PREX3000 VECTOR INVOLUTE TYPE
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PNEUMATIC FLOAT LIQUID LEVEL TRANSMITTERS |
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MODEL: KQP |
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The PREX3000 instruments are pneumatic type transmitters which employ a combination of vector balance mechanism and involute mechanism. |
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The instruments are featured by high resistance against adverse environments, high turn-down ratio, high accuracy, and ease of maintenance. |
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Standard Specifications |
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Item |
Specification |
Detector Section |
Measuring range |
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0-300,0-500,0-700,0-1000,0-1500,0-2000,0-2500,0-3000mm |
Specific-gravity |
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0.05~1.6 (for details, see the following table.) |
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Pressure rating
Specific gravity range
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General type |
Corrosion resistant type (major component: hastelloy C) |
JIS 10K,30K, |
JIS 63K, |
JIS 10K,30K |
ANSI/JPI 150,300 |
ANSI/JPI 600 |
ANSI/JPI 150,300 |
Medium Sp.-gr. |
0.2~1.6 |
Applicable to all ranges except 300mm range. |
0.3~1.6 |
Applicable to 300mm range only. |
Low Sp.-gr. |
0.05~0.4 |
Applicable to all ranges except 300 and 500mm ranges. (applicable to JIS 10k and ANSI/JPI 150) |
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0.08~0.4 |
Applicable to 500mm range, only |
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0.1~0.6 |
Applicable to 300mm range, only |
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Process connections |
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Flange connections |
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External chamber type: Connecting method:Side-side flanged, side-bottom flanged, Top-side flanged, Top-bottom flanged |
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Flange size:2" or 1½" RF, 2" or 1½" RTJ for ANSI 600 |
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Internal float type: Connecting method:Top flanged, side flanged |
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Flange size:4" RF, 4" RTJ for ANSI 600 |
Operating pressure and temperature range |
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Type of detector |
Pressure and temperature range |
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High damping type (model 310 or 320) |
From – 1.0 kgf/cm2 to respective pressure ratings, 0 to 200℃ |
Torque tube type (model 210 or 220) |
From – 1.033 kgf/cm2 to respective pressure ratings, -196 to +400℃ |
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Detector Section |
Materials (table 1) |
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Torque tube
Major components
Center
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V |
H |
N |
C |
L |
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(350~400℃) |
(200~250℃) |
(200~350℃) |
(0~200℃) |
(0~200℃) |
(-40~+200℃) |
(-196~0℃) |
(-40~0℃) |
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Torque tube |
Inconel |
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Inconel |
-- |
SUS316L |
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SUS316L |
-- |
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Seal diaphragm |
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SUS316L |
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SUS316L |
-- |
Hastelloy C |
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SUS316L |
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Bonnet |
Carbon steel (SF45A) , SUS304, SUS316, SUS316L, (Standard use of carbon steel is at temperature higher than 0℃, Please contact us for operating –196 to 0℃ temp. range) |
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Chamber |
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Float |
SUS316L |
Hastelloy C |
SUS316L |
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Bolts |
Chromium-molybdenum steel (SNB7) |
SUS304 |
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Gasket |
JIS 10K 30K, ANSI / JPI 150 300 |
Semi-metallic (filler material: asbestos) |
Asbestos sheet |
Teflon sheet (ceramic reinforced) |
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ANSI / JPI 600, JIS 63K |
Semi-metallic (filler material, asbestos) |
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Semi-metallic (filler material, teflon) |
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Radiating fins |
Provideed |
Not provided |
Provided |
Not provided |
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Sealing liquid |
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B |
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A |
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A |
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A |
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Performance |
Accuracy repeatability, And dead band |
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Specific-gravity range |
Accuracy (carbon with weight) |
Repeatability |
Dead band |
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Medium sp. – gr. |
Low sp. – gr. |
Transmission |
Indication |
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Less than 0.4 |
Less than 0.1 |
±1.0% FS |
±1.5% FS |
0.6% FS |
0.2% FS |
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0.4 or over |
0.1 or over |
±0.5% FS |
±1.0% FS |
0.3% FS |
0.1% FS |
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Damping adjustment |
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Adjustable range:Approx, 100:1 or more (time constant is 20 sec. Or more at maximum damping) (applicable to type 31 or 32 detector) |
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General Specifications |
Signal pressure |
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0.2-1.0 kgf/cm2 or 3-15 PSI, 0 or 1.4 kgf/cm2 (on-off, different gap) |
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Minimum load |
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I.D. 4mm × 3m + 20cm3 |
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Air supply pressure |
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1.4±0.14 kgf/cm2 |
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Air consumption (50% output balanced) |
