Tek-Trol Tek-Bar 3120S User manual

Technology Solutions
Tek-Bar 3120S
Instruction Manual
Piezoresistive Pressure Transducer
Document Number: IM-3120S
www.tek-trol.com

© COPYRIGHT Tek-Trol LLC 2020
NOTICE
Read this manual before working with the product. For personal and system safety, and for optimum
product performance, make sure you thoroughly understand the contents before installing, using, or
maintaining this product.
For technical assistance, contact
Customer Support
796 Tek-Drive
Crystal Lake, IL 60014
USA
Tel: [phone]
www.tek-trol.com
No part of this publication may be copied or distributed, transmitted, transcribed, stored in a
retrieval system, or translated into any human or computer language, in any form or by any means,
electronic, mechanical, manual, or otherwise, or disclosed to third parties without the express
written permission. The information contained in this manual is subject to change without notice.

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Table of Contents
1Safety Instructions.............................................................................................................................. 2
1.1 Intended Use ...........................................................................................................................................2
1.2 Safety Instructions from the Manufacturer ..............................................................................................2
1.2.1 Disclaimer..................................................................................................................................................... 2
1.2.2 Product Liability and Warranty .................................................................................................................... 2
1.2.3 Information Concerning the Documentation .............................................................................................. 2
1.3 Safety Precautions ...................................................................................................................................2
1.4 Packaging, Transportation and Storage....................................................................................................3
1.4.1 Packaging ..................................................................................................................................................... 3
1.4.2 Transportation ............................................................................................................................................. 3
1.4.3 Storage ......................................................................................................................................................... 4
1.4.4 Nameplate.................................................................................................................................................... 4
2Product Description............................................................................................................................ 5
2.1 Introduction ............................................................................................................................................5
2.2 Measuring Principle .................................................................................................................................5
2.3 Technical Specifications ...........................................................................................................................5
2.4 Standard Pressure Range .........................................................................................................................6
2.5 Dimensional Drawings .............................................................................................................................7
2.6 Model Chart ............................................................................................................................................8
3Electrical Connection.......................................................................................................................... 9
3.1 Connection Diagrams...............................................................................................................................9
3.1.1 Connector DIN43650.................................................................................................................................... 9
3.1.2 Cable Outlet ............................................................................................................................................... 10
3.1.3 Connector M12X1 (4-pin) .......................................................................................................................... 10

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1Safety Instructions
1.1 Intended Use
The Tek-Bar 3120S Piezoresistive Pressure Transducer is a precision-engineered instrument, widely
used in industrial pressure instrument.
1.2 Safety Instructions from the Manufacturer
1.2.1 Disclaimer
The manufacturer will not be held accountable for any damage that happens by using its product,
including, but not limited to, direct, indirect, or incidental and consequential damages. Any product
purchased from the manufacturer is warranted by the relevant product documentation and our terms
and conditions of sale. The manufacturer has the right to modify the content of this document of any
time with any reason without prior notice and will not be answerable for the possible consequence
of changes.
1.2.2 Product Liability and Warranty
The operator shall have authority for the suitability of the device for the specific application. The
manufacturer accepts no accountability for the consequences of misuse by the operator. A wrong
installation or operation of the devices (systems) will cause the warranty to be void. The respective
Terms and Conditions of Sale, which forms the basis for the sales contract, shall also apply.
1.2.3 Information Concerning the Documentation
To prevent any injury to the operator or damage to the device, it is essential to read the information
in this document and the applicable national standard safety instructions. This operating manual
consists of all the information that is required in various stages, such as product identification,
incoming acceptance and storage, mounting, connection, operation and commissioning,
troubleshooting, maintenance, and disposal.
1.3 Safety Precautions
You must read these instructions carefully before installing and commissioning the device. These
instructions are an essential part of the product and must be kept for future reference. Only by
observing these instructions, optimum protection of both personnel and the environment, as well as
safe and fault-free operation of the device can be ensured. For additional information that is not
discussed in this manual, contact the manufacturer.

