Measurement Computing DPG Series User manual

Instruction Manual
DPG-Series Inclinometer
MEAS Deutschland GmbH www.meas-spec.com phone: [phone]
Hauert 13, D-44227 Dortmund, Germany 1 of 15 fax: [phone]
July 2015
Instruction Manual
DPG-Series
Inclinometer
Version 1.1

Instruction Manual
DPG-Series Inclinometer
MEAS Deutschland GmbH www.meas-spec.com phone: [phone]
Hauert 13, D-44227 Dortmund, Germany 2 of 15 fax: [phone]
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: [phone]
Hauert 13, D-44227 Dortmund, Germany 3 of 15 fax: [phone]
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: [phone]
Hauert 13, D-44227 Dortmund, Germany 4 of 15 fax: [phone]
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: [phone]
Hauert 13, D-44227 Dortmund, Germany 5 of 15 fax: [phone]
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: [phone]
Hauert 13, D-44227 Dortmund, Germany 6 of 15 fax: [phone]
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
mm
Protection class
IP 67

Instruction Manual
DPG-Series Inclinometer
MEAS Deutschland GmbH www.meas-spec.com phone: [phone]
Hauert 13, D-44227 Dortmund, Germany 7 of 15 fax: [phone]
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: [phone]
Hauert 13, D-44227 Dortmund, Germany 8 of 15 fax: [phone]
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: [phone]
Hauert 13, D-44227 Dortmund, Germany 9 of 15 fax: [phone]
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: [phone]
Hauert 13, D-44227 Dortmund, Germany 10 of 15 fax: [phone]
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
V
OH
High-level output voltage
D
OUT
at R
L
= 3 kΩ to GND, D
IN
=
GND
9
5
V
VOL Low-level output voltage
DOUT at RL= 3 kΩ to GND, DIN = VCC
−5
−9
V
IIH High-level input current
VI= VCC
200
15
µA
I
IL
Low-level input current
V
I
at 0 V
−1
5
−20
0
µA
IOS(‡) Short-circuit output current
Vcc = 5.5 V, VO= 0 V
60
±10
−60
mA
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:
Example:
…
X=+00.43
Y=-00.08
…

Instruction Manual
DPG-Series Inclinometer
MEAS Deutschland GmbH www.meas-spec.com phone: [phone]
Hauert 13, D-44227 Dortmund, Germany 11 of 15 fax: [phone]
July 2015
6.2 Programming commands
6.2.1 Command Reference user level
Default after power on or software reset.
Commands in
user level Input Output Comment
Stop continuous
output of
inclination values
“s” “s” Stops the continuous output of angle
results or raw values, required for
input of commands, terminated by “S”
or Reset or Power On,
mode temporary
Start continuous
output of values “S” “X=+01.234”, CR, LF, “Y=-00.007”, CR, LF,
“X=……”
Starts the continuous output of angle
results or raw values,
mode temporary
Version and serial
number “V” “DPL2 V1.8.0”, CR, LF, “SN:123456789”, CR, LF, Output of SW-Version and serial number, use in stopped mode only
Read one value “R” “X=+01.234”, CR, LF,
“Y=-00.007”, CR, LF, Output of 1 complete string, 1 x-value and 1 y-value, only in stopped mode
Activate setup
level “f”
“i”
“m”
“a”
“f”
“i”
“m”
“a”
Activate the setup level, chapter
6.2.2. Setup level can be deactivated
by sending “K” or resetting with “q”.
The controller automatically exits this
level after about 10 minutes of user
inactivity with a reset.
any other no reaction No reaction for commands from setup
level

Instruction Manual
DPG-Series Inclinometer
MEAS Deutschland GmbH www.meas-spec.com phone: [phone]
Hauert 13, D-44227 Dortmund, Germany 12 of 15 fax: [phone]
July 2015
6.2.2 Command Reference SETUP level
Setup level will be used for permanent settings, stored.
Commands in
setup level Input Output Comment
This level will be terminated (reset)
automatically after about 10 minutes of
user inactivity.
Stop continuous
output of inclination
values
“c” “c” Stops the continuous output of angle
results or raw values, required for input
of commands, terminated by “C”,
mode permanent,
query with “ R”, see chapter 6.2.1.
Start continuous
output of values “C” Start the continuous output of angle results or raw values,
mode permanent, valid after reset.
Set zero “N” “N” Define 0° position. Offset is stored and
used even after reset.
Setback zero “n” “n” Resets the offset displacement
Set lowpass filter “M”,
f “M”,
f Input filter settings with count
f = “0”…”7”, other characters were
answered with “E”, see item 1) below.
Set output rate “O”,
o “O”,
o Set output rate with count o = “1”...”6”,
other characters were answered with
“E”, see item 2) below.
Show internal
settings “*” “O123 M123”, CR, LF “OffX=+00.000
OffY=+00.000”, CR, LF
“Erase Cycl SegF:
+00255”, CR, LF
“O123”: internal setting of output rate in
10ms, “M123”: internal filter setting;
both values 255 => default settings
“Off..”: stored Offset values
“Erase Cycl Seg…”: active Segment
and number of erasure procedures for
this segment
Show currently
temperature [°C] “T“ “T= 00.00”, CR,LF
Readout the currently temperature in
°C. Usable at > software version 2.0.2.
Without sign, positive temperature.
With sign `- `, negative temperature.
Software reset “q” “q” Reset the sensor
Erase both Info
segments,
(switch to default
settings)
“E" “Seg A deleted” , CR, LF
“Seg B deleted” , CR, LF Erases the info segments of flash storage banks, InfoA and InfoB. This
set all changed user values to default
settings
Forbidden command “#” “#” Reserved for factory communication