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Indicating and transmission:9Nℓ/min Only indicating:5Nℓ/min Indicating and control:9Nℓ/min |
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Manual control:+3Nℓ/min Indicating, control, and pneumatic pressure transmission:9Nℓ/min |
Saturated air supply capacity |
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Pneumatic transmission:40 Nℓ/min Output:40 Nℓ/min Manual pneumatic pressure:30 Nℓ/min |
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Air piping connections |
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PT ¼ or ¼ NPT internal thread |
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Operating temperature |
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Controller (ambient): -30 to +80℃ |
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Relative humidity |
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10-90% RH |
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Case, Door |
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Enclosure:Rain-tight and dust-tight, meets JIS F8001 Class 3 splash-proof, NEMA3, IEC IP54 |
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Materials:Case……………..Aluminum die-cast |
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Door……………...Polyester with fiberglass |
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Door-glass……….Reinforced glass (3mm thick) |
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Case finish:Acryl baking finish |
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Color of finish:Dark beige |
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Installation |
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Direct mount to the process with flanges. |
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Weight |
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Approx. 4.2kg (when model KQP210-11N4103A4-X) |
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Optional Specifications |
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Item |
Specification |
(1) Elevation and suppression (applicable to type 310 or 320) |
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(1) Elevation:Use for an input range the low limit of which is higher than zero. |
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Suppression:Reverse of elevation. Used primarily for measurement of levels of low specific-gravity liquids. |
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(2) Float weight adjustment mechanism. |
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(applicable also to floats which are not of standard types) |
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Use this mechanism to satisfy the following condition: |
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● WA – W = We |
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We: Elevation weight ≦ 1.2kg W : Float weight WA: Basic weight for adjustment |
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(3) Zero elevation mechanism (used for measuring range change by zero-point elevation) |
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Use this mechanism to satisfy the following condition: |
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● Fe = πd2 / 4 * Le * p≤1.2kg Fe:Buoyancy corresponding to amount of zero elevation (kg) |
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● FR + Fe = πd2 / 4 * ( LR + Le ) * p≤1.6kg FR:Buoyancy at measuring range (kg) |
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● (LR + Le) / L≤1 d:Diameter float (m) ℓ:Total length of float before zero-elevation (m) |
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● FR = πd2 / 4 * LR * p≥0.4kg ℓR:Measuring range after zero-elevation (m) |
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ℓe:Zero-elevation range (m) ρ:Density of measured liquid (kg/cm2) |
(2) Air set |
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Pressure regulator with filter plus Φ40mm pressure gauge. (supply pressure: 2-9.9 kgf/cm2, output: 1.4 kgf/cm2, pressure gauge: 0-2 kgf/cm2) |
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Model Number Table Ex: KQP210-27N4230A4-7 |
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Basic model no. |
Selections |
Options |
Description |
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Type of detector |
Process connection |
Mat'l of bonnet/ chamber |
Mat'l of torque tube/ sea diaphragm |
Pressure rating |
Flange size |
Measuring range |
Air connection |
Signal pressure |
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KQP |
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Liquid level indicationg controller |
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210 |
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Torque tube type, ﹛sp.-gr. 0.2-1.6, 0.3-1.6 (0-300mm range only)﹜ |
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220 |
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Torque tube type, ﹛sp.-gr. 0.05-0.4, 0.08-0.4 (0-500mm range only), 0.1-0.6 (0-300mm range only)} |
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310 |
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High damping type, ﹛sp.-gr. 0.2-1.6, 0.3-1.6 (0-300mm range only)﹜ |
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320 |
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High damping type, ﹛sp.-gr. 0.05-0.4, 0.08-0.4 (0-500mm range only), 0.1-0.6 (0-300mm range only) |
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-1 |
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External chamber type, side-side flanged |
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-2 |
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External chamber type, side-bottom flanged |
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-3 |
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External chamber type, top-bottom flanged |
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-4 |
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External chamber type, top-side flanged |
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-5 |
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Internal float type, top flanged |
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-6 |
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Internal float type, side flanged |
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0 |
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None (applicable to type 310 or 320-6) |
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1 |