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The following safety symbol marks are used in this operation manual and on the instrument.
WARNING
Indicates a potentially hazardous situation which, if not avoided, could result in
death or severe injury
CAUTION
Indicates a potentially hazardous situation which, if not avoided, may result in minor
or moderate injury. It may also be used to alert against unsafe practices.
NOTE
Indicates that operating the hardware or software in this manner may damage it or
lead to system failure.
1.4 Packaging, Transportation and Storage
1.4.1 Packaging
The original package consists of
1. Tek-Bar 3120S Piezoresistive Pressure Transducer
2. Documentation
NOTE
Unpack and Check the contents for damages or sign of rough handling. Report
damage to the manufacturer immediately. Check the contents against the packing
list provided.
1.4.2 Transportation
•Avoid impact shocks to the device and prevent it from getting wet during transportation.
•Verify local safety regulations, directives, and company procedures with respect to hoisting,
rigging, and transportation of heavy equipment.
•Transport the product to the installation site using the original manufacturer’s packing whenever
possible.

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1.4.3 Storage
If this product is to be stored for an extended period of time before installation, take the following
precautions:
•Store your product in the manufacturer’s original packing used for shipping.
•The storage location should comply with the following requirements:
oFree from rain and water
oFree from vibration and impact shock
oAt room temperature with minimal temperature and humidity variation
•Before storing a used flow meter, remove any fluid from the flow meter line completely.
Properties of the instrument can change when stored outdoors.
1.4.4 Nameplate
The nameplate lists the order number and other important information, such as design details and
technical data.
NOTE
Check the device nameplate to ensure that the device is delivered according to your
order. Check for the correct supply voltage printed on the nameplate.

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2Product Description
2.1 Introduction
Tek-Bar 3120S Piezoresistive Pressure Transducer is made from a high-quality silicon piezoresistive
sensor. This Piezoresistive Sensor is packaged with stainless steel housing. The Tek-Bar 3120S
Piezoresistive Pressure Transducer is a precision-engineered instrument, widely used in industrial
pressure processes. Piezoelectric Pressure Sensors measure dynamic pressures. The compact and
rugged design makes this transmitter suitable for various applications such as process control systems,
hydraulic systems and valves, pumps, refrigeration and HVAC controls, level measurements,
compressor testing technologies, laboratory technologies, combustion engines, diesel engines, steam
turbines and test equipments. A wide range of processes and electrical connection options are available
to meet almost all requirements.
2.2 Measuring Principle
The Tek-Bar 3120S Piezoresistive Pressure Transducer consists of several thin wafers of silicon
embedded between protective surfaces. This protective surface is usually connected to a Wheatstone
bridge, for detecting small differences in resistance. The difference in pressure causes the resistance of
the piezoresistive sensor is change. Due to this change in resistance, a small amount of current is passed
through the sensor. The Wheatstone bridge determines this change.
2.3 Technical Specifications
Accuracy
±0.5% or 1.0% FSO
Thermal Effects
Temp Coeff-Zero: ±0.75%FSO
Temp Coeff-Span: ±0.75%FSO
Long Term Stability
±0.2%FSO/Year
Pressure Range
Pressure Ranges: -14.7 to 8000psi
Over Pressure: 1.5XFS
Process Temperature
Operating Temperature: -4˚F to 185˚F (-20˚C to 85˚C)
Compensated Temperature Range: 14˚F to 158˚F (-10˚C to 70˚C)
Storage Temperature: -40˚F to 257˚F (-40˚C to 125˚C)
Vibration
10G (20 to 2000Hz)
Shock
100G (10ms)
Cycles
10X10
6
Cycles
Output Signal
4 to 20mA
0 to 5VDC
1 to 5VDC
0 to 10VDC
Power Supply
10 to 36VDC
Load Resistance
For Current Output: <(Vs-12)/0.02A
For Voltage Output: >10kΩ

