Operating Instructions
DIGEM 96 x 48 B5
A1385 Digital, Panel Mount
Measuring Instrument
2786688611
09/03
Contents
Page
1 Applications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2 Mounting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
3 Terminal Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
3.1 External Control Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
4 Basic Instrument Settings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
5 Programming. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
5.1 Display Brightness . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
5.2 Measuring Range Matching for 0 – 20 mA and 4 – 20 mA . . . . . . . 10
5.3 Measuring Range Matching for Pt100 Temperature Sensor . . . . . . . 10
5.4 Measuring Range Matching with HCAL (hardware calibration). . . . . . 10
5.5 Measuring Range Matching with PCAL (software calibration) . . . . . . 11
5.6 Relay Switching Performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
5.7 Limit Value Switching Points. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
5.8 Setting Hysteresis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
5.9 Securing the Selected Limit Values . . . . . . . . . . . . . . . . . . . . . . . . . 12
6 Setting the Limit Values During Operation . . . . . . . . . . . . . . . . . 13
7 Mean Value Generation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
8 Technical Data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Notes and Warnings
This instrument has left the factory in flawless technical safety condition. In
order to maintain this condition, as well as to assure hazard-free operation,
the user must observe all notes and warnings which are contained within the
operating instructions. If, due to damage, it can no longer be assumed that
hazard-free operation is possible, the instrument must be removed from ser-
2 GOSSEN Müller & Weigert
vice. It must be assumed that the instrument can no longer be safely operated if damage is visibly apparent. Before placing the measuring instrument
into service, make sure that it has been properly equipped for the required
measuring task (correct power supply, inputs and outputs). The instrument
version and any possible options are identified on the serial plate. If covers are
opened or parts are removed from the instrument, voltage conducting parts
may be exposed. Balancing, maintenance and repair of live, open instruments
may only be performed by trained personnel who are familiar with the dangers
involved.
1 Applications
The easy to program DIGEM 96 x 48 B5 digital indicator is a high precision
panel mount instrument with adjustable display range. The display range can
even be matched to the 4 to 20 mA and 0 to 20 mA measuring ranges after it
has been installed without the use of a calibrator. The measuring instrument is
thus suited for applications, for which on-site adjustments to the display
range are frequently required.
The instrument can optionally be provided with two limit values. Limit value
violations are signalled optically by means of two LEDs at the right-hand side
of the digital display. Furthermor e, each limit value is assigned to a relay with a
changeover contact.
The measurement input is of modular design. It can be used for the following
measuring tasks depending upon the utilized measuring module:
• Direct current, 0 ... 20 mA and 4 ... 20 mA
• Direct current, 4 ... 20 mA, with power supply for 24 V / 20 mA 2-wire
measuring transducer
•Temperature measurement with Pt 100
• Direct voltage from ± 60 mV to ± 200 V
• Direct current from ± 2 mA to ± 200 mA
• Alternating voltage from 0.2 V to 700 V
• Alternating current from 2 mA to 200 mA
2 Mounting
First set the measuring instrument into the panel cutout from the front without
the fastening tabs. The fastening tabs are then inserted from the rear into the
slots provided for this purpose at the side panels, and are squeezed against
the control panel.
GOSSEN Müller & Weigert 3
Attention
A
!
If several instruments are mounted at maximum component density ,
make sure that the maximum operating temperature of 50˚ C is not
exceeded, even with internal warming.
Dimensional Drawing
A1
19.9 1
A2
96
+0.8
Panel Cutout 92
96
1
90.5
+0.6
x 45
5
37
126
48
48
42.5
ll dimensions in mm
4 GOSSEN Müller & Weigert
119
138
Installation Depth with Relay Outputs
3Terminal Connections
Changeover
Normally Open
Normally Closed
30 29 28 26 25 24
Relay 2
1 2 3 4 5 6 8 9 10 11 13 14 15
+
~
Measurement
Input
1 2 3 4 5 6 1 2 3 4 5 6 1 2 3 4 5 6
Relay 1
–
~
Normally Closed Contact
Normally Open Contact
Changeover Contact
Reset
Hold
Lock
0 V / GND
Upper Range Value
Offset Adjustment
+
–
+
–
~
~
24
V
AC / DC
~
~
230 V AC / 50 Hz
Cable Resistance
Compensation
max. 2 Ω
4-Wire Connection 3-wire 2-wire
GOSSEN Müller & Weigert 5
3.1 External Control Inputs
Attention
!
Terminals 8, 9, 10 and 11 are electrically connected to the measurement input. External switching elements must be electrically isolated
from earth as required by measurement input potential.
