS

Done?

MAIN MENU

Te st s?

4-18 Programming

Press No to move to the next option on the Tests menu.

Press Yes to return to the Main menu.

Press No to move to the next option on the Main menu.

May 2003

The Calibration Menu The Calibration menu consists of three options: Auto Cal Parameters,

Edit Calibration Data, and Done. These options allow the user to perform automatic zero and span calibration of the TMO2D-TC, and to enter measurement parameters and calibration data. Selecting Done returns the TMO2D-TC to the Main menu. Refer to Appendix D, Menu Flow Diagrams, for a flow diagram of the Calibration menu.

Auto Cal Parameters

The TMO2D-TC can be programmed to perform an automatic calibration procedure (Auto Cal) at specified time intervals ranging from minutes to months. By performing measurements on two calibration gases (zero and span), the TMO2D-TC can automatically correct for changes in the response of the TMO2-TC Transmitter without operator intervention. Auto Cal does not physically recalibrate the TMO2-TC Transmitter, but instead creates a drift curve to the TMO2-TC calibration data that is stored in memory in the TMO2D-TC Display. Refer to Chapter 5, Calibration, for details on manually calibrating the TMO2-TC Transmitter.

Note: Auto Cal requires the CAL option to be ordered with the

TMO2D-TC. It also requires a sample system with electrically-actuated solenoid valves, and zero and span gases for use during Auto Cal. See Figure 2-3 for a description of a suitable sample system. If you do not presently have the Auto Cal option or the proper sample system, please consult GE Panametrics for assistance.

!WARNING!

USING THE AUTO CAL PROCEDURE WITHOUT

THE OPTIONS DESCRIBED ABOVE WILL

PRODUCE AN ERRONEOUS CALIBRATION AND

PREVENT PROPER OPERATION

OF THE TMO2D-TC.

At a user-specified time interval, the TMO2D-TC activates a solenoid valve on the sample system. This isolates the transmitter from the process stream, and connects it instead to the span calibration gas. After a programmable equilibration time, to allow the span gas to completely replace the process gas, measurements are taken of the span calibration gas. The TMO2D-TC then activates a second solenoid valve to connect to the zero calibration gas. After equilibration, measurements are taken of the zero calibration gas. The TMO2D-TC then reconnects the transmitter to the process stream. A final settling time takes place while the process gas completely replaces the zero gas.

Programming 4-19

11/1/95

The Calibration Menu (cont.)

Once settling has been completed, if no error has occurred, the TMO2D-TC calculates the amount of drift from the TMO2-TC Transmitter calibration, and creates a drift curve that is applied to the transmitter calibration data for future measurements. The transmitter calibration data is not changed.

If the Auto Cal measurements were out of range, the data is disregarded, and the TMO2D-TC uses the drift curve already stored in memory. If Auto Cal Error Handling is enabled, the display, analog output, and alarms will respond to the out-of-range Auto Cal as programmed.

MAIN MENU Setup?

MAIN MENU

Calibration?

CALIBRATION MENU

Auto Cal Parameters?

Press No or Right Arrow until Calibration? appears.

Press Yes to enter the Calibration menu.

Press Yes to enter the Auto Cal parameters option only if you have the proper equipment. See Note and WARNING above. Otherwise, press No or the Arrow keys to move to the next option on the Calibration menu.

Enable AutoCal: [YES] no

Press the No or the Arrow keys to select YES. Press Yes to

confirm.

Note: If you select NO and press Yes to confirm, Auto Cal will be

disabled and you will be immediately returned to the Calibration Menu.

The Auto Calibration menu consists of nine options: Set Time Interval, Set Zero Gas, Set Span Gas, Set Settling Time, Set Error Handling, Perform AutoCal, Zero AutoCal, View Drift Curve, and Done. These options allow the user to control all aspects of the Auto Cal operation. Selecting Done returns the TMO2D-TC to the Calibration menu. Refer to Appendix D, Menu Flow Diagrams, for a flow diagram of the Auto Calibration menu.

4-20 Programming

11/1/95

Set Time Interval

The Set Time Interval option is used to set the time interval between successive Auto Cal’s. This interval can be specified in either hours or days.

Hours can be entered fractionally (e.g., 90 minutes = 1.5 hours) up to a maximum of 24. An interval of 0 hours prevents Auto Cal from occurring.

If a non-zero number of days is entered, the TMO2D-TC will prompt for the time of day when Auto Cal should occur. Fractional days are not allowed. Days can range from 0 to 99.

!WARNING!

IF YOU PROGRAM THE TMO2D-TC TO PERFORM

AN AUTO CAL AT A CERTAIN TIME BUT THE

TMO2D-TC TIME IS INCORRECT DUE TO A POWER

LOSS, THE TMO2D-TC WILL PERFORM THE AUTO

CAL AT THE WRONG TIME. MAKE SURE THAT THE

TMO2D-TC TIME IS SET CORRECTLY

(SEE SETUP MENU).

For example, to set the time interval to 12 hours:

AUTO CALIBRATION MENU Set Time Interval?

Select AutoCal Interval:

[HOURS] days

Press Yes to select the Set Time Interval option.

Press the No or the Arrow keys to select HOURS. Press Yes to confirm.

Auto-Cal Interval Hours [XX.XX]: 12.00

Use the Data Entry keys to enter

12.00 (the X’s represent the previous entry). Press Yes to confirm the entry; then press Yes to exit.

AUTO CALIBRATION MENU Set Time Interval?

Press No to move to the next option on the Auto Calibration

menu.

For another example, to set the time interval to 3 days, to occur at 1:45 PM:

AUTO CALIBRATION MENU Set Time Interval?

Programming 4-21

Press Yes to select the Set Time Interval option.

11/1/95

Set Time Interval (cont.)

Select AutoCal Interval: hours [DAYS]

Auto-Cal Interval

Days [XX]: 3

AutoCal at Time:

HH.MM [XX.XX]: 13.45

AUTO CALIBRATION MENU Set Time Interval?

Press the No or the Arrow keys to select DAYS. Press Yes to

confirm. Use the Data Entry keys to enter 3 (the X’s represent the previous entry). Press Yes to confirm the

entry; then press Yes again to exit.