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Insulation Resistance
100MΩ@50VDC
Media Compatibility
All Media Compatible with 316L SS
Housing
304 SS
Diaphragm
316L SS
Oil Filling
Silicon Oil
Protection
IP65 (Standard)
IP66 (Only for Cable)
Weight
Approx. 185g
2.4 Standard Pressure Range
Pressure Page (psi)
Gauge
Sealed
Absolute
-14.7 to 0
*
-14.7 to 160
*
0 to 5
*
0 to 15
*
*
0 to 30
*
*
0 to 50
*
*
0 to 100
*
*
0 to 150
*
0 to 200
*
0 to 300
*
0 to 500
*
0 to 1000
*
0 to 3000
*
0 to 5000
*
0 to 8000
*
Note: Other pressure ranges available on request

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2.5 Dimensional Drawings
Fig 1: Connector DIN43650 Fig 2: Hirschman Cable Outlet
Fig 3: Cable Outlet with PVC – Cable Fig 4: M12X1, 4-Pin

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Mechanical Connections
Fig 5: Mechanical Connections
2.6 Model Chart
Example
Tek-Bar 3120S
0100
G
42
05
D
N1
Tek-Bar 3120S-0100-G-42-05-D-N1
Series
Tek-Bar 3120S
Piezoresistive Pressure Transducer
Pressure
Ranges
B015
-14.7 to 0psi
B160
-14.7 to 160psi
0005
0 to 5psi
0015
0 to 15psi
0030
0 to 30psi
0050
0 to 50psi
0100
0 to 100psi
0150
0 to 150psi
0200
0 to 200psi
0300
0 to 300psi
0500
0 to 500psi
1000
0 to 1000psi
3000
0 to 3000psi
5000
0 to 5000psi
8000
0 to 8000psi
Pressure Type
G
Gauge Pressure
A
Absolute Pressure
S
Sealed Pressure
Output signal
42
4 to 20mA
D5
0 to 5VDC
15
1 to 5VDC
10
0 to 10VDC
Accuracy
10
1.0% Full Scale
05
0.5% Full Scale
Electrical
Connection
D
Connector DIN43650
H
Hirschman Cable Outlet
C
Cable Outlet with PVC - Cable
M
M12X1, 4-Pin
Process
Connection
M2
M20X1.5 (Male)
N1
¼” NPT (Male)
G4
G1/4 (Male)
F4
G1/4 (Female)

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3Electrical Connection
This section covers the all electrical connection requirement. Electrical connection of the device must be
carried out by trained; qualified specialists authorized to perform such work by the installation site.
WARNING
•Connect all electrical cables when the power is switched off. If the device
does not have switch-off elements, then, overcurrent protection devices,
lightning protection and/or energy isolating devices must be provided by
the customer.
•The device must be grounded as per the regulations to protect personnel
against electric shocks.
NOTE
When using the measuring device in hazardous areas, installation must comply with the
corresponding national standards and regulations and the Safety Instructions or
Installation or Control Drawings.
3.1 Connection Diagrams
3.1.1 Connector DIN43650
Fig 6: Connection Diagram of Connector DIN43650
Table 1: Pin Description of Connector DIN43650
Pin
2-wire Current
3-wire Voltage
Supply +
1
1
Signal+
2
3
Ground
-
2

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3.1.2 Cable Outlet
Fig 7: Cable Outlet
Table 2: Pin Description of Cable Outlet
Pin
2-wire Current
3-wire Voltage
Supply +
Red
Red
Signal+
Black
Green
Ground
-
Black
3.1.3 Connector M12X1 (4-pin)
Fig 8: Connector M12X1 (4-pin)
Table 3: Pin Description of Connector M12X1 (4-pin)
Pin
2-wire Current
3-wire Voltage
Supply +
1
1
Signal+
2
3
Ground
-
2

TEKMATION LLC reserves the right to change the designs and/or materials of its products without notice. The contents of this publication are the property
of TEKMATION and cannot be reproduced by any other party without written permission. All rights reserved. Copyright © 2020 TEKMATION LLC
TEKMATION LLC DOC#TEK/PO/MNL/200704/3120S/r00.1
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