ONICON System-10 BTU - Manual (Page 6)

11451 Belcher Road South, Largo, FL 33773 • USA • Tel +1 (727) 447-6140 • Fax (727) 442-5699 • [email protected]
System-10 BTU Meter Manual 03/15 - 0651-16 / 18323 Page 6
GENERAL SPECIFICATIONS
CALIBRATION
Flow meter and temperature sensors are individually
calibrated, followed by a complete system calibration.
Field commissioning is also available.
ACCURACY
Differential temperature accuracy ±0.15° F over
calibrated
range
Computing non-linearity within ±0.05%
Analog outputs: ±0.1% of full scale
TEMPERATURE SENSORS
Solid-state sensors are custom calibrated using N.I.S.T.
traceable temperature standards.
Current based signal (mA) is unaffected by wire length.
PROGRAMMING
Factory programmed for specific application.
MEMORY
Nonvolatile EEPROM memory retains all program
parameters and totalized values in the event of
power
loss.
DISPLAY
Alphanumeric LCD displays total energy, total flow,
energy rate, flow rate, supply temperature, return
temperature. serial number and alarm status
Alpha: 16 character, 0.2” high
Numeric: 6 digit, 0.4” high
Rate Display Range: 0 - 9,999,999
Total Display Range: 0 - 9,999,999
The totals will roll over to zero when the maximum
count
is exceeded.
OUTPUT SIGNALS
Standard: Isolated solid-state dry contacts for energy total
Maximum contact ratings: 100 mA, 50 VDC
Contact duration: 0.5, 1, 2 or 6 seconds
(factory
selectable)
Optional: Multiple isolated analog outputs for energy rate,
flow rate, supply and return temperature and delta
temperature (factory selectable)
Output type: 4-20 mA, 0-10 V or 0-5 V
(field
selectable)
Optional Interval Data Logging: This option
provides up to 24 hours of rate and total data
logging in 15 minute intervals. Data includes
date/time stamp, measured value & scaling
factors when appropriate.
Network Interface Options:
MODBUS RTU RS485
MODBUS RTU TCP/IP
BACnet
MS/TP
BACnet UDP/IP
LONworks FTT10A
JCI Metasys - N2
Siemens Apogee - P1 FLN
LIQUID FLOW SIGNAL INPUT
Standard: 0-15 V pulse output from any ONICON flow meter
Optional: 4 - 20 mA analog output from any flow meter
TEMPERATURE RANGE
Liquid temperature range: 25° to 200°F
Ambient temperature range: -20° to 140° F
MAINTENANCE
ONICON recommends periodic inspection and recalibration
for sensors connected to the System-10 BTU Meter. No
other periodic maintenance is required for the main unit.
MECHANICAL
ELECTRONICS ENCLOSURE:
Standard: Steel NEMA 13, wall mount, 8”x10”x 4”
TEMPERATURE THERMOWELLS:
Standard: ½” NPT brass thermowells (length varies with
pipe size) with junction box
Note: 6” pipes and larger require SS thermowell option
Optional:
• ½” NPT stainless steel thermowells
• Outdoor junction box with thermal isolation
• Hot tap thermowells for installations in a
pressurized system with no shutdown
ELECTRICAL
This equipment is intended for INSTALLATION CATEGORY
(OVERVOLTAGE CATEGORY) II applications.
INPUT POWER:
Factory
Selectable:
24 VAC: 20 - 28V, 50/60 Hz, 500 mA
120 VAC: 108 - 132V, 50/60 Hz, 250 mA
240 VAC: 207 - 253V, 50 Hz, 250 mA
INTERNAL FUSE RATING:
24 VAC - 1 Amp Slo-Blo, 3AG Fuse
120 VAC - 1/4 Amp Slo-Blo, 3AG Fuse
240 VAC - 1/8 Amp Slo-Blo, 3AG Fuse
OUTPUT:
24 VDC, 250 mA maximum
OVERCURRENT PROTECTIVE DEVICE RATINGS:
Supply mains overcurrent protective devices with the
following
ratings:
120 VAC 50/60 Hz – 15 A
240 VAC 50 Hz – 6 A
WIRING:
Temperature signals: Use 18-22 ga twisted shielded pair
Flow signals: Use 18-22 ga shielded cable – see flow
meter specification sheet or flow meter manual for
the correct number of conductors.
24 VAC input power: Use PVC jacketed copper cable
with a wire gauge suitable for the length of run and
required maximum current carrying capacity. The
installation must comply with all local, state and
federal
building codes.
120/240 VAC input power: Use a three wire service with one
wire a protective earth ground. The installation must
comply with all local, state and federal building codes.
Note: Specifications are subject to change without notice.
!
WARNING
All electrical connections must be made in
accordance with the imformation provided
here. Failure to do so will result in an
increased risk of injury.