Description
The Spirax Sarco UTM20 ultrasonic transit time flowmeter measures volumetric flow and heating/cooling energy rates in clean liquids as well as those with small amounts of suspended solids or aeration, such as surface water or raw sewage.
UTM20 flow and energy meters clamp onto the outside of pipes and do not make contact with the liquid inside the pipe
Benefits
By clamping onto the outside of pipes, the meters have inherent advantages over other flow meter technologies, including:
- Reduced installation time and cost
- Non-invasive, non-contact measurement
- Continued operation during installation – no need to shut down the process
- No pressure head loss
- No moving parts to maintain or replace
Features
- Large, bi-directional flow measuring range
- Data log up to 8 records
- Modbus® RTU or BACnet® MS/TP over EIA-485; Modbus TCP/IP; BACnet/IP
- Configure and troubleshoot over USB with SoloCUE software
- Reynolds number, ultrasonic speed and temperature compensation
- Large, easy-to-read graphical display
- Rugged, aluminum enclosure for a long service life in harsh environments
Applications
The UTM20 meter is available in a variety of configurations that permit the user to select a meter with features suitable to meet particular application requirements.
The UTM20 meter is available in two versions:
- A volumetric flow meter for water, sewage, cooling water, water-glycol mixtures, alcohols and chemicals.
- A heating/cooling energy flow meter used in conjunction with dual clamp-on RTDs for temperature measurement; ideal for hydronic process and HVAC applications.
Operation
Transit time flow meters measure the time difference between the travel time of an ultrasound wave going with the fluid flow and against the fluid flow.
The time difference is used to calculate the velocity of the fluid traveling in a closed-pipe system.
The transducers used in transit time measurements operate alternately as transmitters and receivers.
Transit time measurements are bi-directional and are most effective for fluids that have low concentrations of suspended solids and are sonically conductive.
An ultrasonic meter equipped with heat flow capabilities measures the rate and quantity of heat delivered or removed from devices such as heat exchangers.
By measuring the volumetric flow rate of the heat exchanger liquid, the temperature at the inlet pipe and the temperature at the outlet pipe, the energy usage can be calculated.
Technical specifications (System)
Liquid Types | Most clean liquids or liquids containing small amounts of suspended solids or gas bubbles | |
Flow Accuracy | Medium and Large Pipes (RZ, NZ, WZ, HZ, LZ, YZ, JZ, KZ) | ± 0 5% ± 0 0 049 ft/s (0 015 m/s) |
Small Pipes (CA-CT, UZ) | 1 in (25 mm) and larger = ±1% ± 0 03 ft/s (0 009 m/s) 3/4 in (20 mm) and smaller = ±1% of full scale | |
Repeatability | 0 2% above 1 5 ft/s | |
Velocity | Medium and Large Pipes | Up to 40 ft/s, depending on pipe and fluid |
Small Pipes | Up to 20 ft/s, depending on pipe and fluid | |
Straight Run Requirements | 10 diameters upstream, 5 diameters downstream from single elbow | |
Certification and Compliance | General Safety (all models): cCSAus, CE, Pollution Degree 2, CE compliance to Low Voltage Directive, 2014/35/EU U.S./Canada Hazardous Location transmitter and transducers: Transmitter and transducers (certification option B): cCSAus Class I Division 2 Groups ABCD T4 Volumetric Flow Meter Only (not available for Energy Meter) Transmitter (certification option R): Transducers LZ, NZ, RZ, WZ and YZ (certification option R): |
