Place of Origin: | England |
Brand Name: | MTL |
Model Number: | MTL5544A/AS |
Minimum Order Quantity: | 10 Pcs |
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Packaging Details: | carton |
Delivery Time: | in stock |
Payment Terms: | T/T payment |
Supply Ability: | 500 pcs |
MTL5544A/AS current repeater 4/20mA passive i/p for HART® transmitters
MTL5544A provides an input for separately powered 4/20mA transmitters and also allows bi–directional transmission of HART 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). Alternatively, MTL5544AS acts as a current sink for a safe-area connection rather than driving a current into the load.
SPECIFICATION
See also common specification
Number of channels
Two
Location of transmitter
Zone 0, IIC, T4–6 hazardous area if suitably certified
Div.1, Group A, hazardous location
Hazardous area input
Signal range: 4 to 20mA
Under/over-range: 1.0 to 21.5mA
Input impedance for HART signals
at terminals 1, 2 and 4, 5: > 230Ω
Maximum input volt drop
at terminals 1, 2 and 4, 5: < 6.6V
i.e. a transmitter load of 330Ω at 20mA
Safe-area output
Signal range: 4 to 20mA
Under/over-range: 1.0 to 21.5mA
Safe-area load resistance (MTL5544A)
Conventional transmitters: 0 to 360Ω
Smart transmitters: 250Ω ±10%
Safe-area load (MTL5544AS)
Current sink: 600Ω max.
Maximum voltage source: 24V DC
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
Communications supported
HART
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