Use the Data Entry keys to enter

13.45 -1:45 PM in 24-hour notation (the X’s represent the previous entry). Press Yes to confirm the entry; then press Yes again to exit.

Press No to move to the next option on the Auto Calibration

menu.

4-22 Programming

11/1/95

Set Zero Gas

The Set Zero Gas option is used to enter the zero gas concentration and equilibration time. The default concentration is 0%. After entering the zero gas concentration, the TMO2D-TC will prompt for the equilibration time for the zero gas. The equilibration time should allow for the distance that the zero gas must travel from source to TMO2-TC Transmitter, the flow rate, and the equilibration time of the transmitter itself.

Note: For a successful Auto Cal to be performed, the equilibration

time should be a minimum of 3 minutes. The maximum equilibration time is 30 minutes. For testing purposes, the equilibration time can be as low as 10 seconds.

For example, to set the zero gas to 0% H 3 minutes:

AUTO CALIBRATION MENU Set Zero Gas?

Zero Gas %H2 [XX.XX]: 0.00

Press Yes to select the Set Zero Gas option.

Use the Data Entry keys to enter

0.00 (the X’s represent the previous entry). Press Yes to

confirm the entry; then press Yes again to exit.

Zero Gas ON for MM.SS [XX.XX]: 3

Use the Data Entry keys to enter 3 (the X’s represent the previous entry). Press Yes to confirm the entry; then press Yes again to exit.

AUTO CALIBRATION MENU Set Zero Gas?

Press No to move to the next option on the Auto Calibration

menu.

with a equilibration time of

Programming 4-23

11/1/95

Set Span Gas

The Set Span Gas option is used to enter the span gas concentration and equilibration time. The default concentration is 10.00%. After entering the span gas concentration, the TMO2D-TC will prompt for the equilibration time for the span gas. The equilibration time should allow for the distance that the span gas must travel from source to TMO2-TC Transmitter, the flow rate, and the equilibration time of the transmitter itself.

Note: For a successful Auto Cal to be performed, the equilibration

time should be a minimum of 3 minutes. The maximum equilibration time is 30 minutes. For testing purposes, the equilibration time can be as low as 10 seconds.

For example, to set the span gas to 100% H of 3 minutes:

AUTO CALIBRATION MENU Set Span Gas?

Span Gas %H2 [XX.XX]: 0.00

Press Yes to select the Set Span Gas option.

Use the Data Entry keys to enter

100.00 (the X’s represent the previous entry). Press Yes to

confirm the entry; then press Yes again to exit.

SpanGas ON for MM.SS [XX.XX]: 3

Use the Data Entry keys to enter 3 (the X’s represent the previous entry). Press Yes to confirm the entry; then press Yes again to exit.

AUTO CALIBRATION MENU Set Span Gas?

Press No to move to the next option on the Auto Calibration

menu.

with a equilibration time

Use the Data Entry keys to enter 100.0 (the X’s represent the previous entry). Press Yes to confirm the entry; then press Yes again to exit.

4-24 Programming

11/1/95

Set Settling Time

The Set Settling Time option is used to enter the amount of time the process gas should remain on before the TMO2D-TC resumes taking measurements. The settling time should allow for the distance that the process gas must travel from source to TMO2-TC Transmitter, the flow rate, and the settling time of the transmitter itself.

Note: For a successful Auto Cal to be performed, the settling time

should be a minimum of 3 minutes. The maximum settling time is 30 minutes. For testing purposes, the settling time can be as low as 10 seconds.

Note: The display, output, and alarms are not updated during the

settling period.

For example, to set the settling time to 3 minutes:

AUTO CALIBRATION MENU Set Settling Time?

Settling Time:

MM.SS [XX.XX]: 3

AUTO CALIBRATION MENU

Set Settling Time?

Press Yes to select the Set Settling Time option.

Use the Data Entry keys to enter 3 (the X’s represent the previous entry). Press Yes to confirm the

entry; then press Yes again to exit.

Press No to move to the next option on the Auto Calibration

menu.

Programming 4-25

11/1/95

Set Error Handling

The Set Error Handling option is used to program the LCD, output(s), and alarms to respond to any invalid measurement that occurs during Auto Cal. An invalid measurement would occur if the zero gas reading was 1 mA or less, or the span gas reading was 24 mA or greater, or either reading differed from the previous value by 1.6 mA or more. If an invalid measurement does occur during Auto Cal, it may be time to manually recalibrate the TMO2-TC Transmitter. See Chapter 5, Calibration, for details.

Note: Error handling for Auto Cal is independent of error handling

for an invalid H simultaneously, error handling for the invalid H

measurement. If both error conditions occur

measurement will take precedence.

Follow the steps below to enable Error Handling, set the LCD, and select the output and alarm responses:

AUTO CALIBRATION MENU Set Error Handling?

Enable Error Handling:

[YES] no

Press Yes to select the Set Error Handling option.

Press the No or the Arrow keys to select YES. Press Yes to confirm.

Note: If you select NO and press Yes to confirm, you will be

immediately returned to the Auto Calibration menu.

SYSTEM ERROR EFFECTS Set Display Response?

Display System Error?

yes [NO]

Press Yes to set the LCD response.

Press the No or the Arrow keys to select your choice. Press Yes to confirm.

Auto Cal ERROR EFFECTS Set Display Response?

Press No to move to the next option on the Auto Cal Error Effects menu.

Auto Cal ERROR EFFECTS Set Alarm Response?

Press Yes to set the alarm response.

4-26 Programming

Set Error Handling (cont.)

11/1/95

Select Alarm Effect? No Effect?

Select Alarm Effect?

Trip High?

Select Alarm Effect? Trip Low?

Select Alarm Effect? Trip Both?

AUTOCAL ERROR EFFECTS Set Alarm Response?

AUTOCAL ERROR EFFECTS

Set Recorder Response?

Select Recorder Effect?

No Effect?

Select Recorder Effect? Force High?

Use the No or Arrow keys to scroll through the choices. Press

Yes at your choice.

Press No to move to the next option on the Auto Cal Error

Effects menu. Press Yes to set the recorder output(s) response.

Use the No or Arrow keys to scroll through the choices. Press Yes at your choice.

Select Recorder Effect? Force Low?

Select Recorder Effect? Hold Last Value?

