Section 2: Product overview

Reference, Installation, and Operations Manual

June 2013

3-9000-743 Rev S

 

 

2.5Hardware features

2.5.1Inputs

Digital input

The meter provides a single general-purpose digital input. The input signal polarity is selectable via a configuration data point and its (polarity-configured) value is readable via another data point.

Pressure and temperature analog inputs

The meter provides two analog inputs (AIs) via the Option Board or the Series 100 Plus Option Board - one for temperature (AI1) and one for pressure (AI2). Each analog input is expected to be a 4-20mA signal.

The analog-to-digital conversion accuracy is within ±0.05% of full scale over the operating temperature range.

2.5.2Outputs

frequency Outputs

The Daniel Mark III Ultrasonic Gas Flow Meter provides two pairs of frequency outputs where each pair is individually configurable. The first pair is comprised of FO1A and FO1B; the second pair is comprised of FO2A and FO2B. The information represented by each frequency pair is software selectable (with selections such as flow volume, gas velocity, sound velocity, energy rate, or mass rate - see Section 5.6.7). The frequency output range for each pair is individually software selectable as either 0-1000 Hz or 0-5000 Hz (with an overrange of 50%).

The worst case frequency output granularity is 1 Hz at 5000 Hz. When a frequency is configured to represent volume, the volume accuracy is within ±0.01%.

The meter provides two pairs of configurable frequency outputs (FO1A, FO1B, FO2A, and FO2B), four configurable digital outputs (DO1A, DO1B, DO2A, and DO2B), and an optional analog output (AO1).

The frequency and digital outputs are divided into two groups as follows:Group 1:FO1A, FO1B, DO1A, DO1BGroup 2:FO2A, FO2B, DO2A, DO2B

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Hardware features