Measurement Computing DPG Series Manuale utente

Instruction Manual

DPG-Series Inclinometer

MEAS Deutschland GmbH www.meas-spec.com phone: +49-(0)231-9740-0

Hauert 13, D-44227 Dortmund, Germany 1 of 15 fax: +49-(0)231-9740-20

July 2015

Instruction Manual

DPG-Series

Inclinometer

Version 1.1

Instruction Manual

DPG-Series Inclinometer

MEAS Deutschland GmbH www.meas-spec.com phone: +49-(0)231-9740-0

Hauert 13, D-44227 Dortmund, Germany 2 of 15 fax: +49-(0)231-9740-20

July 2015

Contents

1History 3

2General Information 3

2.1 Features 3

2.2 Type and order codes 3

3General Information 3

3.1 Notice 4

4General of the inclinometer system 5

4.1 Description of the liquid/conductive measurement principle 5

5Mechanics and Conditions 6

5.1 Mounting Instructions 6

5.2 Installation 6

5.3 Measurement 6

5.4 Mounting 6

5.5 Mechanical data 6

5.6 Dimensions 7

5.7 Label information 8

5.8 Cable and configuration 8

5.9 Connecting to a PC using an RS 232 interface 9

6Interface 10

6.1 Digital Output RS232 10

6.1.1 Electrical Levels 10

6.1.2 Interface parameter for all NS–xx/DPG2–RUx (except NS–30/DPG2-RUN) 10

6.1.3 Interface parameter for NS–30/DPG2–RUN 10

6.2 Programming commands 11

6.2.1 Command Reference user level 11

6.2.2 Command Reference SETUP level 12

6.2.3 Step response/filtering NS-15/DPG2-RUG 13

7Qualification Testing 14

7.1 Standards 14

7.2 Periodical Testing 14

7.3 Material Testing 14

8Additional Information 15

8.1 Ordering Information 15

Instruction Manual

DPG-Series Inclinometer

MEAS Deutschland GmbH www.meas-spec.com phone: +49-(0)231-9740-0

Hauert 13, D-44227 Dortmund, Germany 3 of 15 fax: +49-(0)231-9740-20

July 2015

1 History

Ver. Date Purpose Author

1.0 2013-01-28 Creation M.Zürn

1.1 2015-07-07 Update Chapter 3.1 Point 7 & add. Minor changes

Update of Fig. 5.2, Dimensions & Weight F.Schwieger

2 General Information

The NS-xx/DPG2-RUx is a µC controlled inclinometer for industrial applications. The NS-xx/DPG2

features a measuring range up to ± 30°.

2.1 Features

•two inclination sensor cells based on a conductance measurement principle

•electronic excitation and readout of the cell signal

•digital linearization

•temperature compensation

•outputs RS232 & voltage

2.2 Type and order codes

Required type of product can be ordered by use of one of the following part numbers:

Type Measurement angle Output Supply Order number

NS-5/DPG2-RUD +/- 5° RS232, voltage +7… 30 VDC G-NSDPG2-003

NS-10/DPG2-RUG +/-10° RS232, voltage +7… 30 VDC G-NSDPG2-001

NS-15/DPG2-RUG +/-15° RS232,voltage +7… 30 VDC G-NSDPG2-002

NS-30/DPG2-RUN +/-30° RS232 ,voltage +7 ... 30VDC G-NSDPG2-005

3 General Information

Thank you for purchase of a DPG2-Series inclinometer from Measurement Specialties.

This manual offers information on the proper installation and operation. For further technical

information on the performance of the DPG2-Series inclinometer, please see the Specification,

DPG2-Series inclinometer

Instruction Manual

DPG-Series Inclinometer

MEAS Deutschland GmbH www.meas-spec.com phone: +49-(0)231-9740-0

Hauert 13, D-44227 Dortmund, Germany 4 of 15 fax: +49-(0)231-9740-20

July 2015

3.1 Notice

Please observe all proper safety rules and regulations for electrical devices

when installing this inclinometer. In addition, the following recommendations are

made.

