Brooks Instrument MT3810 - Manual (Page 17)

Installation and Operation Manual
X-VA-MT3810-eng
Part Number: 541B050AAG
December, 2008
Model MT 3810
Section 1 Introduction
1-11
Output Signals
Transmitter: 4-20 mA analog output with HART
Update Rate: 4 times per sec.
Range: 3.8 to 22.0 mA
Two Alarm Outputs (open collector)
Optically isolated outputs assignable to alarms, reverse flow indicator, or
manual valve.
Maximum off-state voltage: 30 Vdc
Maximum off-state current: 0.05 mA
Maximum on-state voltage: 1.2 Vdc
Maximum on-state current: 20 mA
One Pulse Output (open collector)
Optically isolated. Scaleable to a variety of engineering unit systems (pulses
per liter, gallons, etc.)
Range: 1 Hz to 1 kHz
Maximum off-state voltage: 30 Vdc
Maximum off-state current: 0.05 mA
Maximum on-state voltage: 1.2 Vdc
Maximum on-state current: 20 mA
Note: Load resistance should also include I.S. barrier
resistance. When using Model 275 HART Communicator the
minimum load resistance is 250 ohms.
Figure 1-6 Power Supply vs. Maximum Load Resistance
Explosion- proof/ Flame-proof
United States and Canada UL Listed, E73889, Vol. 1, Sect. 14
Class I, Division 1, Groups C, D;
Dust Ignition-proof, Class II, Division 1, Groups E, F, G; Class III; T4
Europe – KEMA 01ATEX2207 X
II 2 G EEx d IIB T4
II 2 D T135
o C