Dwyer ULTM User Manual
Page 3
Chapter 1: Introduction
1. Description
Series ULTM is an ultrasonic level meter with integrated GSM cellular modem
and USB interface. Optional items include external temperature sensor and
programmable timer switch.
Series ULTM measures distance for targets such as liquid or solids.
Measurement is continuous and does not require contact with the target. The
system can accurately measure steady or agitated target surfaces. The system can
also rapidly track filling and emptying of vessels. The system measurement
distance spans 5.9 in (15 cm) to 26 ft (8 m). In addition to distance, the ULTM can
also measure temperature of the environment.
Series ULTM makes use of the measured distance to calculate additional
information such as target level and volume.
Series ULTM operates at an ultrasonic frequency of 75 kHz, making it perfect for
noisy conditions. The sensor is made of PVDF, therefore providing good chemical
resistance to corrosive targets.
Series ULTM may be used with 8 to 33 VDC power. The low power mode is
available for use with batteries and is supported using a Programmable Timer
Switch (PTS).
Series ULTM is equipped with a large graphic display and keypad allowing a
simple wizard-driven setup of the system. The keypad and display allow
configuration of many ULTM configuration parameters. Complete setup of all ULTM
parameters can be executed using a USB equipped PC or laptop. This method of
configuration allows for rapid cloning of multiple ULTM systems.
Series ULTM transmits measurement information to a predefined destination –
(either cellular phone or cellular PC modem) via SMS with user-programmable
reporting intervals. The system also identifies and sends an alert in boundary
events such as full and empty situations. The system can also be programmed to
identify or alert for rapid changes of level, indicating theft and refuel quantities. The
system can also transmit on/off contact state information.
This user manual is intended for users and operators of Series ULTM. The
manual covers system description, installation, operation and troubleshooting for
the Series ULTM.
SPECIFICATIONS
Measuring range
Maximum Range for Liquids: 26.25´ (8 m);
Maximum Range for Solids: 19.69´ (6 m).
Accuracy – Precision – Resolution -Tracking
Accuracy:
15 cm Repeatability: 0.2% of measured range. Electrical Specifications Continuous: Less than 10 mA; Data Interface: Serial COM over USB at 115,200 bps. 2 . Cellular Modem Specifications Reports Distance and percentage distance; Data Sent by SMS: Level, distance, volume, temperature, status. Temperature Characteristics Mechanical Specifications *To measure external temperature, contact factory for ULTM-EXT for external Page 2 Figure 1: Series ULTM Parts.
Display Resolution: 0.04˝ (1 mm).
SMS Resolution: 0.04˝ (1 mm).
Max Tracking Rate: 0.55 ft/sec (10 m/min).
Beam Angle: 5° @ 3 dB point.
Power Supply: 8 to 33 VDC on ULTM ports.
Low Power Mode: Programmable sleep mode.
Current Consumption @ 24 VDC:
During SMS transmission: Less than 40 mA;
Short spikes at switch and SMS: Less than 160 mA.
USB Port: Firmware upgrade.
Display: 64X128 graphic LCD, viewing size 50X25 mm
Band: Quad band 850/900/1800/1900 mHz.
Output Power: Class 4 (33dBm) for EGSM850/EGSM900.
Class 1 (30dBm) for GSM1800/GSM1900.
SMS: Point-to-point MO and MT.
GPRS: Multi-slot class 10.
Displayed: Level and percentage level;
Volume;
Temperature (internal and external);
Echo strength;
Global operating hours;
Resettable operating hours.
Alerts Sent by SMS: Full, empty, over consumption, refill, custom.
Operational Temperature Range: -4 to 158°F (-20°C to 70°C).
Temperature Sensors: Internal and optional external.
Temperature Compensation: Built-in based on internal sensor, external sensor or
average of the two.
Temperature Display: Internal and external temperature; Instantaneous and
recorded high/low.
Enclosure Material: Plastic PC/ABS+UV.
Sensor Material: PVDF.
Sealing Rating: IP65/IP67; IP68 - 96 hours at 5.91´ (1.8 m) depth in water.
Mounting Orientation: Vertical.
Mounting Threads: 1.5˝ BSP or 1.5˝ NPT.
Cable Entries: Conduit 1/2˝ NPT.
Weight: 1.95 lb (884.51 g).
temperature sensor.