ADT681 series Digital Pressure Gauge
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- Pressure ranges to 36,000 psi (2500 bar)
- 0.025%, 0.05%, 0.1% or 0.2% FS accuracy
- % pressure indication with fan-shaped graph scale for visual reference
- Fully temperature compensated accuracy
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With advanced microprocessor technology and state-of-the-art silicon pressure sensors, ADT681 series digital pressure gauges provide an accurate, reliable, and economic solution for wide range of pressure applications.
They are packed with functionality and remarkably easy to use. To reach the best performance, every silicon pressure sensor in gauges is specially aged, tested and screened before assembly.
ADT681 series digital pressure gauges are unmatched in performance and reliability. Best of all, they are surprisingly affordable.
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Features
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- Pressure ranges to 36,000 psi (2500 bar)
- 0.025% full scale accuracy (ADT 681-02)
- 0.05% full scale accuracy (ADT 681-05)
- 0.1% full scale accuracy (ADT 681-10)
- 0.2% full scale accuracy (ADT 681-20)
- Fully temperature compensated accuracy from14°F to 122°F (-10°C to 50°C)
- Up to eleven selectable pressure units
- Large, easy to read display with 5-digit resolution
- Back lighted display
- % pressure indication with fan-shaped graph scale for visual reference
- Display flash warning when pressure over 120% of FS
- ATEX certified intrinsically safe (Model ADT 681IS)
- NIST traceable calibration
- 9V battery power or AC adapter (optional)
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Applications
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- Precision pressure measurement
- Field gauge calibration
- Pressure safety valve (PSV) testing
- Pressure regulator testing
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Model
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ADT 681: Regular gauge
ADT 681IS: ATEX certified intrinsically safe
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Accuracy
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ADT 681(IS)-02: 0.025% of full scale
ADT 681(IS)-05: 0.05% of full scale
ADT 681(IS)-10: 0.1% of full scale
ADT 681(IS)-20: 0.2% of full scale
(For detail accuracy, please see pressure range table)
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Gauge Types
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Gauge pressure
Compound pressure
Absolute pressure
Differential pressure
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Fan-shaped Graph Scale
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Similar to analog dials, including pressure swing, % indication with fan-shaped graph scale
for visual reference, low/high alarm
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Display
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Description: 5 full digit FSTN LCD
Display rate: 3 readings per second (Default setting).
Adjustable from 10 readings per second to 1 reading every ten seconds
Numeral display height: 16.5mm (0.65¡±)
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Models and Accessories
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Optional Accessories
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Model Number
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Description
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9812
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110V/220V external power adapter (DC 9V) for 681 digital pressure gauge.
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9502
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Additel/Log II real time logging and graphical software for ADT681 and ADT672.
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9050
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USB to RS232 (DB9/M) Adapter
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9900-681
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Carrying Case for one ADT681 digital pressure gauge
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Gauge Pressure [1] °ÔÀÌÁö ¾Ð·Â
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P/N
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Pressure Range
(psi)
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Pressure Range
(bar)
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Media[2]
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Accuracy
(% FS)
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Burst
Pressure
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V15
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-15
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-1.0
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G
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0.025(0.05, 0.1, 0.2)
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3X
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CP2
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2
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0.16
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G
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0.05(0.1, 0.2)
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3X
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CP5
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5
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0.35
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G
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0.025(0.05, 0.1, 0.2)
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3X
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CP10
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10
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0.7
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G
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0.025(0.05, 0.1, 0.2)
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3X
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CP15
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15
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1.0
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G,L[3]
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0.025(0.05, 0.1, 0.2)
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3X
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CP30
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30
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2.0
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G,L[3]
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0.025(0.05, 0.1, 0.2)
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3X
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CP50
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50
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3.5
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G, L
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0.025(0.05, 0.1, 0.2)
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3X
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CP100
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100
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7.0
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G, L
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0.025(0.05, 0.1, 0.2)
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3X
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CP300
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300
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20
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G, L
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0.025(0.05, 0.1, 0.2)
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3X
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CP500
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500
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35
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G, L
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0.025(0.05, 0.1, 0.2)
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3X
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CP1K
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1,000
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70
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G, L
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0.025(0.05, 0.1, 0.2)
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3X
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CP3K
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3,000
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200
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G, L
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0.025(0.05, 0.1, 0.2)
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3X
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CP5K
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5,000
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350
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G, L
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0.025(0.05, 0.1, 0.2)
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3X
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CP10K
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10,000
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700
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G, L
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0.025(0.05, 0.1, 0.2)
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3X
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CP15K
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15,000
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1,000
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G, L
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0.1(0.2)
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2X
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CP25K
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25,000
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1,600
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G, L
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0.1(0.2)
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1.5X
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CP30K
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30,000
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2,000
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G, L
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0.1(0.2)
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1.5X
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CP36K
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36,000
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2,500
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G, L
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0.1(0.2)
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1.5X
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Absolute Pressure Àý´ë ¾Ð·Â
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P/N
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Pressure Range
(psi)
