Omega DP20 User manual

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User’s Guide
DP20
Economical Multisignal Meter
for Process, Temperatures and Electrical signals
TM

2
www.omega.com [email protected]
The information contained in this document is believed to be correct, but OMEGA accepts no liability for any errors it contains, and
reserves the right to alter specifications without notice.
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Tel: [phone] Fax: [phone]
e-mail: [email protected]
For Other Locations Visit omega.com/worldwide

3
OMEGA’s policy is to make running changes, not model changes, whenever an improvement is possible. This affords
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WARRANTY/DISCLAIMER
OMEGA ENGINEERING, INC. warrants this unit to be free of defects in materials and workmanship
for a period of 25 months from date of purchase. OMEGA’s WARRANTY adds an additional one (1)
month grace period to the normal two (2) year product warranty to cover handling and shipping
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arising out of the use of the Product(s) in such a manner.

4
DP20 Economical Multisignal Meter Instruction Manual
1. Economical mulsignal meter DP20
⅛ DIN Economical Mulsignal panel meter for Process, Temperature and Electrical measurements
Economical mulsignal digital panel meter in ⅛ DIN size for panel
mount, and a wide range of applicaons. Accepts AC and DC voltage
signals from mV up to 600 V and currents up to 5 A (AC measures
in True RMS), process signals (mA and Vdc) with excitaon voltage
included, thermocouples K, J, E, N, L, R, S, B, T and C, resisve
temperature probes (Pt100, Pt500, Pt1000, Ni100, Ni200, Ni1000,
PTC and NTC), resistances, potenometers and frequency. Scalable
reading with 4 digits up to 9999 / -1999 with congurable decimal
point. Two independent alarms, congurable as maximum or
minimum, with hysteresis and setpoint.
Oponal 1 or 2 relay outputs, 4/20 mA isolated analog output, and
Modbus RTU isolated serial communicaons.
Front protecon IP65. Connecons with plug-in screw terminals.
Index
1. Panel meter DP20 . . . . . . . . . . . . . . . . . . . . . . . . . .4
1.1 How to order . . . . . . . . . . . . . . . . . . . . . . . . . . .4
1.2 Front view . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.3 Rear view . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
1.4 Power connecons . . . . . . . . . . . . . . . . . . . . . . . . 5
1.5 Signal connecons . . . . . . . . . . . . . . . . . . . . . . . . 5
1.6 Mechanical dimensions (mm) . . . . . . . . . . . . . . . . . . 5
1.7 Measuring Installaon and start-up. . . . . . . . . . . . . . . 5
1.8 Technical specicaons . . . . . . . . . . . . . . . . . . . . .6
1.9 Internal jumpers . . . . . . . . . . . . . . . . . . . . . . . . .7
1.10 Measuring AC voltages and AC currents. . . . . . . . . . . . 8
1.11 Measuring DC voltages and DC currents . . . . . . . . . . .9
1.12 Measuring thermocouples . . . . . . . . . . . . . . . . . . 10
1.13 Measuring with Pt and Ni probes . . . . . . . . . . . . . . 11
1.14 Measuring with NTC probes . . . . . . . . . . . . . . . . . 12
1.15 Measuring with PTC probes . . . . . . . . . . . . . . . . . 12
1.16 Process measures . . . . . . . . . . . . . . . . . . . . . . . 13
1.17 Measuring frequency . . . . . . . . . . . . . . . . . . . . . 13
1.18 Measures of resistance . . . . . . . . . . . . . . . . . . . . 14
1.19 Measures of potenometers . . . . . . . . . . . . . . . . . 14
1.20 ‘Fast access’ menu . . . . . . . . . . . . . . . . . . . . . . 15
1.21 Scaling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
1.22 Oset reading . . . . . . . . . . . . . . . . . . . . . . . . . 15
1.23 ‘Eco’ mode . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
1.24 External control . . . . . . . . . . . . . . . . . . . . . . . . 15
1.25 Second scaling . . . . . . . . . . . . . . . . . . . . . . . . . 15
1.26 To open the instrument. . . . . . . . . . . . . . . . . . . . 16
1.27 How to operate the menus. . . . . . . . . . . . . . . . . . 17
1.28 Messages and errors . . . . . . . . . . . . . . . . . . . . . 17
1.29 Conguraon menu. . . . . . . . . . . . . . . . . . . . . . 18
1.29.1 Input signal ranges . . . . . . . . . . . . . . . . . . . . 18
1.29.2 Scaling . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
1.29.3 Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
1.29.4 Fast access . . . . . . . . . . . . . . . . . . . . . . . . . 20
1.29.5 Super fast access . . . . . . . . . . . . . . . . . . . . . 20
1.29.6 External control . . . . . . . . . . . . . . . . . . . . . . 20
1.29.7 Menu ‘Tools’ . . . . . . . . . . . . . . . . . . . . . . . . 21
1.29.8 Conguring the opons . . . . . . . . . . . . . . . . . . 23
1.30 Full conguraon menu . . . . . . . . . . . . . . . . . . . 24
1.31 Precauons on installaon . . . . . . . . . . . . . . . . . . 27
1.32 Factory conguraon . . . . . . . . . . . . . . . . . . . . . 27
2. Output and control modules . . . . . . . . . . . . . . . . . . . 28
2.1 Modules A1 and A2 (relay out put). . . . . . . . . . . . . . . . . . . 28
2.2 Module M1 (analog output) . . . . . . . . . . . . . . . . . . 28
2.3 Module S1 (Modbus RTU) . . . . . . . . . . . . . . . . . . . 29
Instrument designed for industrial use, highly exible, allows for
integraon in mulple applicaons, reduced cost, excellent quality
and oponal customizaon available.
• ‘Fast access’ menu at front key UP (5) congurable for fast access
to alarm setpoints (see secon 1.19).
• ‘Eco’ mode reduces power consumpon
(see secon 1.22).
• Simplied scaling conguraon (see secon 1.20).
• Funcon ‘external control’ to acvate with a contact a predened
funcon (second scaling, decimal point, reading “hold”, “tare,“
memory of maximum or minimum) (see secon 1.23).
• 5 congurable brightness levels (see secon 1.28.7).
1.1 How to order
DP20
Model
-
Opon 1
-A1 (1 relay)
-M1(analog output)
-S1 (Modbus RTU)
-(empty)
-
Opon 2
-A2 (1 relay)
-(empty)

