| Measured Parameters |
| Dew point |
−60 … +30 °C (−76 … +86 °F) |
| Pressure, absolute |
1 … 12 bar (14.5 … 174 psi) |
| Temperature |
−40 … +80 °C (−40 … +176 °F) |
| Calculated Parameters |
Pressure, normalized to +20 °C
(+68 °F) |
1 … 12 bar (14.5 … 174 psi) |
| SF6 or SF6/N2 mixture density |
0 … 100 kg/m3 |
| Moisture by volume, ppm |
40 … 40 000 ppm |
Dew point, converted to atmospheric
pressure |
−65 … +30 °C (−85 … +86 °F) |
| Measurement Performance |
| Dew point accuracy |
±3 °C (±5.4 °F), see graph below |
| Dew point stability |
Typical drift < 2 °C (3.6 °F) / 5 years |
| Pressure accuracy at +23 °C (+73.4 °F) |
±0.4 %FS |
| Pressure temperature dependence |
±0.01 bar/10 °C (18 °F) |
| Pressure stability |
Typical drift < 1 %FS / 5 years |
| Temperature accuracy |
0 … +40 °C (+32 … +104 °F):
±0.5 °C (± 0.9 °F)
−40 … 80 °C (−40 … +176 °F):
±1 °C (± 1.8 °F) |
| Density accuracy (pure SF6, 1 … 12 bara) |
0 … +40 °C (+32 … +104 °F): ±1 %FS
−40 … +60 °C (−40 … +140 °F):
±2.2 %FS |
Typical ppm accuracy
(5 … 1000 ppm, 7 bar) |
±(7 ppm + 15 % of reading) |
| Sensor |
Vaisala MPS1 multiparameter sensor |
| Sensor Response Time |
| Pressure Response Time |
< 1 s |
Dew point response time 1)
63 % [90 %] at 20 °C and 1 bar |
−50 ~ −10 °C Tdf: 5 s [10 s]
−10 ~ −50 °C Tdf: 10 s [2.5 min] |
| 1) System equilibrium related response time is typically longer. |
| Inputs and Outputs |
| Digital outputs |
RS-485, non-isolated, Vaisala protocol
Modbus RTU protocol |
| Connector |
M8 4-pin male |
| Operating voltage |
15 … 28 VDC
20 … 28 VDC in cold temperatures
(−40 … −20 °C (−40 … −4 °F)) |
Supply current, during normal
measurement |
20 mA |
| Supply current, during self-diagnostics |
Max. 300 mA pulsed |
| Operating Environment |
| Operating temperature of electronics |
−40 … +60 °C (−40 … +140 °F) |
| Operating pressure |
1 … 12 bar (14.5 … 174 psi) |
| Mechanical durability |
0 … 50 bar (0 … 725 psi) |
| Relative humidity |
0 … 100 % |
| Measured gases |
SF6, SF6/N2 mixture |
| Storage temperature, transmitter only |
−40 … +80 °C (−40 … +176 °F) |
Storage temperature, shipment
package |
−20 … +80 °C (−4 … +176 °F) |
| Mechanical Specifications |
| Housing material |
AISI316L |
| Mechanical connection |
DILO DN20, DILO DN8,
ABB Malmquist, or Alstom G1/2″
compatible connector
Every connection is helium leak tested
at the factory. |
| Weight (with DILO adapter) |
765 g (27.0 oz) |
| IP rating |
IP66 1) |
| 1) Weather shield to be used in continuous outdoor installations. |
| Compliance |
| EMC compatibility |
EN 61326‑1, basic electromagnetic
environment |
| Compliance marks |
CE, RCM, WEEE |
| Mechanical Vibration |
Vibration (sinusoidal)
IEC 60068‑2‑6 |
±6 g, 5-500 Hz sweep
60 min/axis, 3-axis |
| Spare Parts and Accessories |
| Connection cable for the MI70/DM70 handheld |
219980 |
| USB connection cable |
219690 |
| Protection plug for connector |
218675SP |
| 1.5 m shielded PUR cable with 90° connector |
231519SP |
| 3 m shielded PUR cable with 90° connector |
231520SP |
| 5 m shielded PUR cable with 90° connector |
231521SP |
| 10 m shielded PUR cable with 90° connector |
231522SP |
| 3 m shielded FEP cable with straight connector |
226902SP |
| Weather shield |
ASM210326SP |
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