AUTOCAL ERROR EFFECTS

Set Recorder Response?

AUTOCAL ERROR EFFECTS

Done?

AUTO CALIBRATION MENU Set Error Handling?

Press No to move to the next option on the Auto Cal Error Effects menu. Press Yes to return to the Auto

Calibration menu.

Press No to move to the next option on the Auto Calibration

menu.

Programming 4-27

11/1/95

Perform AutoCal

The Perform AutoCal option is used to manually activate the Auto Cal procedure without waiting for the specified Auto Cal interval.

When an Auto Cal is performed, either by pressing Yes at the Perform AutoCal? prompt or when the specified time arrives, the following sequence occurs:

1. The top line of the LCD changes to “*Auto Cal in Progress*.” At this point the Process/Cal relay changes to the Cal state, and the Zero/Span relay changes to the Span state.

2. The bottom line of the LCD changes to “Span Gas is ON” and displays the equilibration time, which begins counting down to zero.

Note: The Auto Cal can be interrupted at this point by pressing No.

The LCD will prompt “Abort AutoCal?”. Press No to resume the countdown. Press Yes to return the LCD to the state it was in prior to the AutoCal.

3. When the equilibration time reaches zero, the LCD will read “Measuring ...” and count down the measurement cycles. At the end of the measurement, the Zero/Span relay changes to the Zero state.

4. The bottom line of the LCD changes to “Zero Gas is ON” and displays the equilibration time, which begins counting down to zero.

5. When the equilibration time reaches zero, the LCD reads “Measuring ...” and counts down the measurement cycles.

6. At the end of the measurement, the Process/Cal relay changes to the Process state and the LCD displays the settling time, which begins counting down to zero.

7. When the settling time reaches zero, the LCD reads “Working ...” as it performs the drift curve fitting functions.

4-28 Programming

11/1/95

Perform AutoCal

To set Auto Cal to begin automatically, refer to The Calibration Menu on page 4-19. To manually activate the Auto Cal procedure:

AUTO CALIBRATION MENU Perform AutoCal?

*Auto Cal in Progress*

Span Gas is ON XX.XX

*Auto Cal in Progress* Measuring ... XX

*Auto Cal in Progress* Zero Gas is ON XX.XX

*Auto Cal in Progress* Measuring ... XX

*Auto Cal in Progress*

Settling ... XX.XX

Working ...

AUTO CALIBRATION MENU Perform AutoCal?

Press Yes to activate Auto Cal.

The X’s represent the countdown for span gas equilibration time. When the countdown reaches

zero: The X’s represent the countdown

for span gas measuring time. When the countdown reaches zero:

The X’s represent the countdown for zero gas equilibration time.

When the countdown reaches zero:

The X’s represent the countdown for zero gas measuring time.

When the countdown reaches zero:

The X’s represent the countdown for process gas settling time. When the countdown reaches

zero: The TMO2D-TC applies the

Auto Cal results to the original calibration data, and creates a drift curve. It then returns to the prompt:

Press No to move to the next option on the Auto Calibration

menu.

Programming 4-29

11/1/95

Zero Autocal

The Zero AutoCal option is used to reset the Auto Cal drift curve to the original calibration data. This should be done after performing a manual calibration of the TMO2-TC Transmitter (see Chapter 5, Calibration).

AUTO CALIBRATION MENU Zero AutoCal?

Zero AutoCal?

[YES] no

Press Yes to select the Zero Autocal option.

Press the No or the Arrow keys to select YES. Press Yes to confirm.

Note: If you select NO and press Yes to confirm, you will be

immediately returned to the Auto Calibration menu.

Working ...

After the TMO2D-TC resets the Auto Cal drift curve, you will be

returned to the Auto Calibration menu.

AUTO CALIBRATION MENU

Zero AutoCal?

Press No to move to the next option on the Auto Calibration menu.

View Drift Curve

The View Drift Curve option is used to view the Auto Cal drift curve.

AUTO CALIBRATION MENU View Drift Curve?

Press Yes to view the drift curve.

Note: If the TMO2-TC Transmitter is uncalibrated, or if the

TMO2D-TC has not undergone Auto Cal previously (no calibration data has been previously entered), there will not be any points in the drift curve, and the LCD will display:

No Points in Curve. Press YES to proceed ...

Drift Values:

XX.XX %H2, XX.XX mA

Press Yes to return to the Auto Calibration Menu.

Press Yes to scroll through the drift curve values. After the last value, press Yes to exit.

AUTO CALIBRATION MENU

View Drift Curve?

Press No to move to the next option on the Auto Calibration Menu.

4-30 Programming

View Drift Curve (cont.)

11/1/95

AUTO CALIBRATION MENU Done?

CALIBRATION MENU

Auto Cal Parameters?

Press Yes to return to the Calibration menu.

Press No to move to the next option on the Calibration menu.

Programming 4-31

11/1/95

Edit Calibration Data

The Edit Calibration Data option is used to view or change calibration data entered at the factory or by the user in the field. It contains two options: Enable Compensation and Set System Response.

Enable Compensation is not applicable to the TMO2D-TC. It should always be disabled.

Set System Response is used to provide damped or normal response from the TMO2D-TC. Damped response is the natural response of the TMO2-TC Transmitter (see Chapter 6, Specifications). Normal response is software-enhanced response for faster performance under certain conditions. The System Response option should normally be set to damped. If you desire faster response, please consult the factory before switching to normal response.

Edit Calibration Data allows the user to view or change calibration (grid) data points entered at the factory or by the user during a field calibration. The TMO2D-TC uses the calibration data points, along with the drift curve calculated from the Auto Cal procedure (if you have the Auto Cal option), to compensate the raw signal received from the TMO2-TC Transmitter. If you want to check the calibration data points entered at the factory, refer to the TMO2D-TC Calibration Sheet supplied with your unit (see Appendix G for a sample TMO2DTC calibration sheet).

If the Calibration Sheet contains more than 2 data points, they have already been entered into the TMO2D-TC at the factory. You can generate new calibration data points in the field by using the TMO2D-TC in DVM mode (refer to Tests Menu/DVM Test on page 4-16), and by using the same gases and gas concentrations that were used during the factory calibration (refer to the TMO2D-TC Calibration Sheet supplied with your unit).

