TSI Instruments 4000 Series User Manual

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xx = AZ Read analog zero intercept (returns –100 to 100)
xx = BT Read begin-trigger value (returns xxnnn.nn).
xx = ET Read end-trigger value (returns xxnnn.nn).
xx = G Read gas calibration (returns 0 to 6).
xx = P Read the current pressure setting (returns 0 to 200)
xx = SR Read rate (returns 0 to 1000).
xx = U Read flow units (returns S or V).
Returns current values in ASCII format. Leading zeroes are not
returned.
After the command is processed, an acknowledge sequence of “OK”
<CR> <LF> is sent followed by the data and by the termination
sequence <CR> <LF>. If the command generated an error instead of
“OK” <CR> <LF> being sent, an error code of “ERRn” <CR> <LF> will
be sent. See the end of this section for a list of possible error codes.
Example 1) RU Read flow units. Returns “OK” <CR> <LF> “S”
<CR> <LF>

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