Description
MEASUREMENTS TECHNOLOGY LTD.
MTL INSTRUMENTS
MTL5045
ISOLATING DRIVER
4-20MA FOR I/P CONVERTERS
POWER SUPPLY: 28V, 300Ω,93MA
UM = 250V
MAX AMB 60°C
TECHNICAL SPECIFICATIONS:
NUMBER OF CHANNELS: ONE
SAFE-AREA INPUT: SIGNAL RANGE: 4 TO 20MA
UNDER/OVER RANGE: 0 TO 24MA
HAZARDOUS-AREA OUTPUT: MAXIMUM LOAD RESISTANCE: 800O (16V AT 20MA)
OUTPUT RESISTANCE: >2MO
INPUT VOLTAGE DROP: <4V AT 20MA
INPUT AND OUTPUT CIRCUIT RIPPLE: <40ΜA PEAK-TO-PEAK
TRANSFER ACCURACY AT 20°C: BETTER THAN 20ΜA
TEMPERATURE DRIFT: <1ΜA/°C
RESPONSE TIME: SETTLES TO WITHIN 10% OF FINAL VALUE WITHIN 250ΜS
LED INDICATOR: GREEN: POWER INDICATION
SUPPLY VOLTAGE: 20 TO 35V DC
MADE IN LUTON,ENGLAND
The Measurements Technology MTL5045 is a single-channel isolating driver for 4-20 mA signals to I/P converters, serving marine control systems. It takes a 4 to 20 mA signal from the safe-area controller and passes it to a hazardous-area output that drives an I/P converter. The module runs from a 20 to 35 V DC supply, shows power on a green LED and is rated for a maximum ambient temperature of 60°C. Its role is to carry the control signal across the hazardous-area boundary with the two circuits isolated from each other. This unit is in used condition.
Key Features
✓ Single channel with 4 to 20 mA safe-area input
✓ Under/over range of 0 to 24 mA
✓ Hazardous-area output, maximum load 800 Ω (16 V at 20 mA)
✓ Transfer accuracy better than 20 µA at 20°C, drift below 1 µA/°C
✓ 20 to 35 V DC supply with green power LED
Marine Applications
✓ Driving I/P converters on pneumatic control valves in engine room control loops
✓ Valve positioning signals for cargo and fuel handling in hazardous areas
✓ Pneumatic actuator control on boiler feedwater and fuel oil valves
✓ Hazardous-area process control on tankers and gas carriers
Technical Support
Prota Marine provides technical support, repair and onboard installation for the MTL5045 isolating driver and the wider marine control system. Our engineers assist with fault diagnosis on the driver and its connected I/P converter circuit, and offer commissioning support once the module is back in service.
