Micro Motion RFT9709 Bedienerhandbuch PDF herunterladen (Seite 136)

122

Using ProLink

Software with Micro Motion

Transmitters

Configure Menu: Transmitter Information

continued

Pressure input for RFT9739

Config and Calib Registers

For custody transfer applications, security event registers enable the

user to determine whether the configuration or calibration of the

RFT9739 has been changed.

• Security event register display boxes will only be displayed if the

transmitter is a Version 3 RFT9739.

• Regardless of the transmitter security mode, the security event

registers count changes to the parameters listed in

Table 11-1

• Each security event register will count to 999, then roll over to

zero (0).

Table 11-1. Parameters that increment event registers

11.3 Pressure input for

RFT9739

The pressure input option allows the user to select the appropriate input

for either pressure compensation or viscosity measurement. Open the

Pressure Input drop-down list:

• Options in the drop-down list are described below.

• Based on the user's selection, a HART tag name or a 4-20 mA range

may need to be entered for the pressure device.

The RFT9739 accepts pressure input signals from a pressure

transmitter for viscosity measurement or pressure compensation. If the

signal from the pressure transmitter fails, both of the following occur:

• The RFT9739 continues to operate in a non-fault mode.

• A "Pressure Input Failure" message is shown on the transmitter

display (if it has one).

Primary viscosity

The RFT9739 polls for differential pressure values from a

HART-compatible DP cell as a primary master.

• The user must enter the HART tag name for the desired transmitter.

• The user must perform a viscosity calibration, as described in

Section 14.5

, page 148.

Secondary viscosity

The RFT9739 polls for differential pressure values from a

HART-compatible DP cell as a secondary master.

• The user must enter the HART tag name for the desired transmitter.

• The user must perform a viscosity calibration, as described in

Section 14.5

, page 148.

Configuration register see page: Calibration register see page:

Range values for milliamp outputs 113 Mass and volume measurement units 96

Variables assigned to milliamp outputs 112 Frequency/pulse output scaling factors 110

Variable assigned to control output 117 Flow calibration factor 73

Mass and volume flow cutoffs 102 Flowmeter zeroing 133

Internal damping 105 Density calibration factors 78, 80

Flow direction 104 Density calibration 138

Milliamp output trim 151 Pressure compensation factors 86

Master reset (see transmitter instruction manual) Meter factors for flow and density 131

1 2 ... 131 132 133 134 135 136 137 138 139 140 141 ... 213 214

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