For example, to enter new calibration (grid) data points:

CALIBRATION MENU Edit Calibration Data?

Enable Compensation

yes [NO]

Set System Response: normal [DAMPED]

Press Yes.

Press No or the Arrow keys to select NO. Press Yes to confirm.

Press No or the Arrow keys to select DAMPED. Press Yes to confirm.

4-32 Programming

Edit Calibration Data (cont.)

11/1/95

CALIBRATION MENU

Enter Grid Data?

Press Yes only if you want to view or change the grid data

points. If you press No, you will see:

CALIBRATE

Done?

H2 GRID ENTRY

# of Points [X]:

Press Yes to return to the Calibration menu.

Use the Data Entry keys to enter the number of data points (the X represents the previous entry). Press Yes to confirm the entry.

Note: If X=0, the TMO2D-TC does not contain any grid data

points. You can also enter 0 here to nullify the existing data points already in memory. You would do this before calibrating the TMO2-TC Transmitter.

Note: If you only wish to view the grid data points, just press Yes

continuously until you are returned to:

CALIBRATION MENU

Enter Grid Data?

Press No and then Yes to return to the Calibration menu.

GRID ENTRY

# of Points [Y]:

Press Yes to exit (the Y represents the value you entered).

Point # 1

%H2 [XX.XX]:

Use the Data Entry keys to enter the % value for Point #1 (the X’s represent the previous entry). Press Yes to confirm the entry.

Note: The % gas concentrations must be in ascending order.

Point # 1 %H2 [YY.YY]:

Press Yes to exit (YY.YY represents the value you entered).

Programming 4-33

11/1/95

Edit Calibration Data (cont.)

Enter % gas concentrations for the remaining points in the same manner. When you are done, the TMO2D-TC will briefly display Working ..., followed by:

YY.YY %H

H2 mA [XX.XX]:

Use the Data Entry keys to enter the corresponding mA values for

the given % gas concentration (the X’s represent the previous entry). Press Yes to confirm the entry.

YY.YY %H

H2 mA [YY.YY]:

Press Yes to exit (YY.YY represents the value you entered).

Enter mA values for the remaining points in the same manner. When you are done, the TMO2D-TC will briefly display Working ..., followed by:

CALIBRATE Enter Grid Data?

CALIBRATE

Done?

Press No to move to the next option on the Calibrate menu.

Press Yes to return to the Calibration menu.

CALIBRATION MENU

Edit Calibration Data?

CALIBRATION MENU Done?

MAIN MENU Calibration?

MAIN MENU

Resume?

Press No to move to the next option on the Calibration menu.

Press Yes to return to the Main menu.

Press No to move to the next option on the Main menu.

Press Yes to return the TMO2DTC to Operate Mode, or No or the Arrow keys to continue in

Programming Mode.

4-34 Programming

Chapter 5

Calibration

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-1

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-1

Required Equipment and Materials . . . . . . . . . . . . . . . . . . . . . . . .5-3

Preparing the Transmitter for Calibration . . . . . . . . . . . . . . . . . . .5-4

2-Port (Sealed Reference Gas) Calibration . . . . . . . . . . . . . . . . . . 5-6

4-Port (Flowing Reference Gas) Calibration . . . . . . . . . . . . . . . . .5-8

Checking/Changing Switch and Jumper Settings . . . . . . . . . . . .5-9

May 2003

Overview This chapter provides information on calibrating the TMO2-TC

Transmitter in the field using zero, span, and reference gases. You will find the following topics discussed:

• Introduction — General considerations for calibration at the

factory and in the field. Also, information on how the TMO2D-TC “Edit Calibration Data” and “Auto Cal” routines enhance the TMO2-TC Transmitter calibration.

• Required Equipment and Materials — What you will need before

you begin calibrating.

• Preparing the Transmitter for Calibration — Getting the TMO2-

TC ready and locating the adjustment pots.

• 2-Port (Sealed Reference Gas) Calibration — How to calibrate the

2-Port version using zero and span gases.

• 4-Port (Flowing Reference Gas) Calibration — How to calibrate

the 4-Port version using zero, span, and reference gases.

• Checking/Changing Switch and Jumper Settings — Locating the

switches, along with a list of switch and jumper settings for various applications.

!WARNING!

TO ENSURE THE SAFE OPERATION OF THE

TMO2D-TC, YOU MUST INSTALL AND OPERATE IT

AS DESCRIBED IN THIS MANUAL. IN ADDITION, BE

SURE TO FOLLOW ALL APPLICABLE SAFETY CODES AND REGULATIONS FOR INSTALLING

ELECTRICAL EQUIPMENT IN YOUR AREA.

PROCEDURES SHOULD BE PERFORMED BY

TRAINED SERVICE PERSONNEL.

Introduction The TMO2-TC Transmitter was calibrated at GE Panametrics for the

range and gas mixture specified at the time of purchase. The following standard ranges and gases are provided:

0 to 1% 0 to 2% 0 to 5% 0 to 10% 0 to 25% 0 to 50% 0 to 100%

in N

CO2 in N2 (minimum range 0 to 5% CO2)

in Air (minimum range 0 to 5% CO2)

He in N He in Air

Calibration 5-1

11/1/95

Introduction (cont.) In addition, calibrations are performed for special ranges and gases.

When the TMO2-TC Transmitter was calibrated at the factory, the actual calibration data points (if there were more than two) were entered into the TMO2D-TC software to enhance the calibration. Calibration data points generated in the field can also be entered into the TMO2D-TC. Refer to Chapter 4, Programming, for details on “Edit Calibration Data”.

Factory calibration can be further enhanced by using the Auto Cal option. If you have the Auto Cal option with your TMO2D-TC Display (and the proper sample system), the TMO2D-TC will automatically calibrate itself with zero and span gases at a preset time interval. The TMO2D-TC uses the new calibration data to create a drift curve that compensates the original calibration data of the TMO2-TC Transmitter. Refer to Chapter 4, Programming, for details on Auto Cal Parameters.

When taking a reading, the TMO2D-TC uses the entered data points (Edit Calibration Data) and drift curve (Auto Cal Parameters) to modify the TMO2-TC Transmitter calibration data.

