MDT
Pulse Metering Data Transceiver
Standard, MAX, and LoRaWAN Systems
Product Overview
The Tehama Pulse MDT records data from meters that generate a pulse output and transmits the totalizer count via radio towards the DCAP/Gateway. It is compatible with nearly all water, gas and electric utility meters that use a reed switch or a piezoelectric pulse generator.
Our Pulse MDT is available in three radio technologies, our original Standard Range, our MAX Range, and now LoRaWAN. Standard is our original system which we continue to fully support and maintain. MAX is based on LoRa technology but designed to use Repeaters. LoRaWAN uses the international standard for IoT-type radios. All MDTs are powered by two inexpensive field-replaceable AA batteries.
The Pulse MDT is also available with either a single pulse input for single meter usage or dual pulse inputs for co-located hot and cold water meters or other two-meter combinations. A Top-of-the-hour synchronized Time-of-Use (ToU) model with 15-minute interval data is also available.
Other variations and features are available such as:
- Submersible version for pit or outdoor installation (see Submersible Data sheet)
- Integrated Remote Display, California approved (See Display MDT Data sheet)
Specifications
| Input | Pulse signal from water, electric, gas, run-time, or BTU meters |
| MDT Data Storage | -P/PP Pulse units: no local storage -PT Time-of-Use units: Over 2300 data pts. (24+ days @ 15 min interval) |
| Data Resolution | -P/PP Pulse units: 1-hour interval -PT Time-of-Use units: 15-minute interval, Top of the Hour synchronized |
| Max Pulse Rate | 20 pulses per second, 25 mS minimum pulse width |
| Radio | 902 – 928 MHz; FCC and IC Certified for all modes Standard: Open field range of one mile MAX/LoRaWAN: Open field range approaching 10 miles |
| LED | Indicates on/off and RF network connection status. From button press: Solid Green: good Link Quality Solid Amber: OK Link Quality Red or Flashing: poor Link Quality or syncing to Network |
| Operating Environment | -20 to 145 °F, up to 90 % RH, non-condensing |
| Power | Two replaceable AA batteries, up to eight years life under normal conditions |
| Typical Battery Life | 6-8 years @ 50 to 90 °F, reduced at temperature extremes |
| Dimensions | 4.3" × 2.2" × 1.2" |
| Warranty | Five years. For more detailed information, please visit our warranty page. Note that the warranty does not cover batteries. |
Continual product enhancements may cause specifications to change without notice.
*Actual range may vary depending on installation location and topography
Models
| Standard System | Model Number | Description |
|---|---|---|
| Single Pulse MDT | TW-160B-P | Single pulse input counter, one-hour interval data, no on-board memory |
| Dual Pulse MDT | TW-160B-PP | Dual pulse input counter, one-hour interval data, no on-board memory |
| Single Pulse MDT, Time-of-Use enabled | TW-160B-PT | Single Pulse input, 15-minute guaranteed (*) Time-of-Use interval data with on-board data memory. Readings are synchronized to the top of the hour for accurate billing. |
| MAX System | Model Number | Description |
| Single Pulse MDT | TW-170B-P | Single pulse input counter, one-hour interval data, no on-board memory |
| Dual Pulse MDT | TW-170B-PP | Dual pulse input counter, one-hour interval data, no on-board memory |
| Single Pulse MDT, Time-of-Use enabled | TW-170B-PT | Single Pulse input, 15-minute guaranteed (*) Time-of-Use interval data with on-board data memory. Readings are synchronized to the top of the hour for accurate billing. |
| LoRaWAN System | Model Number | Description |
| Single Pulse MDT | TW-180B-P | Single pulse input counter, one-hour interval data, no on-board memory |
| Dual Pulse MDT | TW-180B-PP | Dual pulse input counter, one-hour interval data, no on-board memory |
| Single Pulse MDT, Time-of-Use enabled | TW-180B-PT | Single Pulse input, 15-minute guaranteed (*/**) Time-of-Use interval data with on-board data memory. Readings are synchronized to the top of the hour for accurate billing. |
*: Adequate Repeater/Gateway coverage is required for guaranteed delivery.
** Extra cloud storage fees required.
Other combinations and sensor inputs are available by special order. Please contact Tehama for details.
Note: Standard, MAX, and LoRaWAN products are NOT compatible with each other. MAX MDTs must be used with MAX Repeaters and DCAPs; likewise for Standard. LoRaWAN uses Gateways.
Refer to AN-119 for more information. Also available in the Support/Documents section of our website.