5
DP20 Economical Multisignal meter Instruction Manual
1.2 Front view
1.4 Power connecons
1.5 Signal connecons
Key ‘UP’
Logo Units
Key ‘SQ’
Key ‘LE’
‘Conguraon menu’
(see secon 1.28)
‘Fast access‘
(see secon 1.28.4)
1.3 Rear view
Signal
(see secon 1.5)
Power
(see secon 1.4)
Alarm 1
Alarm 2
Earth connecon - The
instrument does not need earth
connecon for correct operaon
nor for compliance with security
regulaons. Terminal 9 is not
connected to any internal circuit
and is provided only as a safe
place for earth wire.
Fuse - As requested by security regulaon 61010-1, add a protecon
fuse to the power to act as disconnecon element, easily accessible
to the operator and idened as a protecon device.
250 mA me-lag for power voltage > 50 Vac/dc
400 mA me-lag for power voltage < 50 Vac/dc
~
8 9 0
-
+
~
Power 18 to 265 Vac/dc
Signals up to 600 V and 200 V (AC and DC) must be connected at
terminals 1 and 4. Signals for 5 A current (AC and DC) must be
connected at terminals 3 and 4. All other signals must be connected
between terminals 2 and 4. Terminal 5 is a ‘mulfuncon’ terminal,
congurable with one of the following funcons :
• +15 Vdc excitaon voltage (Vexc) for process signals
• +5 Vdc excitaon for potenometer signals
• connecon for the Pt100 third wire compensaon
• external contact ‘EK’ funcon
To select the terminal 5 funcon, select the posion of internal
jumper ‘T’
(see secon 1.9) .
1.6 Mechanical dimensions in mm (in)
HV signal
5 A {
{~Vac, ±Vdc, resistance, mA, pot,
thermocouple+, Pt+, Ni+, PTC+, NTC+
{
Signal
~600 Vac, ~200 Vac
±600 Vdc, ±200 Vdc
~5 Aac, ±5 Adc
Common {neutral, 0 V, common
12345
mulfunc.
{Vexc, Pt100 3 wire, Pot+,
‘EK’ external control
1. Open the instrument as indicated at secon 1.25 and access
the internal board.
2. Select jumpers ‘S’ for the signal range required (see secon
1.9).
3. Select jumper ‘T’ to assign to mulfuncon terminal 5 the
required funconality (see secon 1.9).
4. Close the instrument ad indicated at secon 1.25.
5. Connect the input signal and the power supply as indicated at
secons 1.4 and 1.5.
6. Enter the ‘conguraon menu’ to congure the instrument
(scaling, alarms, ...) (see secon 1.28).
1.7 Installaon and start-up
Units
Panel
cut-out
96
48
16 8
75
Units
(1.89)
(3.78) (0.63) (0.31)(2.95)
44
92
(1.74)
(3.63)
Opon 2 Opon 1
12345 890
Detail of the plug-in screw terminals provided with
the instrument. The instrument is provided with all
terminals needed, both male and female.

6
DP20 Economical Multisignal Meter Instruction Manual
Digits
number of digits 4
led 7 segments led
color red
height 14 mm
Reading
max. reading 9999
min. reading -1999
decimal point congurable X.X.X.X
readings 3 readings / second
display refresh 3 refresh / second
step response 300 mSec. (0 % to 99 % signal)
overrange reading ashes at ‘9999’
underrange reading ashes at ‘-1999’
Accepted input signal
AC voltages and currents 600 Vac, 200 Vac, 20 Vac, 2 Vac
200 mVac, 60 mVac, 5 Aac, 20 mAac
(see secon 1.10)
DC voltages and currents ±600 Vdc, ±200 Vdc, ±20 Vdc, ±2 Vdc
±200 mVdc, ±60 mVdc, ±5 Adc,
±20 mAdc
(see secon 1.11)
thermocouples K, J, E, N, L, R, S, B, T y C
(see secon 1.12)
temperature ‘Pt’ Pt100 (2 and 3 wires with automac
compensaon up to 30 R), Pt500, Pt1000
(see secon 1.13)
temperature ‘Ni’ Ni100, Ni200, Ni1000
(see secon 1.13)
temperature ‘NTC’ (see secon 1.14)
temperature ‘PTC’ (see secon 1.15)
process 4/20 mA, 0/10 Vdc (acve and passive)
(see secon 1.16)
Measuring Frequency frequency up to 100 Hz
(see secon 1.17)
resistances ranges of 5 K and 50 K
(see secon 1.18)
potenometers nominal value 500 Ohm up to 20 KOhm
(see secon 1.19)
Accuracy at 25 ºC see following secons for each signal
Thermal dri 150 ppm/º
Excitaon voltage +15 Vdc (max. 30 mA) for process signals
+5 Vdc for potenometers
(at terminal 5, see secons 1.5 and 1.16)
Power supply
power ‘U’ 18 to 265 Vac/dc
isolaon 1500 Ve.
isolaon tested for 60 sec.
consumpon
(without ‘Eco’) <1.5 W meter only
<2.5 W meter with opons
consumpon (with ‘Eco’) <0.3 W meter only
<1.5 W meter with opons
Conguraon 3 front push buons
Front protecon IP65, NEMA13
Output opons relay, analog, serial
(see secon 2)
Mechanical
mounng panel
connecons plug-in screw terminals
housing material ABS, polycarbonate (V0)
weight <150 grams
front size 96 x 48 mm (1/8 DIN)
panel cut-out 92 x 44 mm
deep 91 mm (including terminals)
Temperature
operaon from 0 to +50 ºC (32 to 122 ºF)
storage from -20 to +70 ºC (-4 to 150 ºF)
‘warm-up’ me 15 minutes
1.8 Technical specicaons
Funcons included Secon
Fast access to alarm setpoints,
maximum and minimum
1.19
External control second scaling
decimal point 0, 1, 2 or
3 ‘hold’ reading 'tare'
funcon” memory of
maximal memory of
minimum
1.23
‘Eco’ mode reduced consumpon 1.22
Alarms setpoint
hysteresis
set as max or min type
1.28.3
Oset reading add a xed number of
counts to reading
1.21
Display lter recursive
‘steps’
1.28.7
Simplied scaling 1.20
Memory max and min memory 1.28.4
Password blocks conguraon 1.28.7
Display brightness 5 levels 1.28.7
Table 1 - Funcons included

7
DP20 Economical Multisignal meter Instruction Manual
5
6
Input signal terminals
Jumpers ‘S’ for signal
range selecon
Displays
F
E
G
H
I
J
D
B
C
A
K
1.9 Internal jumpers
Internal jumpers ‘S’ are associated to the signal range. The posion of
internal jumper ‘T’ assigns the funcon of the mulfuncon terminal
5. At ‘Table 2’ see a list of signal ranges and associated jumper ‘S’
and ‘T’. At Table 3 see the posion for jumper ‘T’ associated to each
funcon of the mulfuncon terminal 5. To access the internal
jumpers, open the housing as explained at secon 1.25. For addional
informaon on each signal range see the following secons :
• Ranges for AC voltages and currents, see secon 1.10
• Ranges for DC voltages and currents, see secon 1.11
• Ranges for thermocouples, see secon 1.12
• Ranges for Pt and Ni probes, see secon 1.13
• Ranges for NTC probes, see secon 1.14
• Ranges for PTC probes, see secon 1.15
• Ranges for process signals, see secon 1.16
• Ranges for frequency signals, see secon 1.17
• Ranges for resistance measures, see secon 1.18
• Ranges for potenometer measures, see secon 1.19
Range Jumpers
‘S’
Jumper
‘T’
AC voltages and currents
~ 600 Vac G I
4-5
~ 200 Vac I
~ 20 Vac A I
~ 2 Vac B I
~ 200 mVac C I
~ 60 mVac E I
~ 5 Aac I
~ 20 mAac D I
DC voltages and currents
±600 Vdc G
4-5
±200 Vdc - - -
±20 Vdc A
±2 Vdc B
±200 mVdc C
±60 mVdc E
±5 Adc - - -
±20 mAdc D
Process
4/20 mA D
1-2*
0/10 Vdc A
* jumper 1-2 to acvate Vexc.
Select 4-5 to acvate funcon ‘EK’
Resistances
0 to 5 K F H K
4-5
0 to 50 K F K
Table 2 - Jumpers ‘S’ and ‘T’ and signal
ranges
Range Jumpers
‘S’
Jumper
‘T’
Thermocouples
Tc. K
E
4-5
Tc. J
Tc. E
Tc. N
Tc. L
Tc. R
E J Tc. S
Tc. T
Tc. C
E
Tc. B E J
Pt and Ni probes
Pt100
(3 wire) F H J 5-6
Pt100
(2 wire) F H
4-5
Pt500 F
Pt1000 F
Ni100 F H
Ni200 F H
Ni1000 F
NTC probes
NTC F K 4-5
PTC probes
KTY 121 F
4-5
KTY 210, 220 F H K
Potenometers
0/100 % A 2-3
Table 2 - Jumpers ‘S’ and ‘T’ and signal
ranges
Jumpers stored at
‘no contact’ posion
F
E
G
H
I
J
D
B
C
A
K
Jumpers not used can be stored for
future use by placing them at the ‘no
contact’ posions indicated below.
Only the 3 posions indicated are
safe to store jumpers.
Jumpers ‘T’ Acve funcon at terminal 5
1 2 Vexc (excitaon voltage +15 Vdc) for process
2 3 Potenometer excitaon (+5 Vdc)
4 5 External control (‘EK’ funcon)
5 6 Pt100 third wire
Table 3 - Jumpers ‘T’ and funcon at mulfuncon terminal 5
2
1
3
5
4
6
Jumpers ‘T’ for terminal 5
funcon selecon

