Ronan X76CTM Manuel d'utilisateur télécharger pdf (Page 13)

Enter product expansion

0.00065

Enter coefficient of expansion and press [ENT.].

Function 92 is used when the product name cannot

be found in product codes.The coefficient can be

viewed or changed with this function. It is not nec-

essary to enter the decimal point.

78, Select Product [HI, LO]

The X76CTM has predefined the most common

hydrocarbon fuel products.To select a product, use

Function 78.

Select product (HI,LO)_1

Use the [HI] and [LO] keys to scroll through the pre-

defined list and select the chosen product.

0 = None

1 = Regular

2 = Premium

3 = Super

4 = Diesel

5 = Kerosene

6 = Toluene

7 = Hydraulic Oil

8 = #2 Heating Oil

9 = Turbine Oil

10 = Xylene

11 = Jet Fuel

12 = AV Gas

13 = Water

If the product is not listed, enter the product name

(to appear in reports) using Function 97, and its

coefficient of expansion using Function 92.

97, Enter Product Name

If a product is not listed in the predefined list

(Function 78), a new product name can be added

by using Function 97 and its corresponding expan-

sion coefficient, using Function 92.

47, Enter Tank Ullage %

Press Function 47, [ENT.] for programmable ullage.

Message will display:

Enter tank ullage 95%

Enter the % and press [ENT.].

43, Delivery Threshold

When a product is delivered to a tank, the X76CTM

senses it and writes the date, time, amount, and

temperature of the delivered product. Sometimes, a

small amount of product pouring back in the tank

during transfer is not considered as delivery.To min-

imize confusion, the user can set up a value that

will eliminate the small levels.The default threshold

is 200 gallons. Use Function 43 to change the

delivery threshold and press [ENT.] to save.

Delivery threshold

100.0 gl

75, Leak Detect Threshold

X76CTM has 4 leak-related alarms: Quick Test,

Precise Test, High Leak, and CSLD (Continuous

Statistical Leak Detection).The function for each of

these alarms may be programmed independently

using F82.

The Quick Test is started automatically after a pre-

defined, probe-dependent interval following a deliv-

ery (1 hour for X76MP, 7100, MTS-UST and

Veeder-Root MAG2).The result is compared to a

probe-specific threshold and, if a failure has

occurred, an alarm is generated.Testing immedi-

ately after a delivery is not precise, although still

within the EPA requirements. Ronan recommends

this result only as a leak indication, not as a basis

for programming station shutdown.

The Precise Test is run after a longer waiting period

following the delivery. It guarantees more accurate

results and a lower number of false alarms.Two

thresholds are possible for this test corresponding

to the 0.1 and 0.2 gallons/hour EPA requirements.

The thresholds are set automatically, and are probe

dependent. Normally, a station shutdown procedure

is specified for this alarm.

The High Leak alarm is activated whenever a gross

leak is detected.The leak must be higher than

9 gph, and lower than the minimal pump through-

put. High Leaks occur when a pipe is broken, or the

tank is physically damaged.The High Leak detec-

tion alarm time is shorter than a leak test, typically

less than 30 minutes.

The CSLD alarm is activated when long-term data

shows possible tank leakage. It is useful for busy

stations that do not have time to run a full test.

Since the result of the CSLD test is based on the

database compiled by short tests, it cannot be used

to confirm a leak. If a CSLD alarm occurs, the tank

must be shutdown and a full test, preferably a

Precise Test, has to be run.

To set up the leak test parameters, select F75.

Pressing [ENT.] at every parameter confirms the

current value.

Leak scatter is a very important parameter, since it

defines when the tank is quiescent, and a test can

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Ronan X76CTM Manuel d'utilisateur Page 13

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