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DTEX 1000G/L  ver.05132020

Section 1:  First Things To Know About The 

DTEX

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Operation Specifications

Maximum Operating Pressure:  5 psig 

 

(0.345 Bar (g)

Minimum Operating Pressure:  5” water column

 

Operating Temp Range: 

*0 to 140 degrees F.

 

(17°C to 60°C)

Power Supply: 

12VDC Internal    

 

Rechargable Battery

NOTE: 

*If Battery charge is less tha 50%, recharge battery for 

a minimum of 24 hours before use.

CAUTION:

The DTEX system is designed to evaluate odor inten-

sity in gas streams. Because of the potentially haz-

ardous nature of conditions and elements involved in 

conducting tests, users are reminded to use extreme 

caution while operating the DTEX system. The system 

operated improperly or past due calibration could cre-

ate a dangerous situation to both persons or property 

as well as produce inaccurate test results. *Refer to 

D6273-98 ASTM Standard Test Methods for  Gas 

Odor Intensity for guidance regarding precautions, 

hazards and procedures.

Introduction

Congratulations on your purchase of the DTEX 

DX 1000G/L odorant detection system. You’ve 

made a wise investment for your company.

DTEX is a small, handheld instrument, which 

assists the user in determining the odorant 

intensity of Natural Gas/LPG with menu-driven, 

step-by-step instructions.  After connecting to 

the sample point, sniff test completion times 

typically run 2 to 3 minutes. The DTEX system 

displays the actual air/gas percentage, pres-

ent in the device, thus eliminating the need for 

flow tubes and cross-reference charts. With an 

on-board database of 50 test locations, DTEX 

can record multiple tests for each test location, 

including 

Threshold Detection Level (TDL)

 and 

Readily Detectable Level (RDL)

 readings and

 

test notes, such as odor intensity ratings, weath-

er conditions, etc. Then, DTEX goes one-step 

further by storing up to 75 complete test results 

electronically. Back at the office the test results 

can be individually reviewed or downloaded into 

a PC. It’s that simple.

Other important features of the DTEX system 

are:

 

•Intrinsically safe for hazardous locations  

 

Class 1, Division I, Groups C&D

 

•Low power circuitry

 

•Rechargeable battery

 

•Rugged enclosure

 

•Completely portable

 

•Ergonomically designed for compatible  

 

  operator  interface

 

•Odorant level detection reports are no  

 

  longer manually written

 

This Manual Covers both versions, Natural Gas 

and LPG. Applies to DTEX 1000 G and L.

Summary of Contents for DTEX DX1000G/L

Page 1: ......

Page 2: ......

Page 3: ...Dual Process DTEX Instruction Operating Manual Version 05132020...

Page 4: ......

Page 5: ...onnections 7 Section 3 System Control Electronics 9 Display and Keypad 9 Special Keys 10 Section 4 Preparing Your DTEX for a Test 13 System Configuration 13 Section 5 Programming For Odor Concentratio...

Page 6: ...YZ Systems 8825 N Sam Houston Pkwy West Houston Texas USA 77064 P 281 362 6500 F 281 362 6513 Page VI DX1000G L ver 05132020...

Page 7: ...is how the text will appear throughout the manual Items that require action for example the pressing of a key for programming the controller will feature the action item in sentence case Bold Text fol...

Page 8: ...ion system You ve made a wise investment for your company DTEX is a small handheld instrument which assists the user in determining the odorant intensity of Natural Gas LPG with menu driven step by st...

Page 9: ...n Level TDL Read ily Detectable Level RDL or of Desired Gas Concentration in Air The gas then passes through the electronic mass flow sensor and on to the mixing chamber where it is mixed with intake...

Page 10: ...Page 4 DTEX 1000G L ver 05132020 Section 1 First Things To Know About The DTEX YZ Systems 8825 N Sam Houston Pkwy West Houston Texas USA 77064 P 281 362 6500 F 281 362 6513 Notes...

Page 11: ...on Pkwy West Houston Texas USA 77064 P 281 362 6500 F 281 362 6513 Page 5 DX1000G L ver 05132020 Section 2 System Installation Standard System Components The primary components of the DTEX DX 1000G L...

Page 12: ...5 N Sam Houston Pkwy West Houston Texas USA 77064 P 281 362 6500 F 281 362 6513 Page 6 DX1000G L ver 05132020 Section 2 System Installation System Flow Schematic Illustrated below are the major intern...

Page 13: ...YZ Systems 8825 N Sam Houston Pkwy West Houston Texas USA 77064 P 281 362 6500 F 281 362 6513 Page 7 DX1000G L ver 05132020 Section 2 System Installation Standard System Connections...

