MDL-40 SERIES · FIELD METER
One meter.
Three build tiers.
The MDL-40 measures the same six channels at every tier — what changes is battery life, sample rate, and how much abuse the housing takes. Pick the tier that matches the job, not the other way around.
±0.2%accuracy, all tiers
IP67minimum rating
6channels measured
3 yrcalibration interval
Compare tiers
Field is the base build. Pro adds sample rate and battery life for daily field use. Summit is rated for continuous unattended logging.
| Spec | Field | Pro | Summit |
|---|---|---|---|
| Price | $420 | $680 | $1,240 |
| Sample rate | 1 Hz | 10 Hz | 100 Hz |
| Battery life | 18 hrs | 40 hrs | 200 hrs |
| Onboard storage | None (live only) | 4 GB / 30 days | 64 GB / 1 year |
| Housing rating | IP67 | IP67 | IP68, MIL-STD-810H |
| Connectivity | USB-C | USB-C, Bluetooth | USB-C, Bluetooth, LoRa |
| Display | Numeric LCD | Graphing LCD | Graphing LCD, backlit |
| Warranty | 2 years | 3 years | 5 years |
Field Pro · most common Summit
Every unit ships calibrated
Each MDL-40 is bench-calibrated against a NIST-traceable reference before it leaves the shop, with the certificate included in the box.