Calculated Industries 4087 Manual download pdf (Page 12)

Chapter 2 - TeleFlow Standard ACCOL Load

TeleFlow™ Standard ACCOL Load

2-2

Configurable 1, 2, 5, 15, and 60 second calculation interval.

Pulse counting and scaling.

Configurable automatic dial-out on alarm occurrence. (NOT YET SUPPORTED)

Control of an external radio.

Battery charge regulator.

The main task of the TeleFlow Standard Load executes every second and 'wakes up'

the hardware (out of low-power mode) and collects 'live' Differential Pressure (DP),

Static Pressure (P) and Temperature (T) input data and status data from the

internal sensor conditioning circuitry. In accordance with the API MPMS, Chapter

21 requirements, these are averaged over the configured Calculation interval for

use in the flow calculations; averaging is 'flow-dependent' in that it only occurs

when the DP value is above a configured 'cutoff' level.

The live DP and P values are used to compute an Extension value (the square root

of the product of the live DP and P) every second; Extension values are added over

the Calculation interval, which can be configured at 1, 2, 5, 15 or 60 seconds. The

interval is configured by the user to obtain the best balance of power consumption

and calculation rate. If a calculation is not scheduled the task completes and the

hardware re-enters sleep mode.

At the end of a Calculation interval a full flow calculation is performed. Averaged

input values for the interval are used in the FPV, AGA8Detail, or AGA8Gross

modules to obtain gas compressibility factors. These are then used in an AGA3

(1985 or 1992) equation to compute the flow rate in MSCF per hour. The Extension

used in the AGA3 calculation is an average Extension for the Calculation interval

NOTE:

The EGM 3530 only supports a subset of the ACCOL module library thus some

ACCOL modules will not operate. See the ’Hardware and Software Requirements’

section of the ACCOL II Reference Manual (document# D4044) to find out which

modules are supported.

In addition, the EGM-3530 will not provide some functions that are common in

Bristol products; among these are Communication Statistics, Crash Blocks, On-line

Diagnostics, Task slip information, and Task rate information.

1 2 ... 7 8 9 10 11 12 13 14 15 16 17 ... 35 36

No comments

Calculated Industries 4087 Manual Page 12