8
DP20 Economical Multisignal Meter Instruction Manual
1.10 Measuring AC voltages and AC currents
• AC signal ranges
The instrument accepts the measure of AC voltages
and currents, with ranges from 60 mVac up to 600 Vac,
covering from shunt signals to typical power line
voltages of 48 Vac, 115 Vac, 230 Vac and even 380 Vac.
Both phase - to - neutral and phase - to - phase measures are
accepted. AC currents signals of up to 5 Aac are accepted, and it has
a range of 20 mAac.
•‘True RMS’ measure
AC measure are TrueRMS. The instrument assigns a ‘dead band’
around 0, with a congurable value between 0 and 100. Value
is empirical, and by default is set to 20. The ‘dead band’ can be
congured at the ‘Conguraon menu’ (see secon 1.28.7).
•Scaling
The instrument allows to scale the reading to 4 digits (9999 / -1999)
with congurable decimal point to any posion. The ‘second scaling’
funcon can also be used (see secon 1.24).
•Maximum oversignal
‘Maximum oversignal’ is the maximum signal accepted by the in-
strument. Higher signal values may cause instrument damage. Low-
er values are non destrucve but may be out of accuracy specica-
ons.
•Response mes
The response me to a signal step is 300 mSeconds, independent of
the signal range selected.
•Terminal 5 ‘mulfuncon’ - External control
Terminal 5 remains congured as ‘EK’ external control funcon. See
secon 1.9 for a list of available funcons.
•Start-up, connecons and jumpers
For instrument start-up follow the steps listed at secon 1.7. Signal
connecons are indicated at secon 1.5. Locaon for internal
jumpers is indicated at secon 1.9.
Vac ranges
(Ve.)
Scale
by default
Scalable Jumper ‘S’
(see secon 1.9)
Jumper ‘T’
(see secon 1.9)
Accuracy
(% FS)
Max.
oversignal
Connecon
( terminals)
Zin
~ 600 Vac 600
from 9999
to -1999
G I
4-5 <0.30 %
(up to 150 Hz)
800 Vac
1(~ ) 4(~ )
12 M
~ 200 Vac 200.0 I800 Vac 12 M
~ 20 Vac 20.00 A I 150 Vac
2(~ ) 4(~ )
1 M
~ 2 Vac 2.000 B I 100 Vac 100 K
~ 200 mVac 200.0 C I 30 Vac 10 K
~ 60 mVac 60.0 E I 3 Vac 1 M
Table 4 - Measuring ranges in Vac
Aac ranges
(Ve.)
Scale
by default
Scalable Jumper ‘S’
(see secon 1.9)
Jumper ‘T’
(see secon 1.9)
Accuracy
(% FS)
Max.
oversignal
Connecon
( terminals)
Zin
~ 5 Aac 5.00 from 9999
to -1999
I
4-5 <0.50% (up to 150 Hz)
7 Aac
(max. 7 sec.) 3(~ ) 4(~ )20 mOhm
~ 20 mAac 20.00 D I 25 mAac 2(~ ) 4(~ ) 4.7 R
Table 5 - Measuring ranges in Aac
Applicaons
... with shunts ...
measure of AC currents through a
current shunt of 60 mV, 100 mV or
150 mV and scaled reading
... with X/5, X/1 current
transformers ...
measure of AC currents through a X/5
or X/1 current transformer and scaled
reading
... direct measure ... direct measure of currents up to 5 Aac
... with power line voltages ...
measure of voltages over power
lines phase and neutral, of 230 Vac,
115 Vac, ...
... with power voltages ... measure of phase to phase lines on
power lines 380 Vac, 230 Vac, ...
... with AC voltages measure of AC voltages in panels using
24 Vac, 48 Vac, ...
Table 6 - Applicaons with measure of AC signals
See below a list of typical connecons :
~5 Aac
~5 Aac
12345
~600 Vac
~600 Vac
12345
~60 mVac
~60 mVac
12345
•5 Aac•600 Vac
•200 Vac
•20 Vac to 60 mVac
•20 mAac

9
DP20 Economical Multisignal meter Instruction Manual
1.11 Measuring DC voltages and DC currents
• Measuring DC signal ranges
The instrument accepts the measure of DC voltages
and currents, with ranges from 60 mVdc up to 600 Vdc,
covering applicaons with current shunts, tachometric
dynamos, baeries, process, etc. DC currents signals of
up to 5 Adc are accepted, and it has a range of 20 mAdc.
•Bipolar ranges
All signal ranges are bipolar, and the instrument can measure both
the posive and the negave signal.
•Scaling
The instrument allows to scale the reading to 4 digits (9999 / -1999)
with congurable decimal point to any posion. The ‘second scaling’
funcon can also be used (see secon 1.24).
•Maximum oversignal
‘Maximum oversignal’ is the maximum signal accepted by the in-
strument. Higher signal values may cause instrument damage. Low-
er values are non destrucve but may be out of accuracy specica-
ons.
•Response mes
The response me to a signal step is 300 mSeconds, independent of
the signal range selected.
•Terminal 5 ‘mulfuncon’ - External control
Terminal 5 remains congured as ‘EK’ external control funcon. See
secon 1.9 for a list of available funcons.
•Start-up, connecons and jumpers
For instrument start-up follow the steps listed at secon 1.7. Signal
connecons are indicated at secon 1.5. Locaon for internal
jumpers is indicated at secon 1.9.
Vdc ranges Scale
by default
Scalable Jumper ‘S’
(see secon 1.9)
Jumper ‘T’
(see secon 1.9)
Accuracy
(% FS)
Max.
oversignal
Connecon
( terminals)
Zin
±600 Vdc 600
from 9999
to -1999
G
4-5
<0.20 %
800 Vdc
1(+) 4(-)
12 M
±200 Vdc 200.0 - - - 800 Vdc 12 M
±20 Vdc 20.00 A 150 Vdc
2(+) 4(-)
1 M
±2 Vdc 2.000 B100 Vdc 100 K
±200 mVdc 200.0 C 30 Vdc 10 K
±60 mVdc 60.0 E<0.25 % 3 Vdc 1 M
Table 7 - Measuring ranges in Vdc
Adc ranges Scale
by default
Scalable Jumper ‘S’
(see secon 1.9)
Jumper ‘T’
(see secon 1.9)
Accuracy
(% FS)
Max.
oversignal
Connecon
( terminals)
Zin
±5 Adc ±5.00 from 9999
to -1999
- - -
4-5
<0.25 % 7 Aac
(max. 7 sec.) 3(+) 4(-) 20 mOhm
±20 mAdc ±20.00 D<0.15 % 25 mAdc 2(+) 4(-) 4.7 R
Table 8 - Measuring ranges in Adc
Applicaons
... with shunts ...
measure of DC currents through a
current shunt of 60 mV, 100 mV or
150 mV and scaled reading
... direct measure ... direct measure of currents up to 5 Adc
and voltages up to 400 Vdc
... with baeries ... measure of the baery voltage at
12 Vdc and 24 Vdc
... with tachometric
dynamos ...
read the speed in RPM from a
tachometric dynamo voltage signal
... with speed variators ...
measure the voltage signal from the
variator, proporonal to the RPM speed
of the motor
Table 9 - Applicaons with DC signals
See below a list of typical connecons :
±5 Adc
common
12345
±600 Vdc
common
12345
±60 mVdc
common
12345
•±5 Adc•±600 Vdc
•±200 Vdc
•±20 Vdc to ±60 mVdc
•±20 mAdc