1. Do not apply power to the inclinometer during installation.

2. Avoid applying any mechanical pressure or stress to the housing.

3. Do not operate an inclinometer beyond the maximum angular sensing range

or threshold. Irreparable damage may occur.

4. Do not exceed the maximum fastening torque for the mounting screws,

as the base plate may become warped and/or irreparably damaged.

5. Use detergents free of solvents or acid for cleaning of the housing.

6. Avoid direct solar radiation.

7. Recommended tightening torque of cable gland (3±0.5 Nm) should be

checked once in a year after purchase to secure IP class of sensor module.

8. Should the inclinometer fail to operate properly, consult this manual for

possible solutions. Do not attempt to open the inclinometer, as damage may

occur. For other troubleshooting measures, please contact our service team.

Instruction Manual

DPG-Series Inclinometer

MEAS Deutschland GmbH www.meas-spec.com phone: +49-(0)231-9740-0

Hauert 13, D-44227 Dortmund, Germany 5 of 15 fax: +49-(0)231-9740-20

July 2015

4 General function of the inclinometer system

4.1 Description of the liquid/conductive measurement principle

Platinum electrodes are deposited in pairs on the base of the sensor’s cell parallel to the sensitive

axis. The chamber is partially filled with an electrolytic liquid. When an alternating voltage is passed

between two electrodes, the electric current will create a dispersed field. By tilting the sensor and

thereby reducing the level of liquid, it is possible to confine this stray field. Because of the constant,

specific conductivity of the electrolytes a variance of resistance is formed in relation to the liquid level.

A basic differential principle will yield an angle of inclination from the polarity signs.

Ceramic housing

Ceramic base plate

with electrodes

Instruction Manual

DPG-Series Inclinometer

MEAS Deutschland GmbH www.meas-spec.com phone: +49-(0)231-9740-0

Hauert 13, D-44227 Dortmund, Germany 6 of 15 fax: +49-(0)231-9740-20

July 2015

5 Mechanics and Conditions

5.1 Mounting Instructions

The inclinometer is designed for horizontal mounting, meaning the base plate of the inclinometer with

the three mounting holes needs to be placed on the horizontal plane of the object to be measured.

The mounting surface must be smooth and free of dust and grease. Fasten inclinometer to the surface

to be measured with three M4 screws, and use recommended tightening torque (depends on property

class of chosen screws, e.g. 2.9 Nm if M4 8.8 class screws are used with dry threads).

5.2 Installation

Prior to installation, please check for all connection and mounting instructions to be complied with.

Please also observe the general rules and regulations on low voltage technical devices.

Avoid shock and vibration during measurement, as these could adulterate the measurement results.

Inclination sensors that base on a fluidic measurement principle are optimal for static measurements

and suitable to only a limited extent of dynamic measurement.

5.3 Measurement

Tilt angle measurements are made in the ‘X’ and ‘Y’ axis’ (longitudinal and lateral respectively), with

the reference being the horizontal plane.

5.4 Mounting

For operation this inclinometer has to be mounted horizontally (see Fig. 5.1), reference is the base plate.

Fig. 5.1 Mounting position of sensor module & inclination axis

5.5 Mechanical data

Parameter

Symbol

Conditions

Min

Typ

Max

Unit

Weight 270 g

Dimensions W x D x H

84 x 70 x 34.2

Protection class

IP 67

Instruction Manual

DPG-Series Inclinometer

MEAS Deutschland GmbH www.meas-spec.com phone: +49-(0)231-9740-0

Hauert 13, D-44227 Dortmund, Germany 7 of 15 fax: +49-(0)231-9740-20

July 2015

5.6 Dimensions

The mechanical dimensions of the module are shown in Fig. 5.2

Fig. 5.2 Top and lateral views with dimensions of the inclinometer with metric cable screw

reference edge

(parallel to x-axis)

Instruction Manual

DPG-Series Inclinometer

MEAS Deutschland GmbH www.meas-spec.com phone: +49-(0)231-9740-0

Hauert 13, D-44227 Dortmund, Germany 8 of 15 fax: +49-(0)231-9740-20

July 2015

5.7 Label information

The label placed on top of the module contains the following information:

Type Code : see table in chapter 2.2

HW/SW Code : internal Hardware/Software-Versions

Serial No.: YYWWNNNNN

Serial Number consists of nine digits. YY shows the year of production (2011=11), WW the week of

the production and NNNNN the unique number for identification and traceability.

