Inputs and outputs, Mechanics – Vaisala MMT330 User Manual

Page 163

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Chapter 9 _____________________________________________________________ Technical Data

VAISALA _______________________________________________________________________ 161

Inputs and Outputs

Operating voltage

10 ... 35 VDC, 24 VAC

with optional power supply module

100 ... 240 VAC, 50/60 Hz

Power consumption @ 20 °C (U

in

24VDC)

RS-232

max 25 mA

U

out

2 x 0 ... 1V / 0 ... 5V / 0 ... 10V

max 25 mA

I

out

2 x 0 ... 20 mA

max 60 mA

display and backlight

+ 20 mA

Analog outputs (2 standard, 3rd optional)

current output

0 ... 20 mA, 4 ... 20 mA

voltage output

0 ... 1 V, 0 ... 5 V, 0 ... 10 V

Accuracy of analog outputs at 20 °C

± 0.05 % full scale

Temperature dependence of the analog outputs

± 0.005 %/°C full scale

External loads

current ouputs

R

L

< 500 ohm

0 ... 1V output

R

L

> 2 kohm

0 ... 5V and 0... 10V outputs

R

L

> 10 kohm

Wire size

0.5 ... 2.5 mm

2

(AWG 20 ... 14)

stranded wires recommended

Digital outputs

RS-232

RS-422/485 (optional)

LAN (optional)

WLAN (optional)

Protocols

ASCII commands

Modbus RTU

Modbus TCP

Relay outputs (optional)

0.5 A, 250 VAC, SPDT
(optional)

Display

LCD with backlight, graphic
trend display of any parameter

Display menu languages

Chinese, English, Finnish,
French, German, Japanese,
Russian, Spanish, Swedish

Mechanics

Cable bushing

M20x1.5 for cable diameter
8 ... 11mm/0.31 ... 0.43"

Conduit fitting

1/2" NPT

Interface cable connector (optional)

M12 series 8-pin (male)

option 1

with plug (female) with 5 m /
16.4 ft black cable

option 2

with plug (female) with screw
terminals

Probe cable diameter

5.5 mm

Probe tube material

AISI 316L

Housing material

G-AlSi 10 Mg (DIN 1725)

Housing classification

IP 65 (NEMA 4X)

Transmitter weight (with probe, cable, and modules)

1.0 ... 3.0 kg (2.2 ... 6.6 lb)

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