10
DP20 Economical Multisignal Meter Instruction Manual
1.12 Measuring thermocouples
•Thermocouples accepted
The instrument accepts direct connecon of
thermocouples type K, J, E, N, L, R, S, B, T and C.
•Temperature ranges and total error
Temperature ranges and total error for each type of thermocouple
are indicated on ‘Table 10’ below.
•Cold juncon compensaon
The thermocouple cold juncon is automacally compensated by
the instrument. The automac compensaon can be disabled from
the conguraon menu.
•Resoluon and units
The instrument resoluon when measuring thermocouples is 1º.
Reading can be congured in ºC (degrees Celsius) or ºF (degrees
Fahrenheit).
•Sensor break detecon
In case of sensor break, the instrument will show ‘h.ovr’ or ‘h.udr’
(see Table 18) depending on the broken cable.
Thermocouple Jumper ‘S’
(see secon 1.9)
Jumper ‘T’
(see secon 1.9)
Range in ºC
(in ºF)
Connecon
( terminals)
Total error
(cold juncon included)
Thermocouple K
E
4-5
-100 / 1350 ºC
(-148 / 2462 ºF)
2 (tc +)
4 (tc -)
<3 º
Thermocouple J -100 / 1200 ºC
(-148 / 2192 ºF)
Thermocouple E -100 / 1000 ºC
(-148 / 1832 ºF)
Thermocouple N
-100 / 1300 ºC
(-148 / 2372 ºF)
Thermocouple L -100 / 900 ºC
(-148 / 1652 ºF)
Thermocouple R
E J
0 / 1768 ºC
(32 / 3214 ºF)
Thermocouple S 0 / 1768 ºC
(32 / 3214 ºF)
Thermocouple T -100 / 400 ºC
(-148 / 752 ºF)
Thermocouple C E0 / 2300 ºC
(32 / 4172 ºF)
<5 º
Thermocouple B E J 700 / 1820 ºC
(1292 / 3308 ºF)
Table 10 - Temperature ranges for thermocouples
tc +
tc -
12345
•Compensated cable
To correctly measure a thermocouple signal, always use compensated
cable, of the thermocouple used, to connect the instrument and the
thermocouple.
•Response mes
The response me to a signal step is 300 mSeconds, independent of
the signal range selected.
•Terminal 5 ‘mulfuncon’ - External control
Terminal 5 remains congured as ‘EK’ external control funcon. See
secon 1.9 for a list of available funcons.
•Start-up, connecons and jumpers
For instrument start-up follow the steps listed at secon 1.7. Signal
connecons are indicated at secon 1.5. Locaon for internal
jumpers is indicated at secon 1.9.
See below connecons for thermocouple :

11
DP20 Economical Multisignal meter Instruction Manual
1.13 Measuring with Pt and Ni probes
•Accepted Pt and Ni probes
The instrument accepts connecon of Pt100, Pt500 and
Pt1000 temperature probes, and also Ni100, Ni200 and
Ni1000 temperature probes. Temperature ranges for
each type of probe are indicated on ‘Table 11’ below.
•Pt100 with 2 and 3 wires
The instrument accepts connecon for 2 and 3 wire Pt100 probes.
For 3 wire Pt100 probes, congure internal jumper ‘T’ at posion
5-6 (see secon 1.9). For 2 wire Pt100 probes, congure internal
jumper ‘T’ at posion 4-5. Compensaon of the wire resistance for 2
wire probes can be manually congured with the parameter ‘Oset
reading’ (‘oFFS’) (see secon 1.21) which allows to congure a xed
number of counts to be added to the reading.
•Resoluon and units
The temperature resoluon using Pt and Ni temperature probes is
congurable to 1º or 0.1º. Reading can be congured in ºC (degrees
Celsius) or ºF (degrees Fahrenheit).
•Sensor break detecon
In case of sensor break, the instrument will show ‘h.ovr’ or ‘h.udr’
(see Table 18) depending on the broken cable.
•Alpha temperature coecient
The instrument accepts Pt probes (Pt100, Pt500, Pt1000) with
‘Alpha’ parameter of ‘0.0385’ and ‘0.0390’ (see secon 1.28.7). This
parameter is associated to the specic model of probe installed.
Sensor Jumper ‘S’
(see secon 1.9)
Jumper ‘T’
(see secon 1.9)
Range in ºC
(in ºF)
Total error Connecon
( terminals)
Current at
sensor
Pt100 3 wires F H J 5-6 -200 / 700 ºC
(-328 / 1292 ºF)
<1º
2 (Pt+)
4 (Pt -)
5 (sense)
< 900 uA
Pt100 2 wires F H
4-5
-200 / 700 ºC
(-328 / 1292 ºF)
2 (Pt+, Ni+)
4 (Pt -, Ni-)
Pt500 F -150 / 630 ºC
(-238 / 1166 ºF) < 90 uA
Pt1000 F -190 / 630 ºC
(-310 / 1166 ºF) < 90 uA
Ni100 F H -60 / 180 ºC
(-76 / 356 ºF) < 900 uA
Ni200 F H -60 / 120 ºC
(-76 / 248 ºF) < 900 uA
Ni1000 F -60 / 180 ºC
(-76 / 356 ºF) < 90 uA
Table 11 - Ranges of temperature for Pt and Ni probes
•Terminal 5 ‘mulfuncon’ - ‘Pt100 3 wire’ or ‘External control’
To congure for 3 wire Pt100 probes, set internal jumper ‘T’ at
posion 5-6 (see secon 1.9). Terminal 5 will be assigned to the
connecon of the third wire of the Pt100 probe, for automac wire
resistance compensaon purposes, up to 30 R.
To congure for 2 wire Pt100 probes, set internal jumper ‘T’ at
posion 4-5 (see secon 1.9). Terminal 5 will be congured as ‘EK’
external control funcon. See secon 1.9 for a list of available
funcons.
•Start-up, connecons and jumpers
For instrument start-up follow the steps listed at secon 1.7. Signal
connecons are indicated at secon 1.5. Locaon for internal
jumpers is indicated at secon 1.9.
See below a list of typical connecons :
Pt+, Ni+
Pt-, Ni-
12345
•other probes 2 wires•Pt100 3 wires
Pt-
Sense
Pt+
12345

