Specifications
Typical values from the datasheet; accuracy applies under the datasheet's reference conditions. Where a value depends on the application it is specified per project and fixed in the order confirmation.
| measures | density · pressure · temperature · humidity |
| gases | SF₆ · N₂ · CF₄ · O₂ · CO₂ · Novec™ 4710 · He · Ar · mixtures |
| accuracy | ±0.2 % URL pressure/density · ±0.2 °C · ±5 % RH |
| ranges | 0.6 / 1.2 / 1.6 / 2.2 MPa abs · 3-year calibration interval |
| interface | RS-485 Modbus RTU · LCD opt. · M12 / cable |
| build | IP68 · ≤30×125 mm · ≤0.5 kg · −60…+85 °C |
Downloads
Open links — no form.
| Document | File | Type |
|---|---|---|
| Datasheet | tremon-dm91-datasheet.pdf | PDF · 7 MB |
| Calibration certificate (sample) | on request — issued per unit | |
| Modbus register map | on request |
Applications and the rule behind each
- GIS / MV switchgear density monitoring with automatic alert (F-gas Art. 5 exemption)
- Retrofit on legacy SF₆ fleet that stays in service after the phase-in bans
- Alternative gas mixtures (C₄F₇N/CO₂, CF₄/SF₆) on new switchgear
- Trend-based leak-rate reporting to SCADA
Gases
Each gas has a reference page with limits, IR band and monitoring practice.
Certificates and compliance
Status words as on the datasheet: certified · pending · application dependent.
| IP68 | certified |
| CE | certified |
| Calibration interval | 3 years, record per unit |
How you get it
1
compartment pressure class & gas mixture
2
quote & delivery
3
install on the gas compartment (M12 / cable)
4
alert to SCADA · re-calibration every 3 years
FAQ
Does it satisfy Art. 5(1)(b) of Reg. 2024/573?
It is a density monitoring device with an automatic alert on Modbus RTU; the operator's SCADA must present the alert. See the F-gas regulation page.
Can it be retrofitted on live switchgear?
Mounting on the gas compartment's monitoring port; installation by the switchgear service partner during a planned outage.
Which mixtures?
SF₆, N₂, CF₄, O₂, CO₂, Novec™ 4710, He, Ar and mixtures — configured at order.
Get a quote
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