Reset and Device Test
The entire display is darkened if
a connection is established
between terminals 8 and 11.
Attention : This connection
causes resetting of the
microprocessor.
A segment test is performed for
approx. 1 second after this connection has been interrupted. The instrument
returns to normal operation after the segment test has been completed.
1234
5
10 11
89
6
Lock
Hold
Reset
14 15
13
Save Display Value to Memory (Hold)
The currently displayed value is saved to memory if a connection is established between terminals 9 and 11 during normal display operation. This has
no effect on the measuring cycle.
Program Protection (Lock)
Selected parameters are protected against possible change if a connection is
established between terminals 10 and 11.
6 GOSSEN Müller & Weigert
4 Basic Instrument Settings
Parameter Function Setting Range
bri Display brightness 0 ... 7
0 – 20 mA
AA Lower display range value
AE Upper display range value
4 – 20 mA
AA Lower display range value
AE Upper display range value
Pt100
C / F Display in degrees Celsius or Fahrenheit C / F
2-4L / 3L 2/4-wire of 3-wire connection 2-4L / 3L
HCA
ZEro Lower display range value –1999 ... 9999
SPAn Upper display range value –1999 ... 9999
PCA
OFSt Offset adjustment –1999 ... 9999
SCAL Measurement value multiplier –1.999 ... 9.999
dP
HiLo
(only for
instruments
with limit values)
Hi-1 Switching point for limit value 1 –1999 ... 9999
Lo-2 Switching point for limit value 2 –1999 ... 9999
HYSt Hysteresis 0 ... 100
ULoc Secure limit values Uloc, Loc
Measuring range selection
Measuring range selection
Measuring range selection
Hardware calibration
Software calibration
Decimal point 0.000 / 00.00 /
Relay switching performance LoLo,
000.0
LoHi,
HiHi,
HiLo
GOSSEN Müller & Weigert 7
5 Programming
The following parameters can be set in the order in which they appear below:
• LED display brightness
• Measuring range selection
• Decimal point
The following additional parameters can also be set for instruments with limit
values:
• Relay switching performance
• Switching point values
• Limit value hysteresis
Enabling Programming
In order to enable programming, program protection (Lock) must be released,
i.e. contact between terminals 10 and 11 must be interrupted. If programming
has not been enabled,
accessed.
Loc
is displayed when the programming mode is
Programming Description
The measuring instruments are programmed at the factory as indicated on
the serial plate. If programming has been enabled, the basic settings can be
changed with the three keys at the front panel.
8 GOSSEN Müller & Weigert
▲
▼
Observe selected measuring module.
P
▲
P
P
/F
/3L
P
P
P
▼
▲
▲
Selection
see chapter 5.6
P
P
P
P
P
▼
Selection
▲
see chapter 5.9
Programming Overview for Basic Instrument Settings
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Press the P and ⇑ keys simultaneously in order to enter the programming
mode. The parameter designation and the corresponding value blink alternately. The longer the arrow key is pressed and held, the faster the value is
changed. The currently displayed value is not saved until the next parameter
is selected by pressing the P key.
Range matching for 0 / 4 – 20 mA and for Pt100 sensors depends upon the measuring
module, and may only be selected if the corresponding measuring module is utilized
(see specifications on the serial plate).
5.1 Display Brightness
Display brightness can be adjusted with the “bri” parameter. Brightness can
be set within a range of 0 to 7. It is set to a default value of 5 at the factory.
5.2 Measuring Range Matching for 0 – 20 mA and 4 – 20 mA
The parameters AA and AE allow for the entry of a display range without any
additional calibration.
5.3 Measuring Range Matching for Pt100 Temperature Sensor
This selection allows for the display of temperatures in either ˚C or ˚F, and
determines whether 2/4-wire or 3-wire connection is used for the temperature
sensor.
5.4 Measuring Range Matching with HCAL (hardware calibration)
This selection allows for adjustment through the use of a calibrator. The input
quantities for the lower and upper measuring range values must be applied to
the measuring instrument’s input during adjustment.
Apply the value which corresponds to the lower measuring range value to the
measurement input. Select the ZErO parameter and enter the value which
corresponds to the lower measuring range value.
Apply the value which corresponds to the upper measuring range value to the
measurement input. Select the SPAn parameter and enter the value which
corresponds to the upper measuring range value.
Save the selected values to memory with the P key. The measuring instrument automatically calculates offset and multiplier, and saves these values to
memory.