12
DP20 Economical Multisignal Meter Instruction Manual
• Accepted NTC probes
The NTC probe is a temperature variable resistor
with a temperature - resistance curve dened by two
parameters called ‘R25’ and ‘beta’. By default, the
instrument is congured for a standard NTC with ‘R25’
of 10K and ‘beta’ of 3500. The measured temperature ranges from
-60 ºC to 150ºC.
Dierent NTC probes can be used, by conguring the instrument for
dierent values of ‘R25’ and ‘beta’. The instrument measures
resistance from 100 R up to 1 MOhm. Use ‘Table 12’ to write down
values for your NTC.
• Parameters ‘R25’ and ‘Beta’
The instrument accepts values of ‘beta’ between 2500 and 5500,
and values of R25 between 1.0 K and 200.0 K
• Resoluon and units
The temperature resoluon using NTC temperature probes is
congurable to 1º or 0.1º. Reading can be congured in ºC (degrees
Celsius) or ºF (degrees Fahrenheit).
Range
of measure
NTC probe
Temp. R25 Beta
100 R
1 MOhm
Table 12 - Data from NTC datasheet
•Sensor break detecon
In case of sensor break, the instrument will show ‘h.ovr’ or ‘h.udr’
(see Table 18) depending on the broken cable.
•Terminal 5 ‘mulfuncon’ - External control
Terminal 5 remains congured as ‘EK’ external control funcon. See
secon 1.9 for a list of available funcons.
•Start-up, connecons and jumpers
For instrument start-up follow the steps listed at secon 1.7. Signal
connecons are indicated at secon 1.5. Locaon for internal
jumpers is indicated at secon 1.9.
See below connecons for NTC probe :
1.14 Measuring with NTC probes
NTC ‘R25’
(congurable)*
Jumper ‘S’
(see secon 1.9)
Jumper ‘T’
(see secon 1.9)
Range
of measure
Accuracy
(% of reading)
Connecon
( terminals)
Beta
(congurable)
10K F K 4-5
from -60 º C
to 150
º C
<1.5% of
reading
2 (NTC +)
4 (NTC -) 3500
Table 13 - *‘Beta’ is congurable from 2000 to 5500. ‘R25’ is congurable from 1.0 K up to 200.0 K.
ntc +
ntc -
12345
1.15 Measuring with PTC probes
• Accepted PTC probes
The instrument accepts direct connecon of PTC
probes. Accepted PTC probes are listed at ‘Table 14’.
• Resoluon and units
The temperature resoluon using PTC temperature probes is
congurable to 1º or 0.1º. Reading can be congured in ºC (degrees
Celsius) or ºF (degrees Fahrenheit).
Family Sensor Jumper ‘S’
(see secon 1.9)
Jumper ‘T’
(see secon 1.9)
Range in ºC
(in ºF)
Total error
KTY 121 KTY81-121
KTY82-121 F
4-5 -55 / 150 ºC
(-67 / 302 ºF) <1ºKTY 210 KTY81-210
KTY82-210 FHK
KTY 220 KTY81-220
KTY82-220 FHK
Table 14 - Ranges of temperature for PTC probes
•Sensor break detecon
In case of sensor break, the instrument will show ‘h.ovr’ or ‘h.udr’
(see Table 18) depending on the broken cable.
•Terminal 5 ‘mulfuncon’ - External control
Terminal 5 remains congured as ‘EK’ external control funcon. See
secon 1.9 for a list of available funcons.
ptc +
ptc -
12345
•Start-up, connecons and jumpers
For instrument start-up follow the steps listed at secon
1.7. Signal connecons are indicated at secon 1.5.
Locaon for internal jumpers is indicated at secon 1.9.
See below connecons for PTC probe :

13
DP20 Economical Multisignal meter Instruction Manual
• Measuring process signals
The instrument accepts the measure of process signals
in 4/20 mA and 0/10 Vdc. The instrument provides
excitaon voltage to power up transducers.
• Scaling
The instrument allows to scale the reading to 4 digits (9999 / -1999)
with congurable decimal point to any posion. The ‘second scaling’
funcon can also be used (see secon 1.24).
•Maximum oversignal
‘Maximum oversignal’ is the maximum signal accepted by the in-
strument. Higher signal values may cause instrument damage. Low-
er values are non destrucve but may be out of accuracy specica-
ons.
•Response mes
The response me to a signal step is 300 mSeconds, independent of
the signal range selected.
•Terminal 5 ‘mulfuncon’ - ‘Vexc’ or ‘External control’
To congure the +15 Vdc excitaon voltage at terminal 5, set internal
jumper ‘T’ at posion 1-2 (see secon 1.9). Transducers with a
consumpon of up to 30 mA can be powered from this terminal.
To congure the ‘EK’ external contact funcon at terminal 5, set
internal jumper ‘T’ at posion 4-5 (see secon 1.9). See secon 1.9
for a list of available funcons.
1.16 Process measures
1.17 Measuring frequency
•Start-up, connecons and jumpers
For instrument start-up follow the steps listed at secon 1.7. Signal
connecons are indicated at secon 1.5. Locaon for internal
jumpers is indicated at secon 1.9.
See below a list of typical connecons :
mA +
mA -
12345
•signal 4/20 mA acve
signal ( mA-)
•signal 4/20 mA passive
+15 Vdc (mA+)
12345
+Vdc
common
•signal 0/10 Vdc passive
+15 Vdc
12345
+Vdc
common
•signal 0/10 Vdc acve
12345
• How the instrument measures frequency
The instrument measures frequency from an AC
voltage (Vac) or AC current (Aac) signal. The instrument
detects each ‘0’ crossing of the signal, either ‘0 Vac’
or ‘0 Aac’. All available Vac and Aac signal ranges are
accepted as frequency input signal.
• How to congure the instrument to measure frequency
To measure frequency from a Vac signal, select the internal
jumpers for the desired AC voltage range (see secon 1.9), connect
the signal for the selected voltage range (see secon 1.10), and
congure the instrument to measure frequency (see secon 1.29.1).
The same applies to measure frequency from Aac signals. See
example at secon below.
Ranges
of measure
Scale
by default Scalable
AC signal
(see secon 1.9)
Jumper
'T'
Response
me
Accuracy
(% reading)
15 to 100Hz 0/100.0 from 9999
to -1999
select Vac or
Aac range
4-5 70mSec. <0.15% of
reading
Table 16 - Ranges of measure for frequency
• Scaling
The default resoluon is 0.1 Hz. The instrument allows to scale the
reading to 4 digits (9999 / -1999) with congurable decimal point
to any posion. The ‘second scaling’ funcon can also be used (see
secon 1.25).
• Maximum and minimum signal
Frequency signals below 15 Hz are measured as ‘0’. Frequency
signals higher than 100 Hz are out of accuracy. Signals higher than
1000 Hz will read ‘display overow’ ‘d.oVr’ error.
Ranges
of measure
Scale
by default Scalable
Jumper ‘S’
(see secon 1.9)
Jumper ‘T’
(see secon 1.9)
Accuracy
(%FS)
Max.
oversignal
Connecon
(terminals)
Zin
4/20 mA
passive
(needs Vexc.)
0/100.0 de 9999
a - 1999
D
1-2
<0.15% 25 mA
2 (signal)
5 (Vexc) 4.7 Ohm
acve 4-5 2 (mA+)
4 (mA-)
0/10 Vdc
passive
(needs Vexc.)
A
1-2
<0.20% 25 Vdc
2 (+Vdc)
4 (comm.)
5 (Vexc) 1 M
acve 4-5 2 (+Vdc)
4 (comm.)
Table 15 - Ranges of measure for process signals
• Example
To measure the 50 Hz frequency from a 230 Vac
power line, select jumpers ‘GI’ for 600 Vac signal
range (see secon 1.9), connect signal to terminals
‘1’ and ‘4’ (see secon 1.10), and congure
‘frequency’ at the input signal conguraon menu
(see secon 1.29.1).

