Vaisala MMT310 - Manual (Page 29)

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 MMT310 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.