Kobold Model Specifications

Heavy Duty

Pressure Transmitter

measuring

•

monitoring

•

analyzing

PAS

●● Span: -14.5 … 21.7 PSIG up to 0…8700 PSIG

●● t

: 248 °F

max

●● Process Connection: ½" NPT, or

Various Diaphragm Seals on Request

●● Material: 316L Stainless Steel

●● Output: 4 ... 20 mA

●● Sensor Input: Gauge or Absolute Pressure

●● Self-Diagnostic Function: Sensor, Memory A/D

Converter, Power etc.

●● Digital Communication with HART

KOBOLD companies worldwide:

ARGENTINA, AUSTRALIA, AUSTRIA, BELGIUM, BULGARIA, CANADA, CHILE, CHINA, COLOMBIA,
CZECH REPUBLIC, EGYPT, FRANCE, GERMANY, HUNGARY, INDIA, INDONESIA, ITALY, MALAYSIA,
MEXICO, NETHERLANDS, PERU, POLAND, REPUBLIC OF KOREA, ROMANIA, SINGAPORE, SPAIN,
SWITZERLAND, TAIWAN, THAILAND, TUNISIA, TURKEY, UNITED KINGDOM, USA, VIETNAM

01/12- 2016

®

Protocol

KOBOLD Instruments, Inc.
1801 Parkway View Drive
Pittsburgh, PA 15205

Main Ofce:

1.412.788.2830

1.412.788.4890
[e-mail]
www.koboldusa.com

Heavy Duty Pressure Transmitter Model PAS

Description

The KOBOLD Pressure Transmitter model PAS is a
microprocessor based high performance transmitter, which
has a scalable pressure calibration and output signal. It
automatically compensates for ambient temperature and
process variables. Communication with the instrument and
configuration of various parameters is possible via HART®
protocol. All of the sensor's data is input, modified and stored
via EEPROM.

Features

Superior Performance

●O High Reference Accuracy:

±0.075 % of Calibrated Span

●O Long-term Stability

●O High Rangeability (100 : 1)

Flexibility

●O Data configuration with HART

●O Measurement of gauge or absolute pressure

®

configurator

Reliability

●O Continuous self-diagnostic function

●O Automatic ambient temperature compensation

●O EEPROM write-protection

●O Fail-mode process function

Transmitter Description

Electronics Module

The Electronics module consists of a circuit board sealed in
an enclosure. There is an MCU module, an analog module,
an LCD module, and a terminal module within the transmitter.
The MCU module acquires the digital value from the analog
module and applies correction coefficients selected from
EEPROM. The output section of the MCU module converts
the digital signal to a 4…20 mA output. The MCU module
communicates with the HART®-based configurator or control
system, such as DCS (Distributed Control System). The
power section of the MCU module has a DC-to-DC power
conversion circuit and an input/output isolation circuit. The
LCD module plugs into the MCU module and displays the
digital output in a user configured unit.

Sensor Inputs

The pressure transmitter model PAS is available as a piezo­resistive pressure transmitter which measures gauge pressure
as well as absolute pressure. The sensor module converts
the resistance into a digital value. The MCU module calculates
the process pressure based on this digital value.

Functional Block Diagram

Sensor Part

A/D-Conversion

EEPROM

Piezoelectric sensor

• Gauge pressure

• Absolute pressure

2

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MCU Part

Microprocessor

· Input Sensor Value

· Engineering Units

· Re–range (Zero / Span)

· Zero Point Adjustment

· DA Trimming

· Damping / Filtering

·

LCD Engineering Mode

· Diagnostics

· Self Compensation

· Communications

· LCD Display

· Configuration Data

4~20mA

DAC

®

HART

HART® Protocol
with Host

No responsibility taken for errors;

subject to change without prior notice.

Heavy Duty Pressure Transmitter Model PAS

The sensor modules include the following features:

• The software of the transmitter compensates for thermal
effects, improving performance.

• Precise Input Compensation during operation is achieved
with temperature and pressure correction coefficients that
are characterized over the range of the transmitter and
stored in the sensor module's EEPROM memory.

• EEPROM stores sensor information and correction
coefficients separately from the MCU module, allowing for
easy repair, reconfiguration and replacement.

Basic Setups

The following settings can be easily configured from any host
that can support HART® protocol:

• Operational parameters

• 4 … 20 mA (zero points/span)

• Engineering units

• Damping time: 0.25…60 sec.

• Tag: 8 alphanumeric characters

• Descriptor: 16 characters

• Message: 32 characters

• Date: day/month/year

Calibration and Adjustment

• Lower/Upper range (zero/span)

• Sensor zero adjustment

• Zero point adjustment

• DAC output adjustment

• Transfer function

• Self-compensation

Self-Diagnostics and Others

• CPU & Analog Module Fault Detection

• Communication error

• Fail-mode handling

• LCD indication

• Temperature measurement of sensor module

Process Connection via Diaphragm Seals

For connecting the model PAS to different process
connections, diverse diaphragm seal versions are necessary.
They can be connected to the pressure transmitter directly or
via a capillary tube. Depending on the application; different
combinations of diaphragm seals, capillary tubes and fill
fluids are possible. To clarify those possibilities, the special
connections via diaphragm seals should be requested
separately from the pressure transmitter.