Instruction Manual
DPG-Series Inclinometer
MEAS Deutschland GmbH www.meas-spec.com phone: [phone]
Hauert 13, D-44227 Dortmund, Germany 13 of 15 fax: [phone]
July 2015
1) Set low pass filter exponential, with count f=
“0”: Out value = current value
“1”: Out value = (current value + old out value) /2
“2”: Out value = (current value + 3 * old out value) /4
“3”: Out value = (current value + 7 * old out value) /8
“4”: Out value = (current value + 15 * old out value) /16
“5”: Out value = (current value + 31 * old out value) /32, default
“6”: Out value = (current value + 63 * old out value) /64
“7”: Out value = (current value + 127 * old out value) /128
“8”..9: reserved, undefined.
Above calculation was made every 10ms.
For example of time response see chapter 7.2.3: “Step response NS-15/DPG2-RUG”
2) Set output rate (strings per second, 1 string contains x and y-value) with count o =
“1”: 40ms (==25Hz)
“2”: 100ms (==10Hz), default
“3”: 250ms (==4Hz),
“4”: 500ms (==2Hz)
“5”: 1000ms (==1Hz) “6”: 2000ms (==0,5Hz)
“0”, “7”, “8”, “9”: not defined
6.2.3 Step response/filtering NS-15/DPG2-RUG
Step response NS-15/DPG-RUG, fast change from angle 5° to angle 0°, at Ta=25°C
Measured at output rate 25Hz.
Step response NS-15/DPL2 UXG, 5°->0° at T=25°C
-2°
-1°
0°
1°
2°
3°
4°
5°
6°
0 s 1 s 2 s 3 s 4 s 5 s 6 s
t
φ
filter=1
filter=4
filter=5
filter=6
filter=7
For filter settings see command “M” f in chapter 6.2.2
Step response time NS
-15/DPG2-RUG, 5°->0° at T=25°C

Instruction Manual
DPG-Series Inclinometer
MEAS Deutschland GmbH www.meas-spec.com phone: [phone]
Hauert 13, D-44227 Dortmund, Germany 14 of 15 fax: [phone]
July 2015
7 Qualification Testing
7.1 Standards
The sensor NS-xx/DPG2-xxx complies with:
•IEC/EN 60068-2-2 High Temperature Storage
Ta= 85°C, medium : air, 1000h
•IEC/EN 60068-2-78 High Humidity
Ta= 85°C , RH= 85%, 1000h
•IEC/EN 60068-2-27 Mechanical shock test
A=30g, t=11ms, halfsine, 50 cycles per axis
•IEC/EN 60068-2-6 Vibration loading
10 to 150 Hz, 2.5mm amplitude, 5g const. acceleration,
1 octave/minute, 20 cycles per axis
•IEC/EN 60068-2-14 Thermo shock
THigh=85°C ,TLow=-40°C,medium:air-air,Tdwell: 15min,
Tchange: 30sec,100 cycles
•IEC/EN 61000-6-2 Interference resistance industry
•IEC/EN 61000-6-4 Emitted interference industry
7.2 Periodical Testing
The periodical testing is done every 3 years in terms of a product audit.
7.3 Material Testing
All materials used in the process will be released by checking the corresponding supplier certificates
when available. A regular material analysis from an independent laboratory will not be scheduled.

Instruction Manual
DPG-Series Inclinometer
MEAS Deutschland GmbH www.meas-spec.com phone: [phone]
Hauert 13, D-44227 Dortmund, Germany 15 of 15 fax: [phone]
July 2015
8 Additional Information
8.1 Ordering Information
NORTH AMERICA
EUROPE
ASIA
Measurement Specialties, Inc.
1000 Lucas Way
Hampton, VA 23666
United States
Phone: [phone]
Fax: [phone]
Email: [e-mail]
Web: www.meas-spec.com
MEAS Deutschland GmbH
Hauert 13
D-44227 Dortmund
Germany
Phone: [phone]
Fax: [phone]
Email: info.de@meas-
spec.com
Web: www.meas-spec.com
Measurement Specialties China Ltd.
No. 26, Langshan Road
High-tech Park (North)
Nanshan District, Shenzhen 518057
China
Phone: [phone]
Fax: [phone]
Email: [e-mail]
Web: www.meas-spec.com
The information in this sheet has been carefully reviewed and is believed to be accurate; however, no responsibility is assumed for
inaccuracies. Furthermore, this information does not convey to the purchaser of such devices any license under the patent rights to
the manufacturer. Measurement Specialties, Inc. reserves the right to make changes without further notice to any product herein.
Measurement Specialties, Inc. makes no warranty, representation or guarantee regarding the suitability of its product for any
particular purpose, nor does Measurement Specialties, Inc. assume any liability arising out of the application or use of any product
or circuit and specifically disclaims any and all liability, including without limitation consequential or incidental damages. Typical
parameters can and do vary in different applications. All operating parameters must be validated for each customer application by
customer’s technical experts. Measurement Specialties, Inc. does not convey any license under its patent rights nor the rights of
others.