Multifunction Intelligent
4-wire Isolated Signal Conditioner
IPAQ-4L is a
wire (mains powered) transmitter for temperature measurement and signal conditioning
applications. IPAQ-4L is designed for wall and
DIN rail mounting.
The high isolation of 4000 VAC between
input, output and power supply provides safe
and problem-free measurements.
The Windows based and user friendly software, IPRO 4, is used for transmitter configuration, documentation, monitoring and calibration purposes.
fully universal
and intelligent 4-
Performance and design:
Input-output-supply isolation 4000 VAC
• High level isolation between measurement
loops.
• Excellent filtering of noise and voltage spikes.
• Elimination of ground loops.
Excellent stability
• Long-term stability 0.1 %/year.
Enhanced total system accuracy
• Sensor error correction (for known sensor
errors).
• System error correction (against known
temperatures).
Designed for harsh conditions
• Excellent EMC performance.
• Durable due to protected PCBs.
Flexible and compact mounting
• Only 22.5 mm / 0.89 inch wide.
• Quick mounting on DIN rail.
• Extractable brackets for wall mounting.
Functions:
Current and voltage output
•Programmable: 0/4-20 mA, 0/1-5 V and 0/2-10 V
with direct or reversed action.
Input for RTD, T/C, mV, V, mA and resistance
•Reduced inventory costs.
•Simplified plant engineering.
True on-line communication
•Full access to all features while in operation.
Sensor diagnostics
•SmartSense detects low sensor isolation (essential
for correct measurements).
•Selectable sensor break action.
Simplified loop check-up
•The transmitter works as an accurate current
generator.
On-screen indications and line recording
•Valuable tools for temporary measurements.
5 years limited warranty
IPAQ-4L
Main features of IPAQ-4L
Accuracy and stability
IPAQ-4L is designed for applications with standard industrial demands on accuracy. To reach these demands, the
following factors are essential:
Linearity and calibration errors
-The use of quality compo-
nents and precision calibration equipment reduce these
errors, e.g. ±0.1 % of span for RTD inputs.
High long-term stability
-Internal “self calibration“, by
means of continuos adjustment of important parameters
after comparison with accurate built-in references, contributes to a stability of ±0.1 %/year.
Measurements with RTDs and other resistances
IPAQ-4L accepts inputs from standardized Platinum and
Nickel RTDs like Pt10…Pt1000 acc. to IEC 751 (α=0.00385),
Pt100 acc. to JIS 1604 (α=0.003916) and Ni100/Ni1000 acc.
to DIN 43760, as well as inputs from plain resistance sensors such as potentiometers. 3- or 4-wire connection can
be chosen.
Measurements with thermocouples voltage and current
IPAQ-4L accepts inputs from 11 types of standardized
thermocouples as well as plain mV, V and mA input.
For T/C input, the CJC (cold junction compensation) is
fully automatic, by means of an accurate measurement of
the terminal temperature. Alternatively, the CJC can be
disabled.
Customized linearization and Engineering units
The Customized linearization can be used to create a linearization curve for RTD, T/C, resistance, voltage and current
inputs. By combining Customized linearization with the use
of Engineering units, the transmitters can be programmed
to give a linear output corresponding to a specific measuring range expressed in the primary process value.
The sensor characteristics are described by a maximum of
9 data pairs. Fig. 1a and 1b.
Fig.1a
100
Sensor
output
0-50 mV
20
kPa
4
mA
Transmitter
System
Transmitter
output
4-20 mA
kPa
100
Process
value
0-100 kPa
Fig.1b
mV
50
0
Exemple of a system (sensor + transmitter) with an output linear to
the process value, in spite of a non-linear sensor.
Sensor
Sensor
Sensor or System error correction
IPAQ-4L offers two ways of improving the measurement
with temperature sensors:
Sensor error correction
- Known sensor errors compared
to the standard curve, e.g. for a calibrated sensor, are entered, and the transmitter automatically corrects for the
sensor errors. Fig. 2.