No responsibility taken for errors;
subject to change without prior notice.

www.koboldusa.com

3

Heavy Duty Pressure Transmitter Model PAS

Technical Details

Measuring Principle: Piezoresistive Sensor
Measuring Span: -14.5…21.7 PSIG up to 0…8700

(Depending on instrument version),
zero and span values can be set
anywhere within the range limits.
Span must be greater than or
equal to the minimum span.

Accuracy: 0.075 % of calibrated span
Process Temperature: -40...248 °F

(Approval codes may effect limits.
Max. ambient temperature at
LCD = 176 °F.)

Ambient Temperature: -22…176 °F
Storage Temperature: -40…185 °F

(Non-condensing)

Humidity Limit: 5 %...98 % RH

Pressure Limits (with Silicone Oil)

(Valid for stand-alone unit only, without assembled
diaphragm seals.)

Model G -14.5...43.5 PSIG (for Range 3)

-14.5...435 PSIG (for Range 4)

0...1552.5 PSIG (for Range 5)

0...5800 PSIG (for Range 6)

0...10875 PSIG (for Range 7)

Model A 0...72.5 PSIG (for Range 4)

0...435 PSIG (for Range 5)

0...754 PSIG (for Range 6)

Maximum Load: 250 Ω at 17.5 V

550 Ω at 24 V

Max. loop resistance =

DC

DC

(U - 12 VDC)

0.022 A

Electrical Connection: ½" NPT conduit with M4

screw terminals,
G ½ conduit with M4 screw
terminals

Output: Two wire 4…20 mA,
user-configurable for linear output,
digital process value superimposed
on 4…20 mA signal, available
to any host that conforms to the
HART® protocol

Update Time: 0.12 seconds
Turn-On Time: 3 seconds
Protection: IP 67 for standard (code S)
Weight: 3.8 lbs (excluding options)

6.3 lbs (st. steel housing option)
Failure Mode: Fail high: current ≥ 21.1 mA

Fail low: current ≤ 3.78 mA

EMC Conformity
Standards: EMI (emission) - EN 50081-2:1993

EMS (immunity) - EN 50082-2:1995

ATEX Approval
(Option): II 2G Exd IIC T6...T4

Wetted Materials
Isolating Diaphragms: 316L Stainless Steel

Connection Thread: 316 Stainless Steel

Non-wetted Materials
Fill Fluid: Silicone oil

Electronics Housing: Aluminum, flameproof (Ex d)
and waterproof (lP 67),
316 L SS (option)

Cover O-ring: NBR
Paint: Epoxy-polyester or polyurethane
Mounting Bracket: 2-inch pipe, 304 SS, painted

carbon steel with 304 SS U-bolt

Nameplate: 304 Stainless steel

Process Connections: ½" NPT female
Mounting Position: Upright
Display: 5 Digit LCD
Power Supply: 12 … 45 VDC -operation

17.5 … 45 VDC -HART®

communications

Technical Data for Version with 50 mm Extended
Diaphragm

(Model PAS-P, Engineered for the Paper/Pulp Industry)

Application: Level and gauge pressure
measurement

Accuracy: ± 0.2% of calibrated span @ 68 °F

Long Term Stability: Application dependent, typically

± 0.125% of URL / 1 year

Process Temperature: 68...95 °F

Ambient Temperature: 68...95 °F

Materials:

O-ring: FKM

Extended Sleeve: 304 Stainless Steel

Process Connection: 316-Ti / 316 Stainless Steel

Other Specifications: Same as standard models

No responsibility taken for errors;

4

www.koboldusa.com

subject to change without prior notice.

Heavy Duty Pressure Transmitter Model PAS

Order Details (Example: PAS- G EE 3 S 4 N S0 0):

Model Version

..G.. = Gauge Pressure

PAS-

..A.. = Absolute Pressure

..EE.. = 316L st. st. / 316 st. steel

Order Details Continued:

Material

Diaphragm/Other

Measuring Range Measuring Span

for PAS-G

..3.. = -14.5...21.7 PSIG

..4.. = -14.5...217 PSIG

..5.. = 0...725 PSIG

..6.. = 0...3625 PSIG

..7.. = 0...8700 PSIG

6 W.C....36.3 PSIG

60 W.C....232 PSIG

200 W.C....725 PSIG

36.3 PSIG...3625 PSIG

87 PSIG...8700 PSIG

for PAS-A

..4.. = 0...36 PSIA

..5.. = 0...217 PSIA

..6.. = 0...362 PSIA

10 W.C....36.3 PSIA

60 W.C....217 PSIA

100 W.C....362 PSIA

Fill Liquid

Process

Connection

Electrical

Connection

Approvals Options

..0 = without

..N.. = ½" NPT epoxy-

polyester painted
aluminium

..S.. = silicone ..4.. = ½" NPT female

..G.. = G ½ epoxy-

polyester painted
aluminium

1)

Diaphragm seal model and application data to be clearly specified. The application Index on page 17-18 must be completed.