Technical specifications (Transmitter)
Power Options | 24 Vdc/AC | 9…28 Vdc @ 8 W max or 20…26 AC 47…63 Hz @ 0 5 A max , 2 Amp slow-blow fuse, not field replaceable |
Mains AC | 85…264 Vac 47…63 Hz @ 24VA max 1 Amp slow-blow fuse, manually field replaceable | |
Over-Voltage Rating Category II (CAT II) | ||
Display | Options | Display with keypad or no display/keypad |
Keypad | 4-button navigation, keypad with tactile feedback; polyester film | |
Display | 128 × 64 pixel LED backlit graphical display; adjustable brightness and timeout; polycarbonate window | |
Flow rate/total | 8-digit | |
Enclosure | NEMA Type 4X, IP67 | |
Construction | Aluminum construction; painted; wall, panel or pipe mounting; stainless steel fasteners and mounting hardware; EPDM gasket | |
Conduit Holes | (4) 1/2 in NPT, M20 × 1 5 or 1/2 BSPP; cable glands available for NPT and M20 | |
Environmental Ratings | Pollution Degree | 2 |
Altitude Restriction | Up to 2000 m (6561 ft) | |
Ambient Temperature Range | -4…140°F (-20…60°C) | |
Storage Temperature Range | -40…176°F (-40…80°C) | |
Humidity | 0…85%, non-condensing | |
Configuration | Via optional keypad or SoloCUE configuration software; SoloCUE available on DVD or download | |
Units (FieldSelectable) | Velocity | feet/second, meters/second |
Volumetric total | US Gallons, Million Gallons, Imperial Gallons, Million Imperial Gallons, Acre-Feet, Liters, Hectoliters, Cubic Meters, Cubic Feet, Oil Barrels (42 gallons), Fluid Barrels (31 5 gallons), Imperial Fluid Barrels (36 imperial gallons), Pounds (Kilograms) and custom units | |
Flow rate | Acre Feet/Day, Liters/Second, Liters/Minute, Liters/Hour, Cubic Meters/Second, Cubic Meters/Minute, Cubic Meters/Hour, Cubic Feet/Minute, Cubic Feet/Minute, Cubic Feet/Hour, Gallons/Second, Gallons/Minute, Gallons/Hour, Million Gallons/Day, Imperial Gallons/Second, Imperial Gallons/Minute, Imperial Gallons/Hour, Million Imperial Gallons/Day, Oil Barrels/Day, Fluid Barrels/Day, Imperial Fluid Barrels/Day and custom units | |
Energy total (energy meters) | British Thermal Unit (Btu), Thousand Btu, Millions Btu, Kilocalories, Mega calories, Kilowatt-hour, Megawatt hour, Kilojoules, Mega joules, Ton-hour (Refrigeration) | |
Heat/cooling rate (energy meters) | Btu/hour, Thousand Btu/hour, Millions Btu/hour, Ton (Refrigeration), Watts, Kilowatts, Megawatts, Kilojoules/hour, Mega joules/hour, Kilocalories/hour, Mega calories/hour | |
Temperature (energy meters) | Farenheit, Celcius, Kelvin |
Flow Meter | Energy Meter | |||
Inputs and Outputs | 0/4…20 mA output | One 16-bit, isolated, max 800 Ohms, internal or external power | Two 16-bit, isolated, max 800 Ohms, internal or external power | |
Digital input | One 5…30 Vdc, isolated, externally or internally sourced, reset totalizer or alarm output | |||
Digital output | Two selectable pulse, alarm, flow direction, sink isolated open collector, 5…30 Vdc, max 50 mA externally or internally sourced, leakage current 1uA max | Three selectable pulse, frequency, alarm, flow direction, isolated open collector, 5…30 Vdc, externally or internally sourced, leakage current 1uA max | ||
Frequency output: 50% duty cycle, 63…10k Hz maximum frequency | ||||