Fig.2
Sensor error correction
Sensor output
[Ω/mV]
∆T
2
∆T
1
T
min
.T
1
max
T
2
System error correction
Standard curve
Sensor curve
Temp.
[°C/°F]
.T
-This method is used to correct the
T
min
and T
max
1
and T2.
= End values
of the measuring range.
∆
T1 and ∆T2=Deviations
from Standard curve
at T
The transmitter
compensates for the
deviations and transforms
the Sensor curve to a
Standard curve
system error (sensor + transmitter error) by exposing the
sensor to one (one-point correction) or two (two-point correction) accurately measured temperatures (true temperatures).The true temperature(s) are entered, and the transmitter automatically corrects for the system errors. Fig. 3.
Fig.3
Two-point System error correction
Reading [mA]
20
12
4
∆out
2
True curve
(corrected)
T
2
System curve
(before correction)
max
.T
∆out
1
min
.T
1
T
Temp.
[°C/°F]
T
min
and T
max
of the measuring range.
∆
out1 and ∆out2= Deviations from True curve at
T
1
and T2.
The transmitter
compensates for the
deviations and transforms
the System curve to a
True curve
= End values
SmartSense - Sensor isolation monitoring
SmartSense continuously monitors the isolation resistance
of thermocouples and 3-wire connected RTDs as well as
the cabling between sensor and transmitter. The transmitter will react by forcing the output to a user defined level
if the isolation is too low. SmartSense requires an extra
lead inside the thermocouple or RTD. Fig. 4.
For detailed information, see section Theory and Facts.
Sensor break monitoring
IPAQ-4L monitors sensor break and forces the output signal to a user defined level, when any sensor lead is broken
or disconnected. The sensor break monitoring can be
switched off. The monitoring is furnished with a pulsed ex-
citation current. This eliminates the voltage drop in the
lead wires (giving a measuring error), caused by a standard DC excitation current.
Controlled output for instrument calibration
IPAQ-4L can be set to automatically provide a recurring
output signal of 0%, 50% and 100% of the selected output
signal regardless of the input value. The total time for the
controlled output is adjustable up to 30 minutes.
IPAQ-4L
Dampening
The dampening function can be used to dampen undesired instabilities on the input signal.The dampening time
is approximately 2 seconds. The dampening time is the
time required, in addition to the update time, for the output to reach 90% of its final value after a step change has
been applied to the input.
Power supply
IPAQ-4L is mains powered, i. e. a 4-wire transmitter. Two
versions of IPAQ -4L are available:
– Supply voltage 90-250 VAC / 110-220 VDC.
– Supply voltage 20-30 VDC.
DC supply accepts reversed polarity without damage.
Mounting
IPAQ-4L is designed to fit on a standard 35 mm rail
according to DIN EN 50022. The transmitter is also
equipped with extractable brackets for wall mounting.
Warranty
IPAQ-4L is covered by a 5 year limited warranty.
IPRO 4 - The user friendly software for all transmitters
of the IPAQ family
IPRO 4, which is used with all IPAQ-transmitters, is
the tool to utilize all the versatile functions of the
IPAQ-4L such as:
• Measurement configuration: Sensor type, range, sensor
or system error correction, linearization, engineering
units, output settings, filter activation, etc.
• Monitoring of sensor status: Sensor break and sensor
isolation (SmartSense).
• On-screen real time presentation of measured values and
output signal in the form of numericals, meters, bar
graphs and line recorder.
• Transmitter calibration: Field calibration in one or two
points and basic calibration.
• Documentation: Configuration files can be saved for fu-
ture use and configuration protocols can easily be
printed.
The communication with the transmitter can be performed
on line, i.e. with transmitter in operation. An isolated and
Ex-approved communication cable is included in the software kit, IPRO-X.
IPRO 4 is compatible with Windows 3.1, Windows 3.11,
Windows 95 and Windows NT Workstation 4.0. The program is menu-driven and easy to learn. On-line help is an
effective tool for the user.
IPAQ-4L Configuration scheme
RTD
Pt100 (IEC751, α=0.00385)
Pt1000 (IEC751, α=0.00385)
Input
PtX 10 ≤ X ≤ 1000 (IEC751,
Ni100 (DIN 43760)
Ni1000 (DIN 43760)
D100 (Pt 100 acc.
