A remote-transmission density relay that also monitors SF6 moisture — one device for density and gas-quality data over RS-485.
Remote · Micro-Water · Ø100
The MJR100W combines the MJR100 remote density relay with an integrated micro-water sensor, outputting gas density, moisture (PPM), dew point, temperature and pressure to SCADA — reducing site visits for gas-quality checks.
Technical Specifications
| Shell diameter | 100 mm |
|---|---|
| Measurement range — density | −0.1 ~ 0.9 MPa (customizable) |
| Measured — micro-water | SF6 moisture (PPMv) / dew point |
| Remote outputs | Density, micro-water, dew point, temperature, pressure |
| Accuracy @ 20 °C | Grade 1.0 or 1.5 |
| Accuracy @ −40 ~ +60 °C | Level 2.5 |
| Working temperature | −40 ~ +60 °C; relative humidity ≤ 95 % RH |
| Remote output — power | DC 24 V |
| Communication | RS-485, Modbus RTU protocol |
| EMC performance | IEC 61000-4 series compliant |
| Contact output | Up to 3 pairs (alarm + lockout), 30 W / 50 VA, 1 A max; 220 VDC / 380 V 50/60 Hz |
| Contact type | Magnetic-assisted electric contact; 80 % silver, 20 % nickel, 10 µm gold plating |
| Insulation | > 100 MΩ (DC 500 V); withstand 2 kV 50/60 Hz 1 min |
| Process connection | M20 × 1.5 (customizable) |
| Leakage rate | ≤ 1×10⁻⁸ Pa·m³/s (helium leak detection) |
| Protection level | IP65 |
| Pressure sensing element | Imported Bourdon tube |
All parameters are typical values and can be customized to your specification. Contact us for a model-specific datasheet.
Customization & ordering
Measurement range, alarm and lockout set-points, process connection, output and labeling are configured to your equipment. OEM and ODM welcome.
Rated density plus alarm (P1) and lockout (P2) points set for your SF6 equipment.
M20×1.5 standard, or specify thread, self-sealing valve and adapter.
Configurable moisture range; fiber-optic or wireless remote on request.
← Back to all SF6 density relays How density monitoring works
Send us your quantity, rated density, set-points and connection details — we reply within 24 hours.