Technical dataRadar Tank Gauge

 

Auxiliary energy

 

 

Electrical connection

Housing T 12 with separate terminal compartment.

 

 

Load HART

Minimum load for HART communication: 250 Ω

 

 

Cable entry

Cable gland: M20x1.5 or Pg13.5

 

Cable entry: G ½ or ½ NPT

 

 

Supply voltage

See page 28

 

 

Power consumption

Max. 330 mW at 16 V, max. 500 mW at 24 V, max. 600 mW at 30 V.

 

 

Current consumption

Max. 21 mA (50 mA inrush current).

 

 

Power supply

For stand alone operation recommended via e.g. Varec RN 221N/Z.

 

 

 

Performance characteristics

 

 

Reference operating

According to OIML R85:

conditions

• Temperature = –25…+55 °C (-13…+131 °F)

 

• Atmospheric pressure

 

• Relative humidity (air) = 65 % ±15%

 

• Medium properties: e.g. medium with good reflectivity and calm

 

surface.

 

• Tank diameter: signal beam hits the tank wall only at one side.

 

Note!

 

No major interference reflections inside the signal beam.

 

 

Maximum measured

Absolute accuracy: 0.5 mm (2σ value)

error

Inventory Control Versios: ±3 mm

 

 

Proof of accuracy for

The accuracy of each 7500 RTG is established through a calibration

custody transfer ver-

certificate that records the absolute and relative error at 10

sions

equidistant points during the final test. For stilling well measurements

 

with 7532 RTG, a NMI / PTB calibrated tape with an absolute accuracy

 

of 0.25 mm is used.

 

Each 7500 RTG is delivered with the PTB and NMi type approval.

 

Additional initial factory verifications for custody applications are

 

available on demand for all 7500 RTG.

 

 

Maximum fill speed

By the first pass trough of measuring range: 100 mm/min., after it

 

unlimited.

 

 

Non-repeatability

0,3 mm (1/64")

 

 

Hysteresis

0.3 mm

 

 

Resolution

digital: 0.1 mm

 

analogue: 0.03 % of measuring range

 

 

Settling time

Typical 15 sec

 

 

Long-term drift

The long-term drift is within the specified accuracy.

 

 

Influence of ambient

Within the specified accuracy according to OIML R85.

temperature

 

 

 

Software reliability

The software used in the 7500 RTG fulfills the requirements of OIML

 

R85. This particularly includes:

 

• cyclical test of data consistency

 

• non-volatile memory

 

• segmented data storage

 

The 7500 RTG continuously monitor the compliance with accuracy

 

requirements for custody transfer measurements according to OIML

 

R85. If the accuracy cannot be maintained, a specific alarm is

 

generated on the local display and via the digital communication.

 

 

88

Installation and Operations Manual

Page 87 Page 89
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Lightning Audio 7532 manual Technical dataRadar Tank Gauge, According to Oiml R85
Page 87 Page 89

7532 specifications

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