Anderson LA Series Руководство по эксплуатации - Страница 3

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Section 1 General

1.1 INTRODUCTION

The Anderson "LD/LA" standard and pharmaceutical series level transmitters are unique

devices designed for level control applications where pressure based technology provides

the best overall solution, but where bottom access for the sensor is not available or prefer-

able. These sensors are designed to be mounted on the top of the vessel with the extension

tube positioning the sensing diaphragm near the bottom of the tank. Common applications

include rotary filler bowls, surge tanks and small processing storage vessels where bottom

access is impractical. With no moving parts, no air required, and wide compensated

temperature range the LD/LA provides accuracy and repeatability in applications where

other sensing technologies have been proven unreliable.

1.2 SPECIFICATIONS

Performance

Upper Range Limit (URL)

Minimum Span:

Over-Range Capacity:

Accuracy:

Repeatability:

Stability:

Compensated Temp. Range: 30°F to 220°F (-1°C to 104°C)

(process)

Compensated Temp. Range: 30°F to 120°F (-1°C to 49°C)

(ambient)

Effect of Process/Ambient

Temperature Change:

Humidity:

Response Time:

Power Signal

Output:

Loop Power required:

Effect of Voltage Change:

Load Impedance:

Cable Recommended:

Materials/Construction

Housing /Wiring Head:

Wetted Parts:

Surface Finish (LD):

Surface Finish (LA - Pharm.)

Housing Rating:

Agency Approvals

Electronic "Noise"

Immunity:

Sanitary Standards:

Hazardous Locations:

Warranty:

72" water column (w.c.)

30" w.c.

2.5 times the URL (180" w.c.)

± 0.75% of URL (± 0.5" w.c.)

within ±0.3% of URL (± 0.2" w.c.)

Within published specification for one

(1) year minimum

± 0.40% of URL per 10°F

0-100% RH, Condensing

526 mSec

4-20mA dc

12-40 Vdc

± 0.05% of URL per 30 volts

1550 Ohms at 40 VDC

18-24 AWG, .169" to .209" diameter,

stranded, 2 conductor with ground,

shielded and PVC coated for use with

seal-tight wire grommet

304 stainless steel

316L stainless steel

Ra=25 microinches or better (wettedparts)

Ra=15 microinches or better (wetted parts)

NEMA 4X, IP-65

Designed to meet IEC 801-2, -3 and -4,

Level 3, CE Compliant

Complies with all applicable provisions

of 3-A Sanitary Standards (74-00).

For LA only: UL, Intrinsically safe for use in CLass 1, Div. 1 Groups A-D.

All units are covered by a two (2) year warranty against defects in material

and workmanship when installed and maintained according to the instruction

manual provided.

AGE