5.8 Cable and configuration

The inclinometer is delivered with a cable of approximately 1 m length.

Type of cable: LiYCY 6x0.14mm2

Conductor resistance: 131 Ohm/km

Capacity: 90pF/m at 1kHz

Following configuration/cable color scheme is in use:

Cable

color

Name

Description

Type

White

Vcc

Positive power supply

Supply, Input

Yellow

GND

Ground

Supply, Input

Brown

Out X

Voltage output X

Output

Green

Out Y

Voltage output Y

Output

Grey

RxD

RS 232 input

Input

Pink

TxD

RS 232 output

Output

Instruction Manual

DPG-Series Inclinometer

MEAS Deutschland GmbH www.meas-spec.com phone: +49-(0)231-9740-0

Hauert 13, D-44227 Dortmund, Germany 9 of 15 fax: +49-(0)231-9740-20

July 2015

5.9 Connecting to a PC using an RS 232 interface

PC side Cable/wire of NS-xx/DPG2-x

Sub D-connector 9 pins

Pin 2 RxD white +Ub supply positive power supply

(use ext. supply via battery, accu

or power pack)

Pin 3 TXD brown Out output analogue voltage output signal x-

axis

Pin 5 GND green Outy output analogue voltage output signal y-

axis

yellow GND supply negative power supply, ground

(use ext. supply via battery, accu,

or power pack)

grey RxD input Rx, RS232 digital serial signal

pink TXD output Tx, RS232 digital serial signal

Instruction Manual

DPG-Series Inclinometer

MEAS Deutschland GmbH www.meas-spec.com phone: +49-(0)231-9740-0

Hauert 13, D-44227 Dortmund, Germany 10 of 15 fax: +49-(0)231-9740-20

July 2015

6 Interface

6.1 Digital Output RS232

For digital communication, the standardized RS 232-Interface (V24) is used in duplex mode.

After startup the sensor transmits the angle values in degrees (°) continuously.

6.1.1 Electrical Levels

RS232:

PARAMETER

TEST CONDITIONS

MAX

TYP

(†)

MIN

UNIT

High-level output voltage

OUT

at R

= 3 kΩ to GND, D

GND

VOL Low-level output voltage

DOUT at RL= 3 kΩ to GND, DIN = VCC

−5

−9

IIH High-level input current

VI= VCC

200

µA

Low-level input current

at 0 V

−1

−20

µA

IOS(‡) Short-circuit output current

Vcc = 5.5 V, VO= 0 V

±10

−60

ΩOOutput resistance

Vcc, V+, and V− = 0 V, VO= ±2 V

300

Ω

(†) TA = 25°C.

(‡) Short-circuit durations should be controlled to prevent exceeding the device absolute power-dissipation ratings, and no more

than one output

6.1.2 Interface parameter for all NS–xx/DPG2–RUx (except NS–30/DPG2-RUN)

Baud rate: 9600 Baud

Format: ASCII, 8 data bits, 1 stop bit, no parity

String length: 22 byte

Layout: < D0 ... D21>

D0 ... D10 = “X=±xx.xxx“, <CR>, <LF>

with D2 = sign (+ or -)

with D5 = point

D11 ... D21 = “Y=±xx.xxx“, <CR>, <LF>

with D13 = sign (+ or -)

with D16 = point

6.1.3 Interface parameter for NS–30/DPG2–RUN

Baud rate: 9600 Baud

Format: ASCII, 8 data bits, 1 stop bit, no parity

String length: 20 byte

Layout: < D0 ... D19>

D0 ... D9 = “X=±xx.xx“, <CR>, <LF>

with D2 = sign (+ or -)

with D5 = point

D10 ... D19 = “Y=±xx.xx“, <CR>, <LF>

with D12 = sign (+ or -)

with D15 = point

…

X=+00.430

Y=-00.084

…

Example:

…

X=+00.43

Y=-00.08

…

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