Page 14: ...YZ Systems 8825 N Sam Houston Pkwy West Houston Texas USA 77064 P 281 362 6500 F 281 362 6513 Page 8 DX1000G L ver 05132020 Section 2 System Installation Notes...

Page 15: ...YZ Systems 8825 N Sam Houston Pkwy West Houston Texas USA 77064 P 281 362 6500 F 281 362 6513 Page 9 DX 1000G L ver 05132020 Section 3 System Control Electronics System Electronics Display and Keypad...

Page 16: ...the event of a technical service or support inquiry to the factory or for customer records Use the arrow keys to view all available information The following information is displayed Model No Version...

Page 17: ...he details key allows for review of all information relative to the test previously selected by the review key Use the arrow keys to view all available infor mation The following information will be d...

Page 18: ...YZ Systems 8825 N Sam Houston Pkwy West Houston Texas USA 77064 P 281 362 6500 F 281 362 6513 Page 12 DX 1000G L ver 05132020 Section 3 System Control Electronics Notes...

Page 19: ...ng less user and location data input each time a test is conducted The following items can be uploaded into the system using reporter software User names User personal identification numbers PIN Test...

Page 20: ...n the immedi ate area Should the user detect or suspect a leak prior to or during a test immediately shut off the source isola tion valve and seek the cause Avoid conducting tests in closed or confine...

Page 21: ...ay the following Checking Hardware automatic system hardware check prior to a test Step 3 Press Enter to skip the purge cycle if de sired to review data repeat a test etc Press P to purge the unit bef...

Page 22: ...Enter key on the keypad to begin data configuration for a test Step 5 Set User by using the arrow keys select the user name and press Enter Proceed to Step 6 If the correct name is not present select...

Page 23: ...by typing in user 2 digit personal identification number and press Enter The main display will now be present Step 7 Press the Test button on the keypad Step 8 Set location using the arrow keys select...

Page 24: ...t New Item and press Enter New City type in the name of the New City and press Enter Set State Province using the arrow keys select the state and press Enter If the correct State Province is not liste...

Page 25: ...ys and press Enter Set to nearest 500 feet Step 10 Verify Data verify that all data entered for test location is correct by using arrow keys to scroll through data Press Enter to continue Step 11 Is D...

Page 26: ...alve and sniff getting breaths of fresh air between sniffs Contin ue the procedure until the first hint of a new odor is detected This is the threshold detection level Threshold as used here is the mi...

Page 27: ...Section 5 Programming for Odor Concentration Operation Conducting An Odor Concentration Test cont Step 16 Test Complete Close valve and press Enter Step 17 Add Any Notes type in any supplemental data...

Page 28: ...ithout venting To be used after data review or data entry when no gas source connection has been made V TO VENT UNIT vent the system before shut down Recommended after each test to prevent undue satur...

Page 29: ...he following Checking Hardware automatic system hardware check prior to a test Step 3 Press Enter to skip the purge cycle if de sired to review data repeat a test etc Press P to purge the unit before...

Page 30: ...er key on the keypad to begin data configuration for a test Step 5 Set User by using the arrow keys select the user name and press Enter Proceed to Step 6 If the correct name is not present select Add...

Page 31: ...yping in user 2 digit personal identification number and press Enter The main display will now be present Step 7 Press the Test button on the keypad Step 8 Set location using the arrow keys select the...

Page 32: ...w Item and press Enter New City type in the name of the New City and press Enter Set State Province using the arrow keys select the state and press Enter If the correct State Province is not listed se...

Page 33: ...nd press Enter Set to nearest 500 feet Step 10 Verify Data verify that all data entered for test location is correct by using arrow keys to scroll through data Press Enter to continue Step 11 Is Data...

Page 34: ...l the first hint of a new odor is detected This is the threshold detection level Threshold as used here is the minimum Intensity of a gas in air when one detects a new or different odor above the back...

Page 35: ...eration Conducting An Odor Intensity Test cont Step 17 Test Complete Close valve and press Enter Step 18 Enter Intensity Rating Notes Typical ratings are 1 absent 2 barely detectable 3 RDL readily det...

Page 36: ...ut venting To be used after data review or data entry when no gas source connection has been made V TO VENT UNIT vent the system before shut down Recommended after each test to prevent undue saturatio...

Page 37: ...not expose the unit to debris Damage Will Result Keep lid closed and gas inlet capped when not in use Keep air intake and sniff chamber clean 4 Clean the unit with a damp cloth Avoid cleaners which c...

Page 38: ...ation and inspection of the DTEX system is required at least once every two years Annual re calibration is available if required by local P U C Company Policy etc The unit displays the next sched uled...

Page 39: ......

Page 40: ...ther expressed or implied including but not limited to implied warranties or merchantability and fitness for a particular purpose with respect to the product This limited warranty gives you specific l...

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