Attention: If values which lie outside of the setting range result from the calculation of offset or multiplier, the message ErrP appears and the incorrect entry
blinks (e.g. SPAn).
10 GOSSEN Müller & Weigert
5.5 Measuring Range Matching with PCAL (software calibration)
Adjustment is performed without a calibrator for measuring range matching
with PCAL by calculating the offset magnitude and the multiplication factor.
Offset and multiplier are then set directly in digital format.
Offset Calculation (OFSt)
The offset value is the number of digits by which the display is offset from the
“normal” zero point. The offset value is calculated with the following equation
and does not take any possible decimal point into consideration:
Offset AA
AA = lower display range value SA = lower signal range value (lower input range value)
AE = upper display range value SE = upper signal range value (upper input range value)
SA (AE AA)–×
–=
-------------------------------SE SA–
Multiplier Calculation (SCAL)
The display range is matched to the input signal range with the SCAL multiplier. The calculation is based upon the following equation:
SE
SCAL
Example:
Assuming the measuring instrument is configured as follows:
0 ... 10 V signal range corresponds to a display range of 0.0 ... + 100.0.
Configuration needs to be changed to the following:
2 ... 10 V signal range corresponds to a display range of – 10.0 ... + 100.0.
This results in the following:
OFSt 100–
SCAL
SA = 2 V, AA = – 100;
SE = 10 V, AE = +1000;
(AE-AA)
⋅=
-----------
----------------
2000
(SE-SA)
2 (1000 – (–100))
– 375–==
-------------------------------------10 – 2
10
1000 100–()–
⋅ 0.6875==
-----------
----------------------------------
2000
10 – 2
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5.6 Relay Switching Performance
Display information depends upon selected relay switching performance,
i.e. LoLo, LoHi, HiHi or HiLo.
LoLo = Both relays for limit values 1 and 2 are active,
LoHi = The relay for limit value 1 is active, if the measurement value is less than
HiHi = Both relays for limit values 1 and 2 are active, if the measurement value
HiLo = The relay for limit value 1 is active, if the measurement value exceeds limit
Select the required function with the ⇑ and ⇓ keys. Save values to memory
with the P key.
if the measurement value is less than the selected limit values.
limit value 1. The relay for limit value 2 is active, if the measurement value
exceeds limit value 2.
exceeds the selected limit values.
value 1. The relay for limit value 2 is active, if the measurement value is
less than limit value 2.
5.7 Limit Value Switching Points
Depending upon the selected switching function, either Lo-1 and a numeric
value, or Hi-1 and a numeric value blink alternately at the display.
The numeric value corresponds to limit value 1.
Select the required value with the ⇑ and ⇓ keys. Save values to memory with
the P key. Depending upon the selected switching function, either Lo-2 and a
numeric value, or Hi-2 and a numeric value blink alternately at the display.
The numeric value corresponds to limit value 2. Select the required value with
the ⇑ and ⇓ keys. Save values to memory with the P key.
5.8 Setting Hysteresis
HYST and a numeric value blink alternately at the display.
The numeric value corresponds to the selected hysteresis in ± format.
Select the desired hysteresis with the ⇑ and ⇓ keys. Save values to memory
with the P key.
5.9 Securing the Selected Limit Values
Either Uloc or Loc is displayed.
Uloc = The selected limit values can be changed, even if programming is protected
Loc = The selected limit values are protected against unauthorized or inadvertent
against unauthorized or inadvertent changes by means of an external
connection between terminals 10 and 11.
change by the program protection function.
Then the limit values cannot be changed.
12 GOSSEN Müller & Weigert
Select the required values with the ⇑ and ⇓ keys. Save values to memory with
the P key. The measuring instrument saves all of the settings to memory and
returns to the normal operating mode.
6 Setting the Limit Values During Operation
Limit values can only be adjusted during operation if they have not been
secured during programming. Press the P and ⇓ keys simultaneously in order
to enter the limit value adjustment mode. Depending upon the selected
switching function, either Lo-1 and a numeric value, or Hi-1 and a numeric
value blink alternately at the display. The numeric value corresponds to limit
value 1. Select the required value with the ⇑ and ⇓ keys. Save the value with
the P key and proceed to the next parameter. Depending upon the selected
switching function, either Lo-2 and a numeric value, or Hi-2 and a numeric
value blink alternately at the display. The numeric value corresponds to limit
value 2.
Select the required value with the ⇑ and ⇓ keys. Save value to memory with
the P key. The measuring instrument saves the selected values to memory
and returns to the normal operating mode.