14
DP20 Economical Multisignal Meter Instruction Manual
Ranges
of measure
Scale
by default
Scalable
Jumper ‘S’
(see secon 1.9)
Jumper ‘T’
(see secon 1.9)
Accuracy
(% of reading)
0 to 5 K 5.000 from 9999
to -1999
F H K
4-5 <1.5% of
reading
0 to 50 K 50.00 F K
Table 15 - Ranges of measure for resistances
• Measuring resisve signals
The instrument accepts the measure of resistances and
provides two ranges of measure from 0 to 5 K and from
0 to 50 K.
•Compensang the resistance of the signal wire
Resistances are measured with 2 wires system. To compensate for
the possible error introduced by the resistance of the signal wires,
the instrument allows to congure a xed number of counts to be
added to the reading, both in posive or negave. This is done with
the parameter ‘Oset reading’ (‘oFFS’) (see secon 1.21).
•Scaling
The instrument allows to scale the reading to 4 digits (9999 / -1999)
with congurable decimal point to any posion. The ‘second scaling’
funcon can also be used (see secon 1.24).
1.18 Measures of resistance
•Response mes
The response me to a signal step is 300 mSeconds, independent of
the signal range selected.
•Terminal 5 ‘mulfuncon’ - External control
Terminal 5 remains congured as ‘EK’ external control funcon. See
secon 1.9 for a list of available funcons.
•Start-up, connecons and jumpers
For instrument start-up follow the steps listed at secon 1.7. Signal
connecons are indicated at secon 1.5. Locaon for internal
jumpers is indicated at secon 1.9.
See below connecons for resistance measures :
res +
res -
12345
Nominal
pot. value
Ranges
of measure
Scale
by default
Scalable
Jumper ‘S’
(see secon 1.9)
Jumper ‘T’
(see secon 1.9)
Accuracy
(% FS)
from 500 R
up to 20 K 0 to 100 % 0/100.0 from 9999 to -1999 A 2-3 <0.5%
Table 16 - Ranges of measure for potenometers
• Measuring potenometers
The instrument accepts the measure of 3 wire
potenometers, with a single default range of 0/100 %
of the potenometer span.
•Scaling
The instrument allows to scale the reading to 4 digits (9999 / -1999)
with congurable .
•Response mes
The response me to a signal step is 300 mSeconds, independent of
the signal range selected.
•Terminal 5 ‘mulfuncon’ - ‘Vexc’
To measure potenometer signals, set internal jumper ‘T’ at posion
2-3 (see secon 1.9). Terminal 5 will be assigned to a +5 Vdc excitaon
voltage for the potenometer.
1.19 Measures of potenometers
•Start-up, connecons and jumpers
For instrument start-up follow the steps listed at secon 1.7. Signal
connecons are indicated at secon 1.5. Locaon for internal
jumpers is indicated at secon 1.9.
See below connecons for measure of potenometers ::
Signal
Pot- (comm.)
Pot+ (5 Vdc)
12345

15
DP20 Economical Multisignal meter Instruction Manual
1.20 ‘Fast access’ menu
The ‘fast access’ menu allows to congure the front key ‘UP’ (‘5’) as a
direct access to the alarm 1 and / or alarm 2 setpoint values, and / or
the memory of maximum and minimum reading. The objecve is to
provide the operator with a fast and direct access to alarm setpoints,
without accessing the standard conguraon menu.
Access to ‘fast access’ menu is sll allowed even with acve
‘password’ funcon, allowing the operator to modify the alarm
setpoints, while sll blocking any other change on the conguraon.
The ‘fast access’ menu is congurable, and it allows to assign to the
front key none, one, several or all of the available funcons. In case
of conguring access only to alarm 1, when pushing front key ‘UP’
(‘5’), the display directly access the setpoint value of alarm 1 (same
for alarm 2)
To congure the ‘fast access’ menu see secon 1.28.4.
1.21 Scaling
The instrument can scale the reading to any value between 9999 and
-1999 and congure the decimal point posion, for all signal ranges
except temperature ranges (thermocouples, Ni and Pt sensors, NTC
and PTC sensors) are not scalable. The scaling conguraon is a
simplied two steps process :
1. congure at the ‘Display Low’ (‘d.Lo’) parameter the reading
value associated to the low signal range
2. congure at the ‘Display High’ (‘d.Hi’) parameter the reading
value for the high signal range
Some examples are explained below:
• for AC voltage and current ranges, for example 0/400 Vac,
congure at ‘d.Lo’ the reading for a signal of 0 Vac. Congure at
‘d.Hi’ the reading for a signal of 400 Vac.
• for DC voltage and current ranges, for example ±400 Vdc,
congure at ‘d.Lo’ the reading for a signal of 0 Vdc. Congure at
‘d.Hi’ the reading for a signal of 400 Vdc.
• for process ranges, for example 4/20 mA, congure at ‘d.Lo’
the reading for a signal of 4 mA. Congure at ‘d.Hi’ the reading
for a signal of 20 mA.
• for potenometer ranges, congure at ‘d.Lo’ the reading for a
signal of 0% (0 R). Congure at ‘d.Hi’ the reading for a signal of
100% (nominal of the potenometer).
To congure the scaling see secon 1.28.2.
1.22 Oset reading
The instrument provides a ‘second scaling’, independent and
addional to the standard scaling explained at secon 1.20. Control
of the scaling to be applied, with a free potenal contact called
‘External control’. To congure the ‘second scaling’ :
1. congure the internal jumper ‘T’ to acvate the ‘EK’ external
control funcon (see secon 1.9).
2. associate the external control to the ‘second scaling’ funcon,
at the conguraon menu ‘ScL.2’ set the value ‘EXt.c’ (‘External
control’) (see secon 1.28.6)
3. congure the scaling at the conguraon menu ‘Tools’ \ ‘ScL.2’
(see secon 1.28.7).
4. apply connecons to the external control
1.23 ‘Eco’ mode
The ‘external control’ funcon allows to acvate, by closing a free
potenal contact, one of the following congurable funcons :
• acvaon of the second scaling
• change the acve decimal point
• ‘hold’ the reading
• 'tare' funcon
• visualize de memory of maximum (or minimum)
To congure the ‘EK’ external contact funcon, set internal jumper ‘T’
at posion 4-5 (see secon 1.9). The ‘EK’ external control funcon is
not compable with funcon ‘Vexc’ (excitaon voltage), the measure
of 3 wire Pt100, and the measure of potenometers.
To assign a funcon to the ‘external control’ see the conguraon
menu at ‘External control’ (see secon 1.28.6).
The funcon associated to the ‘EK’ external control acvates when
short-circuing terminal 5 and terminal 4.
1.24 External control
The ‘Eco’ mode reduces the consumpon of the instrument to a level
of 0.3 W. The ‘Eco’ mode turns o the display, while the right decimal
point remains ashing gently on and o, showing that the instrument
is running on the background.
Display will turn on when an alarm acvates, or when the operator
touches any of the front keys. If no alarms are acve, and there is
no interacon from the operator, the instrument will turn o the
display. The waing me before display turn o is congurable from
5 to 255 seconds.
To congure the ‘Eco’ mode see the conguraon menu at ‘Tools’ \
‘Eco’ (see secon 1.28.7).
1.25 Second scaling
The ‘Oset reading’ (‘oFFS’) parameter allows a number of counts
to be added to the reading. This is specially useful to manually
compensate for resistance errors due to wire resistance, when
measuring with 2 wires Ni and Pt probes, and resistances. Applies
to all signal ranges. See conguraon menu at ‘Tools’ \ ‘oFFS’ (see
secon 1.28.7).
* Risk of electric shock. The ‘EK’ external control funcon shares termi-
nal 4 with the common of the input signal connecon. When measur-
ing dangerous voltages AND using ‘EK’ external control contact, apply
the appropriate protecons to isolate the operator from dangerous voltages.

