Spirax Sarco Spirax Sarco M741 Display 3335248741 M741 Flow Computer Wall Mounted with RS485

The Spirax Sarco M741 Intelligent Digital Indicator can be used in conjunction with a TVA or TFA flow meter for highly accurate mass flow measurement of saturated or superheated steam (TVA only) in a variety of mounting configurations, including wall-mounted and panel-mounted.

specificities

• Combined with TVA/TFA to form a high-precision flow measurement system.
• For saturated or superheated steam (TVA only).
• It can automatically save 65536 sets of the latest historical data, and the saving interval can be set.
• It can automatically draw historical curves of flow rate, temperature, pressure, etc., and the coordinate start and end can be set.
• Real-time clock and timed automatic meter reading functions bring convenience to metering management.
• Able to communicate data with the upper computer to form an energy metering network system.
• Transmitter +24V DC power supply (with short-circuit protection) can be provided to power TVA/TFA to simplify the system and save investment.
• The password setting prevents unauthorized persons from changing the set data.
• The meter does not have any internal adjustable devices such as potentiometers, coded switches, etc., which improves the vibration resistance, stability and reliability of the meter.
• Specially designed WDT circuit, power-on reset circuit and power-off data protection circuit ensure that the meter operates normally on power-on, and the data is not lost on power-off, and the power-off data protection does not need backup battery, and the protection time is 10 years.

options (as in computer software settings)

• Wall-mounted: With stainless steel meter box, weight 8kg, external power supply 220V, internal voltage regulator to 24Vdc for use.
• Tray mounted: mounted on a console or existing control cabinet, weight 2kg, available as standard with 220Vac supply, optionally with 24Vdc (to be specified when ordering).

mounting

• The disk-mounted gauges are secured to the instrument panel by two mounting brackets (supplied).
• The wall-mounted type is fixed to the wall or column by three M6 screws.

Technical parameters - Input

The M741 receives its signals from the TVA/TFA, which transmits the measured data to the M741 by means of digital communication, and the M741 accurately displays the data shown on the TVA/TFA LCD without any loss of precision.

Technical parameters - power supply

Technical parameters-Output

• 4-20mA active output(M741 external power supply): load impedance (max.) 600 ohms, data update period 0.5s.
• communication interface: EIA RS-485 serial interface (opto-isolated), communication rate 9600, 4800, 2400 or 1200 baud rate (selected by panel operation), no parity, 8 data bits, 1 stop bit, transmission medium is twisted pair.

environmental conditions

Ordering Instructions

Example: A set of Spirax Sarco M741 wall-mounted monitors, 220Vac.

weights