Technologies LLC

A diesel opacity emissions meter manufacturer

Connect With Us

Contact Us Today

Main Office:

(562) 698-2444


On Line RMA (Repair Service Form)

2022: Running Average service time less than 8 business hours


Procedure to set New California Opacity Limits on the BT2000 Wireless Smoke Opacity Meter (starting July 1,2019)

Opacity Limit can be Easily Set on the BT2000 from 5% (2007 MY) to 40% (Pre-1991 MY) for an Accurate "Final Result:" on the Printout

  1. Press F1: Goto to SAEJ1667 Test Menu
  2. Press F4: Goto to Set Maximum Opacity Level Menu (Turn off Auto Mode)
  3. Press F2 and F3: To set the Maximum Opacity Limit (Then Exit)
BT2000 Wireless setting new Opacity Limits

Procedure to upgrade the BT2000 Sensor Battery

The new and imporoved sensor battery has 50% more capacity and is part of Beryl's continuous product improvement program to help improve customer experience

Tools Needed: 1/8 inch Allen hex head and small Phillips head screwdriver

  1. Watch BT2000 Sensor Battery Upgade Video below
  2. Remove both 10-32 flathead screws; both 2-56 flathead phillips screws; and the battery cover
  3. Use a blunt object to pull out the old sensor battery (be careful not to tear or puncture the battery)
  4. Connect the new sensor battery
  5. Feed the connector and wire into the left side of the battery opening
  6. Replace the flathead 10-32 screw on the left side, then on the right side
  7. Replace the battery cover and secure it with two 2-56 flat head Phillips screws

BTLink Software Demonstration video

The BTLink software allow the user to download smoke tests stored on the BT2000 to be downloaded onto the PC


BT2000 Smoke meters Brochure

BT2000 Wireless Smoke meter Brochure

Information Links

For more information, links are provided below:


What is CCDET (on Diesel Education and Technology)?

Frequently Asked Questions

Q1: How many times does the BT2000 smoke meter needs to be calibrated?
A1: Once a year,  latest version of software will start to remind user approximately one month before calibration is due.

Q2: Where do I send my BT2000 smoke meter for calibration and what do I send?
A2: Send the BT2000 smoke meter (meter, sensor, and printer in compact carrying case) to Attn: RMA 1640 E Edinger Ave Unit L, Santa Ana, CA 92705 with fill out repair service form (RMA) located above.

Q3: How much does it cost and how long will it take to do the calibration?
A3: Typically done by next business day: standard charge (approx $225)
for walk-in, 2-3 hours: (standard charge + rush, by appointment only)

Note: All meters need to be calibrated per manufacture recommendations, either by calibrating the meter or re-measuring the calibration filters (with proof filter is calibrated).

Q4: How many people are needed to use your device and conduct the test on a vehicle?
A4: Typically one person is required to conduct smoke tests on regular cab trucks RVs, buses, box trucks and etc with few exceptions, if the distance between the tail pipe and the steering wheel is greater than 23 ft. and less than 100 ft.

Q5: Does the meter have a GPS?
A5: The meter does not have a built in GPS. Latitude, Longitude, and Altitude can be entered manually in test site menu.

Q6: BT2000 Wireless sensor status light is flashing red what does the mean?
A6: This typical means that the sensor battery is low. Either recharge the battery or replace with fully charged battery.

Q7: How does ambient conditions effect SAE J1667 smoke results?
A7: If smoke meter ambient correction is turn off, then smoke results are not adjusted. If ambient correction are turn on, then then the smoke results are adjusted using the SAE J1667 Appendix B reference dry air density. The smoke meter has built in humidity, temperature, and pressure sensor to calculate ambient correction.

Note a few artifacts of the ambient correction equation: Extreme humidity variation has a minor effect on the resulting smoke adjustment. Extreme temperature has a bigger effect on smoke adjustment. Extreme pressure/altitude changes has a big effect on smoke adjustment.

Note: In extreme ambient condition, the ambient equations in SAE J1667 Appendix B may not be accurate (as stated in the SAE J1667).

Q8: In California, if the vehicle is subject to Periodic Smoke Inspection Program (PSIP) and/or Heavy-Duty Vehicle Inspection Program (HDVIP), when do they need to start being smoke opacity tested?
A8: In California, those vehicles 2011 and older needs to be smoke opacity tested before the end of 2015. In California, the opacity cut point for 1991 new truck is 40% and for trucks older 1990 the opacity cut point is 55%.  If you have any questions or doubts, about when to start opacity testing your vehicles or the opacity cut points, please contact the ARB.

Q9: How do I clean the wireless sensor windows?
A9: Cleaning the wireless sensor windows is quick and simple. First, slide open the both trap doors on the top of the sensor head. Second, wipe each sensor windows with a clean dry cotton swab. Third, slide close both trap doors on the top of the sensor head. Do not use any liquids or alcohols or window cleaner on the cotton swabs or sensor windows.

Q10: Can I test my own vehicles in California?
A10: The short answer is YES. You Need to take CARB Air Quality Training class MS 529, which consists of a presentation and a brief exam. To take the course, sign up for an ARB account and register for the course. You will get a certificate to test your vehicles if you pass the exam.

Q11: How do I know when the Sensor Ver 2.2 battery is fully charged?
A11: When charging the sensor version 2.2, the Amber charging indicator will light up.
If the battery needs charging, the charging indicator will change to a Green/Amber color.
 When the battery charging is complete, the indicator will switch back to Amber.

Q12: Where can I find pdf version of RMA Sheet?
A12: Repair Service Form (RMA)

Registered Customer Support

Registered Test Data Upload Area

Designed and Made in the USA