HK Instruments DPT2500-R8 Series Manuel d'instructions

DIFFERENTIAL PRESSURE TRANSMITTER

DPT-3wire EIGHT RANGE MODEL

Model summary

Each device has 8 jumper selectable measuring ranges. Each device is individually temperature compensated.

Model DPT2500 - R8 ( -D -AZ )

DPT7000 - R8 ( -D -AZ )

- R8 for 8 measuring range

- D for display

- AZ for autozero element

long term stability typical year

≤ ± Pa with AZ,

≤ ± 8 Pa without AZ; model 2500

≤ ± 24 Pa without AZ; model 7000

Model 2500

Model 7000

- 00…+ 00 Pa 0… 000 Pa

0… 00 Pa 0… 500 Pa

0…250 Pa 0…2000 Pa

0…500 Pa 0…2500 Pa

0… 000 Pa 0…3000 Pa

0… 500 Pa 0…4000 Pa

0…2000 Pa 0…5000 Pa

0…2500 Pa 0…7000 Pa

The Differential Pressure Transmitter is delivered individually packed with standard accessories (see

accessories).

Technical data

Response Time 0.8 / 4 s selectable by push button (see instructions below)

Bursting pressure 30 kPa (model 2500) 80 kPa (Model 7000)

Suitable media Air and non-aggressive gases

Measuring element Piezoresistive

Accuracy from range ± ,5% or (±6Pa <250 Pa)

(including: general accuracy, temperature drift, linearity, hysteresis and repetition error)

Electrical interface Supply voltage 24 VAC or VDC

(3-wire) Max. tolerance ± 0%

Power consumption < .0 W (< .5W with Iout 20mA)

Output signal 0… 0 VDC, Load R minimum kΩ or

4…20 mA, maximum load 500Ω

Materials Housing ABS

Cover PC

Pressure connections ABS

Duct connectors ABS

Tubing PVC, soft

Connections Electrical connections 4 screw terminals, max .5 mm

Cable entry M 6

Pressure connections Male ∅ 5,0 mm and 6,3 mm

Weight 50 grams, with accessories 290 grams

Dimensions 90,0 x 7 ,5 x 36,0 mm

General ambient condition

Temperature range

Operation - 0…+50°C (-5…+50°C for –AZ model)

Storage -20…+70°C

Ambient humidity 0 to 95% RH

Safety Protection standard IP54

Conformance Meets the requirements for CE marking:

EMC directive 89/336/EEC

Rohs Directive 2002/95/EY

Accessories

Standard accessories:

o2 fixing screws

o2 plastic duct connectors

o2 m tube ∅ 4 / 7 mm

Optional accessories:

oMetallic duct connectors

Zero-point adjustment

Note! Supply voltage must be connected one hour before the 0-point adjustment is carried out.

) Loose both tubes from the pressure inlets + and –

2) Push zero button > 4 seconds and the red led turns ON.

3) Wait until LED turns off and then install tubes again to the pressure inlets

It is recommended to adjust the zero point every 2 months during normal operation

* If the transmitter is equipped with automatic zero element the manual push button adjustment is not required.

Optional auto zero element *

Optional auto zero element makes the DPT transmitter maintenance free for

periodical push button zeroing. Element automatically adjusts the transmitters

zero point from time to time, this eliminates the zero point long term drift of the

piezoresistive sensing element.

Zero point adjustment is carried out every 0 minutes. During zero point

adjustment the output and display values will freeze to the latest measured

value. The automatic zero point adjustment takes 4 seconds.

Dimensions

DPT

71.5

95.0

90.0 36.0

Installation

Electrical Connection

0- 0V Output 0… 0 V

4-20mA Output 4…20 mA

24V Supply 24 VAC or VDC

GND Ground

4-20mA

ZERO

0,1/4s

500

1000 24VDC

GND

0-10V

4-20mA

24V

GND

24VDC / 24VAC

Output 4...20mA

Output 0...10V

Power supply

- 00…+ 00Pa 00Pa

250Pa 500Pa

1000Pa 1500Pa 2000Pa 2500Pa

Jumper 1

Jumper 2

Jumper 3

Jumper 1

Jumper 2

Jumper 3

RESPONSE TIME CHANGE: press the button shortly

ZEROING: press the button over 4 seconds

>4s

<1s

0,8s selected

4s selected

LED: long blink...

LED: 3 x short blink means

LED 2 x long blink means

Zeroing

Jumper 1

Jumper 2

Jumper 3

LED

000Pa 500Pa

2000Pa 2500Pa

3000Pa 4000Pa 5000Pa 7000Pa

Jumper 1

Jumper 2

Jumper 3

Jumper 1

Jumper 2

Jumper 3

Ce manuel convient aux modèles suivants

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