TSI Instruments 4000 Series User Manual

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P Requests a pressure setting (replace with a lower case ‘x’ if a
pressure reading is not required). Pressure data is returned in
units of kPa. This is the pressure set for compensation.
Default value is 101.32 kPa.
nnnn Denotes maximum number of samples to return, range is 1 to
1000. (‘0500’ denotes 500 readings, leading zeros must be
included.)
Example 1) DAFxP0250 Request 250 readings of flow and
pressure data in comma delimited ASCII
format.
Example 2) DBxTx1000 Request 1000 readings of temperature in
binary format.
Example 3) DCFxx0500 Request 500 readings of flow in comma /
<CR> delimited ASCII format.
Before initiating this command, the sample interval, gas calibration,
and flow units should be set using the SSRnnnn, SGn, and SUs
commands.
The data can be returned in two different ASCII modes or in binary.

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