Vaisala HUMICAP MMT310 Guia do Utilizador Página 29

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Chapter 3 ________________________________________________________________ Installation
VAISALA ________________________________________________________________________ 29
Power Supply Requirements
The minimum supply voltage required by the MMT310 transmitter
depends on the output type and pressure:
- RS-232 output: 10 ... 35 VDC.
- Analog output: 15 ... 35 VDC.
- Pressures above 10 bara (145 psia): minimum 24 VDC.
Table 5 below lists the MMT310 current consumption according to
output type.
Table 5 Current Consumption by Output Type
Output
Consumption
RS-232
12 mA
Uout 10 V (10kOhm)
Channel1 & Channel 2
12 mA
Iout 20mA (load 511Ohm)
Channel 1 & Channel 2
50 mA
NOTE
M
MT310 can also be powered by an MI70 indicator or a USB cable
connection to a computer
. For information on ordering the optional MI70
and USB connection cables, see section
Spare Parts and Accessories on
page
69.
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