PX309 Pressure Transmitter
General-purpose 4-20 mA pressure transmitter.

USB logger for recording discrete events, contact state changes and count events.
The EL-USB-5+ is a standalone data logger that can record over 1,000,000 events, state changes and count events. It supports fast logging rates — event capture up to 4 times per second, state changes up to 2 times per second, and event counting up to 100 times per second (with LEDs off). The logger is supplied with a cap featuring two screw terminals and measurement leads terminating in crocodile clips, and connects to volt-free contacts with rising or falling edge triggering. Data is retrieved via USB and analyzed in the free EasyLog software, with graphing, printing and export support.
Two screw-terminal inputs monitor a volt-free contact or digital signal. Depending on the configured mode, the logger records the timestamp of each discrete event, tracks ON/OFF state duration, or increments a running count each time the input triggers — supporting rising-edge, falling-edge, or both-edge triggering to match the monitored equipment's signal behavior.
| Max Event/State Change Frequency | 2 Hz |
|---|---|
| Max Count Frequency | 100 Hz |
| Minimum Time in State | 100 ms |
| Readings Stored | 1,000,000+ |
| Input Voltage | 3 to 28 V d.c. |
|---|---|
| Triggering | Rising and falling edge |
| Connection | Volt-free contact, 2 screw terminals |
| Battery Life | 1 year |
|---|---|
| Battery Type | 1/2 AA (supplied) |
All Tetracon-supplied instruments carry the original manufacturer warranty (typically 12–24 months) plus first-line local support from our Islamabad service centre.
Yes. Our manufacturer-trained engineers offer on-site installation, commissioning and startup training anywhere in Pakistan.
Common spares are held in local stock. Calibration is available at our lab or on-site with NIST-traceable reference standards.
Stocked items ship within 3–5 working days; engineered configurations typically 6–10 weeks depending on manufacturer schedule.
Complete the form below and one of our engineers will respond within 1 working day with pricing and lead time. Prefer email? Contact our sales team.