Linearity
Connections
and additional
functions
α=0.00385)
to JIS1604, α=0.003916)
Temperature linear
Resistance linear
3-wire connection
4-wire connection
3-wire connection
+ SmartSense (Pt100/D100)
Diff temperature (Pt100)
Sensor break protection
Sensor error correction
System error correction
Thermocouple
type AE
W5%Rh-W26%Rh
type B
Pt30%Rh - Pt6%Rh
type E NiCr-CuNi
type J Fe-CuNi
type K NiCr-Ni
type L Fe-CuNi
type N NiCrSi-NiSi
type R Pt13%Rh-Pt
type S Pt10%Rh-Pt
type T Cu-CuNi
type U Cu-CuNi
Customer specific
Temperature linear
Voltage linear
Customized linearization
Cold junction
compensation (CJC)
No CJC
CJC + SmartSense
Sensor break protection
Sensor error correction
System error correction
Resistance
Span:
10 Ω to 8000 Ω
Resistance linear
Customized
linearization
3-wire connection
4-wire connection
Engineering unit
Sensor break protection
Min/max correction
Voltage / Current
Span:
2 mV to 500 mV
0.25 V to 50 V
0.4 mA to 50 mA
Voltage linear
Customized
linearization
Engineering unit
Min/max correction
Dampening
Output
0/4 - 20 mA 20 - 4/0 mA
Current
Special
Dampening time ~2 s
Voltage
0/1 - 5 V 0/2 - 10 V 5 - 1/0 V 10 - 2/0 V
Special
IPAQ-4L
Specifications
Input
RTD’s and Resistance
Pt100 (IEC751,
Pt1000
PtX 10 ≤ X ≤ 1000 (IEC751,
Ni100 (DIN 43760) 3-, 4-wire connection -60 to +250 °C / -76 to +482 °F
Ni1000 (DIN 43760) 3-, 4-wire connection -60 to +150 °C / -76 to +302 °F
D100 (Pt 100 acc.to JIS1604,
Potentiometer/resistance 3-, 4-wire connection 0 to 8000 Ω
Sensor current R ≤ 2000 Ω ~ 0.4 mA
Maximum sensor wire resistance 25 Ω/wire
Thermocouples, Voltage and Current
T/C Type: AE, B, E, J, K, L, N, R, S, T, U Ranges according to users manual
Voltage Millivolt -10 to + 500 mV
Current -1 to + 50 mA
Input impedance T/C, Voltage >1 MΩ
Maximum sensor wire resistance T/C, Voltage 500 Ω (total loop)
Monitoring
Sensor break monitoring User definable output 0 to 23 mA or 0 to 11 V
SmartSense, sensor isolation monitoring User definable output 0 to 23 mA or 0 to 11 V
Adjustments
Zero adjustment All inputs Any value within range limits
Minimum spans Pt100, Pt1000, Ni100, Ni1000 10 °C / 18 °F
Output
Straight,reversed or any intermediate value Current 0/4-20 or 20-4/0 mA
Resolution Current 6 µA
Limitation Current ~24 mA
Permissible load Current ≤750 Ω
Temperature
Ambient, storage -20 to +70 °C / -4 to +158 °F
Ambient, operation -20 to +70 °C / -4 to +158 °F
General data
Selectable damping time ~ 2 s
Update time ~ 0.8 s
Isolation In - Out - Power supply 4000 VAC, 1 min
Humidity (non-condensing) 0 to 95% RH
Power supply
Supply voltage Part No. 70IP4L0001 90 to 250 VAC / 110 to 220 VDC
Permissible ripple 4 V p-p @ 50/60 Hz (DC version)
Power consumption <1.5 W
α =
(IEC751,
0.00385) 3-, 4-wire connection -200 to +1000 °C / -328 to +1832 °F
α =