Note: If the instrument has been secured against unauthorized or inadvertent
changes to the limit values, Loc appears at the displays. Adjustment is not
possible in this case.
7 Mean Value Generation
This parameter can only be configured if programming has been enabled. If
programming has not been enabled, Loc appears at the display.
Press the ⇑ and ⇓ keys simultaneously.
FILt and a numeral blink alternately at the display.
The numeral indicates the number of measured values which are used for
mean value generation.
Example: 0 = no mean value generation
Any of the following settings can be used for displayed mean values:
The instrument automatically selects mean value generation based upon 32
measurements for Pt100 sensors.
2 = mean value generation with 2 measured values
No mean value,
Mean value based upon 2, 4, 8, 16 or 32 measurements.
GOSSEN Müller & Weigert 13
8Technical Data
Display
Type 7 segment LED
Display Color red, optionally green
Display Range –1999 to 9999
Character Height approx. 13.2 mm
Polarity “–” is displayed automatically
Decimal Point programmable
Overflow Display
_ _ _ _
Input
Module depends on version: see serial plate
Voltage Module
Input Impedance > 1 MΩ for measurements > 2 V
Current Module
Voltage Drop max. 2 V
Temperature Module, Pt100
Sensor Current 2 mA for Pt100
> 70 kΩ for measurements < 2 V
Error Limits
For Basic Instrument
Without Modules ± (0.1% of rdg. + 1 digit)
DC Module ± (0.1% of rdg. + 2 digits)
Temperature Coefficient < 80 ppm/K
SMRR > 35 dB at 50 Hz
CMRR > 120 dB with ref. to MB 200.00 mV at 50 Hz
AC Module (arithmetic)
Intrinsic Error at 45 ... 65 Hz ± (0.2% of rdg.
30 ... 1 kHz ± (0.3% of rdg. + 5 digits)
Temperature Coefficient ± (0.01% + 0.01 mV) / K
TRUE RMS Module
Intrinsic Error at 45 ... 65 Hz ± (0.2% of rdg. + 3 digits)
20 Hz ... 1 kHz ± (0.3% of rdg. + 5 digits)
Crest Factor 6 (additional 0.5% of rdg.)
Temperature Coefficient ± (0.01% of rdg.
rdg. = measurement value (reading)
+ 3 digits)
+ 0.01 mV) / K
14 GOSSEN Müller & Weigert
Temperature Module, Pt100
Max. Error ± (0.4% of rdg. + 3 digits)
Temperature Coefficient < 150 ppm / K
Offset Drift < 0.1 digit / K
Control Inputs
Device Test (Test) by means of floating contact
Save Display Value (Hold) by means of floating contact
Program Protection (Lock) by means of floating contact
Relays
Contacts 1 changeover contact each
Switching Capacity 5 A / 230 V AC, 5 A / 24 V DC
Switching Time max. 400 ms
Switching Hysteresis adjustable from 0 to ± 100 digits
Supply Power
230 / 115 V AC +15% –10% or
Power Consumption max. 2 VA
18 V ... 36 V DC / 24 V AC ± 15%
Electrical Safety
Versions EN 911010-1.01
Protection Class II
Overvoltage Category II
Fouling Factor 2
Protection EN 60529/ VDE 0470-1
Housing Front Panel IP 54, or IP 65 if an additional seal is installed
Terminals IP 20
EMC
Interference Immunity EN 61000-4Interference Emission EN 61000-3-
between the control panel and the instrument
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Operating Voltage
DC Volt Module 300 V
AC Volt Module, 100/700V 600/700 V (protective impedance)
DC/AC Current Module 300 V
Temperature Modules 50 V
Ambient Conditions
Operating Temperature 0 ... 50˚ C
Storage Temperature – 20 ... 70˚ C
Relative Humidity max. 85%
Utilization Category DIN 40040: KWG
Vibration Resistance EN 61010-1.01
Housing
Material plastic, ABS
Front Panel Dimensions 96 x 48 mm
Panel Cutout
Bezel Height 5 mm
Installation Depth without limit values: max. 126 mm
Weight approx. 0.3 kg
Terminals screw terminal blocks
Mounting plastic mounting tabs
Printed in Germany • Subject to change without notice
GOSSEN Mueller & Weigert
Kleinreuther Weg 88
D–90408 Nuremberg, Germany
Phone: +49 911 3502-0
Fax: +49 911 3502-307/305
e-mail: info@g-mw.de
http://www.g-mw.de
+0.8
+0.6
92
x 45
mm
plus wiring,
with limit values: max. 138 mm
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