Operating Modes; Ordering Codes - Delta OHM HD 2047 Manual De Instrucciones

Description
HD 2047 is a handheld instrument designed to test and calibrate instruments with
Pt100 input (100Ω a 0°C) and voltage/current outputs, such as active or passive tem-
perature transmitter, recorders, testers and data loggers, etc.
HD 2047 simulates up to 24 fixed values, following the Pt100 scale from -100°C up to
+500°C, with a 2, 3 or 4 -wire connections. The set points selection is made through a
rotary switch placed on the front part of the instrument. Whatever operating mode is
chosen, Pt100 output is always active.
HD 2047 can measure with high accuracy voltage/current outputs of any transmitter
connected to the instrument input: -20V...+20V continuous voltage range and 0...22mA
continuous current range.
The instrument can also calibrate and test the working process of a passive transmitter
and simulates the Pt100 temperature input, providing power supply to the transmitter
and measuring the current inside it with no external power supply required.
The instrument is provided with three different keys:
ON/OFF turns the instrument on and off. Upon power on, HD 2047 sets automatically
to voltage measuring mode.
MODE selects cyclically the operating mode; by pressing the key consecutively, you
select in the following order:
1. voltage measurement;
2. current measurement;
3. current measurement with 4...20mA loop power supply.
RANGE during the measuring process (voltage/current), this mode allows the full
scale selection and the best resolution for the measuring in progress:
-1.999...+1.999, -19.99...+19.99 and -199.9...+199.9.
L'HD 2047 is internally protected against any kind of connecting error made by the op-
erator: it is highly recommended anyway not to exceed voltage/current limits shown in
technical data.
A battery sign on the display lights up to indicate that batteries are low and must be re-
placed.

Operating modes

1) How to measure input continuous voltage
The instrument measures positive and negative continuous voltages up to 20V maxi-
mum amplitude.
Operating mode (see fig.1):
• select "input voltage" operating mode by pressing MODE key. The red led corre-
sponding to "READ V" lights up;
• connect the wires to the sockets, as shown in fig.1;
• select the correct range depending on the voltage, by pressing RANGE key. An
OverRange measurement is indicated by a 1 sign, lighted on the display left part: in
this case you just press RANGE key to pass to the following measuring range.
Warning: a) For safety reasons, never apply any voltage superior to 48Vdc to
the sockets.
b) The instrument only measures continuous voltage.
2) How to measure input continuous current
The instrument measures positive and negative current up to 22mA maximum ampli-
tude.
Operating mode (see fig.2):
• select "input current" operating mode by pressing MODE key. The red led corre-
sponding to "READ mA" lights up;
• connect the wires to the sockets, as shown in fig. 2, without changing the correct
polarity: to be measured, the current must be delivered through the positive (+)
socket;
• select the correct range depending on the current, by pressing RANGE key. An
OverRange measurement is indicated by a 1 sign, lighted on the display left part: in
this case you just press RANGE key to pass to the following measuring range.
Warning: a) The instrument measures continuous current up to a 22mA maxi-
mum amplitude.
b) The instrument only measures continuous current.
c) The instrument is provided with an internal protection circuit to
limit the current within 25mA.
3) How to calibrate and test passive transmitters
The instrument can power a 4...20mA loop, measure the current and simulate 24
fixed values of a Pt100 at the input of a temperature transmitter, with no external
power supply required.
Operating mode (see fig.3):
• select "2 WIRE" operating mode by pressing MODE key. The corresponding red
led lights up;
• connect the 4...20mA loop wires to the left sockets, as shown in fig. 3, without
changing the correct polarity; the current supplied by HD 2047 is delivered through
the positive (+) socket;
• select the correct range depending on the current you need to measure. An Over-
Range measurement is indicated by a 1 sign, lighted on the display left part: in this
case you just press RANGE key to pass to the following measuring range;
• select the temperature value by turning the rotary switch.
Warning: a) The delivered current has a maximum amplitude of 25mA.
b) A 14Vdc voltage is supplied to the current loop.
c) In case of 2 or 3-wire connections, do not make jumpers on un-
used sockets; it is highly recommended to leave them free.
4) How to simulate a Pt100 sensor
The instrument can simulate 24 temperature fixed values of a Pt100 sensor (100Ω
at 0°C, coefficient α=0.003850) with 2, 3 or 4 -wire connections. The selection is
made through a rotary switch placed on the front part of the instrument.
Operating mode:
• make the connection as shown in fig. 3, 4 o 5, depending on the number of wires;
• select the temperature value by turning the rotary switch.
Warning: a) In case of 2 or 3- is highly recommended to leave them free.
b) MODE and RANGE keys have no effects on the resistance selec-
tion.
c) The internal protection circuit reduces to approximately 1.2V the
drop on resistances: this means the measuring current has a maxi-
mum amplitude of 20mA.
Technical data (@ 20°C)
Power supply
Operating time using 1.5V 160 h (in "V READ" and "mA READ" operating mode)
batteries with capacity of 2250mAh
30 h @ loop current = 12mA (in "2 WIRE" operating mode)
Low batteries signal
Operating temperature
Operating relative humidity
Weight/dimensions
CONTINUOUS VOLTAGE MEASURE
Measure range
Accuracy
Input resistance
Maximum voltage applied
to terminals
CONTINUOUS CURRENT MEASURE
Measure range
Accuracy ±(0.01mA+0.05% of range): range 0.00mA...19.99mA
Shunt resistance
Overload protection
PASSIVE TRANSMITTERS: POWER SUPPLY/ MEASURE
Measure range
Accuracy ±(0.01mA+0.05% of range): range 0.00mA...19.99mA
Shunt resistance
Overload protection
Maximum load @20mA
Applied voltage
SIMULATING A PT100
Pt100 (100Ω to 0°C, α=0.003850, EN60751, IEC751, BS1904)
Type of RTD
Temperature values
Accuracy
Room temperature effect
Maximum power loss
Maximum load current

Ordering codes

HD 2047 Pt100 Simulator measures current loop and voltage signals from transmitters.
The kit includes the instrument with batteries, a 4-wire and a 2-wire cable
(L=600 mm) for the connection.
GENERAL
4 batteries 1.5V, AA size (the input for the 9Vdc
external supplier is provided only upon request)
The battery sign lights up with a battery voltage
of about 3.6V
-5...+50°C
0...90%R.H. (not condensing)
580 g (without batteries) / 23x70x230 mm
-1.999V...+1.999V: 1mV resolution
-19.99V...+19.99V: 10mV resolution
±1mV: range -1.999V...+1.999V
±10mV: range -19.99V...+19.99V
1MΩ
48Vdc
0.00mA...19.99mA: 10µA resolution
0.0...22.0mA: 100µA resolution
±0.1mA: range 0.0mA...22.0mA
20Ω
Current limit: 25mA
0.00mA...19.99mA: 10µA resolution
0.0...22.0mA: 100µA resolution
±0.1mA: range 0.0mA...22.0mA
20Ω
Current limit: 25mA
700Ω
14Vdc
24 fixed values from -100 up to +500°C
±0.05% of simulated value
±5ppm / °C
125mW
20mA