Ultrasonic Level Meters

ULM-53_-02-_

Measuring range from 0.25 m to 2 m, plastic PVDF transmitter and plastic body (PP+HDPE), process connection with thread G 1".

ULM-53_-06-_

Measuring range from 0.25 m to 6 m, plastic PVDF transmitter and plastic body (PP+HDPE), process connection with thread G 1 1/2".

ULM-53_-10-_

Measuring range from 0.5 m to 10 m, plastic PVDF transmitter and plastic body (PP+HDPE), aluminium alloy ("Xi" version) or HDPE ("N" version) ange.

ULM-53_-20-_

Measuring range from 0.5 m to 20 m, with plastic PVDF transmitter and plastic body (PP+HDPE), aluminium alloy ange.

Measuring range ¹⁾

ULM-53-02-
ULM-53-06-
ULM-53-10-
ULM-53-20-

0.25 ... 2 m
0.25 ... 6 m
0.5 ... 10 m
0.5 ... 20 m

Current supply

ULM-53-U

12 mA

Supply voltage

ULM-53N-
ULM-53Xi-I

18 ... 36 V DC
18 ... 30 V DC

Current output ULM-53-I
Voltage output ULM-53N-U

4 ... 20 mA (limit values 3.9 ... 20.5 mA)
0 ... 10 V (limit values 0 ... 10.2 V)

Resolution

< 1 mm

Accuracy (within the total range)

ULM-53-06- ; 10- ; 20-
ULM-53-02-

0.2 %
0.3 %

Temperature error

max. 0.04% / K

Beamwidth (-3 dB)

ULM-53-02- ; 10-
ULM-53-06-
ULM-53-20-

10^o
14^o
12^o

Ambient temperature range

ULM-53-02- ; 06-
ULM-53-10- ; 20-

-30 ... +70^oC
-30 ... +60^oC

Measuring period

ULM-53-02-
ULM-53-06-
ULM-53-10-
ULM-53-20-

0.6 s
1.4 s
1.8 s
5.0 s

Averaging (can be modied according to agreement)

4 samples

Short time temperature stress resistance

+90^oC / 1 hour

Max. operation overpressure (on transmission surface)

0.1 MPa

Max. internal values 2) (for the Xi version only)

Ui=30 V DC; Ii=132 mA; Pi=0.99 W; Ci=370 nF; Li=0.9 mH

Failure indication

echo failure - basic mode
echo failure - inverse mode
level in dead zone - basic mode
level in dead zone - inverse mode

3.75 mA (0 V)
22 mA (10.5 V)
22 mA (10.5 V)
3.75 mA (0 V)

Protection class

IP67

Recommended cable

PVC 2 x 0.75 mm2 (3 x 0.5 mm2)

Current output load resistance (at U = 24 V DC)

Rmax = 270

Voltage output load resistance

R > 1 k

Delay between supply power rise time and rst measurement

ULM-53-02- ; 06- ; 10-
ULM-53-20-

3s
5s

Delay between power supply rise time and full emission output

ULM-53-02- ; 06- ; 10-
ULM-53-20-

30 s
45 s

Weight

ULM-53-02-
ULM-53-06-
ULM-53-10-
ULM-53-20-

0.20 kg
0.25 kg
0.65 kg
2.80 kg