The TMO2D-TC without the Auto Cal option will need to be recalibrated every 2 to 6 months, depending on the application. The exact calibration interval will depend on such factors as components of the binary gas mixture, desired accuracy, range, and the cleanliness of the sample gas. Please refer to the discussion of sensitivity in "Checking/Changing Switch and Jumper Settings" on page 5-9.

If your TMO2D-TC has the Auto Cal option, but you are getting invalid measurements after running Auto Cal, or it has been a long time since the TMO2-TC Transmitter was calibrated, you will want to proceed with a manual calibration of the TMO2-TC Transmitter. If you decide to perform a manual calibration, make sure that you first reset your Auto Cal drift curve to the original calibration data and delete any data points entered into the TMO2D-TC. Refer to Chapter 4, Programming, and the “AutoCal Parameters” and “Edit Calibration Data” routines for details.

You can recalibrate the TMO2-TC for the same range and binary gas mixture as the previous calibration using just the zero and span adjustments. If you want to calibrate the TMO2-TC for a different range or for a different binary gas mixture, you must first check (and possibly change) several internal switches. See "Checking/Changing Switch and Jumper Settings" in this chapter.

Caution!

The calibration procedure described in this section

requires the use of specialized apparatus, and should

be performed only by properly trained personnel.

5-2 Calibration

11/1/95

Required Equipment and Materials

You will need the following equipment and materials:

• 3 1/2 digit multimeter

• Zero gas

• Span gas

• Reference gas (4-Port version - reference gas is usually the same as

span gas)

• Sample system or individual components (e.g., flow meter, needle

valve, pressure regulator) for connecting zero and span gases and controlling pressure and flow rates.

Note: The accuracy of the calibration will only be as good as the

accuracy of the zero and span gases used.

!WARNING!

IF YOU WILL BE WORKING IN A HAZARDOUS

AREA, FOLLOW THE APPROPRIATE GUIDELINES

BEFORE AND DURING CALIBRATION. AVOID

EXPLOSIVE GAS MIXTURES.

Calibration 5-3

11/1/95

Preparing the Transmitter for Calibration

Proceed with the following steps before connecting and adjusting the zero, span, and reference gases.

1. Allow 30 minutes after power is turned on for the TMO2-TC to reach temperature stability.

2. Loosen the set screw that locks the TMO2-TC cover in place, and unscrew the cover (see Figure 5-1 below).

Transmitter Cover

Set Screw

Figure 5-1: Transmitter Cover and Set Screw

5-4 Calibration

11/1/95

Preparing the Transmitter for Calibration (cont.)

3. You will see the TMO2-TC PCB #703-1095 located directly below the cover. Locate the adjustment pots R20 (Zero Adjustment) and R41 (Gain Adjustment) using Figure 5-2 below as a guide.

Note: This calibration procedure applies to PCB #703-1095 only. If

your TMO2-TC is equipped with PCB #703-1036 or PCB #703-867, refer to Appendix F, Calibration Procedure and

Adjustment Locations for Older Versions.

R41

Gain Adj.

R20

Zero Adj.

Figure 5-2: PCB 703-1095 Calibration

Potentiometer Locations

Calibration 5-5

11/1/95

2-Port (Sealed Reference Gas) Calibration

1. Connect the current lead of the multimeter to TB1, Pin 3, and the return lead to TB1, Pin 2. Note that TB1 can be unplugged from the PCB for easy connections. See Figure 5-3 below for the location of TB1.

Note: The current (mA) measurement cannot be made in parallel

with any other resistance. If another wire is connected to TB1, Pin 3, disconnect that wire prior to connecting the multimeter.

Connector TB1

Switch S1

Figure 5-3: TB1 and S1 Locations on PCB 703-1095

5-6 Calibration

11/1/95

2-Port (Sealed Reference Gas) Calibration (cont.)

2. Set the multimeter to read 0-20 mA.

3. Connect the TMO2-TC Sample Inlet to the zero gas via the Zero

Gas Inlet on the sample system or other gas control system.

4. Establish a flow of 0.5 SCFH (250 cc/min) of zero gas at 0.0 psig to the TMO2-TC.

5. Adjust R20 until the multimeter reads 4.00 mA ±0.08 mA. Allow 2-5 minutes for the reading to settle.

6. Connect the TMO2-TC Sample Inlet to the span gas via the Span Gas Inlet on the sample system or other gas control system.

7. Establish a flow of 0.5 SCFH (250 cc/min) of span gas at 0.0 psig to the TMO2-TC.

8. Adjust R41 (clockwise provides increased gain) until the multimeter reads 20.00 mA ±0.08 mA. Allow 2-5 minutes for the reading to settle.

Note: If R41 does not provide enough gain, you can adjust switch S1

(Coarse gain adjustment rotary switch) on PCB #703-1095 clockwise. See Figure 5-3 on the previous page for the location of S1.

9. Repeat Steps 3 through 8 until there is no change in settings. R20 and R41 are interdependent; adjustment of one pot will affect the set point of the other pot.

Calibration 5-7

11/1/95

4-Port (Flowing Reference Gas) Calibration

1. Connect the current lead of the multimeter to TB1, Pin 3, and the return lead to TB1, Pin 2. Note that TB1 can be unplugged from the PCB for easy connections. See Figure 5-3 on page 5-6 for the location of TB1.

Note: The current (mA) measurement cannot be made in parallel

with any other resistance. If another wire is connected to TB1, Pin 3, disconnect that wire prior to connecting the multimeter.

2. Set the multimeter to read 0-20 mA.

3. Connect the TMO2-TC Reference Inlet to the reference (span) gas

via the Reference Gas Inlet on the sample system or other gas control system.

4. Establish a flow of 0.5 SCFH (250 cc/min) of reference (span) gas at 0.0 psig to the TMO2-TC Reference Inlet. Note that you can establish a flow as low as 5 cc/min in order to conserve gas.

5. Connect the TMO2-TC Sample Inlet to the zero gas via the Zero Gas Inlet on the sample system or other gas control system.

6. Establish a flow of 0.5 SCFH (250 cc/min) of zero gas at 0.0 psig to the TMO2-TC Sample Inlet.

7. Adjust R20 until the multimeter reads 4.00 mA ±0.08 mA. Allow 2-5 minutes for the reading to settle.

8. Connect the TMO2-TC Sample Inlet to the span gas via the Span Gas Inlet on the sample system or other gas control system.

