Omega DP20 User Manual

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

Omega DP20 Specifications

General

Brand	Omega
Model	DP20
Category	Measuring Instruments
Language	English