Technical Data

Measurement Performance

Water Activity

Measurement range aw (%RS)

0 … 1 (0 … 100 %)

Accuracy (Including Non-Linearity, Hysteresis, and Repeatability):

0 … 0.9 (0 … 90 %)

0.9 … 1.0

±0.02

±0.03

Response time (90 %) at +20 °C in still

oil

(with stainless steel filter)

10 min

Sensor

Vaisala HUMICAPâ 180L2

Temperature

Measurement range

-40 ... +180 °C (-40 ... +356 °F)

Typical accuracy at +20 °C (68 °F)

±0.2 °C (±0.36 °F)

Sensor

Pt100 RTD Class F0.1 IEC 60751

Mechanical Specifications

IP rating

IP66

Weight example: MMT317 with 2 m

cable

(Weight depends on selected probe

and cable)

476 g

Cable feed through alternatives

8-pole connector with 5 m cable

Female 8-pin connector screw joint

for cable diameter 4 ... 8 mm

Sensor protection

Stainless steel grid standard filter

Stainless steel grid filter for high flow

rates (> 1 m/s)

Materials

Transmitter housing

G-AlSi 10 Mg

Transmitter base

PPS

Probe Cable Length

MMT317

2 m, 5 m, or 10 m

MMT318

2 m, 5 m, or 10 m

Probe installation MMT317

Swagelokâ

NPT 1/2", ISO 3/8" or ISO 1/2"

Probe installation MMT318

Fitting bodies

ISO 1/2", NPT 1/2"

Operating Environment

Operating temperature for electronics

-40 ... +60 °C (-40 ... +140 °F)

Storage temperature

-55 ... +80 °C (-67 ... +176 °F)

Pressure range for MMT318 with ball-

valve up to 120 °C

0 ... 40 bar

Pressure range for MMT317

0 ... 10 bar

EMC compliance

EN61326-1, Industrial environment

Inputs and Outputs

Two analog outputs, selectable and

scalable

0 ... 20 mA or 4 ... 20 mA

0 … 5 V or 0 … 10 V

1 … 5 V available through scaling

Typical accuracy of analog output at

+20 °C

±0.05 % full scale

Typical temperature dependence of

analog output

0.005 %/˚C (0.003 %/°F) full scale

Serial output

RS-232C

Connections

8-pole connector with RS232C,

current/ voltage outputs (two

channels) and Uin

Operating voltage

10 ... 35 VDC

External load

RL < 500 Ω

Startup time after power-up

3 s

Minimum Operating Voltage

RS232C output

10 VDC

Analog output

15 VDC

Pressures above 10 bara (145 psia)

24 VDC

Power Consumption

RS232C

12 mA

Uout 10 V (10 kΩ)

Channel 1 & channel 2

12 mA

Iout 20 mA (load 511 Ω)

Channel 1 & channel 2

50 mA

Spare Parts and Accessories

Rain shield

ASM211103

USB cable

238607

Stainless steel filter

HM47453SP

Stainless steel filter (high flow rate)

220752SP

Ball-Valve Set

BALLVALVE-1