0.00385) 3-, 4-wire connection -200 to +200 °C/ -328 to +392 °F
α =
0.00385) 3-, 4-wire connection Upper range depending on X-value
α =
0.003916)
3-, 4-wire connection -200 to +1000 °C / -328 to +1832 °F
R > 2000 Ω ~ 0.1 mA
Volt -10 to + 50 V
Current <25 Ω
Potentiometer 10 Ω for R ≤2000 Ω, 100 Ω for R >2000 Ω
T/C, Millivolt 2 mV
Volt 0,25 V
Current 0.4 mA
Voltage 0/2-10 or 10-2/0 V
Voltage 3 mV
Voltage ~12 V
Voltage ≥10 kΩ
Part No. 70IP4L0002 20 to 30 VDC
Accuracy
Linearity RTD, Potentiometer, mV, V, mA ±0.1 %
T/C ±0.2 %
Calibration RTD Max. of ±0.2 °C / ±0.4 °F or ±0.1 %
Potentiometer R ≤2000 Ω Max. of ±0.1 Ω or ±0.1 %
R >2000 Ω Max. of ±1.0 Ω or ±0.5 %
mV, T/C Max. of ±20 µV or ±0.1 %
V Max. of ±2 mV or ±0.1 %
mA Max. of ±4 µA or ±0.1 %
Cold Junction Compensation (CJC) T/C ±0.5 °C / ±0.9 °F
Temperature influence
4)
Temperature influence CJC
4)
All inputs Max. of ±0.25 °C/25 °C or ±0.25%/25 °C
T/C ±0.5 °C/25 °C / ±1.0 °F/50 °F
Instrument calibration output mA / V ±8 µA / ±5 mV
Sensor wire resistance influence RTD, Potentiometer, 3-wire Negligible
RTD, Potentiometer, 4-wire Negligible
mV, V, T/C, mA Negligible
Load influence Negligible
Power supply influence Negligible
RFI influence, 0.15-1000 MHz, 10 V or V/m
Long-term stability ±0.1 %
1)
1)
1)
1)
1)
1)
1)
Max. of ±0.5 °F/50 °F or ±0.28%/50 °F
2)
1)
±0.2%
(typical)
1)
/year
Housing
Material / Flammability (UL) PC + ABS/VO
Mounting
Connection Single/stranded wires ≤2.5 mm2, AWG 14
Weight 125 g
Protection, housing / terminals IP 40 / IP 00
1)
Of input span
2)
With equal wire resistance
3)
If zero-deflection > 100% of input span:
add 0.125% of input span/25 °C or 0.14%
of input span/50 °F per 100% zero-deflection
4)
Reference temperature 23 °C/73 °F
The User Instructions must be read prior to adjustment and/or installation.
Rail acc. to DIN EN 50022, 35 mm, and wall (brackets)
IPAQ-4L
1)
1) 3)
1) 3)
IPAQ-4L
INPUTS
Pt100, Pt1000, Ni100, Ni1000, PtX, D100
4-wire connection
3-wire connection
RTD
Pt100, D100
3-wire connection Diff temperature T
Pt100
1>T2
Potentiometer
4-wire connection 3-wire connection
Current
mA
- +
Thermocouple
AE,B,E,J,K,L,N,R,S,T,U
or customer specific
- +
*SmartSense lead
OUTPUT
Voltage
Volt
Current
mA
Power supply
*SmartSense lead
Millivolt
- +
35/
1.38
99/3.90
mm/inches
T
2
T
1
Voltage
Volt
- +
Dimensions
Extractable wall mounting bracket
82/
3.23
22.5/
0.89
90/
80/
3.54
3.15
PC
connection
+ - + -
SmartSense
Fig.4
*
Pt100
*
SmartSense lead
T/C
(+) (-)
Ordering table
Item Part No.
Transmitter
*
IPAQ-4L, Power Supply 90-250 VAC /
110-220 VDC 70IP4L0001
IPAQ-4L, Power Supply 20-30 VDC 70IP4L0002
Options
Configuration 70CAL00001
Configuration with 5-point
calibration certificate 70CAL00051
Software and cable
IPRO-X (IPRO with cable) 70IPRX0001
Software IPRO upgrade 70IPRS0001
Loading...