ST-H Ultrasonic Level Transducer
ST-H transducers use ultrasonic technology to measure level in
chemical storage and liquid tanks.
Part Numbers & Accessories
| Part Number | Description |
|---|
| 7ML1830-1AQ | EASY AIMER II, ALUMINIUM, 3/4 INCH NPT WITH 3/4 - 1 INCH PVC
COUPLING |
| 7ML1830-1AU | EASY AIMER II, 304, FLANGE WITH NPT THREAD, W/CPLNG, 1 INCH |
| 7ML1830-1AX | Easy Aimer II Flange, Aluminium with M20 Adapter, 1" and 1-1/2" BSP
aluminium coupling |
| 7ML1830-1BK | UNIVERSAL BOX BRACKET, FMS-200 |
| 7ML1830-1BT | Universal Mounting Adapter, 2 inch NPT |
| 7ML1830-1BU | Universal Mounting Adapter, 2 inch BSP |
| 7ML1830-1EF | ADAPTER 1"NPT/M20 |
| 7ML1830-1GN | Easy Aimer adapter Kit, 304, M20 to 1"NPT, 1"NPT to 1"BSP, 1"NPT to
1.5"BSP |
| 7ML1930-1FX | KIT, ISOLATION, 1" NPT, XDUCERS |
Key Benefits
- Can be mounted on a narrow standpipe
- Immune to corrosive and harsh environments
- Integral temperature sensor
Application Details
The narrow design of the ST-H allows the transducer to be mounted
on a narrow standpipe. When mounted correctly, it is completely
protected from the process and can even be used in harsh, corrosive
environments.
During operation, the ultrasonic transducer emits acoustic pulses
in a narrow beam perpendicular to the transducer face. The level
transceiver measures the propagation time between pulse emission
and reception of the echo to calculate the distance from the
transducer to the material. Variations in sound velocity due to
changes in temperature within the permissible range are
automatically compensated by the integral temperature sensor.
Key Applications:
Chemical storage, liquid tanks
Technical Specifications
Mode of operation
Ultrasonic transducer
Measuring principle
Ultrasonic transducer
Measuring range
0.3 ... 10 m (1 ... 33 ft)
Frequency
44 kHz
Beam angle
12°
Temperature compensation
Compensated by integral temperature sensor
Pressure
Normal atmospheric pressure
Ambient temperature
-20 ... +60 °C (-5 ... +140 °F) (ATEX and UKEX approved model)
-40 ... +73 °C (-40 ... +163 °F) (CSA/FM approved model)
Storage temperature
-20 ... +60 °C (-5 ... +140 °F)
Weight
1.4 kg (3 lb)
Material (enclosure)
Base and lid made of ETFE or PVDF (epoxy fitted joint)
Process connection
2" NPT [(Taper), ASME B1.20.1], R 2" [(BSPT), EN 10226] or G 2"
[(BSPP), EN ISO 228-1]
Degree of protection
IP68
Cable connection
2-core shielded/twisted, 0.519 mm² (20 AWG), PVC sheath
Cable (max. length)
365 m (1 200 ft) with RG 62 A/U coaxial cable
Flange adapter
3" Universal (fits DN 65, PN 10 and 3" ASME)
Certificates and Approvals
CE, UKCA, RCM, KC, CSA Class I, II, III, Div. 1, Groups A, B, C, D,
E, F, G T3 (ETFE only); FM Class I, II, Div. 1, Groups C, D, E, F,
G T4A; ATEX II 2G Ex mb IIC T5 Gb; UKEX II 2G Ex mb IIC T5 Gb;
INMETRO Ex mb IIC T5 Gb VLAREM II RoHS, China RoHS, WEEE, REACH,
NSF/ANSI/CAN 61- 2022 FDA (wetted sensor) Environmental Product
Declaration (EPD) Kazakhstan Metrology
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