BTU Monitor
Series 3050
DESCRIPTION
The Badger Meter® Series 3050 BTU monitor is an economical,
full-featured, compact unit designed for HVAC sub-metering
applications, and general hydronic thermal transfer systems.
Outputs include one mechanical relay and one solid-state
pulse output, both featuring unit/pulse and setpoint control
independently based on flow or energy rate/total, supply return,
or delta temperature readings. Also driven by the same variables,
an optional analog 4…20 mA or 0…20 mA output is provided.
Additionally, the optional USB, RS-485 Modbus, and BACnet/MSTP
provide high-level communication.
A two-line by 16-character 3/8 in. (9.5 mm) high backlit LCD
display is configured by the user to display flow rate, flow total,
energy rate, energy total, supply and return temperatures or
delta T. In addition to many pre-programmed units of measure,
many custom units can be created during field setup.
The two required temperature inputs can be standard
Badger Meter two wire 10k thermistors, or three wire 100 Ω
platinum RTDs. A unique programming feature permits custom
RTD or thermistors to be accommodated.
The flow sensor input features flexible scaling options and signal
type selections that permit the use of most Badger Meter sensors,
or other frequency sine/pulse or linear analog devices.
OPTIONS
NEMA 4X panel mount conforms to DIN standard 96 mm x 96 mm
for meter size and cutouts. NEMA 4X wall mount is available as
an option.
Advanced features include:
• Infinite Impulse Response Filter (IIRF) smoothes the flow rate,
temperature, and energy rate calculations. This proprietary
smoothing software provides accurate energy calculations
by compensating for a wide variety of flow and temperature
signal variables.
• Temperature sensor zeroing effectively makes any two similar
sensors a matched pair at the actual operating temperature.
• Password restricted access to programming, reset total,
or both.
• Non-volatile memory of totals and field configuration, without
need for battery backup.
• Efficient switching power supply permits 12…24V AC/DC
operations.
PROGRAMMING
Programming is very easy and can be done using the five front
panel push buttons, or optionally by using Windows® based
software via a USB port.
PART NUMBER CONFIGURATION
Series
Flow Monitor 3050
Option - Analog Output, RS485 (BACnet / Modbus), and USB
No Option 0
Analog Output, RS485 with BACnet and Modbus, and USB 1
Option - Mounting
Panel Mount 0
Wall Mount 1
Example: 3050 - x x
DIMENSIONS
96 mm
3.49 in.
88.7 mm
TOP
3.54 in.
90 mm
MOUNTING TEMPLATE
122 mm
5
4.33 in.
110 mm
4.80 in.
3.78 in.
96 mm
2.21 in.
56 mm
1/8 in.
3.2 mm
82 mm
SIDE
3.57…3.60 in.
90.6…91.4 mm
PANEL
CUT OUT
3.62 in.
92 mm
3.49 in.
88.7 mm
3.57…3.60 in.
90.6…91.4 mm
DSY-DS-01684-EN-05 (February 2016)
5
4.72 in.
120 mm
SIDE
Product Data Sheet
BTU Monitor, Series 3050
FLOW SENSOR INPUTS
Type Threshold Signal Input Frequency Pull-up Impedance Aux. Power Calibration
Pulse-DI 2.5V DC 30V DC 0.4 Hz…10 kHz 1K…12V DC — 12V DC @30mA K + Offset
Pulse K-factor 2.5V DC 30V DC 0.4 Hz…10 kHz — — 12V DC @30mA Pulse/Gal
Pull-up K-factor 2.5V DC 30V DC 0.4 Hz…10 kHz 1K…12V DC — 12V DC @30mA Pulse/Gal
Analog 4…20mA 10mVPP 50 mA Fused — — 100 Ω 12V DC @30mA Linear
Analog 0…20mA — 50 mA Fused — — 100 Ω 12V DC @30mA Linear
Analog 0…1V DC — 30V DC — — 100 Ω 12V DC @30mA Linear
Analog 0…5V DC — 30V DC — — 100 Ω 12V DC @30mA Linear
Analog 0…10V DC — 30V DC — — 100 Ω 12V DC @30mA Linear
SPECIFICATIONS
Voltage 12…24V DC/AC (limit: 8…35V DC); (limit: 8…28V AC)
Operating Temperature –4…158° F (–20…70° C)
Storage Temperature –22…176° F (–30…80° C)
Weight Panel Mount: 12 oz
Pulse and Relays Both pulse and relay are fully functional as either totalizing or setpoint outputs
Pulse Electrical 1 Amp at 35V DC/30V AC Closed: 0.5 Ω at 1 Amp; Open: >10
Relay Electrical
Pulse/Unit Volume
(Totalizer)
Resistive Load:
5A @ 120V AC/30V DC
Driving Source: flow total,
Btu total
Inductive Load:
1A @ 120V AC/30V DC
Rate: 1 pulse per 1.0000000…99999999 units Contact Time: 1…9999 mS
8
Ω
Driving Source: flow rate, Btu
Setpoint (Alarm)
rate, temperature 1, temperature
2, delta T
Units: Any predefined or custom unit Setpoint: 1.0000000…999999999
Delay to Set: 1…9999 sec Release Point: 1.0000000…999999999 Delay to Release: 1…9999 sec
Optional Analog Output
Driving Source: flow rate, Btu rate,
temperature 1, temperature 2,
delta T, PID control
Range: 4…20 mA; 0…20 mA (isolated current
sinking or sourcing)
USB Communication Provides complete access to all programming and operation features
RS-485 Communication Supports Modbus and BACnet/MSTP
Accessories Programming kit; wall mount kit
Two of 2-wire 10k type II thermistor; 25…170° F (–3.9…76.7° C) or custom field-defined
3-wire platinum 100Ω RTD; 25…250° F (–3.9…121.1° C) or custom field-defined
Energy Rate Units: kBtu/hr; Btu/min; kW; Tons;
J/Sec; and field programmed custom units
Temperature Inputs
Unis of Measure: °F and °C
Zeroing: Compensate for
variances between temperature
elements by adjusting T2 reading
Constant: Single point correction for variances
in specific heat of transfer liquid.
to match T1 reading.
US gpm; US gal/sec; gal/hr; US mgal/day; lps; lpm; lph; ft3/Sec; ft3/min; ft3/hr; m3/sec;
Units of Measure
Rate
m3/min; m3/hr; acre-ft/sec; acre-ft/min; acre-ft/hr; bbl/sec; bbl/min; bbl/hr; and field
programmed custom units 0.00…999999999
Total US mgal; liters; ft3; m3; acre-ft; bbl; and field programmed custom units 0.00…999999999
DC current draw (~ 280 mA)
AC Power rating (~5 VA)
Sinking: 30V DC @ 0 mA max.;
3V @ 20 mA min.
Sourcing: 600 W max load
Requirements: USB 2.0 A to Mini-B,
five-pin cable
Operating Mode: T1<T2; T1>T2;
absolute; Defines how reverse energy
flows are handled (T1 should be installed
in the same pipe as the flow sensor)
Energy Total units: kBtu; Mbtu; kWh;
MWh; kJ; and field programmed custom
units
Control. Manage. Optimize.
Data Industrial is a registered trademark of Badger Meter, Inc. Other trademarks appearing in this document are the property of their respective entities. Due to continuous
research, product improvements and enhancements, Badger Meter reserves the right to change product or system specications without notice, except to the extent an
outstanding contractual obligation exists. © 2016 Badger Meter, Inc. All rights reserved.
www.badgermeter.com
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