Reference, Installation, and Operations Manual

Section 2: Product overview

3-9000-743 Rev S

June 2013

 

 

 

2.4Electronic specifications

This section discusses the specifications for Daniel Mark III Ultrasonic Gas Flow Meters.

2.4.1Power specifications

24 VDC nominal, range: 10.4 VDC to 36 VDC

total power consumption less than 8 W

2.4.2Temperature

Flameproof enclosure and Intrinsically safe base unit refer to Table 2-2for temperature ranges.

Important

The process temperature must not exceed the operating temperature range of the transducers.

2.4.3Inputs

one general-purpose digital input

optional analog inputs, one each for pressure and temperature (requires the Option Board)

2.4.4Outputs

two frequency output pairs (4 total)

four digital outputs

one optional analog output (requires the Option Board)

two optional analog outputs (requires the Series 100 Plus Option Board)

2.4.5Communications

two serial ports (RS-232/RS-485 Full Duplex/RS-485 Half Duplex) with manually switched RS-485 terminations

optional third serial port (RS-232/RS-485 Half Duplex) with manually switched RS-485 terminations (requires the Option Board or Series 100 Plus Option Board)

one optional Ethernet port (10 BaseT)

The optional third serial port can be used as a Modbus master to communicate with a Daniel Gas Chromatograph (GC) in Sim 2251 mode.

Electronic specifications

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