2 Specifications ar
e subject to change without notice UDM40 DS ENG 261110
UDM40
Analogue inputs Channels and variable
BQ LSX module 1, mA and V DC/AC
BQ LSE/LSF module 1, mA and V DC/AC + AUX
BQ HSX module
1,
A and V DC/AC
BQ TRX module 1, temperature
BQ TRX module 1, resistance
BQTF1 module 2, frequency
B
QTF2 module 2, frequency
Digital inputs
Incl. in the measuring module
Number of inputs 1 (voltage-free)
Use key-pad lock
Display hold
Reset of latch alarms
Contact reading signal
BQ xxx: <0.1mA, <3,5V DC
BQ LSE/BQ LSF: <2.5mA,
<14V DC
BQTF1: <6mA, <7VDC
BQTF2: <0.25mA, <3VDC
Close contact resistance Max 1kΩ
Open contact resistance Min 500kΩ(BQTFx: 100kΩ)
Insulation Non-insulated
Accuracy
(display, RS485) See table “Measuring
accuracy”, temperature drifts
and minimum-maximum
indications”
Additional errors
Humidity
0.3%
RDG (BQTFx: 0.05%)
,
60%
to
90% R.H.
Input frequency 0.4% RDG, 62
to
440 Hz
Magnetic field 0.5% RDG (BQTFx: 0.05%)
@ 400 A/m
Temperature drift
See table “Measurement
accuracy, temperature drifts,
and max/min indications”
Sampling rate 500 samples/s @ 50 Hz
(escl. BQTFx)
Display r
efresh time
200 msec @ 50Hz
(escl. BQTFx)
Display 4 DGT,
7 segments
height 14.2 mm
Colour Selectable (red, amber,
green)
Max and min indication
See table “Measurement
accuracy, temperature drifts
and max min indications”
Measurements Current, voltage, tempera-
ture, resistance and frequen-
cy
. For the current and volt-
age measurements: TRMS
measurement of distorted
sine waves.
Coupling type Direct
Crest factor ≤3; A
P
max
=1.7In; V
P
max
=1.7Un
Input impedance See table “input
impedances and overloads”
Frequency 40 to 440 Hz
Overload See table “input
impedances and overloads”
Compensation Only temperature
measurement module.
RTD - For Pt 100-250-500-1000,
3-wire connection: up to 10Ω
- For resistance measur. with
20Ω
range: up to max 0.1Ω
- For resistance measurements
with ≥ 200Ω range: up to max 10Ω
TC Internal cold junction, within
temperature range from
0 to +50°C.
Automatic or manual com-
pensation fr
om 0 to 50°C.
Input specifications
Measurement accuracy, temp. drifts, max and min indications
All accuracies and min/max indications are r
eferred to an ambient temp. range of 25
°C ±5°C, rel. humidity
≤60% and scale ratio (electri-
cal/displayed scale) equal to 1. The conversion into °F is obtained acting on the electrical/displayed scale ratio.
* <45Hz >65Hz= ±
(0.5%RDG+3DGT) 0% to 25% FS;
±(0.5%RDG+2DGT) 25% to 110% FS.
(<) The min. indication for TRMS measurement (AC or DC) is 0; it is possible to modify the decimal point position.
Module Inputs T
ype
Accuracy T
emp. drift
Min. indication (<) Max. indicat.
(
<)
BQ LSX/
BQ LSE/
BQ LSF
-200
µ
A to +200
µ
A
-2mA to +2mA
-20mA to +20mA
-200mV to +200mV
-2V to +2V
-20V to +20V
DC/AC
DC: ±(0.1%RDG+3DGT)
0% to 25% FS;
±
(0.1%RDG+2DGT)
25%
to
110% FS.
TRMS (da 45 a 65Hz)
*:
±(0.3%RDG+3DGT)
0% to 25% FS;
±
(0.3%RDG+2DGT)
25%
to
110% FS.
±
150 ppm/
°
C
- 200.0
- 2.000
- 20.00
- 200.0
- 2.000
- 20.00
+ 200.0
+ 2.000
+ 20.00
+ 200.0
+ 2.000
+ 20.00
(17 pages)
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