9. Establish a flow of 0.5 SCFH (250 cc/min) of span gas at 0.0 psig to the TMO2-TC Sample Inlet.

10.Adjust R41 (clockwise provides increased gain) until the multimeter reads 20.00 mA ±0.08 mA. Allow 2-5 minutes for the reading to settle.

Note: If R41 does not provide enough gain, you can adjust switch

S1 (coarse gain adjustment rotary switch) on PCB #703-1095 clockwise. See Figure 5-3 on page 5-6 for the location of S1.

11. Repeat Steps 5 through 10 until there is no change in settings. R20 and R41 are interdependent; adjustment of one pot will affect the set point of the other pot.

5-8 Calibration

May 2003

Checking/Changing Switch and Jumper Settings

The TMO2-TC PCB #703-1095 contains two switches, SA1 and S1, and one jumper, J3, which have been preset at the factory for your application (see Figure 5-4 below for location). PCB #703-1096, located below PCB #703-1095, contains two jumpers, labeled S1, which are also preset at the factory for your application (see Figure 5-5 on page 5-11 for location). If you are recalibrating the TMO2-TC for the same range and binary gas mixture as the previous calibration, you do not need to change the settings of these switches and jumpers. If you like, you can verify the settings of these switches and jumpers against the TMO2D-TC Calibration Sheet supplied by GE Panametrics at the time of purchase. A typical Calibration Sheet can be found in Appendix G, Sample TMO2D-TC Calibration Sheet. If you are changing the range or binary gas mixture, you may have to change switch and jumper settings before you calibrate for zero and span.

Jumper

Switch S1 Coarse Gain Adj.

Switch SA1

Figure 5-4: PCB 703-1095 Switch and Jumper Locations

Calibration 5-9

11/1/95

Checking/Changing Switch and Jumper Settings (cont.)

A brief description of SA1, S1 (on PCB # 703-1095), J3, and the S1 jumpers (on PCB #703-1096) follows:

SA1 Gain adjustment dip switch (PCB #703-1095)

SA1 serves as a coarse gain adjustment, and is preset at the factory according to your application. See Table 5-1 on page 5-12 for standard SA1 switch settings.

S1 Coarse gain adjustment rotary switch (PCB #703-1095)

S1 also serves as a coarse gain adjustment, and is set at the factory during the initial calibration. It is advanced if R41 does not provide enough gain. Note that position 0 is never used.

J3 Bridge voltage adjustment jumper (PCB #703-1095)

Jumper J3 is used to select between high or low bridge voltage, and is preset at the factory according to your application. Low voltage (LO) is used for most applications. High voltage (HI) is used for applications with a hydrogen or helium concentration of more than 90%. See Table 5-1 on page 5-12 for standard J3 jumper settings.

S1 Polarity adjustment jumpers (PCB #703-1096)

These jumpers are preset at the factory according to your application. They are set to “+” if the thermal conductivity of the gas being measured is greater than the thermal conductivity of the secondary gas (e.g., H

in CO2). They are

set to “-” if the thermal conductivity of the gas being measured is less than the thermal conductivity of the secondary gas (e.g., CO

in air). The jumpers do not normally

need to be checked or changed unless you are changing to or from a measured gas of CO

or SO2. See Table 5-1 on page

5-12 for standard S1 jumper settings.

Note: Do not confuse these jumpers with the coarse gain adjustment

rotary switch S1 on PCB # 703-1095.

5-10 Calibration

Checking/Changing Switch and Jumper Settings (cont.)

11/1/95

Polarity

Jumpers

Figure 5-5: PCB 703-1096 S1 Jumper Locations

Table 5-1 on the next page shows switch settings for SA1, J3, and the S1 jumpers (PCB 703-1096) for a variety of standard applications. If you do not see your range and/or binary gas mixture listed, please consult the factory.

Table 5-1 also classifies applications based upon Sensitivity Class: Ultra (U), High (H), Medium (M), and Low (L). Generally, as the applications range in sensitivity from Low to Ultra, the TMO2-TC bridge voltage differential decreases. For example, 0 to 100% H

(Low) might have 1,200 mV available, while 0 to 1% H2 in N2

(Ultra) might have only 12 mV available. If you are changing range or binary gas mixture and your new application is in a higher Sensitivity Class (e.g. Low - Ultra), you may have to calibrate the TMO2-TC more frequently in order to maintain its accuracy. Conversely, if you are changing from an Ultra to a Medium application, you may find that you can recalibrate less frequently.

Calibration 5-11

May 2003

Table 5-1: TMO2-TC Switch and Jumper Settings for Common Applications

Application

0 to 5000 PPM H

/He in N2 or

Switch SA1

1 2 3 4, 5, 6

Off Off Off Off + Ultra

S1 Pol.

(703-

1096) Sensitivity

Air

0 to 1% H

0 to 5% CO

0 to 10% CO

95 to 100% CO

0 to 5% SO

/He in N2 or Air +

in N2 or Air -

0 to 2% H2/He in N2 or Air Off Off On Off + High

0 to 15% CO 0 to 20% CO 0 to 30% CO

80 to 100% CO

0 to 10% SO

in N2 or Air -

(U)

(H)

0 to 5% H2/He in N2 or Air On On Off Off + Medium

0 to 10% H

90 to 100% H

95 to 100% H

0 to 20% SO 0 to 30% SO

/He in N2 or Air +

/He in N2 or Air Hi +

/He in N or Air Hi +

in N2 or Air -

(M)

0 to 15% H2/He in N2 or AirOnOnOnOff + Low 0 to 20% H 0 to 30% H

0 to 100% H

0 to 100% CO

20 to 50% in N

80 to 100% H

/He in N2 or Air +

/He in N2 or Air Hi +

in N2 or Air -

or Air +

/He in N2 or Air Hi +

(L)

!WARNING!