Pulse (totalizer) output: 5 kHz max output, open collector, pulse width 5…500 ms programmable | ||||
Optional: Two dry contact output for alarm or flow direction 30 Vdc max , 5A max (Ethernet not available with this option) | ||||
RTD (energy only) | None | Two 2-wire, 3-wire or 4-wire Pt100/Pt1000 RTD 12-bit inputs; Range of -40…200°C; Clamp-on resistor kits available | ||
Ports | Programming | USB 2 0 mini B connector for connection to a device with SoloCUE configuration software | ||
EIA-485 | Modbus RTU command set or BACnet MS/TP; Baud rates 9600, 14400,19200, 38400, 57600, 76800, 115k; terminating resistor selectable | |||
Ethernet | Optional 10/100 Base T RJ45, communication via Modbus TCP/IP or BACnet/IP | |||
Data Logging | Number of points | Up to 8 parameters per record Selectable 1 second to 1 day Transfer logs via memory card | ||
Real Time Clock | Backed up with a super capacitor, minimum of 32 days of data retention without power; Requires no servicing | |||
MicroSD card slot | 8 GB card, included with transmitter | |||
Alarms | Records 150 previous alarms, warnings or errors | |||
Languages | English, French, German, Italian, Spanish | |||
Security | Four levels: Read-only, Operator, Service and Admin; 6-digit passcode number; selectable auto logout |
Technical specifications (Transducers)
Model | Construction | Cable Length Max. | Pipe/Tubing Sizes 1 | Flow Rate Max. GPM (LPM) | Pipe/Tubing Materials |
CA-CT ⁵ fixed small pipe | CPVC, Ultem®, Nylon cord grip, PVC cable jacket; -40…194°F | 100 ft | 0 5…2 in | 190 | See 2 |
UZ adjustable small pipe | CPVC, Ultem, and anodized aluminum track system; Nickel-plated brass connector with Teflon insulation; PVC cable jacket, -40…194°F (-40…90°C) | 100 ft (30 m) | 0 5…2 in (12…50 mm) | 190 (720) | |
NZ (IP67) standard pipe | PVC, Ultem®, Nylon cord grip, PVC cable jacket; -40…194°F (-40…90°C) | 300 ft (90 m) | 2 5…12 in (DN65…DN300) | 4000 (15,000) | |
RZ (IP54) standard pipe | PBT glass filled, Ultem®, Nylon cord grip; PVC cable jacket; -40…250°F (-40…121°C) | 300 ft (90 m) | 2 5…12 in (DN65…DN300) | 4000 (15,000) | |
JZ, KZ (IP54) standard pipe, integrated rail | PBT glass filled, Ultem, Nylon cord grip; PVC cable jacket; -40…250°F (-40…121°C) | 300 ft (90 m) | 2 5…6 in (DN65…DN150) 2 5…12 in (DN65…DN300) |
4000 (15,000) | |
WZ (IP68) standard pipe, submersible | CPVC, Ultem, Nylon cord grip; Polyethylene cable jacket; -40…194°F (-40…90°C) | 300 ft (90 m) | 2 5…12 in (DN65…DN300) | 4000 (15,000) | |
HZ high temperature | PTFE, Vespel, Nickel-plated brass cord grip; FEP cable jacket; -40… 350°F (-40…176°C) | 300 ft (90 m) | 2 5…12 in (DN65…DN300) | 4000 (15,000) | |
LZ (IP67) large pipe | CPVC, Ultem, Nylon cord grip PVC cable jacket; -40…194°F (-40…90°C) | 300 ft (90 m) | 8…48 in (DN200…DN1200) 3, 4 | 33,000 (125,000) | |
YZ (IP68) large pipe, submersible | CPVC, Ultem, Nylon cord grip; Polyethylene cable jacket; -40…194°F (-40…90°C) | 300 ft (90 m) | 8…48 in (DN200…DN1200) 3, 4 | 33,000 (125,000) |
1 Recommendations based on unlined, new pipes with water Recommended pipe or tubing sizes vary with pipe conditions and fluid
2 PVC, CPVC, HDPE, PTFE, PDVF, stainless steel, ductile iron, aluminum, brass naval, carbon steel copper
3 Large pipe transducers are recommended for 8…12 in pipes if normal velocity is expected to be greater than 12 ft/s (3 6 m/s)
4 Consult factory for larger pipe sizes
5 Not for metric pipes