For summary of diaphragm seal models and possible ranges, see page 9 onwards. For dimensional details see DRM data sheet.

..S0.. = standard

(waterproof IP 67)

..F0.. = ATEX, flameproof,

Ex d

..E = oil free finish

..M = housing in stainless steel

..N1) = mounting of PAS onto

diaphragm seal

Order Details Mounting Brackets:

Description Order Number

Angle type bracket for PAD/PAS
vertical pipe mounting for PAS
vertical pipe mounting for PAD
incl. U-Clamp for 2“ pipe mounting bracket and 2 x mounting nuts/ washers
incl. 4 x mounting screws for PAS
incl. 4 x mounting screws for PAD

Flat type bracket for PAD/PAS
horizontal pipe mounting for PAS
vertical pipe mounting for PAD
incl. U-Clamp for 2“ pipe mounting bracket and mounting nuts/ washers
incl. 4 x mounting bolts and washers for PAS
incl. 4 x mounting bolts for PAD

ZUB-PAD/PAS-K

ZUB-PAD/PAS-L

Order Details Manifold Valve:

Description Order Number

2-way Manifold Valve, Direct Mount, Machined

No responsibility taken for errors;
subject to change without prior notice.

www.koboldusa.com

V-2003CDADABAA

5

Heavy Duty Pressure Transmitter Model PAS

Order Details for PAS-..P Extended Diaphragm Version for Paper/Pulp Industries (Example: PAS-P ES 3 S A N S 0 0)

Model

PAS-P..

..ES.. = 316 SS / 304 SS,

316L SS, 316-Ti SS

Material Measuring Ranges

Diaphragm/Other Code Measuring Range Measuring Span

..3.. -10,000 mm H2O...15,000 mm H2O 150 mm H2O...15,000 mm H2O

..4.. -10,000 mm H2O...150 m H2O 1,500 mm H2O...150 m H2O

Order Details Continued

Filling Liquid Process Connection Electrical Connection Approval Manifold Valve Options

..N.. = 1" Class 150 RF

..P.. = 1-1/4" Class 150 RF

..S.. = Silicone

..Q.. = 1-1/2" Class 150 RF

..R.. = 2" Class 150 RF

..S.. = 2-1/2" Class 150 RF

..T.. = 3" Class 150 RF

..U.. = 4" Class 150 RF

..V.. = 5" Class 150 RF

..W.. = 6" Class 150 RF

..N.. = 1/2" NPT epoxy-polyester

painted aluminum

..G.. = 1/2" epoxy-polyester
painted aluminum

..S.. = without,
standard,
(waterproof
IP 67)

..0.. = without ..0 = without

No responsibility taken for errors;

6

www.koboldusa.com

subject to change without prior notice.

Dimensions

86

LOCK

LOCK

FIELD

TERMINALS

s

73 39

112

160.5

-

N

E

I

V

I

L

S

O

P

A

M

T

O

E

X

R

E

H

E

S

P

AF 30

32.5

M6X1 DP9

4PLS

LOCK

LOCK

FIELD

TERMINALS

s

73 39

112

160.5

IN

Drain

IN

Drain

148

Ø

30

VENT.

IS

O

L

A

T

E

Standard Model

Heavy Duty Pressure Transmitter Model PAS

3.39"

I

T

O

U

N

A

-

C

-

I

D

E

Z

I

G

R

E

N

E

E

L

I

H

W

N

E

P

O

N

E

X

P

L

O

S

I

V

E

A

T

M

O

S

P

H

E

R

E

T

D

O

O

N

32.5

1.28"

4.41"

112

2.87" 1.54"

73 39

s

TERMINALS

LOCK

LOCK

FIELD

160.5

6.32"

AF 30

2-way Manifold Valve: (Direct Mount, Machined) V-2003CDADABAA (PTFE Packing)

(Inlet: ½" NPT Female / Outlet: ½" NPT Male)

Technical Details
Material: AISI 316L
Pressure Rating: 6 000 psi
Temperature Range: -99...410 °F (PTFE Packing), Standard

-65... 950 °F (GRAPHOIL Packing), On Request
Weight: 1.94 lbs

VENT.

Drain

IN

5.83"

148

Included Accessories: Plug

No responsibility taken for errors;
subject to change without prior notice.

IS

O

A

L

E

T

30

1.18"

Ø

4.73"

120

OUT IN

Drain 1/4" NPT-F

with plug

www.koboldusa.com

7