16
DP20 Economical Multisignal Meter Instruction Manual
1.26 To open the instrument
To open the housing and access the internal circuits, use a at
screwdriver to unlock clips ‘D’, ‘C’, ‘B’ and ‘A’, in this order. Remove the
front lter. Let the inside of the instrument slide out of the housing.
To reinsert the instrument make sure that all modules are correctly
connected to the pins on the display module. Place all the set into
the housing, assuring that the modules correctly t into the internal
guiding slides of the housing. Once introduced, place again the front
lter at cover ‘X’, and then insert clips ‘A’, ‘B’, ‘C’ and ‘D’, in this order.
* Risk of electric shock. Removing the front cover will grant
access to the internal circuits. Disconnect the power and
the input signal to prevent electric shock to the operator.
Operaon must be performed by qualied personnel only.
The internal structure of the instrument is shown in the graphic
below.
Module ‘Opt.2’ connects to module ‘Opt.1’. Module ‘Opt.1’ connects
to the display. Oponal modules can be replaced, changed, added or
removed simply by placing the proper module at the proper locaon.
See secon 2 for a list of available oponal modules.
Front lter Display
Oponal modules
Housing
Opt.1
Opt.2
Motherboard
Opt.1
X
A
C
BD

17
DP20 Economical Multisignal meter Instruction Manual
The instrument has two menus accessible to the user :
‘Conguraon menu’ (key SQ) (<)
‘Fast access’ menu (key UP) (5)
Conguraon menu
The ‘conguraon menu’ modies the conguraon parameters
to adapt the instrument to the applicaon needs. To access the
‘conguraon menu’ press for 1 second the SQ (<) key. This access
can be blocked by acvang the ‘Password’ (‘PASS’) funcon.
While operang the ‘conguraon menu’, the alarm status is ‘hold’
to the status they had before accessing the menu, and the output
and control modules remain in ‘error’ state. When leaving the
‘conguraon menu’, the instrument applies a system reset, followed
by a brief disconnecon of the alarms and the output and control
modules. Funconality is then recovered.
For a detailed explanaon on the ‘conguraon menu’ see secon
1.29, and for a full view of the ‘conguraon menu’ structure see
secon 1.29.
‘Fast access’ menu
The ‘fast access’ menu is an operator congurable menu, providing
fast and direct access to the most usual funcons of the instrument
with a single key pad stroke. Press key UP (5) to access this menu.
See secon 1.19 for a list of funcons eligible for ‘fast access’ in
this instrument. The ‘Password’ (‘PASS’) funcon does not block
access to this menu. Accessing and modifying parameters in the
‘fast access’ menu does not interfere with the normal funconality
of the instrument, and it does not generate any system reset when
validang the changes.
Front key pad descripon
Key SQ (<) - press the SQ (<) key for 1 second to access the
‘conguraon menu’. Inside the menu, the SQ (<) key funcons
as a ‘ENTER’ key. It selects and accesses the menu opon currently
displayed. At menus with numerical value entries, it validates the
number displayed.
Key UP (5) - the UP (5) key gives access to the ‘fast access’ menu.
Inside the menus, it moves vercally through the dierent menu
opons. At menus with numerical value entries, it modies the digit
selected by increasing its value to 0, 1, 2, 3, 4, 5, 6, 7, 8, 9.
Key LE (3) - inside the menus, the LE (3) key funcons as the
‘ESCAPE’ key. It leaves the selected menu, and eventually, will leave
the whole menu. When leaving the ‘conguraon menu’ with the
LE (3) key, the changed parameters are acvated. At menus with
numerical value entries, the LE (3) key allows to select the acve
digit. To modify the value of the selected digit use the UP (5) key.
Menu ‘rollback’
Aer 30 seconds without interacon from the operator, the
instrument will rollback and leave the ‘conguraon menu’ or the
‘fast access’ menu. All changes will be discarded.
1.27 How to operate the menus
Messages and errors
‘h.udr’
‘h.oVr’
Hardware underrange (‘h.udr’) / overrange (‘h.ovr’).
Input signal is lower / higher than the minimum /
maximum signal the instrument can detect.
‘d.udr’
‘d.oVr’
display underrange (‘d.udr’) / overrange (‘d.ovr’). The
instrument already displays the minimum / maximum
value possible (9999 / -1999).
‘Err.0’* at the ‘scaling’ (‘ScAL’) menu entry, the dened slope is
higher than ‘5000’ (slope almost vercal). Entered values
are dismissed and default values are acvated.
‘Err.1’ incorrect password.
Table 17 - Messages and error codes
The error messages are shown on display in ash mode.
Input
Example of operaon inside the
‘conguraon menu’.
1. The SQ (<) key enters into the
‘conguraon menu’.
2. The SQ (<) key enters into the
‘InP’ opon menu.
3. The UP (5) key moves through
the menu opons.
4. The SQ (<) key selects the
desired range and returns to the
‘InP’ menu.
5. The LE (3) key leaves the
actual menu level and moves to
the previous menu level.
6. The LE (3) key leaves the
‘conguraon menu’. Changes
are applied and saved at this
moment.
(2)
(3)
(3)
(3)
(3)
(3)
(4)
(4)
(4)
(4)
(5)
(5)
(5)
(5)
(3)
(3)
(6)
(6)
(1)
1.28 Messages and errors
Note : example menu indicated
above is for informaon purposes
only, and may not match with
the actual menu entries of the
instrument.

18
DP20 Economical Multisignal Meter Instruction Manual
1.29 Conguraon menu
Press ‘SQ’ (<) for 1 second to access the ‘conguraon menu’.
For a descripon on how to operate inside the menus see secon
1.26. For a full vision of the ‘conguraon menu’ structure see
secon 1.29.
Access the ‘Input’ (‘InP’) menu to select the input signal range. For
a correct reading, the internal jumper ‘T’ (see secon 1.9) must also
be selected accordingly.
The instrument oers the following signal ranges :
• ‘AC signals’ (‘Ac’) - select a range between 600 Vac, 200 Vac,
20 Vac, 2 Vac, 200 mVac, 60 mVac, 5 Aac and 20 mAac. The AC
measure ranges provide ‘True RMS’ reading.
• ‘DC signals’ (‘dc’) - select a range between ±600 Vdc, ±200 Vdc,
±20 Vdc, ±2 Vdc, ±200 mVdc, ±60 mVdc, ±5 Adc and ±20 mAdc. Dc
measures are bipolar.
• ‘Process’ (‘Proc’) - select 4/20 mA or 0/10 Vdc. The instrument
provides excitaon voltage to power up transducers at terminal 5.
To congure the excitaon voltage, see secon 1.16.
• ‘Thermocouples’ (‘tc’) - select the thermocouple type between
K, J, E, N, L, R, S, B, T and C. The instrument automacally
compensates for the thermocouple cold juncon.
• ‘RTD probes’ (‘rtd’) - the ‘rtd’ menu oers temperature resisve
probes type Pt (planum) and Ni (Nickel). Select the type of probe
from the available opons Pt100 3 wire, Pt100 2 wire, Pt500,
Pt1000, Ni100, Ni200 and Ni1000. For measures with 2 wires, a
manual compensaon for the wire resistance error is available
using parameter ‘Oset reading’ (‘oFFS’) (see secon 1.21).
• ‘NTC probes’ (‘ntc’) - select the ‘ntc’ menu to congure the
input for NTC probes. To correctly congure the measure for
NTC, two parameters need to be dened : rst the resistance of
the NTC probe at 25º (‘r.25’) and parameter ‘beta’ (‘bEtA’). The
instrument accepts beta values between 2000 and 5500. For more
informaon on NTC measures see secon 1.14.
• ‘PTC probes’ (‘Ptc’) - select the ‘ptc’ menu to congure the input
for PTC probes. Select K121 for PTC probes from the KTY-121
family (KTY81-121 and KTY82-121). Select K220 for PTC probes
from the KTY-210 family (KTY81-210 and KTY82-210) and KTY-220
(KTY81-220 and KTY82-220). For more informaon on PTC probes
see secon 1.15.
1.29.1 Input signal ranges
Input AC signals
600 Vac range
200 Vac range
20 Vac range
2 Vac range
200 mVac range
60 mVac shunt range
5 Aac range
20 mAac range
DC signals
±600 Vdc range
±200 Vdc range
±20 Vdc range
±2 Vdc range
±200 mVdc range
±60 mVdc shunt range
±5 Adc range
±20 mAdc range
Process
4/20 mA range
0/10 Vdc range
Thermocouples
thermocouple K
thermocouple J
thermocouple E
thermocouple N
thermocouple L
thermocouple R
thermocouple S
thermocouple B
thermocouple T
thermocouple C
600U
600U

