HK Instruments DPT100 User manual

DIFFERENTIAL PRESSURE TRANSMITTER
DPT-3wire
Model summary
Each device has 2 or 4 jumper selectable measuring ranges. Each device is individually temperature compensated.
2 range model
- D for display
- AZ for autozero element
- Q for square root output
Measuring
range
Measuring
range 2
Accuracy %/FS )
over operation
temp.
- 0…+50°C
range 1 and range 2
Long term stability
typical 1 year
-AZ without -AZ
DPT100 ( -D -AZ -Q) 0…50 Pa 0…100 Pa ± 3% ≤ ± 1 Pa ≤ ± 8 Pa )
DPT±100 ( -D -AZ -Q) -50…+50 Pa -100…+100 Pa ± 1,5% ≤ ± 1 Pa ≤ ± 8 Pa )
DPT250 ( -D -AZ -Q) 0…100 Pa 0…250 Pa ± 1,5% ≤ ± 1 Pa ≤ ± 8 Pa )
DPT500 ( -D -AZ -Q) 0…250 Pa 0…500 Pa ± 1,5% ≤ ± 1 Pa ≤ ± 8 Pa
DPT1000 ( -D -AZ -Q) 0…500 Pa 0…1000 Pa ± 1,5% ≤ ± 1 Pa ≤ ± 8 Pa
DPT2,5K ( -D -AZ -Q) 0…1500 Pa 0…2500 Pa ± 1,5% ≤ ± 1 Pa ≤ ± 24 Pa
DPT5K ( -D -AZ -Q) 0…2500 Pa 0…5000 Pa ± 1,5% ≤ ± 1 Pa ≤ ± 24 Pa
4 range model
- R4 for 4 measuring range
- D for display
- AZ for autozero element
- Q for square root output
range range
2
range
3
range
4
Accuracy %/FS )
over operation temp.
- 0…+50°C
range 1…4
Long term stability
typical 1 year
-AZ without -AZ
DPT1000 -R4 ( -D -AZ -Q) 250Pa 500 Pa 750 Pa 1000Pa ± 1,5% ≤ ± 1 Pa ≤ ± 8 Pa
DPT3000 -R4 ( -D -AZ -Q) 750Pa 1500Pa 2250Pa 3000Pa ± 1,5% ≤ ± 1 Pa ≤ ± 24 Pa
DPT5000 -R4 ( -D -AZ -Q) 1250Pa 2500Pa 3750Pa 5000Pa ± 1,5% ≤ ± 1 Pa ≤ ± 24 Pa
) %/FS from highest pressure range (including: general accuracy, temperature drift, linearity, hysteresis and repetition
error)
) -AZ model recommended
The Differential Pressure Transmitter is delivered individually packed with standard accessories (see
accessories).

Technical data
Response Time 0.8 / 4 s selectable by jumper
Max. pressure 25 kPa
Bursting pressure 50 kPa
Suitable media Air and non-aggressive gases
Measuring element Piezoresistive
Electrical interface Supply voltage 24 VAC or VDC
(3-wire) Max. tolerance ± 10%
Power consumption < 1.0 W (<1.5W with Iout 20mA)
Output signal 0…10 VDC, Load R minimum 1kΩ or
4…20 mA,
maximum load 500Ω
Materials Housing ABS
Cover ABS
Pressure connections ABS
Duct connectors ABS
Tubing PVC, soft
Connections Electrical connections 4 screw terminals, max 1.5 mm
2
Cable entry M16
Pressure connections Male ∅ 5,0 mm and 6,3 mm
Weight 150 grams, with accessories 290 grams
Dimensions 90,0 x 71,5 x 36,0 mm
General ambient condition
Temperature range
Operation -10…+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.
1) Loose both tubes from the pressure inlets + and –
2) Push zero button until 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 12 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 10 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
HK INSTRUMENTS OY
FIN-40950 MUURAME FINLAND
Pa
DPT
71.5
95.0
90.0 36.0

Installation
Electrical Connection:
0-10V Output 0…10 V
4-20mA Output 4…20 mA
24V Supply 24 VAC or VDC
GND Ground
Push button for zero
Zero: Push button zero
ZERO
0,8/4s
500
1000
2-range model
e.g. DPT1000
The pressure values on
the sticker depends on the model
500Pa 1000Pa
0,8s
4s
jumper
without
jumper
Jumpers
4-20mA
ZERO
0,1/4s
500
1000 24VDC
GND
0-10V
Jumpers
ZERO
0,8/4s
Jumper 2
Jumper 3
4-range model
e.g. DPT1000-R4
0,8s 4s
250Pa 500Pa 750Pa 1000Pa
250Pa 500Pa 750Pa 1000Pa
The range sticker located inside the lid
Pressure values depends on the model (e.g. DPT1000-R4)
Jumper 2
Jumper 3
Jumpers