AVOID EXPLOSIVE GAS MIXTURES

5-12 Calibration

Chapter 6

Specifications

TMO2-TC Transmitter Specifications . . . . . . . . . . . . . . . . . . . . . . .6-1

TMO2D-TC Display Specifications . . . . . . . . . . . . . . . . . . . . . . . . .6-3

TMO2-TC Transmitter Specifications

Performance Accuracy:

±1% of span (with TMO2D-TC Display)

Linearity:

±1% of span (with TMO2D-TC Display)

Repeatability: ±0.2% of span (short term)

Stability:

Zero: ±0.5% of span per week Span: ±0.5% of span per week

Response Time:

20 seconds for 90% of step change

May 2003

Measurement Ranges (typical):

0 to 1% 0 to 2% 0 to 5% 0 to 10% 0 to 25% 0 to 50% 0 to 100% 80 to 100% 90 to 100%

Measurement Gases (typical):

in N

He in N2 or Air

in N2 or Air

in Air

Ambient Temperature Effect: ±0.05% of span per

Required Sample Flow Rate:

0.1 to 4.0 SCFH (50 to 2000 cc/min), 0.5 SCFH (250 cc/min) nominal

Sample Flow Rate Effect:

0.5% of span (for flow range of 0.1 to 4.0 SCFH (50 to 2,000 cc/min)

Specifications 6-1

11/1/95

Performance (cont.) Required Reference Flow Rate:

0.01 to 4.0 SCFH (5 to 2000 cc/min), 0.5 SCFH (250 cc/min) nominal

Line Voltage Effect:

0.02% of span (for normal variations)

Functional Analog Output:

4-20 mA, 600 ohm max.

Power:

24 VDC ±2 VDC, 1 amp max.

Cable:

10 ft. (3 m), 3-wire; lengths up to 2,800 ft. (850 m) available

Operating Temperature:

Standard:+55 Optional: +70

C (+131oF)

C (+158oF)

Ambient Temperature Range:

Standard:-10 to +50 Optional:-10 to +65

C (+14 to +122 oF)

C (+14 to +149 oF)

Physical Sensor Wetted Materials:

316 SS, glass, PVC, Viton (standard)

Dimensions:

Weatherproof Unit: 9.54" (H) x 5.70" (DIA) (242 x 145 mm) Explosion-proof Unit:10.48" (H) x 5.70" (DIA) (266 x 145 mm)

Weight:

9.5 lbs (4.3 kg)

Environmental:

Weatherproof: NEMA-4X; IP65 Explosion-proof:Class 1, Groups A, B, C and D, Div. 1;

Cenelec EEx d IIC T6 -ISSEP Cert. #90C.103.882

Accessories T(XX)N3 - 3-wire cable (XX specifies length).

Lengths up to 2,800 ft. (850 m) available.

6-2 Specifications

TMO2D-TC Display Specifications

Performance Accuracy:

±0.1% of span (electronics only)

Ambient Temperature Effect: ±0.01% of full scale per

Functional Analog Output:

Standard: Single, isolated 0/4-20 mA, 500 ohm max., field programmable Optional:Dual, isolated 0/4-20 mA, 500 ohm max., field programmable

Alarm Relays:

1 fault alarm and 2 programmable high/low alarms:

May 2003

2 Form C SPDT Relays Standard

Hermetically Sealed

2.5 A @ 240 VAC 3 A @ 115 VAC 0.3 A @ 115 VAC 3 A @ 30 VDC 2 A @ 28 VDC

Standard and hermetically-sealed designs are available for the high/ low alarms, set to trip at any level within the range of the instrument, programmable from the front panel. (The fault alarm is the same type as the high/low alarms.)

Note: To maintain Low Voltage Directive Compliance,

EN Standard EN61010, the following rating applies: 2 A @ 28 VDC.

Digital Output:

RS232C serial port

Display:

2-line x 24 character backlit LCD

Analog Input:

4 to 20 mA from TMO2-TC Transmitter

Power:

100/120/220/240 VAC ±10%, 50/60 Hz, 35 watts max., provides 24 VDC, 1 A max. to TMO2-TC Transmitter

Fuses:

110/120 VAC: 0.5 A, Slo-Blo. 220/240 VAC: 0.25 A, Slo-Blo.

Temperature:

Operating: 0 to +50 Storage:-20 to +70

Specifications 6-3

C (+32 to +122 oF)

C (-4 to +158 oF)

1/20/97

Physical Dimensions:

Rack Mount: 5.25" (H) x 19" (W) x 9.25" (D)

Bench Mount:5.25" (H) x 9" (W) x 9.25" (D)

Panel Mount:5.25" (H) x 9" (W) x 9.25" (D)

Weatherproof, fiberglass: 11.25" (H) x 9.38" (W) x 4.38" (D)

Weatherproof, stainless steel:Consult factory Explosion-proof: Consult factory

Weight:

Rack Mount: 5.4 lbs (2.4 kg) Bench Mount:7.4 lbs (3.4 kg) Panel Mount:4.7 lbs (2.1 kg) Weatherproof, fiberglass:6.5 lbs (3.0 kg) Weatherproof, stainless steel:Consult factory Explosion-proof: Consult factory

(133 x 483 x 235 mm)

(133 x 229 x 235 mm)

(286 x 238 x 111 mm)

Environmental:

Rack, Bench, Panel Mount:General-purpose Weatherproof, fiberglass:NEMA-4X; IP65 Weatherproof, stainless steel:Consult factory Explosion-proof:Consult factory

European Compliance:

This unit complies with EMC Directive 89/336/EEC and 73/23/EEC Low Voltage Directive. (Installation Category II, Pollution Degree II.)

6-4 Specifications

Chapter 7

Ordering Information

TMO2-TC Thermal Conductivity Transmitter

11/1/95

TMO2-TC

B- Measuring Cell Package (Requires 24 VDC, 1 A Power Supply)

1- Weatherproof enclosure, 2-Port (Sealed Reference Gas) 2- Explosion-proof enclosure, 2-Port (Sealed Reference Gas) 3- Weatherproof enclosure, 4-Port (Flowing Reference Gas)** 4- Explosion-proof enclosure, 4-Port (Flowing Reference Gas)** X- Without enclosure, 2-Port (Sealed Reference Gas) Y- Without enclosure, 4-Port (Flowing Reference Gas)**

C- Output*

2- 4 to 20 mA

D- Constant Operating Temperature

1- 55°C (131°F), standard, for -10 to 50°C (14 to 122°F) ambient 2- 70°C (158°F), for -10 to 65°C (14 to 149°F) ambient

*Refer to Calibration Specification below. Binary gas composition must total 100%.