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Bonnet (side flanges) and chamber: Carbon steel |
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2 |
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Bonnet (side flanges) and chamber: SUS316 |
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7 |
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Bonnet (side flanges) and chamber: SUS304 |
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8 |
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Bonnet (side flanges) and chamber: SUS316L |
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V |
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Torque tube: Inconnel (350-400℃) (applicable to type 21 or 22 detector.) |
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H |
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Torque tube: Inconnel (200-350℃) (applicable to type 21 or 22 detector.) |
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Seal diaphragm: SUS316L (200-250℃) (applicable to type 31 or 32 detector.) |
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N |
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Torque tube: SUS316L (0-200℃) (applicable to type 21 or 22 detector.) |
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Seal diaphragm: SUS316L (-40~+200℃) (applicable to type 31 or 32 detector.) |
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C |
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Seal diaphragm: Hastelloy C (-40~+200℃) (applicable to the corrosion-proof of type 31 detector.) |
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L |
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Torque tube: SUS316L (-196~0℃) (applicable to type 21 or 22 detector.) |
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Seal diaphragm: SUS316L (-40~0℃) (applicable to type 31 or 32 detector.) |
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1 |
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JIS 10K (comply with 1984.) |
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2 |
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JIS 30K (comply with 1984.) |
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3 |
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ANSI 150 (comply with 1977.) |
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4 |
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ANSI 300 (comply with 1977.) |
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5 |
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ANSI 600 (comply with 1977.) (applicable to type 31 or 21 detector.) |
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Notes: |
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6 |
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JIS 63K (comply with 1984.) (applicable to type 31 or 21 detector.) |
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Special standard. |
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1)Measurements of specific gravity or boundary surface. |
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11/2” RF flanges (external chamber type only) |
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2 |
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2” RF flanges (external chamber type only) |
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For measurement of specific gravity or boundary surface, write suffix "Z" at the end of the basic model number. (For boundary surface measurement, mention the specific gravities of upper and lower liquids.) |
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3 |
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4” RF flanges (internal float type only) |
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4 |
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11/2” RTJ flanges (external chamber type only) |
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5 |
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2” RTJ flanges (external chamber type only) |
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6 |
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4” RTJ flanges (external chamber type only) |
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2) RTJ connection |
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03 |
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0~300mm |
Type 220 or 320 detector cannot be used for pressure ratings JIS63K, ANSI 600, and JPI 600 |
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The process connection flanges alone are of a ring joint type. (Applicable to ANSI 600 only) |
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05 |
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0~500mm |
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07 |
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0~700mm |
Type 220 or 320 detector can be used only for pressure ratings JIS10K, ANSI 150, and JPI 150 |
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10 |
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0~1000mm |
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15 |
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0~1500mm |
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20 |
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0~2000mm |
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25 |
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0~2500mm |
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30 |
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0~3000mm |
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A |
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PT ¼ internal thread (instruction plate: Japanese) |
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B |
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¼ NPT internal thread (instruction plate: English) |
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1 |
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0.2~1.0 kgf/cm2 |
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4 |
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3~15 PSI (20-100 KPA) |
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-X |
No options |
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-5 |
Elevation (applicable to type 310 or 320) |
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-6 |
suppression (applicable to type 310 or 320) |
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-7 |
With air-set |
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