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Pressure Range
(bar)
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Media[2]
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Accuracy
(% FS)
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Burst
Pressure
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AP5
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5
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0.35
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G
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0.1 (0.2)
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3X
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AP10
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10
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0.7
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G
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0.1 (0.2)
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3X
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AP15
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15
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1.0
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G
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0.1 (0.2)
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3X
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AP30
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30
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2.0
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G
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0.1 (0.2)
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3X
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AP50
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50
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3.5
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G
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0.1 (0.2)
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3X
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AP100
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100
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7.0
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G, L
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0.1 (0.2)
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3X
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AP300
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300
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20
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G, L
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0.1 (0.2)
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3X
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AP500
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500
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35
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G, L
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0.1 (0.2)
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3X
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AP1K
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1,000
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70
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G, L
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0.1 (0.2)
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3X
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AP3K
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3,000
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200
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G, L
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0.1 (0.2)
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3X
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AP5K
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5,000
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350
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G, L
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0.1 (0.2)
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3X
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Differential Pressure Â÷µ¿ ¾Ð·Â
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P/N
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Pressure Range
(psi)
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Pressure Range
(bar)
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Media[2]
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Accuracy
(% FS)
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Burst
Pressure
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DP1
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1
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2.5
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G
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0.4
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100X
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DP2
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2
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5.0
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G
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0.2
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100X
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DP5
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5
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10
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G
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0.1
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50X
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DP10
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10
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25
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G
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0.1
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20X
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DP20
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20
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50
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G
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0.05
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20X
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DP30
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30
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100
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G
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0.05
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20X
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Compound Pressure º¹ÇÕ ¾Ð·Â
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P/N
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Pressure Range
(psi)
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Pressure Range
(bar)
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Media
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Accuracy
(% FS)
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Burst
Pressure
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CP2
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±2
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±0.16
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G
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0.05(0.1, 0.2)
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3X
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CP5
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±
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±0.35
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G
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0.025(0.05, 0.1, 0.2)
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3X
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CP10
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±
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±0.7
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G
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0.025(0.05, 0.1, 0.2)
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3X
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CP15
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±
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±1
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G
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0.025(0.05, 0.1, 0.2)
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3X
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CP30
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-15 to 30
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-1 to 2
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G
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0.025(0.05, 0.1, 0.2)
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3X
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Note: [1]. Sealed gauge pressure for above 1000 psi
[2]. G=Gas, L=Liquid
[3]. 0.025% FS for gas media only
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Pressure Units
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Pa, kPa, MPa, psi, bar, mbar, kgf/cm2, inH2O, mmH2O, inHg, mmHg
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Environmental
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Compensated Temperature: 14°F to 122°F (-10°C to 50°C)
Operating Temperature*: 14°F to 122°F (-10°C to 50°C)
* 0.025%FS accuracy guaranteed only over the ambient temperature range of 68°F to 79°F
(20°C to 26°C)}
Storage Temperature: -4°F to 158°F (-20°C to 70°C)
Humidity: <95%
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Media Compatibility
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0 - 30 psi: Clean dry non-corrosive gases
50 - 36,000 psi: media compatible with 316L SS
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Pressure PortPower
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1/4¡±NPT (¡Â15,000 PSI)
Autoclave F-250-C, 9/16" - 18 UNF female or Autoclave M-250-C, 9/16"-18 UNF male
(£¾15,000 PSI)
0.156 inch (Ø4 mm) test hose (for differential pressure)
Other connections available per request
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Power
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Battery: One 9V alkaline battery (included)
Battery life: 300 hours (10 readings/s), 600 hours (3 reading/s), or 6000 hours (1 reading/10s)
Power auto-off: 60 minutes power auto-off. Auto-off may be disable
External power: 110/220V external power adapter (optional)
(Do not use the external power adapter in a hazardous atmosphere)
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Enclosure
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Case material: Aluminum alloy
Wetted parts: 316L SS
Dimension: ¥Õ110mm X 35mm depth X 176mm height
Weight: 0.6kg
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Intrinsic Safety and European Compliance
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CE marked
ATEX certified intrinsically safe (ADT 681IS)
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Communication
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RS232 (Do not use the RS-232 connector in a hazardous atmosphere)
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