**Suppressed-zero and some other special calibrations require the 4Port (Flowing Reference Gas) version.

Ordering Information 7-1

11/1/95

TMO2D-TC Display

A B C D E

B - Display Package

1) Rack Mount

2) Bench Mount

3) Panel Mount

4) Weatherproof fiberglass (NEMA 4X)

5) Explosion-proof*

6) Weatherproof, stainless steel, NEMA 4X/CE

C - Power

1) 100 VAC, 50/60 Hz

2) 120 VAC, 50/60 Hz

3) 220 VAC, 50/60 Hz

4) 240 VAC, 50/60 Hz

D - Output

1) Single, isolated 0/4-20 mA (standard)

2) Dual, isolated 0/4-20 mA

E - Alarm Relays

1) 2 alarm relays (standard)

2) 2 alarm relays, hermetically-sealed, for Class I, Div. 2

3) 4 alarm relays

4) 4 alarm relays, hermetically-sealed,

for Class I, Div. 2

*For delivery consult factory **Dual, automatic calibration relays (Auto Cal)

7-2 Ordering Information

TMO2-TC Calibration Specification

11/1/95

TC-CAL

B C

B- Cell Range

1- 0 to 1% 2- 0 to 2% 3- 0 to 5% 4- 0 to 10% 5- 0 to 25% 6- 0 to 50% 7- 0 to 100% 8- 90 to 100%* 9- 80 to 100%* S- Special*

C-Standard Gases

in N

1- H

2- CO2 in N2 (minimum range 0 to 5% CO2) 3- CO 4- He in N

in Air (minimum range 0 to 5% CO2)

5- He in air S- Special

Note: Binary gas composition must total 100%.

*Suppressed-zero and some other special calibrations require the 4Port (Flowing Reference Gas) version. Reference gas flow is the same as 100% span gas and can be as low as 10 cc/min.

Ordering Information 7-3

Ge TMO2D-TC User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

TMO2-TC Thermal Conductivity Transmitter with TMO2D

Chapter 1

Features and Capabilities

Overview This chapter will introduce you to the features and capabilities of the

Introduction The GE Panametrics TMO2D-TC is an analyzer that measures the

Theory of Operation The TMO2-TC Transmitter measures the concentration of a gas in a

Figure 1-1: Relative Thermal Conductivity of Several Common Gases

System Description The basic TMO2D-TC measurement system consists of a TMO2-TC

TMO2-TC Transmitter The TMO2-TC Transmitter is self-contained, consisting of the

Figure 1-2: 2-Port (Sealed Reference Gas) TMO2-TC

Figure 1-3: 4-Port (Flowing Reference Gas) TMO2-TC

Sample System A sample system is mandatory for use with the TMO2-TC. The

TMO2D-TC Display The TMO2D-TC Display receives a 4-20 mA signal from the TMO2-

Extra Cable (optional) GE Panametrics provides a 10 ft. (3 m) length of 3-wire, color-coded

Typical Applications The TMO2D-TC can be used in a wide variety of industrial

Chapter 2

Installation

Overview This chapter will describe how to mount and wire the TMO2-TC

Introduction Installation of the TMO2D-TC analyzer typically consists of five

Mounting the TMO2-TC Transmitter

Mounting the Sample System

Manual, 2-Port (Sealed Reference Gas) Sample System

Figure 2-1: Basic Sample System for a 2-Port TMO2-TC

Manual, 4-Port (Flowing Reference Gas) Sample System

Figure 2-2: Basic Sample System for a 4-Port TMO2-TC

Automatic, 2-Port (Sealed Reference Gas) Sample System

Wiring the TMO2-TC Transmitter

Figure 2-4: Location of Ground Screws

Figure 2-5: TMO2-TC Wiring Connections

Figure 2-6: TMO2D-TC Wiring Connections

Table 2-1: Cable Requirements

Table 2-2: Transmitter Power and Output Connections

Wiring the TMO2D-TC Display

Figure 2-7: RS232C Wiring Connections

Chapter 3

Operation

Overview This chapter provides information on operating the TMO2D-TC

Introduction The TMO2D-TC operation consists of only three steps:

Powering Up the TMO2D-TC Analyzer

Establishing a Flow of Sample Gas

Figure 3-1: TMO2D-TC Display and Keypad

LCD Display In Operate Mode, the left side of the top line of the LCD shows the

Keypad Except for the No key, which is used to enter Programming Mode, the

Chapter 4

Programming

Overview This chapter provides information on programming the TMO2D-TC

Introduction The TMO2D-TC Display contains an interactive, user-friendly

Key Functions When the TMO2D-TC is in Operate Mode, it will ignore all keys

Entering Programming Mode

Menu Navigation When a menu item is being displayed, the first line of the LCD shows

The Main Menu The Main menu consists of six submenus: Setup, Recorders, Alarms,

The Setup Menu The Setup menu consists of seven options: Set Time, Set Date, Set

The Recorders Menu The Recorders menu is used to scale the 0/4-20 mA analog output(s).

The Alarms Menu The TMO2D-TC is provided with two single-pole double throw

The Tests Menu The Tests menu consists of four options: DVM Test, Recorder

The Calibration Menu The Calibration menu consists of three options: Auto Cal Parameters,

Chapter 5

Calibration

Overview This chapter provides information on calibrating the TMO2-TC

Introduction The TMO2-TC Transmitter was calibrated at GE Panametrics for the

Required Equipment and Materials

Preparing the Transmitter for Calibration

Figure 5-1: Transmitter Cover and Set Screw

2-Port (Sealed Reference Gas) Calibration

Figure 5-3: TB1 and S1 Locations on PCB 703-1095

4-Port (Flowing Reference Gas) Calibration

Checking/Changing Switch and Jumper Settings

Figure 5-4: PCB 703-1095 Switch and Jumper Locations

Figure 5-5: PCB 703-1096 S1 Jumper Locations

Table 5-1: TMO2-TC Switch and Jumper Settings for Common Applications

Chapter 6

Specifications

TMO2-TC Transmitter Specifications

Performance Accuracy:

Functional Analog Output:

Physical Sensor Wetted Materials: