H138 Slim-line, Short stroke Linear Position Sensor


CSA Approved Intrinsically Safe sensors for Hazardous DUST atmospheres
Available in any travel from 51mm to 100mm.


The intrinsically safe H138 LIPS® (Linear Inductive Position Sensor) incorporates electronics system EX06 which is CSA approved for use in potentially explosive gas/vapour and dust atmospheres. The H138 is designed for a wide range of industrial applications and is ideal for OEMs seeking good sensor performance in situations where a small diameter, short-bodied sensor is required for operation in hazardous areas. The unit is compact and space-efficient, being responsive along almost its entire length, and like all Positek® sensors provides a linear output proportional to displacement. Each unit is supplied with the output calibrated to the travel required by the customer, from 51 to 100mm and with full EMC protection built in. Overall performance, repeatability and stability are outstanding over a wide temperature range. The sensor has a compact 19mm diameter stainless steel body, is easy to install and set up. The stainless steel mounting flange has two 3.2 mm by 30 degree wide slots on a 25 mm pitch. The stainless steel plunger can be supplied free or captive, with female M4 thread, or springloaded with a ball end. The H138 also offers a range of mechanical options, environmental sealing is to IP67.

Positek intrinsically safe sensors are designed to be used with a galvanically isolated amplifier .  Approved galvanic isolation amplifiers (G005) are available from Positek; there is a choice of 0.5-9.5V or 4-20mA transmission outputs.

The sensor can be installed with a cable length up to 1km between the sensor and the amplifier.


Specification

Intrinsic Safety

 

CSA approval

CSA approved to; Class I, Zone 0
AEx ia IIC T4 (Ta = -40°C to +80°C)
AEx iaD IIIC T93°C(Ta = -40°C to +80°C)
Designates the sensor as belonging to; Class I, Zone 0:
suitable for all areas except mining, : can be used in areas
with continuous, long or frequent periods of exposure to
hazardous gas or dust
Gas:
Protection class ia IIC, denotes intrinsically safe for Zones
0, 1 & 2 and IIA, IIB and IIC explosive gases.
Temperature class T4: maximum sensor surface
temperature under fault conditions 135°C.
Dust:
T93°C: maximum sensor surface temperature under fault
conditions 93°C.
Ambient temperature range extended to -40°C to +80°C.

Galvanic Isolation Amplifier

It is imperative Positek® intrinsically safe sensors be used in
conjunction with a galvanic barrier to meet the requirements
of the product certification. The Positek G005 Galvanic
Isolation Amplifier is purpose made for Positek IS sensors
making it the perfect choice. Refer to the G005 datasheet for
product specification and output configuration options.

The Positek® G005 Galvanic Isolation Amplifier is available with 0.5 - 9.5V
or 4 - 20mA transmission output options or reverse outputs of 9.5 - 0.5
volts or 20 - 4 mA

Sensor Specification

 

Dimensions

 

Body Diameter

19mm

Travel

any stroke from 51mm to 100mm (eg 76mm)

Independant Linearity

<±0.25% @ 20°C
<±0.1% available on request

Temperature Coefficient

<±0.01%/°C Gain & <±0.01%FS/°C Offset

Resolution

Infinite

Noise

<0.02% FSO

Frequency Response

>10KHz (-3dB)

 

 

Temperature Limits

 

Operating

-40 to + 80°C

Storage

-40 to + 125°C

EMC Performance

 

Susceptibility

EN 61000-6-2

Radiated

EN 61000-6-3

 

 

Vibration

IEC 68-2-6: 10g

Shock

IEC 68-2-29: 40 g

MTBF

350,000 hrs 40°C Gf

Sealing

IP67

 

 

Electrical Connections

Screened 3 core cable or M8 4 pin connector

Detailed Dimensions

Refer to drawings below.

Galvanic Isolation Amplifier

Click for pdf

Outline

Click for pdf
Request AutoCAD Drawing
Datasheet Click for pdf
Installation Sheet Click for pdf


Preferences

Positek offers a range of options for its standard sensors.
Each sensor is manufactured to suit each customer's preferences.
If your requirement is outside the options given below,
Positek can modify/ redesign a sensor to suit your specific requirement.
Standard options are available as below:

 

Measurement range:

Factory set to any length from 51mm to 100mm in increments of 1mm.
For example, if your application requires 3" (76 mm) measurement
then Positek will manufacture the sensor specifically for this length.
The mechanical length and calibration will be set up for 76 mm.



Connector/Cable Options:

Option code
Connector, Axial, IP67, M8 4 pin
J
Cable, Axial Gland IP67
L
Cable length - The standard length of cable supplied with a Positek position sensor is 50cm although you can specify any length you require, up to a maximum of 15000cm.
Specified in cm after the L
e.g. L200 for 200cm cable from axial cable gland

Mounting:
Option code
Front flange mount (not optional, must be fitted)
N
Body clamps
P

Plunger Options:
Option code
Spring loaded (extended)
R
Dome end on plunger
T
Non captive plunger (not with Options 'R' or 'T')
V

<+/-0.1% FSO Linearity error
Z650

Click Here For Approved Galvanic Isolation Amplifier Options

 

 

 

Free Design Service

If you need a position sensor that is outside the scope of the above options to suit your installation requirement or specification, Positek will be happy to modify or create a new design to suit your needs


Contact Positek Technical Department - Click Here

 


 

Get Price


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  Positek Limited

L6 The Link   Andoversford Industrial Estate   Cheltenham   Glos GL54 4LB   UK
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