TSI Instruments 4000 Series User Manual

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?
This is a ping command used to tell if the flowmeter is
communicating. The flowmeter will return an acknowledge sequence
of “OK” <CR> <LF> as a response.
Example 1) ? Returns “OK” <CR> <LF>
Error Codes
1 Unrecognizable command – The flowmeter uses the length
of the command and the first few letters (how many letters
depends on the command) to recognize a valid command.
2 Number out of range – The number entered as the operand
to a command was out of the specified range or
unrecognizable.
3 Invalid mode – One or more requested options to a
command were invalid.
4 Command not possible – The supplied operands describe a
command that is beyond the functional capability of the
flowmeter.
8 Internal error – An internal failure was detected.

TSI Instruments 4000 Series Specifications

General

Measurement Parameters	Velocity, Temperature
Data Storage	10, 000 data points
Accuracy	±0.015 m/s or ±1% of reading
Particle Size Range	Not applicable
Display	LCD
Operating Humidity	0 to 95% RH (non-condensing)

Summary

Chapter 1 - Models and Accessories

Model Designations

Details specific model numbers, gas calibration, flow range, and adapter types.

Chapter 2 - Measurements Available

Flow Rate Measurement

Explains how flow rate data is obtained via analog or serial interfaces.

Chapter 4 - Design Considerations, Mechanical

Important Safety Notes

Covers hydrogen safety and intrinsic safety aspects of the flowmeters.

Filtration Requirements

Chapter 5 - Design Considerations, Electrical

Power Requirements

Specifies voltage, current, and connection type for the flowmeter's power supply.

Output Signal, Analog

Describes the default analog output voltage range for mass flow measurement.

Chapter 7 - Specifications

Flow Measurement

Details measurement ranges and accuracy for different models and gases.

Accuracy (continued)

Provides accuracy specifications for Nitrogen and Nitrous Oxide gases.

Appendix C - Digital Serial Interface

Command Set Summary

Overview of data format, buffering, and command structure for serial communication.

Commands for Flow Rate, Volume, and Temperature Measurement

Details commands for acquiring flow rate, volume, and temperature measurement data.

Measurement Setup Commands

Setup Commands for Analog Output