MTL Safety Barriers Current Repeater MTL4041A

MTL Safety Barriers Current Repeater MTL4041A

MTL Safety Barriers Current Repeater MTL4041A

MTL Safety Barriers Current Repeater MTL4041A

Description

The MTL4041A provides an input for separately powered 4/20mA transmitters and also allows bi-directional transmission of digital communication signals superimposed on the 4/20mA loop current, so that the transmitter can be interrogated either from the operator station or by a hand-held communicator (HHC).
MTL Safety Barriers Current Repeater MTL4041A

Specification

Number of channels
 One
Location of transmitter
 Zone 0, IIC, T4–6 hazardous area if suitably certified
 Div.1, Group A, hazardous location
Input impedance for HART® signals
 at terminals 5, 6: >230Ω
Maximum input volt drop
 at terminals 5, 6: <6.2V
 i.e. a transmitter load of 310Ω at 20mA
Input and output signal range
 4 to 20mA

Over-/under-range
 1.0mA to 21.5mA
Digital signal bandwidth
 50Hz to 8kHz
Safe-area circuit load resistance
 Conventional transmitters: 0 to 600Ω
 Smart transmitters: 250Ω ±10%
Safe-area circuit output resistance
 >1MΩ
Safe-area circuit ripple
 < 50µA peak-to-peak up to 80kHz
Transfer accuracy at 20°C
 Better than 20µA
Temperature drift
 <1µA/°C
Response time
 Settles within 200µA of final value after 20ms
LED indicator
 Green: one provided for power indication
Power requirement, at 20mA
 70mA at 24V
 85mA at 20V
 50mA at 35V
Power dissipation within unit, at 20mA
 1.6W at 24V
 1.7W at 35V
Isolation
 250V ac between safe- and hazardous-area circuits
Safety description
 Terminals 3 to 4 and 5 to 6
 8.6V (diode). This voltage must be considered when calculating
the load capacitance.
Simple apparatus
 Terminals 3 to 4 and 5 to 6 meet clause 5.4 of EN50020 : 1994 and have the following parameters: U ≤ 1.5V, I ≤ 0.1A,
 P ≤ 25mW. They can be connected without further certification into an IS loop with open circuit voltage of not more than 28V.
See certificate for further details

MTL Safety Barriers Current Repeater MTL4041A

MTL Safety Barriers Current Repeater MTL4041A