19
DP20 Economical Multisignal meter Instruction Manual
1.29 Conguraon menu (cont.)
Resistance
range 0 to 5 K
range 0 to 50 K
Scale the reading at the ‘Scaling’ (‘ScAL’) menu. Temperature ranges
(thermocouples, Pt and Ni probes, NTC and PTC probes) have direct
temperature indicaon and are not scalable.
To congure the scaling, enter the ‘Decimal point’ (‘dP’) parameter
and select the desired posion for the decimal point, using key ‘LE’
(3).
Then congure at the ‘Display Low’ (‘d.Lo’) parameter the reading
value associated to the low signal range and congure at the ‘Display
High’ (‘d.Hi’) parameter the reading value for the high signal range.
For more informaon see secon 1.20.
1.29.2 Scaling
Setpoint
Hysteresis
Alarm typeAlarm 1
The instrument has 2 independent and congurable alarms.
Control the independent acvaon of relays A1 installed (oponally)
at slots 1 and 2 (see secon 2.1) from menu entries ‘Alarm 1’ (‘ALr1’)
and ‘Alarm 2’ (‘ALr2’). Alarms control also the acvaon of front leds
‘1’ and ‘2’ located as indicated at secon 1.2.
To congure the alarms, enter at the alarm menu (‘ALr1’, or ‘ALr2’)
and congure the following parameters :
• at the ‘Alarm type’ (‘TypE’) parameter select alarm as as a
maximum type alarm (‘MAX’) or a minimum type alarm (‘MIn’).
The maximum type alarm (or minimum type) acvates when the
display value is higher (or lower) than the setpoint value.
• at the ‘Setpoint’ (‘SEt’) parameter enter the value for the alarm
acvaon point. This parameter is eligible for conguraon through
the ‘Fast access’ menu (see secon 1.19).
• congure the hysteresis value at ‘Hysteresis’ (‘hySt’). The
hysteresis applies to the deacvaon process of the alarm. The
alarm deacvates when the reading has passed the setpoint value
plus the hysteresis value. Hysteresis helps to avoid repeve
switching of the alarm relays, due to uctuang input signals
around the setpoint.
1.29.3 Alarms
Ni1000
PTC probes KTY 210 and 220 family
KTY 121 family
Scaling Decimal point
Display Low
Display High
NTC probes
res. at
25º
beta
RTD probes
Pt1000
Ni100
Ni200
Pt100 a 2 hilos
Pt100 a 3 hilos
• ‘Resistance’ (‘rES’) - select 5 K for a measuring range from 0 to
5 KOhms or select 50 K for a measuring range of 0 to 50 KOhms.
For a manual compensaon for the error introduced by the signal
wires, see parameter ‘Oset reading’ (‘oFFS’) (see secon 1.21).
• ‘Potenometer’ (‘Pot’) - potenometer measure has a single
range, valid for any potenometer with nominal value between
500 R and 20 K.
•‘Frequency’ (‘FrEq’) - frequency measure has no selectable
ranges. The instrument reads frequency up to 100 Hz, within
accuracy specicaons. For more informaon on frequency
measuring see secon 1.17.
Potenometer
pt500
FrEq
Frequency

20
DP20 Economical Multisignal Meter Instruction Manual
1.29 Conguraon menu (cont.)
Memory of
minimum
Display hold
Memory of
maximum
External control
Decimal point 1
Decimal point 2
Decimal point 0
Second scaling
Decimal point 3
Disabled
An external on / o control can be connected to the rear of the
instrument. The operator can then control the acvaon of a
congured funcon based on the state of this control. Funcon
remains acvated while the external contact is closed, and will
deacvate when contact is open. To congure the funcon associated
to the external control, enter the menu ‘External control’ (‘EXt.c’).
• select ‘Disabled’ (‘oFF’) to have no funcon associated.
• select parameter ‘Memory of maximum’ (‘MAX’) to visualize on
display the memory of maximum reading.
• select parameter ‘Memory of minimum’ (‘MIn’) to visualize on
display the memory of minimum reading.
• select parameter ‘Display hold’ (‘hoLd’) to maintain the actual
reading ‘on hold’. Open the external contact to free the reading
• select ‘Tare funcon’ (‘tArE’) to acvate a tare to the signal. The
actual signal will read ‘0’. The calibraon is not changed.
Parameters ‘Memory of maximum’ (‘MAX’), ‘Memory of minimum’
(‘Min’) and ‘Display hold’ (‘hoLd’) show on display a value which is
not the actual measured input signal, therefore the values for this
parameters will be shown in ash mode, indicang that the actual
value is not the actual input value.
• select parameter ‘Decimal point 0’ (‘dP.0’) to remove the decimal
point on display.
• select parameter ‘Decimal point 1’ (‘dP.1’) to acvate the decimal
point at posion XXX.X
• select parameter ‘Decimal point 2’ (‘dP.2’) to acvate the decimal
point at posion XX.XX
1.29.6 External control
The key ‘UP’ (5) at the front of the instrument gives access to a
list of funcons congurable by the operator. See secon 1.26 for an
explanaon on how to operate the ‘fast access’ menu.
The ‘Key UP (Fast access)’ (‘K.uP’) menu allows user to select which
funcons will be accessible when pressing the front key ‘UP’ (5).
Select ‘on’ to acvate each funcon.
• the ‘Setpoint 1’ (‘ALr1’) funcon allows user to visualize and
modify the setpoint value of alarm 1.
• the ‘Setpoint 2’ (‘ALr2’) funcon allows user to visualize and
modify the setpoint value of alarm 2.
•the ‘Memory of maximum’ (‘MAX’) or ‘Memory of minimum’
(‘MIn’) allows user to visualize the memory of maximum and
minimum reading. The memory resets when the instrument
restarts (power o-on cycle, or when leaving the conguraon
menu with a change to be applied).
• the ‘Tare funcon’ (‘tArE’) allows user to visualize the actual
tare value.
1.29.4 Fast access
If only a single funcon is selected for the ‘fast access’ menu, pressing
the the ‘UP’ (5) key will shortly display the funcon name and then
automacally jump to the funcon value.
1.29.5 Super fast access
Key UP
(fast access)
Memory of
maximum
Memory of
minimum
Setpoint 1
Setpoint 2
Setpoint
Hystereses
Alarm type
Alarm 2
tArE
tArE
Tare funcon
Tare funcon