Badger Meter 3050 Series Btu Monitor - Manual (Page 11)

Page 11 6-11
Installation & Operation Manual
Temperature Input
The Series 3050 Btu Monitor can accept inputs from either a pair of thermistors or RTDs. The inputs are labeled T1 and T2.
Since the T1 sensor is used to convert the volumetric flow (Example: GPM) to the mass flow ( Example: Lbs/Hr) used in the Btu
calculations, the sensor connected to T1 should be in the same supply or return line as the Flow Sensor.
The temperature inputs of the Series 3050 are extremely versatile. In addition to the factory default two-wire10k @77°F Type
II Thermistors and three-wire 100 ohm Platinum RTDs, the unit can be programmed in the field for a wide variety of custom
RTDs and thermistors. Refer to the Programming Flow Chart. Contact the factory for assistance with any custom inputs.
Wiring Two Wire Thermistors and RTD’s
Wiring Three Wire RTD’s
1 TEMP 1 IN +
2 TEMP 1 IN -
3 TEMP 1 GND
4 SHIELD
5 TEMP 2 GND
6 TEMP 2 IN -
7 TEMP 2 IN +
Jumpers
2 Wire
Thermistor
Located
in same
Supply
or
Return line
Flow Sensor
2 Wire
Thermistor
3 Wire
RTD
T1
Located
in same
Supply
or
Return line
as
Flow Sensor
3 Wire
RTD
Same Colored 2 Wires
Different Color Wire
Different Wire
1 TEMP 1 IN +
2 TEMP 1 IN -
3 TEMP 1 GND
4 SHIELD
5 TEMP 2 GND
6 TEMP 2 IN -
7 TEMP 2 IN +
Figure 7: Wiring Two-Wire Thermistors and RTDs
Wiring Two Wire Thermistors and RTD’s
Wiring Three Wire RTD’s
1 TEMP 1 IN +
2 TEMP 1 IN -
3 TEMP 1 GND
4 SHIELD
5 TEMP 2 GND
6 TEMP 2 IN -
7 TEMP 2 IN +
Jumpers
2 Wire
Thermistor
Located
in same
Supply
or
Return line
Flow Sensor
2 Wire
Thermistor
3 Wire
RTD
T1
Located
in same
Supply
or
Return line
as
Flow Sensor
3 Wire
RTD
Same Colored 2 Wires
Different Color Wire
Different Wire
1 TEMP 1 IN +
2 TEMP 1 IN -
3 TEMP 1 GND
4 SHIELD
5 TEMP 2 GND
6 TEMP 2 IN -
7 TEMP 2 IN +
Figure 8: Wiring Three-Wire RTDs